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Home My WebLink AboutORD 1982-075 ORDINANCE NO. 82-75 AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS ADOPTING CONSTRUCTION STANDARDS; REPEALING CON— FLICTING ORDINANCES; PROVIDING A ��'— ALTY; PROVIDING A SEVERABILITY CLAUSE; AND DECLARING AN EMERGENCY BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS : Section 1 . That the Construction Standards of the City of Grapevine , Texas, attached hereto and made a part hereof as Exhibit "A" , are hereby adopted. Section 2 . That Chapter 20 , Article III , Sections 20-40 through 20-49 r�lating to Construction by Developers and Chapter 25 , Article II , Sections 25-55 through 25-56 relating to Water & Sewer Construction are hereby repealed. Section 3. Any person, firm, or corporation violating any of the provisions of this ordinance shall be deemed guilty of a misdemeanor and, upon conviction in the Munici- pal Court, shall be fined in an amount not to exceed the sum of Two Hundred Dollars ($200 . 00 ) for each offense. Section 4. If any section, paragraph, subdivision, clause, phrase, or provisions of this ordinance shall be judged invalid or unconstitutional , the same shall not affect the validity of this ordinance as a whole or any - portion thereof other than that portion so decided to be invalid or unconstitutional . Section 5. The fact that a complete document or Con- struction Standards does not currently exist��creates an urgency and an emergency and the preservation of the public health, safety, and welfare requires that this ordinance shall take effect immediately from and after its passage and the publication of the caption of said ordinance as the law and the City Charter in such cases provides . PASSED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS on this the 16th day of November, 1982 . . APPROVED: Mayor ATTEST: - ��_� �/�y � � ��>S�-�Zc.c. City� Secret y APPROVED AS TO FORM AND LEGALITY: � � � City Attorney EXHIBIT "A" TO ORDINANCE NO. 82-75 - - - - ��: � �, / / . _� --.�_ : : :.: .: :�, �: ,., 3 . �-�.�.. ., .. �... .�. . . �� .... . `;`- a'et J-: ,^Q.*C r fy,.R'j;i; "^•.,j �-;.> .., a ��,"�,.a . . _ . ' . _ . , . . . . . -. _ . •. '. . . . . , ..< , . .-r' r4.. �.�``-� .. � �.�� . . . . . . . � . ..._... . . _ . _ . . __. . ..., ..N•. . QTY OF GRAPEVINE, TEXAS STANDARDS OF DESIC�I PASSED AND APPROVED BY THE CITY COUNCIL OF Tf� CITY OF GRAPE�TIl�, �XAS NOVII�ER, 1982 k�+,�f.�' s�: • - , , ' � .. � .- . _ . .. , �1;_�al �� :��r_1-�'S h. ..V.{ „�� .� ... �...:� ... .. . .... . ...t. .. .. . . TABLE OF CO1�Ti'II�l'I'S 1. GIIVII2�1L RE�UIRII�]'I'S 1.1 Introduction 1.2 Standards of Design 1.3 Standard Details 1.4 S�ecifications for Construction 1.5 Utilities to be Underground 2. STREEI' SYSTEM 2.1 General 2.2 Street Arrangement 2.3 Horizontal Curve Linutations 2.4 Block Lengths 2.5 Street Intexsections 2.6 Relation to Adjoining Streets - 2.7 Dead IIzd Streets, C�1-de-Sacs and Courts 2.8 Street Right-Of-Way Widths 2.9 Pavement 6Jidths 2.10 Alleys and Alley Widths 2.11 Street Grades 2.12 Pavement Design __ 2.13 C1�rb and �ztter 2.14 Parkways, Grades and Sidesaalks 2.15 Street Posts and Markers 2.16 Street Lightr�g 2.17 C�irb Ra�s for Hand.icapped 3. STOI�d DRAIlVA� SYS'7'II�'I 3.1 General 3.2 Stonn Drainage Design Criteria 4. WATER SYSTEM 4.1 General 4.2 Connections to Existing Distribution System 4.3 Locatior. of Facilities 4.4 Service Lines 4,5 rlaterials and Installation - 4.6 Testing � 5. SANITARY SEt+]ER 5.1 General 5.2 Connections to �isting Sewer Collection System 5.3 Location of Facilities 5.4 P-�terials and Installation 5.5 Testing .. �� . . �J ... . . ..' . - ... � _ �yµ. !- -y.nr+e d.l� .c; � �t,"+,,,�'�'.y�a °� >+�f�-:2.f .. . . : � . ..... .. .... ..... . .. .. „_ ....:...c:�,.: ::..w:::s..- � . r...:.� ...-:. - � ... . �v...r' '� �.�.,...._.....,n.< �.. . .� . . . '.r. .. . ... , . ._. .. .._:�-: .. _ _. . � . . .... TABLE OF CONTENTS, Continued 6. DESIQ�1 STANDARD DRAWIl�IGS 6.1 General 6.2 Availability of City Standards � .. . _ ..... _.... ._<_:--- ..y....ti _. .. , �:�,�:,.F,;,.;�. 1- GIIJERAL REQUIRFfi�V'rS 1.1 Introduction: This Manual - "Standards of Design" - is to i�lemerit the provisions of the S�.ibdivision Ordinance and to provide for the orderly, safe, healthy and uniform develog�nt of the area within the corporate City l�mits and within the area surroundin,q the City. The Specifications for Construction and the Standard Details supplem�nt and are made a part of these Standards of Design. These three docturnnts are to be considered as mi.niirnam requir�nents and it shall be the responsibility of the subdivider and his agents to determine if more stringent requirements are necessary. The adherence t:o the requirernents of these three doc�m�nts and/or the appraval by the City Manager and his agents of submittal data in no way relieves the subdivider of the responsibility for adequacy of design, canpleteness of plans and specifications or the suitability of the co�leted facilities. The subdivider shall notify the City Ehgineer, iri writing, of any deviations fr�n the requirements set forth in the Standards of Design, Specifications for Construction or Standard Detai.ls. Such deviations �st be approved in writing by the City E,hgineer prior to beginning of constxuction. 1.2 STF�IDARDS OF DESIQV: The Standards of Design, as adopted by the City of Grapevine, are set forth herein. These Staridards shall be considered as a miniirnun requiren�it and it shall be the responsibility of the subdivider to deterniine if more stsingent requirements are required for his particular develogn�nt. It is not intended that the Standarc� of Design caver all aspects of a subdivision. For those elements omitted, the subdivider will be expected to provide designs and facilities in accordance with good engineerinq practice and to cause to be constructed facilities utilizing first class worl�nanship and materials. It is expected that the Standards of Design will be amencled at intervals; therefore, developers and their engineers shall verify the Standards for latest revision. 1.3 STANDA�D DETAIIS: In an effort to have unifozmi.ty and to facilitate maintenance, the City has adopted standa�l design features for certain facilities such as manholes, street sections, curb inlets, ra�s for the handicapped, etc. These requirements are shawn as Standard Details, which are included in the doc��nts. The Standard Details are included in the Standards for reference and use by engineers and planners. Any variations from the Standards shall have �rritten approval by the City. 1.4 SPECIFICATIONS FOR CONSTRUCTION: Specifications for Construction as adopted by the City of Grapevine are bound as two separate doc�r�ents: (1) Specifications for Construction - Water Distribution and Sewer Line 1-1 ✓ .:- � : .,: _ -, . r. ,. r; , �:. . ., ..�. : .. � �_r:; .'�':'�L r Wt.l'1: �,.L. r.. �1 ,.�»! 5.;.�7 ....,4�'.^.X,.�. V":� w7'� `}( , ..� . .. _ .. � . .. . . . . . . . . . _, .. .,t�.. ._. . _ . . . .. � ...- ... ,}. . . . Construction, and (2j Specifications for Construction - Streets and Drainage. These specifications should be considered as mininnun requirements and such additional requir�zts as the subdivider may consider appropriate should be added as supplem�nts. 1.5 INSPECTION OF C`ONSTRUCTIUN BY CITY PE��SONNEZ; A11 const„ruction and verification of c��liance to the plans and specific�tions shall be conducted by the City Inspection staff under the direction of the City �hgineer. The facilities included in this inspection requirerrent are street construction, stonn drainage facilities, water distribution system, sewer collection sysa-�, etc. The subdivider shall advise all of the construction contractors of this requirement. No subdivision will be accepted by the City until and unless all wnstruction has been approved by the City Inspection staff. 1.6 UTILITIES 'Ii0 BE UNDE�UPID: All pipe line type utilitie� within the subdivision shall be placed underground. Underground utilities are defined as water lines, sewer lines, storm sewaer pipes, gas lines and telephone or pawer cables. �lephone lines, electric lines, averhead type cables, etc. shall be, generally, placed overhead. In case of special or unique circimstances, the City may grant variances or exceptions to this requirement. Any request for variance or exception should be submitted in writing to the City setting forth the-. justification for an exception. The grantinq of a variance or exception by the City will be in writing. 1.7 BUILDING PERI�IITS: The issuance of Builc3�ng Permits will be withheld by the City until the utilities, streets aarxi stozr,► drains are c�lete and accepted. by the City. All pro-rata water and sewer fees shall be paid prior to acceptanoe by the City. 1-2 ..: , . ' . . � ' y ' '-� ��y* :1 _ h ' .y{,-_ �:1.� " .-. . . . .. . .. ... . . . . . ... . ��.-...�':-. :-.:�1X�N^i ' . . . . �f�' .._.........:..�..e�..i....-. .....� ':'..��'�.. . � r�,.�i . . . - .. . .. ..... . ._:Y- . _. . . . . . . 2. STREE.P SYSTEM 2.1 GII�1ERaL: The street syst�n, including the str�et layout, shall be in accordance with generally accepted eng�neerinq practices and in co�liance with the City Plan, the Thoroughfare Plan, Zoning Ordinance, S�bdivision Ordinance and other applicable regulations. The drainage systesn, as incorporated in the street syst�n, shall ca�ly w:ith ItFsn 3 of this Manual. The plans and specifications, desigri ac�utations. State Planner coordi.nates shall be assigned to the centerlinP intersections of all streets, at the ends of cul-de-sacs and at all major cuzves in the streets. These coordinates shall be to "National Nk-�pping standards" accuracy and shall be stx�vn an the final cnnstruction drawings. The City will furnish coordiantes for the closest exi.sting street intersection upon request. Other applicable data shall be submitted to the City for revi�w. Construction shall not c�nce prior ta the approval by the City. 2•2 STRF�T ARRANGFL�3VT: Unless othezwise approved by the City, provisions shall be made for the extension of existing major thoroughfares, collector streets and those residential streets which may be necessary to provide circulation with adjacent areas. The street arrangements shall confozm with the intent of the Thoroughfare Plan as adopte-�d by the City. Adeuuate collector streets shall be provided for the circulation of traffic throughout the subdivision. Residential streets shall be pravided to acca►�rodate local residential use within the subdivision. Off-center street intersections will not be approved except under unusual circtunstances. C�.irvilinear streets are pern�issible. 2.3 HORIZONTAL CURVE LIMITATIONS: The miniirnun radii at the center line of the street shall be in accordance with the follawing tabulation: MINID2UNI RADII - FEET' Akzjor Thoroughfare 800 Collector Street 300 Residential Street 150 2.4 BI�OCIC L��GTHS: In general, streets shall be pravided at such intervals as to serve cross traffic adequately and to meet existing . streets or customary subdivision practices in the neighborhood. Phiere no �isting plats control, tY?e blocks shall be not m�re than 1,600 feet in length nor less than three hundred (300) feet in length except in unusual cases. 2.5 STRE�r INTERSECTION: Nbre than two streets intersecting at one point shall be avoided except where it is i�ractical to secure a proper street syster,i otherwise. VJhere several streets converge at one point, setback lines, special rounding or cut-off of corners and/or a traffic cixcle may be required to insure safety and facility of traffic mo��ement. Thoroughfares and collector streets shall intersect any other thoroughfares and collector streets at an angle of ninety (90) degrees. Minor streets shall intersect thoroughfare and collector streets at 2-1 r • : ,: � . - ..... ,_ ;:;, .. . ..- . , : . - .. -.;:. , '.:� �_ ;.» �, >: _ � :�. ;, . . _, ,�, :� .* �^:. . .. - .. . . , R _.__... ,:._.. .. ,<.:_.....,:..�:�_:...- »:..,.:._ ..x.�..:K.a:,.�4w�r _.... ... . ..... .a...r �-- � ninety (90) degrees. Thoraughfares and collector street intersections shall have property line corner radii with a mi.nisrnan tanqent distance of thirty (30) feet. Residential streets shall hav�e as ttle prvperty line corner, the point of intersectian of intersecting streets. Chrb radii at intersections shall be not less than twp`nty (20) feet measured frcen face of curb. Less than twenty (20) feet may be used only with written approval of the City. 2.6 RELATION � ADJOINIlJG 5�5: The system of streets designated for the subdivision, except in unusual cases, �st corulect with streets already dedicated in adjacent subdivisions; and where rio adjacent connections are platted, irnust in qeneral }�e the reasonable projection of streets in the nearest subdivided tracts, and must be �ntinu�3 to the boundaries of the tract subdivided, so that other s�ubdivisions may connect therewith. Resc�xve strips of land controlLing access to or - egress from other property or to or fran any street or alley or having the effect of restrict.;_ng or c7�imaging the adjoining propexty for subdivision purposes or which will not be taxable or accessible for special improvements shall not be permitted in any Subdivision unless such reserve strips are conveyed to the City on a fee si�le. 2.7 DEAD END STRg,'TS, CUL-de-SA�S AND Cp��: ��s or places may be pezmi.tted where the fornn or contour of the land or the shape of the property makes such street d�esign appropriate. Such cul-de-sacs, courts or places shall provide proper access to all lots and shall generally not exceed four hundred (400) feet in length and a turnaround shall be provided at the closed end which has a mini.m�un ri,ght-of-way radius of fifty (50) feet. Dead end streets will not be allawed except on a te�orary basis pendinq the develop�ient of adjacent property. Where dead end streets are utilized, a turn�-iround of the size and dimensions required for a cul-de-sac traxst be provided. If drai nage is rbot affected, curb and c�utter may }�e �n.itted for the turnaround, p� ten�orary easement must be provided for that portion of the turnaround that lies outside the limi.ts of the normal street right-of-way, The easement shall provide for termination upon the extension of the street and the construction of the appropriate curb and gutter sections. 2•g ST�,'I' RIGHT--0F WAY WIDTHS: A minirrnIIn right-of-�ay width for various classifications of streets shall be as set forth in the tabulation belaw: 2-2 r � . , . •/'�- .:1,r: �'r�.:�:�'T',' ....?'....:-. a�.�F,�'hx . 9.> . . . ..ti " . ..,...: ..,:� .. .: .:.� . . Z _ ..... �:.: TYPE OF STRF�I' N1a1IA2�i RIC�iT-0E-WAY: E�r Major Thoroughfare, Type A 120 blajor Thoroughfare, Z�pe B 100 Major Thoroughfare, Z�pe C 100 Major Thoroughfare, � D 75 Collector, �pe E �� Cc�llector, Z��e F 60 Collector, �pe G 60 Residential, Ty� H 50 Residential, Z� I 50 C�1-de-sacs 50* 2•9 PAVII�T V�: Nlinimiun widths of pavement for the various classi- fications of streets shall be as set forth on the drawings on the follawing pages: *Residential Street, Z�pe I, shall be used only in connection with cul-de-sacs. 2-3 � " - - _ ,.- : . . . _ :. /,, , : ,_a ..�, .� ;. ,. ._ . .. . . �.�., .�-,1 ..�... -.-..:: .�... ':'�": .'.::... , .:`• i. '�..: '"��t'�t.L' r c�t " 'r4 � F;�s��', ... .. . .. -. . .. . . . . . ., . j .�.��:: �.:tf.t f '?.�'- ..•�.e... .t r.9`:Y. . .. - . � .. . ._ ._.._.. . . . . . _ . _ ... ... ..r'. ,.. .. . . . CULLECTOR STREETS Four traffic lanes of 11 ' each Sidewalk oQ •'�w� r�U11�nM M�A d�Mwr4 w� 21 15' �48' 15' 75' R.O.W. COLLECTOR,TYPE � STREET (Apartment, commercial anci industrial areas} � Sidewalk o Two parking lanes - of 8' each, two ''"�" traffic lanes of 11 ' each (12' preferable for � clearance of p e, Z� cars) 14 1/2' 41 ' 14 1/2' 60'- 70' R.O.W. de endin on utility locations � COLLECTOR, TYPE F STREET (Single family and duplex residential ) 2-4 � _ fi _.. _ . _ _. . . :. . _ . . , _:. . � . , . , , . : .. <::._ ..._.. ,: : - . . , ..� . . . �. r.,; ..�..:. :__.,, .::l. _.f_..; .;,'.` i.... - . . . . . . . .. . . � • . , ��y . MINOR ARTERIALS Two traffic lanes, 11 ' wide � ~�,� s� Barrier median with left � � Sidewalk turn ]anes or continuous 1�� two-way left turn lane r� r� rr G o � � L�� '1 1 L '+ 24' 12' minimum 24' 14't 14' desirabie 95' R.O.W, desirable 90' R.O.W. minimum MINOR ARTERIAL, TYPE C STREET . Sidewalk Four traffic Ianes �'�`�—.,r.,.�. ° ° � e ��.,. •wse.r4��r 2� 13'+ 48' 13'+ 75' R.O.W. . MINOR ARTERIAL, TYPE 0 STREET 2-4-1 � -�r _.au -:a.,e�-i•s . < _ . � `� �.. . ' - �_r e ti. ..� �:.;c.: �h:��I._ . . . . . _ .. . .. . . : ., . . -- ' � _ .. -. . ..- . � . .... „-..-. . .. ... . . � _ . _ . ... . ._..�r . _. . . . � MAJOR ARTERIALS Three traffic lanes, 11 '-12' wide, no partcing plus curb and gutter Utiliti A11ows for two sidewal � left turn lanes and buf 0 �. °�° � u��r o a a e �� . M�N�� pw�wM�.�wu��. N��M�� 16' 2' � 28'-30' a t major intersectio�,s 2� 15'+ -39' � -39' 1� , � 120' R.O.W�. . ]40' R,O.W, at major intersections - MAJOR ARTERIAL, TYPE A STREET � Utilities, sidewalk and buffer* Two traffic lanes, 11 ' wide plus curb and gutter w. ..... '5��+...... o - � 0 O wnvtNn«y�wr.r..0 � �.n....r� MH��I�Q � 2� 2' 14'+ 26' 16'-24' 26' 14'+ 100' R.O.W. MAJOR ARTERIAL, TYPE •B STREET *The width shown is the minimum. A wider buffer area that moves the sidewalk further away from the arterial is preferred. � . _... ._. _ ..._ _. __. ;:a.�.,y-,,.�. _.- -�._-_.� �. . . LOCAL STREETS Sidewalk �� JM 2� - 50' R,O.W. , minimum 60` R.O.td. , desirable for -- sidewaiks and utilities* � LOCAL, TYPE G STREET - *With a 60' R.O.W. the front setback can be reduced by 5' , leaving the same distance from the back of curb to the residence. 2-4-3 ..r. _ . .:R„ �:-�. . �'� � '�� -, .:,,-u ••,�:- , . . . _. . _ . : - 2.10 ALLEYS AND AT,TF'Y tirR�g; A7.leys shall not be allawed in residential areas except by written approval by the City prior to planning. Alleys may be provided in c�rercial and industrial districts where other definite means cannot be provided for service access such as off-street loading, unloading, and parkang oonsistent with and adequate for the uses intended. Minitrnun right-of-iaay widths of alleys shall be twenty (20) feet. Dead-end alleys sha11 not be pernu,tted, except �t the City may waive this requirement where such dead-end a7,leys are unavoidable and where adequate turnaround facilities have been provided. Adeq�aate provisions shall be mad,e at all intersections in order that equipment can maneuver the oorners, The interior edge of pavement, at the oorners, shall have a mini.m�un radius of 30 feet. Th� right-of-way limits shall be expaizded, if necessary, beyond the mi.ninnun requiren�ent in order to include all of the paved section within the right-oz-i,vay of the alley. Alley-turnouts shall be paved t,o the property line and shall be twenty (20) feet wide at that point. All alleys shall have a mininnun of 20 foot concrete paved roadway. The miniirnan width alley shall only be used if 90° parking is not ;-�lized on the alley for access. If 90° parking is utilized, the miniim.�a width of paved surface behind the par}ciriq shall be 25 feet. Concrete shall have a minim.un strength of 3,000 psi within 28 days and a minitrnan cement content of 5 stacks per cubic yard. 2.11 STREET GRADES; Thoroughfare streets may hav+e a �innun qrade of. five (5) percent, unless the natural tapography is such as to. require steeper grades, in which case a seven and one-half (7�) percent grade may be used for a maxim�un continuous distance of two hundred (200) feet. Collector streets may have a n�xim�n grade of seven and one-half (7�) percent. Residential streets may have a maxinn�n grade of ten (10) percent, unless othexwise approved by the City where the natural topography is such as to requixe steeper grades. All streets �st have a miniirn�l grade of at least five-tenths (5/10) of one (1) percent. Center line grade changes wi.th an al.qebraic difference of more than tw�o (2) percent shall be connected with vertical curves in oomplianee with the requirements set forth below. Vertical curves shall have mininnnn lenqths as set forth in Table l. The design speed shall be in accordance with the tabulation belaw: Nlajor Thoroughfares, Z�pe A and � B 60 Miles Per Hour P�iajor Thoroughfares, ��pe C and ��pe D 50 Miles Per Hour Collector Streets 40 bliles Per Hour Residential Streets 30 NLiles Per Hour 2.12 PAVa•1ENT DESIC�I; Pave�nent design shall be in accordance with good en9ineering practice. Paver.�nts shall be constructed using either concrete or asphalt. Deviations from design standards included herein shall have written approval of the City �hgi,neer. The pavement shall meet requirements of the particular type specified hereinafter. 2-5 � - . � � � .� �� .." t�'� � . � . . _ � . . ei � / . .. .. �_ . . . , _ . . ..- ��:ty, .y�:�-`r;. *�. } .�:: `s..tr: r�:w�r fi.6-7 +� ;r ... .. .. >. . ..�.. . .,. __ .._,. ..-... ,.- ... .- ... �. '^. .. . . . �.. ,- . . . ...:.a .. . . _ .. '. . . . .. . . � .-..., �a>..P .:�.?..=� ;}'�. . '?'�,'+ '�.. .-.. '.... . . . . . . .._... � . ._.... . . ..- . . . . . .. � ... ..�.. ... � _ � . . 2.12.1 CONCREi'E pAVII�IT: Concrete for pavem�nt shall be not less than 3,000 psi co�ressive strength at 28 days with cement content nat less than five (5) sacks per cubic yard. The subgrades shall have lime stabilization to a miniirnmi depth of 6-inches. The lime stabilization shall be used for the full width of the street, back of curb to back of curb plus 6-inches on each side. Pavement shall be reinforced with No.3 bars at 24-inch centers to centers in both dixections. Mini.nnun concrete thiclmess of pavem.ent shall be 6-inches for industrial streets and streets subject to heavy truck traffic. Residential area streets of 'I�pes "E" through "I" may have concrete thickness of not less than 5". 2.12.3 ASPHALT PAVF1��l'r: Asphaltic e�ncrete pavement shall be installed on stabilized subgrade as specified in Standard Specification for Streets and Drainage for City of Grapevine unless otherwise approved by the City Fhgineer in writing. Asphaltic concrete shall be installed on subgrade stabilized with ei.ther hydrated lime or Fortland cement. M:inimLun thicknesses of stabilized bases shall vary fran five (5") inches to seven (7") inches, depending on type of street: designation. Details for asphalt pavement are included in Standard Specification for Streets and Drainage. 2.13 CURB AND GU'I'I'ER: C�zrb and gutter shall be required for all streets and avenues. Radial curb and gutter shall be constructed at each corner upon each block to which curb and gutter is constructed. Lay-dawn corner shall be constructed across all alley intersections. All curb and gutter and all lay-dcwn curbs shall be v�nstructed in accordance with the Standard Details and the Specifications for Construction. G�.irb and gutter shall be constnicted of concrete having a mini.naun strength of 3,000 psi in 28 days with a mini.m�.un of 5 stacks of cement per cubic yard. 10 foot dtmuny joints w/expansion joint every 40' , no washer aggregate driveway approa.ches or curb and gutter. 2.14 PARK4�IYS, GRADES AND SIDEti�LKS: All parkways shall be constructed to contorn to top of curb grades with a standard transverse slope of or.e-quarter (4) inch per foot rise from top of curb to back-of-walk line. Where the natural topography is such as to require steeper grades, transverse slopes up to one (1) inch per foot may_be used with approval of the City. The back-of-walk line shall be one (1) foot from the property line for all parkways up to and including fourteen (14) feet in width, and three (3) feet from the property line for parkways fifteen (15) feet and over in width. Parallel residential sidewalks as may be required and where provided, shall be reinforced concrete not less than four (4) feet in width, parallel to the alignir�nt of the curb and located wholly within the dedicated street one (1) foot fram the property line in park��ays up to fcurteen (14') feet in width and three (3) feet fresn the property line in parkways fifteen 915) feet and over in width. Sidewalks abutting business property shall have a minitmun width of six (6) feet. Concrete 2-6 � �> sidewalks and driveways shall be as specified in Stanc3ard Specification for Streets and Drainage. 2.15 STREEr POSTS AND N�iRI�R.S: Zhe c3�eveloper shall purchase street posts and markers for each street intersection previous to installation by the City. Generally tw+� street posts and markers per intersecitfln �,aill be required. Posts shall be sized and placed to confoan to the "Texas P�lanual of Uniform Traffic cantrol Devices." Install,ation to be City responsibility. 2.61 STREET LIC��TIl�,� All subdivisions shall be provided with street lights. In general, lights should be located at street intersections and at ir.tervais no greater th�-in 400 feet apart. Street lights, shall. be the equivalent of 175 watt mercury vapor fix-tures. 2•1� CURB RA�'IPS FOR HA�IDICAPPID: C1zrb ra�s for the handicapped shall be provided �,n all c�xcial areas, industrial areas and in residential areas which have sidewalks. �s shall be located to provide adequate and reasonable access for the safe and convenient movelrent of physically handicapped persons, including those in wheelchairs, across curbs at all pedestrian crosswaiks. Ramps shall conform to the Standard details or an alternate design subject to the approval of the City. 2-7 . , . , . � _ ,, ,,, -- �.. - . ;�, .. ... • _ , ,. . , .. . -, _.;. , . . , . •- . . , ._. _, ., . _ ,_ .,, _, _ , . :, , _. �,..,�r,.__ ., _..,..� . 3. STORM DRA.adAGE SYSTEM 3.1 GIIVERAL: Storm drainage facilities shall include all elements of a drainage system consisting of streets, alleys, stozm dr«ins, channels, culverts, bridges, swales, and any other facility throuqh which or over which storm water flaws; all of which the City �st have a right in, either in the fonn of a dedicated right-of-way or flooc3way and drainage easements. Street drainage facilities within new developments shall be designed so that storm water nmoff results fram a design storm of 100 year, or greater, frequency is oontai.ned within the available right-of-way and/or drainage easements. The capacity of the street and right-of-way and/or easements and the stonn drain pipe act:ng in combination rnust be designed for a capacity to safely contain stonn water fram a design stonn of 100 year frequency, without flood damage to nearby occupied structures. Drainage facilities shall be designed and constructed at such locations and of such size and d�mensions to adequately seive the sl�bciivision and the contributing drainage area above the subdivision. The subdivider shall provide all the necessary easements and right-of-way required for drainage structures including storm drains and open or lined channels. Easement widths for storm drain pipe shall not be less than ten (10') feet and easemP.nt widths for open or lines channels shall be-at least fifteen (15') feet wider thati the tap of the channel. The design flaws for the drainage system shall be calculated by the Rational t�lethod in accordance with standard engineering practice and in accordance with the requirements set forth herein. Curbs, inlets, tn�3nholes, etc. , shall be in accordance with the Standard Details. r�terials and construction procedures shall conform with the requirements of the Standards For Construction. The subdivider shall provide plans and specifications for all drainage structures. Underground drainage pipes shall be used tA accamnodate flaws up to and including the equivalent capacity of a forty-eiqht (48��) inch pipe. For flaws in excess of the capacity of a forty-eight (48") inch pipe, lined channels may be used in lieu of pipe. Chanr.el bottom shall be concrete and walls as approved by the City. For flaws in excess of the capacity of an eighty-four (84") inch pipe, unlined channels m,ay be used. Unlined channels will not be accepted by the City for r�aintenance pusposes unless a fifteen foot (15') roadway on either _ side of the channel is included. Mi.niirn�n side slope shall be 3:1. The design, size, type and location of all stonn drainage facilities shall be subject to the approval of the City. The requirements set forth herein are considered a miniurnun requir�nent. The subdivider and his engineer shall bear the total resF:onsibility of the adeq�;acy of design. The approval of the facilities by the City in no way relieves tl,�e subdivider of this responsibility. 3-1 � . ' _...:w-:-��...:--..�...r.nK... ...,,oeewe.n'a.�F . 3.2 S'I'ORM DRAIl�IAGE DESIQV CRITERIA: 3.2.1 GII�L: For all flood control systems of less than 1,000 acres, the Ratidnal D"ethod of c�uting runoff will be used. The method is e�.�pressed by the follawing ecruation: Q = CIA, whete Q = the stonn flaw rate at a given point C = a coefficient of r�off (the ratio of rainfall to peak runoff) I = the average intensity of rainfall in inc�s per hour for a period equal to the time of flaw fram the fart-hest point of the drainage area to a point under consideration A = the area in acres that is tri.butary to the point c� design. RUNOFF COEFFICIET]T "C" TYPE OF ARF,A OR I,AI�ID USE ADO�'I� RUNpFF ppEEFICmVT "C" Parks or Open Areas 0.30 Residential (Lots aver 1,p A�rxe) 0.35 Residential (Lots 1.0 A�re or less) 0.50 Industrial 0.70 Apartments 0.75 � Business 0.80 Nl�rcantile District 0.90 3.2.2 TIME OF CONC�RATION: The time of concentration is defined as the longest tirie, without unreasonable delay, that will be required for a drop of water to flvw fresn ttle upper lj,mit of a drainage area tp the paint of concentration. The tirne of concentration to any point in a storr� drainage syste�n is a canUination of the "inlet time" and the time of flow in the drain. The inlet time is the tim� for water to flaw over the surface of the ground to the storm drain inlet. The shortest inlet time to be allowed for it�ervious areas on steep slopes shall be 5 minutes. Under average conditions the time of concentration to the upstream end of a drainage system shall coincide 4�ith the tabZe "Minimtan Inlet Time � of Concentration". Un�er unusual circimL�tances which will produce t�mes of concentration in excess of those shown in the follcwing table, the time concentration shall be deterntined through the use of Figure I, "Nomograph for Time of Concentration". The norrograph, hcf�u�ver, should be used in a judicious 3-2 ..K �� a .. 'ft�*.C;+�h•��...... >; , � ..r.._ S . `;�.:t"''#:'` ,v�• . . . , . .- . _ . r . _. ', _ . ,. ..e- . � . . manner; otherwise Lmrealistic times of concentration may result. Soi;�e cautions to be exercised in the use of this nca��ograph are as follc�ws: a. The path along which the time of �oncentration is determ.ined, should be representative of the drainage area as a whole. On some irregularly shaped drainage areas it is possible to find the time of wncentration along a particular path which is representative of only a small portion of the drainage area. This time of concentration may greatly exceed the time concentration which is more representative of the drainage area as a whole. b. Overland flaw shall be wnsidered channelized at such time as the distance traveled exceeds 200 feet. MIlVIM[JM INLE'.P TIME OF CONCENTRATION TYPE OF AF�EA MIl`TIi�lUM INLEr TIME Parks and OpF.n Areas 20 Minutes Residential-Single Family 15 Minutes Residential Multi-family 10 riinutes Industrial 10 Minutes Business 10 t�tinutes Mercantile District 5 Minutes -.. Since urbanization is anticipated on all drainage areas, all improvP.ments shall be designed for the case of full watex shed development. It is generally not practical to design improvements to gravity drainage syster�s in stages to match developme�it, except in the case of unlined ditches, and then, it is essential that ultimate rights-of�aay be obtained at the outset. ��lhen the water shed in question is basically undeveloped, the engineer shall attempt to anticipate future fully developed conditions and storni sewer locations and take the resulting velocities into consideration when deternuning the time of concentration. - 3.2.3 DESIGf1 STORM FREQUEIVCIES: 'I'he design storm frequencies shall be in accor�nce with the tabulation belaw: DESIQ�I STORM FRE�U.F�ICIES AREA OR FACILITY FRDQ(JFNCy �hclosed pipe system 5 Years Channels and creek in�rovesnents (1) 25 Years Culverts and small bridges 50 Years Large bridges (2) 100 Years Floodr,vays between building lines 100 Years (1) Channels and creek i�rovements shall have one (1) foot freeboard. (2) Large bridges have total span greater than 50 feet. 3-3 _ , � ,�, . . . . �. �.-- % - _ . - . -. - . � -�-� � �•:`+ �•��..�r�.x :�v.;.� ' • - . -. .. . . . .. �e.. . .. ,.._,.t� , ..�., r aa�. �r . . . � . . ..._.. . ,. _. . �. _� . _ .. -..... .+►. . The relationship between rainfall intensity-duration-frequency is set forth in Figure II. These curves have been developed usinq Technical Paper No. 40 "Rainfall Frequency Atlas of the United States" by the U.S. Weather Bureau. These curves shall be used in the design of all storm drain facilities. 3.2.4 PIIlNLTSSIBLE SPRF.AD OF tniATER: 3.2.4.1 GIIv'ERAL: Spread of water refers to the a�rount of water that may be allaaed to collect in streets during a sto�n of 5 year design frequency, In order that excess stonn water will ru�t �llect in streets or thoraughfares during a storsn of tt�e design frequency, the follawing spread of water values shall be used for the variaus types of streets. 3.2.4.2 N.'�TOR THOROU(�IFARES (DIVmID) : 3.2.4.2.1 PEPMISSIBLE SPRF.AD OF WATER: The permissible spre��: of water in gutters of ma�or d�vided thoroughfares shall be l�mited tc ��at one traffic lane on each side remains clear. �tter flaw shall �� based on a stom of 10-year design frequency. 3.2.4.2.2 CONDITIONS: Inlets shall preferably be located at street intersections, at law points or grade or where the gutter flavs exceeds the permissible spread of water criteria. Inlets shall be located, when possible, on off side streets or alleys when grades pennit. �.The standard gutter depressian of 5 inches shall be used so long as the depression does not fall within a traffic lane. In n� cases shall the gutter depression at inlets exceed the standard. In super-elevated sections, inlets placed against the center medians shall have no gutter depression and shall intercept gutter flcw at the point of vertical curvatures to prevent flcw fran crossing the thoroughfare. Unless expressly approved by the City, storm waters will not be allawed to cross major thoroughfares on the surface in valley gutters or otherwise. 3.2.4.3 M�70R THOROUC��'ARES (NOT DIVIDID) : 3.2.4.3.1 PEPs�ISSIBLE SP�E',AD OF WATER: The permissible spread of water in gutters of ma�or undivided thoroughfares shall be limited so that two traffic lanes will r�nain clear during the design storm. 3.2.4.3.2 CON�ITION: Inlets shall preferable be located at street intersections, lcw points of grades, or where the gutter flaa exceeds the permissible spread of water criteria. Inlets shall be located, when possible, on the off side streets or alleys when grades permi.t. The standard gutter depression of 5 inches shall be used so long as the depression does not fall within a traffic lane. In no case shall the gutter depression at inlets exceed the standard. Depressed inlets will be perr,titted in a standard parking lane. Where inlets are required in traffic lanes, inlets with no depression or recessed inlets shall be used. In super-elevated sections, intercept gutter flav at the law point of P.V.C, or P.V.T, to prevent flow frcm crossing thoreughfare. 3-4 �� 3.2.4.4 COIZDC'I'OR STREErS: 3.2.4.4.1 PERMISSIBLE SPRF�D OF WATER; The permissible spread of water in gutters of collector streets shall be liriited so that one stand�sd lane of traffic 4�i11 remai.n clear during the design storm. 3.2.4.4.2 CONDITION: Inlets shall preferably be located at street intersections, low points of grade or where the gutter flaw exceeds the permissible spread of water criteria. Inlets shall be located, when at all possible, on off side streets or alleys where grade permits. Inlets with the standard gutter depression of 5 inches shall be used. In no case shall the gutter depression at inlets exceed the standard. 3.2.4.5 MINOR STR�TS (RFSIDIIVTI�`,I,) ; 3,2.4.5.1 PERMISSIBLE SPRF.AD OF W�;7.�R: The pennissible spread of wat.�r in gutters for muior streets shall be limited by the height of the curb for standard street sections. The permissible spread of water in gutters for minor streets �vith split sections shall be limited by the hPight of the curb for low gutter flow and the depth of flvw at the face of the curb corresponding to the crawn elevation for high gutter flow. 3.2.4.5.2 CONDITIONS: Inlets shall be located at street intersections, law points of grade or where the gutter flaa exceeds the pernlissible spread of water criteria. Inlets with standard gutter depression of 5 inches shall be used in all cases unless special grading problems are involved. In no case shall the gutter depression at inlets exceed the standard. 3.2.4.6 AI.I.EYS: 3.2.4.6.1 PEP,MISSIBLE SPREAD OF WATER: The penniss�hle spread of water ir� alleys shall be limited to confiriing the flow to within the paved area with inverted crawns and be ooncrete. 3.2.5 FL,C7W IN S�RM DRAINS AI�ID THEIR APPU�;ANCF� - VELCCITIES AND GF'ADE: 3.2.5.1 NffNIrNi�4 GRADES: Stonn drains should operate wi.th^velocities of flaw sufficient to prevent excessive deposits of solid materials; otherwise objectionable clogging may result. The controlling velocity is near the Lrottcgn of the conduit and considerably less than the mean velocity of the sewer. Storm drains shall be designed to have a miniirnun _ mean velocity flawing full of 2.5 f.p.s. The follawing table indicates the minim�un grades for both concrete pipe (n = 0.013) and for corzugated metal pipe (n = 0.024) , flawing at 2.5 f.p.s. 3-5 s -`- .. . .. . . .. � '. . . . , ,.. . , h. .a .`r '0'.w✓Y� " y,.'-.i ,_.;.'�'_;' __,o!' ! - ...A�' _ ... .. . .. . . . .... .. .... ....... . ..�.� . ...a...:.ar_:_.'..�:.. .:.n 's.::.1i�r a ' .. - ' ...' .. .' .:_.�n.nr�.?: ' :.....'::��' . MIlVIMUt�I GRADES FOR S'InRM DRAIIVS Pipe Size Concrete Pipe (Inches) Slope Ft./Ft. 15 O�p23 18 p�p�g 21 O.00IS 24 0.0013 27 0.0011 30 0.0009 33 0.0008 36 0.0007 39 0.0006 42 0.0006. 45 0.0005 48 0.0005 54 0.0004 60 0.0004 66 0.0004 72 0.0003 78 0.0�, 63 84 0.0"003 g6 0.0002 3.2.5.2 DISC��ARGE OF STORM DRAIlV PIpE: Storm drain pipes discharging into lakes shall be set at an elevation such that the top of the pipe shall be belaw the nornial pool level of the Lake. Where stoan drain pipes discharge in water courses the invert of the pipe shall be at the sar.ie grade as the water course. Adequate riprap or other erosion protection shall be pravided. All stonn drain pipes in street and �alleys shall be installed at a depth sufficie�lt to permit all water lines to pass wer th�n when the water line has a miniirnun cover of three (3') feet. ' 3.2,5.3 MANHOLES: Storm drain manholes shall be located at intervals not to exceed four hundred (400') feet for twenty-four (24") inch in diameter or smaller. In general, manholes should be located at street intersections, storm pipe junctions or changes of grade and changes of alignirent. Storm drain manholes for pipes greater than twenty-four (24��) inches in diameter shall be located at points where design indicates entrances into the pipe is desirable. In no case shall the clistance between manholes be greater than eight hundred (800') feet. 3.2.5.4 LATEI2AI, LINES: The minim�un size storm drain line fram inlet box to the collector lines shall be eighteen (18") inches. 3-6 -�:. ��;:�. a _._.[ 'fir.0 i.�. ... ..� � • � �.�� . ,:.... > �,;..... _.t ,r�. ..,'' ti .'!`?:,,f.o''�..: t+ :✓.•� ^� .'.:.�. 'y � .J! _ 3.2.6 DRAIITIAGE DITC�'�S OR CHAl�LS: All channels shall have a mini.m�un bottc8n width of four (4') and a depth based on maxim�sn flaw. Side slopes of channels shall not be steeper than one (1') foot rise to (2') feet horizontal distance unlined channels shall have a 3:1 side slope with provision for a 15' roadw-a.y on either side of the channel. All channels shall be �esigned for a minimtan of one (1') foot freeboard at maxi.m�mi design flaw. Channels discharging into water courses shall have the same invert level as the water course. 3•27 GE[�tERAL: In cases when a 100 year stonn design utilizes the carrying capacity o� private property between building lines, the r.unimi.un slab elevations shall be established to prevent flood c',amage. 3-7 � - - � � -. . " . . � - ...�.-- :. . .,a. // ` . . . . . ' . . . � .. . . -. �. " . . . . �.?^n+: .�:nb ::t. � .f: 1 f -'Q�;.s'':r � �., .. . . . . � . - . , . . ._. -7:... „l� . . . � ... _. � . .. _.. . . . . . � . . . . _ . _. ,.+M- � .._ .. 4. WATER SYSTEM 4.1 GIIVEE�L: The design and construction of the water distsi.bution system to serve the subdivision shall be in accordance with good engineering principles, these Standards of Design and the rec�uirements of the Texas State Departrient of Health. No constnzction sha.11 c�zce prior to t�:e approval of the plans and specifications by the City and the Texas State Department of Hea.lth. All faciities shall be of sufficient size to provide adequate capacity for the subdivision. The pipelines shall be sized to meet the maxinn� instant domestic requirei�nts plus an appropriate allowance for fire protection water. The design criteria shall be submitted to �he City with the plans and specifications. The City reserves the ric�'_-;� to r�+,;re "oversizing" in order to provide capacities for area� �stside of the subdivision. Should the City request oversizing, the ada_tional cost will be borne by the City based on the follawing fornnila: City's share of cost = cost of facility as constructed less estimated cost of the facility rec�uried to serve only the subdivision. The minurn�n pipeline size to sezve law density residential areas shall be 6-inches in diameter and the minurnan pipeline size sezving apartr;ents c�rnrcial, business, industrial, etc. , shall be 8-inches. In ger,eral, all lines shall be looped with no dead-ends. Dead-end lines will be allawed only upon �proval by the City and shall be furnished with a flush valve arrangeir�ent. Industrial areas which m,ay require fire sprinkler systems must be sezved i�y a minurnm� 12" water line. Variance to this rule will be based on 1500 gallons per minute availablity during peak deir�and periods with a minim�an residual pressure of 30 p.s.i. 4.2 CONNF�TI��1S 'PO EXISTIZdG DISTRIBUI'ION SYSTII�I: Prel�mi.nary discus- sions concernir.g take-off points in the distribution system should be conducted with the City Ehgineer or his designated representative prior to fir.alizir.g the preliminary desigr.s of the distribution system to sezve the subdivision. Connections will be allawed only at locations where the City believes that sufficient quantity and pressures axe available to rr�eet the projected requirements of the subdivision. In general, th connections to the existing distribution system shail be made in such a manner to prever.t "shut-dcx�m" to a minurnun. Unless approved by the City, a tapping valve conneciton shall be installed. In general, the City will not approve a subdivison which cannot be sezved by extension to the City distribution systesn. Under unusual cinmlcstances, the City may consider approval of a private water system which will supply an adequate quantity of potable water to every lot in the subdivision. Such system must meet the approval of the City, the Texas State Depart��nt of Health and other apprcpriate regulatory agencies. In addition, an appropriate agreesr�ent betwe-en the City and the subdivider rnust be executed whereby the City may acquire the system at such ti� as it can be connected into the City, cs�med and operated distribution network. 4-1 . �- �. . . - �� ..;:., ..';,A,ry,�. � ...,,:-�.^fk,-:.�SI' . �...-i'. .'....: �.....,� . .,. . . - .. � . ' 4.3 IfJC'ATICN OF FACILITIES: 4.3.1 PIPELINFS: Water lines shall be located in the parlavays between the back of the curb and the street right-of-way. The location shall be generally 3 � feet fran the back of curb on the north side of east-�st streets and on the east side of north-south street. 4.3.2 GATE VALVES: In y+eneral, gate valves shall be located autside the paved streets and shall be five (5') feet back of curb return to the intersecting street. In general, gate valves shall be located at street interesections (except for fire hyudrant leads) . Unless otherwise approved, or requrested by Owner, valves shall be located in the north-east quadrant of the street intersection. All valve boxes shall be encased in concrete pad at the ground surface. Pad shall be 24" x 24" x 4." E�tensions to existing mains shall start with a gate valve to protect the existing system and extensions to the property line for future extension shall have gate valve near end. 4.3.3 FIRE HYDRANTS: In general, fire hydrants shall be located at street intersections or near the cneter of fihe block. Hydrants shr�uld be spaced in such a m-�ruzer so that all potential building sites are within: (1) a radius of 400 feet, and (2) within 50Q feet of hose length withaut crossing private property between the building line and the back property line. Details are included in the Standard Specifications. 4.4.4 FLUSH VALVES: Flush valves shall be installed on all dead-,end lines and shall c�mply with the Standard Details adopted by the City. 4.4 SERVICE LINES: A water service line shall be laid to each lot with fittings in accordance with the Specifications for Constxuction and the Standard Details. All service lines shall be 'I� K copper having a minimtun size of three quarters inches (3/4") . Each service line may, at the subdivider's option, serve two �djacent lots providing it is located at the cc�ion property line and ccmplies with the Standard Details. t�l�ter boxes to be furnished by the City shall be set level to finished lot grades and an angle meter stcp shall be set by Contractor about 12-inches belaw the meter box top. After the curb and gutter has been ir�stalled, the water service line location shall be marked by in- scri.bing a"W"in the top of the curb apposite the service line location. 4.S MATF'.RTAT C AND INSTAIS.ATI01�I: 4.5.1 PIPE: Water pipelines shall be either ductile iron, cast iron if approved, asbestos-cement or plastic confornung to the Specifications for Construction. Concrete C�linder pressure pipe may be furnished ar_d installect for sizes 16" and larger with approval of the City. All pipe shall be installed in �bedment material as shown on the Standard Details and in conforn�ance with the Specifications for Construction. 4.5.2 GATE VLAVES: All gate valves shall be AZ� 'I�pe as manufactured by Mueller, or approved equal, furnished and installed according to the Specifications for Construction. 4-2 . . _. ; ,..,. , - _. . .. . . - . . . . .- - ;�-°* � .�.. .�r:r�' r:_ . . ' _ ..,�_:_,� -..u..:�,.:.:�,.�,� � _. 4.5.3 FIRE HYDRANI'S: Fire hydrants shall be b�ieller A-423, or approved equal, conforming to the requirements set forth in the Specifications for Construction. All fire hydrants shall be installed with a 6-inch M7X flange gate valve on the hydrant lead. The installation shall be as set forth in the Specifications for Construction, 4.5.4 SERVICE LINFS; Seryice lines shall be in acoordance with the designs shown on the Standard Details. The materials shall be rlueller and shall be installed in accordance with ti7e �cifications for Construction. 4.6 TESTING: 4.6.1 HYDROSTATIC TEST: A11 pipelines shall be hydrostatically tested in accordance with the procedures set forth in the S�ecifications for Construction. The test shall not be conducted until the total installation is canplete including installing servic:e lines, -`=re hydrants, flush valves, etc. All testing shall be accom�lis'_-��-3 in the presence of a City representative. 4.6.2 STERII,IZATION: All facilities shall be sterilized in accordance e�ith the procedures set forth in the Specifications for Construction. The subdivi�er will be rern,;r� � ��t �les to an approved laboratory for certification as bei.ng free of bacteria. The facilities shall be sterilized and resterilized as may be necessary unti-1 such certification can be achieved. The sterilization shall be perfo� by the Contractor in the presence of a City representative. The City representative shall obtain test sa�les and have sterilization tests perfornied by a testing laboratory. 4-3 .-r _ . ... . . _._,.,,..._. _ �.. _.�..a.. 5. SANITARY SE,WII2 5.1 GIIVERI�L: fihe design and construction of the sanitary sewer collection syst�n to serve the subdivision shall be in accordance with good engineering principals, these Standards of Design and the requiremexits of the Texas State Departrnent of Health. 1`b construction shall co�_nce prior to the approval of tY�.e plans and specifications by tk7e City Ehgineer and the Texas State Depart�nt of Health. All facilities shall be of sufficient size to provide adequate capacity for the subdivision. The sewer lines shall be sized to meet the m�im�ml peak dry weather flc�w plus an appropriate allawance for infiltration of stonn water. The design criteria shall be suYxnitted t� the City with the plans and specifications. The City reserves the right to require "oversizing" in order to provide capacities for areas outside of the subdivision. Shauld the City request oversizing, the additional vost will be borne by the City based on the follawing forntula: City's share of cost = cost of facility as constructed less the estimated cost of the facility required to serve only the subdivision. The minim�n sewer line size to sezve residential areas shall be 6-inches in diameter and the mini.i;nmi sewer line size serving c�rcial, business, apart�nts, industrial, etc. , shall be 8-inches. -_ 5.2 CONI�TECTIONS TO EXISTIr1G SEWII2 COLLECTION SYSTII�I: Prel�misiary discussion concerning entrance points in the collection system should be conducted with the City F�igineer or his designated representative prior to finalizing the prelimulary designs of the collection syst�n to serve the subdivision. Connections will be allowed only at locations 4�here the City believes that sufficient capacities are available to meet the projected requirements of the subdivision. In a proposed subdivision where City sewerage facilities are not adjacent to the property but is accessible, the subdivider shall provide, at his expense, an Appreach Outfall Main of sufficient size to serve his subdivision. If the City detezmines that a larger size is required for future extensions, the City shall pay the additional cost of oversizing based on the formula set forth in Paragraph 5.1. In general, the City will not approve a subdivision which cannot be sezved by extensions to the City sewer collection system. Under unusual circtunstances, the City rtiay consider appraval of a private sewage system which will provicie an adequate collection and treatrnent facilities to serve evezy lot in the subdivision. Such system must meet the approval of the City, the Texas State DepartrnP,nt of Health, the Tarrant County Health Departrnent and other appropriate regulatory agencies. In addition an appropriate agreeir�nt betcaeen the City and the subdivider rnast be executed whereby the City may acquire the syst�n at such time as it can be connected into the City �,med and operated sanitary sewerage facilities. 5-1 , � . .�._, , a:- � i,'r a.�:rrl ;_�_�.i; i:'�" n -:�c�.1 9.�.:-. t ��a"-+,s. :��>. �.. 5.3 I,OCATION OF FACn.�F�• 5.3.1 SE4r1ER LINES: S��aer lines shall generaily be lacated in the street halfway betw�en the street centex line and the curb on the south side of east-w�est streets and on the �st side of north-south streets. The Standard Details shall shaw proper locations as approved by the City �hgineer. 5.3.2 SE,'WER SF.RVICE LINES: Sewer service lines shall be laid to each lot. The sezvice lines shall be plastic pipe havi.ng a mini.m�an diameter of four (4") inches and shall extend to the property line, Sewer sezvice lines shall be located on the lawer side of each lot and as approved on the final constructa,on plans by the City. In general, only one Iot shall be sezved by a sezvice line. Undex. unusual circtnnstances whereby a single service line can serve two lots, if approved by the City, the minimiun diameter sh.all be six (6") inches. After the curb and gutter has been installed, the sewer servi�� line location shall be marked by inscribing an "g�� in the top of t�:e curb at the service line location. 5.5.3 MANHOLES: In general, manholes shall be located at all intersections of sewer lines, changes in grade, chanqes in aligrut�nt and at distances not to exceed 500 feet. 5.4 MAl''�RIAIS AND IlVgmAr.r.�mrpN: 5.4.1 PIPE: Pipe used for sewage collection systems shall be PVC plastic pipe or vitrified clay conforr.ing to the Specifications for Construction. All pipe shall be installed in �ch�,.nt r,�aterial as shawn on the Standard Det.ails and in eonforn�ance With .the Specifications for Constructian. 5.4.2 MANHOLES: Manholes shall be precast concrete or cast-in-place concrete and coniorming to the Standa�-d Details afld the Specifications for Construction. 5.4.3 CLF,ANGUTS: In general, manholes may be installed at the upper , end of all sewer collector mains. Cleanouts may be instal,led in lieu of manholes at these locations subject to the approval of the City Engineer Cleanouts shall conform tro the Standard Details and the Specificaticns for Construction. 5.5 TESTIIvTG: All sewer lines shall be tested for infiltration in • accordance with the procedures set iorth in the Spe�ifications for Construction. All testing shall be accomplished in the presence of a City representative. 5-2 �� }} .. '.: - ' .. �. � . ' ' .. . � , .. .: . . ,- �_:... ' �..:�.�. ._::.: ��.-� :�:..�, . , ; . - � ... - . . .. . . � . . . ' . - .. . .... , ' ".' ">,` F. DESIGN STAI�IDARD DRAWINGS 6.1 GIIVERAL: At intervals the city shall adopt detail drawings that planners are to use for constniction details. Planners, or F�ngineers, that propose structures within the jurisdictional area, including the City limits, shall inquise for information regarding suGh standarcls before preparing details for construction. 6.2 AVAIT�ABILITY OF CITY STANDARDS: Planners and Engineers r.�ay obtain copies of City Standards (Drawings) at the san� aost for obtaining same frcxn reproduction fizms. ,� 6-1 .. � '. -.. . ._. . .. .. ,'.- . � � -_ .. 4�" . . � �, ..o; ��. ._ `'� _ .%!_ .. - , . .... _.. ......_ ,. _... . . . � . � . .. .....> .a._._...�-...�>.�.. .,_.c.V::a.�' ' _ . .. __......,. �s....�. v '. .- r.:� . ..-. - _ _ .. . .. . . .. . .... . .._:�.' .. . . . ^ ; _ ,-: .' . . . . . ; :-1,.•,�,�: �:,i;Y'�;i . r l=,,.i r ' . .y � _ ' � � �E� � �� ~ '' �'-,'�;_ ' . .� � ' ` ��. � � • � -� �• � _ _' r ; � ' . � . � e p _ ' ~ � 1� � � O � � • ; - -• � �iE , f � _ . r = � � �� E � � � � � � ' ' • � ' ` • I -�a+�a- k i ,�e � t i �1, � i s € .�� ` � �- � : ; � � << � � ,� � � ; , �r � � � � - � �--'- - = � _ ` - - - -_-�� '� : ' � � E ` ;r ;?�j- - o - � � _._ , y I' ^, . � i � s .'�'i . i� I : J, o Z 'r. s i�� ^ ! r � _ � I z .�. �+ '+ ` Q � ` - � o � � , ` : i � . 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T T �1 9 �K �T r ," < O ff y D I�1 r � _ a x - m na Cp ' >-.f � s m' -�z � � ;c Y MKy� D== �{7 �1�120 �1�1=a b O S a 1�1 L�r= . r .� O s r -� o C y O H In� 2 n . �7 O I'�� n . n� �m Z m m m � ' _.._. .- ... - ' _ � S O ��I�I N9� ... �, ... „. . .., �, . . - - _. „. . a..:. -c,.=� , �..� . ..... �:. �. t.�,.�.... 1 :�:�.t, t -'��;. �5.;,:-. a ; :,++�ti ,t::;, _ . .. .�7►. . . PLACEMENT OF WATER METER BOXES 4PTER TNE �TREET CONTRACTOR IMS GOMPLETED STREET METER BOX S1MLL BE EITNEF CORRUBATED CON9TqUCTiON ANO MAO BlAOED�MO CLEANEO-UP B�CKlLOPE! METAL w�TH C�S7 IRON TOP aND LID OR BEMIND TME CURi ANO BUTTER, TME WATER ANO 9EWEN COM- IM?ERNATIOM4L PLASTICS MfQ.00.A�L PlA3TIC TRACTOR 3NAlL PIACE A WATER METER BOX OVEFI EACM WATEII METER BOX NO.640.WITN B�SS Q MAYES C�ST lERVICE. TNI! •O%SNAIL SE LOCATEO !��BACK OF CURB •ND IRON LID WITM XAIRPIN LACK NO.3P OR TNE 70P AT FINISNEO AR1�OE ELEYATION. TME CURO STOP ON THE •►PqOVED EOU4L. END OF TNE WATER SERVICE BNALL SE LOCAICD WITXIN 8"F1�ON TNC TOP Oi TXE BOX. /Z'%t"N KER, PAINTED BIUE TN�g WORK Wil� BE CONSIOERED SUBSIOIANY TO BIOITEM fOR W�TER SERVICE. � � - . BT TNE � I � OWNERS ; � � i 3/��AN6LESTOP X-14230(SINOIE 9ERVICE) ' � i I�%3/1"X3/4" TEE M-13380 W/2-!/4�� _ I� AN6LESTOP! N-142S0(OOYBLE 3ERVICE) � � 11 _ J iI ' • ' Y� f�_� r � � a� �� F �11�� „ . W . . � �t'M �. •, . i ' 6I G ��p . � . �..�' .: ...' •.�..'• . O I I�j � . .� .':. .•. C g �'�_—_ ! .. ...^;.�ia_.rl ••�.avy,n�' � a ,�_,�,=A� _,. �„ . ' �'= 4 3/�" �NGLE4TOP N-142S0(SINBLE SERV'�. f I�XS/4�%3/4" TEE X-IS386 W/t-I�CURS 1�TYPE�K"COPPER �y -STOP H-I�Z'7S 4ND 2-3/4"�NCLESTOPS � i� M-14230�DOUBLE SERVICE) 1�CURB 3T01 � S/4" FOR SINGIE SERVICE � / CONNECTION • �S TO sE INiTAL�ED ON STREET lIDE Oi T . 1� iOR DOUB�E SERVICE -'�� STONM ORAIN �j .. . " : - . . 7'{•r . .. .CONNECTION � . _.. . t ``� ., - : // ....,.�, .� - . -' . . .. _ . . -�-��\` � . f . ."�j . . `"��2LMOTE'":�.'.. ..►�i+�j.l`►'.s'S:R.�'v.'s'x ..�q1.�`;; � " . -�•..�; � ATER MAIN \�� T w��L sETNE RESPON41811IT• OF TH � 1=0�1U1��'' CONTRACTOR P�ACING W4TER SURVICE 3/4�XD/4"(SiNOLE3ERVICE)ON3/4�XI�(OOUBLE SERVICE�CORPORAf10N STOP `\-�- _� PL4CE WI►TER SERVIC!$ A MINiMUM � (YUELIAR N 15000) WITX STRAI9MT COUPlINO NUT OR M�Y!-3EAL-CORPORATION _ - ��BELOM 7/1E OUTlIOE DIAMETER OI �-VROPCS�D STORM CRI�IN WMEN -��{ l70P WiTM COPPER OUTLET.OR AP►ROVEO EOUtY�LENT. �ERVICE CONNECTION P�ace.`"ceo 8EF011E 3TORK � I 2._�.' � . Z,_o. �- - - - --� r-----� Ii 3 REINFORCIMB � �� I I a0; ' � � �O Tl7 � I II i0 « � � I �` J � � a �- - --� L �f _J PLAN . PL A N 3RADE � BRADE-� j ' � ' . , •",d.. \ '�.. •�a f . . � .p �'e . 4' d�,' ".�. d W. . 4 'm _ .n. W Y ' �� . . . F- V - . ... ... -- - ' ��, W O . . . .a. C J u m J 2 Q 1 J V W W Q t y i Z m o 9 m �6"C.I. PIPE rc� • z » � a u � I >n u I r.-VALVE r�V4lVE O rW�TER L1NE MW�TER L�NE � V�IVES IN YARDS OR OTMEN 4qEAS VAIVES WITMIN RO�OW1`!3 OR OTNEq NOT SUBJECT TO TRAFFIC iAVEO ON SURi4CE0 GREAS ELEVATION ELEVATION GATE VALVE & VALVE BOX b \: dy �• � is� _ i �1\.� ' �� „ � �� X1N�� ' ��, � � ��p � � �� I�I��i��11��ql�fp�� :�:�� 'n��,��.��:�=_�_��i1 �. �.�� .� ,; ; �� :� : _ , �� 6=�1��i��:��1��:��:�=___�:��_�� {��1��tp��g�m��s��i��tl�;t��g��P��i�u�::�=�==a�=��}��,�.�@��i�� i8'A��&E��S��'�l�Sli��i�!•:!�iSli�il3�'-3i�i��efr3�ii3�fr�s?El�= '�e��e�'Jl�e A[i��i�� IB��.-.�-�._'i��I��NeIiItIIi�F�i��III��;'il�i��g=��ia�i�',��I�� M t�� q M�� g;�� g�• !� �a HMtNN�� 'i•!�,�/ ;1 �gg��t6&8r�:��'�r�e�—�B�E:�i�.e!l:e��,}t��'�i�;a['.�.�..��q!�y�� 's��.�lM�:ii�i��==sr��g�i[�s6��g��r�� _s_S�y�Ag��-�i�ii3Hy�m�3)��ei��q:��s�is��gt7�.liin��i��1;t�113�;?i�r�g��;ai��`�e:�=?35=��3i��sl��t;��g�� g[a�iIg3�Hl3��p��g�ii!11��■si-sa'.�=lIH��l��eiiii��?�NPi�,�l:�'�"�s�'i?:3= a��ili'r.��p�iS3�q�9��zs� . ��!l�N�!la6��.i�U��3le��f��l�l:1�liNi��f�I��.�if,:iE?;=ii.F3=?3�i��atA��e�'i a�� /��lf}��I��i1l��`•.�:��3i��,�3'�I�i�t+iL±ill�i':;3�;i�.'l��;':l�IF:+,;::'��'_3va��i1J��iHtl�i�il�#N�`��.�._`�-.�� N�tl1�lR�IwflttlAli�iiN111�l�R�i!��i6�i��i;��il�Ii£fiiii'Ii-iii�9i:l��ii'��ii�+•��=�a•'a:f=�:�s's��i3�!!Eli;l'1d"'9;��.�!",=_;=�� i� �i u � � �'�[ �!��!s(�� Ni,��riin � ' • � ��G=i�i��iiiii,i :i8`�i,��j�lnl+•�i�ii�:::=��:ifH:��ii�iL'iii1fdiiiP.i�� ''/� i' p p�� ,�,��itl��iiiii,��l��i�u��iAii�+iiA��w�ii� ��A��i��"��x�:��_��.�� 6��i��l=11�,��ina�u��`��:��:�� - ��I��'.��'�M��.��ill�i�;�':�:�ti�B11��`£tl�� 1 �!&�IW��:� Ht��;�i��`illi�•#t�'`dt��lii�01��'�:l�ifl:�ii�� , ��.�.��1��!�?��l��.�� . ' ��:�;��;:�;��::�� i��'.��`.��'.�!��a��l�;i��€��l��i�u�� I��:ii��t�:��►;�`i111�1fl��6��tii33if�1#��ili��i ' ��Ii��1��6��flN'J�.f�P.t�ip'.ti"�iiiW�f�AlA��/fi08!l�1�llNtl�!!!'�1�#�� • ��NAOIItv961I�ii911�1��1�i�►Y��.r��!NNdIpM�UltHtl8lill�Awt;',�n�/�Nfl�1�RRlI#tl�il�l��l� ��11��1��'" ��1�� „ �1��111 ��'�� 'i' . : �I��■��l��'��l��il �8�■11��o1��%I�/��1��1 �1��1��e►�.�►/I►��e��, ��8� � %Fd�O�l.��i�l�I�i��1�1��3 .�"-a16�ltil�i��/ . ��r��Gr��„ ��l�� t��p ��,g��r�}�q�Id■��i�Ap��p{h{��,�l�t�pp!l��aq;,g.;-;�;�� (}!�'��a��{=��■ ��T��g��tlBaBN"J+FeCfy3��t��S��sf}iiN'F:��iyFHAi!?q��a�Ef�3�3[�!lgf�,•�,iH(��a�i�ij."e=a�e�E9�a�'x�4s■��i!�3H��yg��p�gl1�Etl��g/��}�� .1��'i��iS��iila��S"i��N�t 3f3i��ll3i�aS3i3aiilil3il�UI#�?{�ii:�i��3E■6il11Ya�Ff1��!il�3�,8�ffi6�� . ��l1��Iml;�;IlT.M.1�'atAp111��iA��1l�I�Hi!i�tH�l1!!�H!lIHHH!!�15�sv��RnJi�iliW3��6t3;;�1lli��■ ■!!'J!l��SNA��'� ' ' ��si�'•s�iii�' �,�� • � r • • • ► • • •� ► � � • • � � �� CI'I'Y OF GRAPEVIl�, TEXAS STANDARD SPEQFICATIONS F�OR _ SZ�ZECI'S AND DRA.a�GE PASSID AND APPROVED BY Tf� CITY COUNCIL OF THE CITY OF GRAPEVINE, TEXAS NOVa�ID�ER, 1982 � . ... . . ._ ,. � . � : _. _,_,. ..r... .» .�.,.a.�,;...�.w, f .,.1 E T1�BLE OF CONTF.NTg ITEN1 DFSCRIPTION p� Item 1 General Requiren�ents 1-1 Item 2 Street �ccavation and Fh�ban}a:�ent 2-1 Ite�n 3 Concrete and Reinforcing Steel (Structures) 3-1 Item 4 Subgrade Treatment 4-1 Itesn 5 Concrete Pavir.g 5-1 Item 6 Asphalt Pavelrnnt 6-1 Item 7 Storm Drains �_1 Item 8 Street Name Signs g_1 Item 9 City Standards 9-1 _ - _ � ,.: : . .: _ ,._. ._:::_ ,. _- . . , .. : � _ _ �:::x: z.; , , , . . , - .. . . . . . "TY,a^L r.-' r L?..�..:..+ r� -'i . . � . . � . ..._.. � . . . . . . ._ _ _ ..� _. ..M�. ... .. � . . . DETAII, SPECIFICA^1IG1VS ITE'�i t 1 - GII�RAI, RDQUIRF3.g�VTg 1.1 MA'�rAr�; �ese specifications are intended to be s� w�itten that only materials of the best quality and grade will be furnished, The fact that the specificatians may fail to be sufficiently cor.�lete in some detail will not relieve the Contractor of full responsibility fcr providing r.�aterials of high quality and protecting them adec�,iately until ' incorporation in the project. The specifications for materials set out the min'1rRun standard of quality which the Owner believes r.ecessary to procure a satisfactory project. No substitutions will be pexm.itted until the Contractor has received written permission of the City to make a substitution for the material which has been specifieci. �:'here the term "Or Approved Equal" is used, it i.s understood that if a �^aterial, product or piece of equi�menL of the specified n�-une and quality is furnished it will be approved, as the nart-;��. �ade name and quality was used for the purpose of establishing a standard of quality acceptable to the C�mer. If a product of any other name is proposed for use, the City �gineer's written appraval must be obtained before the proposed substitute is procured by the Contractor: Wherever . the tenn "Of Equal" is used, it is understood to mean ��pr Approved Equal��. Where the terms "Or Approved Fqual" or "Or Equal" are not used, the Contractor shall furnish the material as specified and no substitutions will be allaaed. 1.2 W�ORI��1vSHIP: These specifications conta.in detail instxuctions and descriptions covering the major items of construcuon and worlanans hip . necessary for building and �leting the various units or ele.ments of the project. The specifications are intended to be so written that or.ly first class worlar�nship and finish of the best grade and quality will result. The fact that the�e specifications may fail to be so cca��lete as to co�Ter all details will not relieve the Contractor of full responsibility for providing a cor,g�leted proj ect of high crn,a i;ty, first class finish and appearance, and satisractozy for operation, all within the apparent intent of the plans and specifications. - 1.3 HANDLIT.G N1A��^EF2TAT.S' NOT APPROVID: The Contractor shall remove from the site ar_y materials found to be damaged, and any materials not neeting the specifications. These r��aterials shall be removed pror�tly, unlzss the �hgir�eer will accept the materials after repairing. Materials found to be damaged, or not acceptable to the Engineer, shall b;e rerr�ved if installed and then found to be damaged or not acceptable. 1-1 � � Inspection before installation shall not relieve the Contractor frcff:i any responsi.bility to furnish qood rn�1 i�, �t��s. 1.4 C3�EAR.Il�1G A1V'D GRUggI1+IG; The Cont,r-actor shall do all clearir.g and grubbang necessary for construction operations. All trces, branches, lir.ibs, and roots shall be re.maved and disposed of by the Contractor so as to leave the right-of�way in a neat and presentable condition. Clearing and grubbing shall be done so as not to injure or d�ge adjacent property. In disposinq of brush, particular care shall be taken so as to elir.unate the possibility of st�rting a grass fire. Any and all damages outside the lir.tits of construction right-of-way shall be paid for and settled by the Contractor at his exp�nse, 1.5 SAF�.'TY AND PROPERTY PROZ'ECTION: 1.5.1 TRAF�'IC CONTROL IN WC;gR AREAS, gARRICp�F�� S �,,� c�„�I,y PROVISIO�?S: To protect persons fram injury and to avoid pyc_�r�y darrage, adequate barricades, construction signs, torches, red lanterns, guards, and other traffic controis as required shall be placed along aI.I roads, street crossings, etc. , and shall be maintai.ned during the progress of the construction work and until it is safe for traffic to use tlze construction site. The Contractor shall co�ly with the requirements of the Texas Manual, "Traffic Control Devices for Streets and Fiighways". A copy of the hlanual may be examined at the City Hall and shall be obtained by the Contractor for use during constzuction. E�ccavations for construction operations shall be conducted in a maru�,er to cause the least internzption of traffic. Where traffic must cross open trenches, the Contractor shall provide suitable bridges at road crossings, street intersections and driveways. 1-5.2 F'L(7tJ OF DRA.IlVS Arm SES�IERS P�A�ITAINID; �dequate provisions shall be r.iaGe for the flaw of storm drains and water courses encountered during the construction and the structur�s which may have been disturbed shall be satisfactorily restored upon c�r,�letion of the work. 1.5.3 PROPERTY pRp�CTIpTJ; T�-ees, fences, signs, poles, guy wires, and all other property shall be protected t:nless their reirbval is authorized; and any property c3�mage shall be satisfactorilv restored by the Contractor to its original condition or better. The Contractor shall make adequate provision for the protection of perma�zent paving, both concrete and asphalt, from damage by construction equipnent. -- 1-2 , �,r� .{.,?r. C� . ��` � . .,� ... .... .. . .. � .. .�. - •: .:: . . . . . . ' . ' , . . . �� . , . '. . . . . . h . t..:1,7 . , x • . . '.. . . ,. .. -� ' :.:�L . . , :...r:....�. .':>.-...d.�►d . �...._._�.�.n... ._. ... . � .- . 1.6 GU�1FtANT�: The Contractor shall guarantee the wnrk for a period of two (2) years after date of acceptance by the City. During thi,s period, the contractor shall make any renairs and/or replacements of defective materials and corrections due to poor wor7Qnanship, all as may be required for full cc�n�liance with these Specifications. This guarantee shall apply to all matters report� by the City in writinq wi,thin said two (2) years period and this guarantee shall be aovered by the P7aintenance Bond. 1.7 WATER FOR CONSTRUCrION: The Contractor shall furnish all water required for construction. The contractor may purchase water frcm the City at published water rates. Al1 connections t� the City's water system shall meet the approval of the City. The contractor shall post a deposit with the City to use a City construction meter. 1,8 DISPOSAL OF �C�'SS N�,T�L: The contractor shall dispose of all excess material. 1.90 MATEkZIAL AND CLEAt�'LTp: During the prosecution of the 4rork, the Contractor shall maintain the project site in orderly and acceptable r.�anrier. Upon co�letion of any unit of work, it shall be maintained by the Contractor unti.l acceptance by the Owner of the entire work covered by this Contract. Upon completion, as a whole of the project, the contractor shall clean and remove frcan the site of the project surplus and discarded materials, te.�orazy structures, and debris of every kind; and shall leave the site of the work in a neat and orderly condition. 1.10 LABORATORY CANTROL: Lab work in regard to soils where paving is to be constructed shall ocx�rise the follawing: (1) Atterberg Limits tests shall be made at intervals not exceeding 500 feet and where change in materials occurs. These tests are to be made using sa�les obrained from proposed subgrade areas. Tests results fran the laboratory perform.ing same shall be sul�itted to City Engirieer along with developer's proposed paving design so that the City can either approve the paving methods or requise changes. In general, asphalt paving subgrades have Plasticity Index (P.I,} of 15 or more, lime treated subgrade is to be used, and where the P.I, is less than 10 cement treated subgrade is to be used. - With the City's written approval, natural subgrade having P.I. less than 10 may be used without stabilizing material. For concrete pavement, subgrades having P.I, in excess of 15 will require lime treatr�ent and where the P.I. is less than 20 a sand cushion shall be installed under the paver.�ent. 1-3 r • .,:. .. a-�-x•,.., ,:-<. � . �_ .., _ �_.._ .. . ,. �-. .. , .; ..: ..,... , , � . - . ._ -„ . . -. . • . . , . � . .- > (2) �i1�'lell Sll�r3dE�' �S'2d�rit 1S CC�T��.@�d� �StS S�.Zl � Iii3C�C� t0 � insure that the material is properly mixed and pulverized. (3) When subgrade compaction and/or �nbar�nt is in progress density tests shall be made to dete� whether P�r density is being attained, Unless otherwise approved }�, the CitY E�gin�r, the tests shall be perforn�d at 300 foot, m�.�cimi.un, intervals to verify that 95� of Star�dard proct_or Density is obtained, Laborato�, �� s�ll be presented to the City, for approva]., prior to c��on of curbs or paving. In addition to soil tests, laboratory wr�rk for concrete to be usec3 � paving or curb and gutter shall consist of: (1) P•lixing plant control for cont_--ol of r.vx and repor-'-�..:uzg to City, and others, to insure carr��ian� �,,�i� � S.pecifications. (2) D�aking and testing beams and cylinders as required for verifying cce�liance with specifications. Test cylinders shall be made in groups of three (3j for 25 cubic yards, or less, placem�t; for one test to be made at '7 days� one test at 28 days, and the remaining c�,lznder to }� t�sted only if . other tests appear questionable. (3) Prel.uninary t�sts and test cylinders for approval of mix design before construction beqins may },� �� City Ehgineer provided the Contractor can furnish a mix design frcan recent project that meets t,�e ��ification requirements, including copies of test �esults t:o prove adequate St�.ength. The mix and materials, hc��ever, �ust be frcm the same source that is proposed for use on this project. The Contsactor shall e�lay a qualified comrnrcial laboratory, and shall pay tor the lab w�ork directly. Copies of all reports sha11 }�e furnished and ae City. The laboratory to perfoxm the �aork shall be- acceptable to, PProved by the City IIzgineer. E�ID �F I'Igi 1-4 �,} %� _ . . . - - . . - .< ,. �.., .k .� :. �;.>,, _ ___. _ _. .... ITEhI 2 - STREEr EXC�I�TATION 2.1 DESCRIPTION: "Street �cavation" �,�ill consist of all the reguired excavation within the limits of the rightrof-way and areas adjacent thereto, the removal, proper utilization or disposal of all excavated materials; and the construction of all emban}anents, and the shaping arid finishing of all earth work in confozmity with the lines and grades as shown on the plans or established by the IIigineer, all in accordance with the specification requirements contained herein. A pezmit will. be required and a bond posted before starting construction. 2.2 Q�ASS7FICATION: Without regard to materials encountered, all street excavation shall be unclassified and shall be designated as "Unclassifiecl Street �cavation" which will include all materials excavated. It is to be distinctly understood that any reference to rock, or any other material on the plans and/or in this specification is solely for the City's and the Contractor's infon:tiation and is not to be taken as an indication of classification of excavation. � 2.3 CLF..ARING AIv� GFLBBING: Clearing shall consist of r�val and disposal of all trees, st�s, bnlsh, logs, down timU�r, rcots, zubbish, vegetation and other objectionable matter from the construction site. The site areas to be e�cavated and filled shall be cleared and grubbed. Gn:bbing of roots and st�nps will be requised t,o a depth of�one (1') foot below the finish grade and to a depth of one (1') foot below the existing ground surface in areas to receive esnb�n]arent, All cleared and gn�bbed material shall be disposed of in a m-�nner satisfactoiy to the E�gineer. 2.4 EXCAVATION: A11 excavation shall be in accordance with the lines, grades, and typical sections as shown on the plans or established by the Engineer. Unless othen+�ise shc�m on the plans or established by the Ehgineer, street excavation will be riade to the subgrade of the roadway and finished grade of peskways. Where excavati.on to grades established in the field by the Enqineer w�uld terr.tinate in unstable soil, the �hgineer may requi-re the Contractor to remove the unstable soil and backfill to t-he required grade with suitable material co�acted, in an approved manner, to a satisfactory density. �7Yiere excavation to the gracie established in the field by the Ehgineer terminates in loose or solid rock, the Contractor may be required to e.ti�tend the depth of excavation six (6") ir.ches and backfill with select material compacted, in an appraved manner, to a satisfactory density. Su'r�ject to the approval of the �gineer the select riaterial backfill. 2-1 _�_ � . ,.�,;:.�.,f _. .. . . . may be obtair_ed frcan any point within the right-of-way where suitable backfill material is available. The Contractor shall conduct his operat.ions ,in su� a �n� �t adequate measurements may }�e taken before any backfill, as *-�+,;r� above, is placed. A portion of the existing paveme�zt, including }�oth g�avel base and asphalt surface, shall be �horouqhly scarified, salvaged and used for the transition paving base. Care shall be taken in r�m��g �e gravel base so as not to include ariy oi the subqrade. After rer.moval of the pavement the excavation shall be continued t,� pr�p� qrades and then � treated in accordance with Item 4. 2.5 PROVISIONS FOR DRAIl�IAGE: If it is necessary iri the prc�rcution of the work to interrupt the natural d�.a��ge of the surface, or the flcw of artificial drains, the Contractor shall provide teit�oraY-.- =a;,r,aqe facilities that will prevent damage to public or private int��ests, and shall restore the original drains as soon as the c�rk will pe�it. The Contractor shall be held liable for all damages which may result frorr neglect to provide for either natural or artificial drainaqe which h�,s work may have internzpted. 2•6 ET'IBANl�'�'I.': After the site has been cleared, the qround surface upon ��hich e�ts are to be constructed shall be scarified in furra��s uniformly spaced so that at least fifty (50�) per cent ot the surface will be broken to a depth of at least four (4") inches, Backfilling and construction of fills and ennbanlanents during freezing weather shall not be done except by pernission of the City F�gineer, No backfill, fill, or esnban]arent materials shail be installed on frozen surfaces, nor shall frozen materials, snvw, or ice be piac�i in any backfill, fill, or embanlanent, • �nban}�nents shall be constructed of suitable materials and sha11. be , placed in successive horizontal layers of not more than eight (8") inches in depth, loose measurement for the full width of the e�t and in such lenq-ths as designated. Stim�s, trees, rubbis�h, vegetation or other unsuitable materials shall not be placed in emban}�r;ts. A11 constn;ction traffic shall be uniformly dis.tr.ibuted ove�. ,�e �.�e surfuce of each layer of the embanla�nt. A ��b'laint�.'•iner" with a blade at least ten (10') feet in leng�,h shall be kept in operation on the embanJa�nt for the purpose of unifo�nil.y mi.xir�q, spreading, pulverizing, and consolidating t1-ie embaril�nt material. After a layer of �nban}�;�ent material has been placed and bladed, it shall be sprinkled, if directed, in the quantity as deten:lined by t�le E�gineer, and rolled to cca�actien with a tampi.riq roller, or approved type, drawn by a suitable crawler-type tractor. The roller shall pass over every part of each layer for a mir.imiun of si.� (6) tir,ies. In the event water frc�i tt-.e City Water Dains is used, it shall be metered and paid for by the Contractor. 2-2 . .. . . . � . • .. . . � .. . . I -. .. � �� , �.(�l , ..�C''1 . .- . • .- .. .. . ' ' ' .': . . .:.-'. ....:...:� . ''�." " �n)�� . .�. � . .. .. •::�r��.� ...... ...�.tI��Y '. ..�:fna�'!�...: ..' . No successive layer shall be placed until the I.�y�. �� ns..zuction has been thoroughly bladed and rolled to the satisfaction of the Ehgineer. After a section of the emban}��t has }�een �leted, it shall be maintained to grade and cross-section by bladinq when and to the extent required. IInba.n}m�ents placed over and adj acent to pipes, culverts, and other stnzctures shall be of suitable materials, and sha]1 be placed in successive horizontal layers of not m�re than eight (8") inches in depth, loose measure�ent, and each layer unifoYmty m.ixed, pulverized and thoroughly cro�acted t� the satisfaction of the E.hqineer by the use of rakes, hand tai�s, and/or other approved methods. S�eci�. care shall be taken to prevent any wedging against the structure. This methoc3 of consolidation and c�action shall be used for such distances along er.�banl�nent adjacent to structures as may be necessa..�.y and in other areas where blading and rolling wr�uld be ir��ractical. 2.6 EML ANKt��I'S CONTAINIlVG ROQC: Where a large�portion of the materials excavated ccnsist of rock, the roc]c may be used in the construction of the e�t as hereinafter specified. The maxiirnun dimension of any rock used shall not e:{ceed fifty (50�s) per cent of the heignt of the emban]anent and in no case shall an� rock over twenty-four (24") inches in its maxim� dimension be place in the embanla�nt. When the greater portion of the embanlarn�t shall be constructed as required in the preceding paraqraphs, and the rock shall be carefully d.istributed throughout the emban]�nt and filled around with earth or other approved fine material so that the interstates betwc�n the large particles are filled and a dense, co�act, uniform er.ibarilanent is secured. When embanlan�nts are t.o constructed principally of the rock, the rock shall be placed in successive horizontal layers, not to exceed thirty (30") inches in depth, for the full F�idth of the emba�nt ancl the interstates between the large stones filled, insofar as practicable with small stones and spalls. _ The ugper eight (8") inches of all embar.lanents shall be composed of earth or their acceptable material. 2.7 EXCESS EXCAVATION: Unsuitable street excavation and suitable _-. street excavation i.n e.�cess of �iat needed for construction shall be clisposed of as directed by the Engineer. In general, suitable excess street excavation will be used in the construction of par]c�aays, wideni.ng 2-3 � . _. . .. , . .... . . :.. ... _ . _ . > .. ..- . . _ .. . . , ,: _ y .::. . _- _ _ _ . ,_ _ . .; _ _... ...... _, , _._. ...� _. ,.�:�... a�.�.a,�:�.: cf embanlrn�ents, flattening of slopes, etc. , but if necessary to waste any material, it shall be disposed of in s�� a �n�. � � present a neat apgearance ar.d to not �struct proFer drainage or cause injury t.o street i�roveirn�nts or to abutting propert.y. 2.8 SUBGRADE FIlVI�x: The subgrade will be accurately finist�ed to ttze required grade using pneumatic rollers, bladinq equi�ent, and sprin}:ling as necessary for an accurate, smooth f�r,;sh. be required to 95� St.andard Proctor Densi ��ction will ' compacted in lifts to 95� Standard Proct4r Densi�at�nt shall be EL�ID OF I'I�I 2-4 --.. � . _ >.S �7'�;c.xl ,.:::i _.1. :, ti , ,.: - . :? --. ., ,: - . ., ITET�I 3 - CONCR��I'E AND REINFORCIlVG STR�T (STRUC'IVRE,S) 3.1 GIISERAL: Concrete shall be composed of portland c�nt, fine aggregate, coarse aggregate, water and water di_�rsing agent properly proportioned and mi�ed as hereinafter specified. All structural concrete shall be 3000 psi quality unless otherwise shc�an on the plans. 3•2 MATERIAIS: Portland cement shall conforsn to the specifications and tests for T�rp� I portland ceir�nt of the American Society for Testing Materials, Serial Designation C-150. Fine aggregate shall confonn to the Stanc�ard Specification for Concrete � Aggregate, AS�I Designation C-33. In addition to the requir��t of the ASTM Specifications, tt:e fine aggregate sha11 also conforn to the following: 1. Loss shall not exceed ten (l00) per cent by weight in five (5) cycles when tested for soundness in accordance with AS2Tq Method of Test Designation C-88, excep� as noted in AS1T�I Specification Designation C-33. 2. The amount of delerterious substances shall not exceed Recc�rcar�nded Ferniissi.ble Limits as set forth in AS�i Specification Designation C-33, and "other deleterious substances" will not be allawed. . 3. The mortar, for test of fine aggregate, made and tested in accordance with Standard Method of Test for bl�asuring Mortar-Makir.g Properties of Fine Aggregate, AS�1 Designation C-87, shall develop a c��rehensive strength at 7 and 28 days of not less than 100 per cent of th�,t developed by the motor specified in the method as the basis of cca�ensation. Coarse aggregates sha11 conform to the Star.dard Specifications for Concrete Aggregates, AS� Designation C-33. In addition to the requirements of the AS�I Specifications, the coarse aggregate shall also confozm to the follawing: - 1. Wear shall not exceed 40 per cent when tested according to AS7.M Standard P•iethod for Abrasion of Coarse Aggregates by Use of the Los Angeles i�lach�ne, Designation C-131. 2. Lcss shall not exceed 13 per cent by weight in five cycles when tested for soundness in accordance with ASTM Methcd of Test I'iesignation C-88, except as noted in AS�Z Specification Designation C-33. 3-1 _ . . .- . • . i.. .: . _ . . " - ,.... . .' ..:. . � . � - . � . . . .._ . .. . . - � . . . . . . ".t J a n�,�.�iv�,L ....`...,3� !t -4�. . . - . ..._... .. _ . . .._ . _ ..�._ ... .. 3. The amount of deleterious svbstances shall not exceed Reco�nded PernLi.ssible Limits as set fori-h in AS�I Specifications Designation C-33, and "other deleterious substances" will not be allawed. For the Contractor's convenience, the AS'gi qradinq require�nts applicable to thi.s project are listed hereinafter; FIl�TE AGGREC',ATE SIEVE SIZE - $ PASSII� 3/8Inch - - - - - - - - - - - - - - - - - - 100 No. 4 - - - - - - - - - - - - - - - - - - - 95 - 100 No. 8 - - - - - - - - - - - - - - - - - - - 80 - 100 No. 16 - - - - - - - - - - - - - - - - - - - 50 - 85 No. 30 - - - - - - - - - - - - - - - - - - - 10 - 60 rro. 50 - - - - - - - - - - - - - - - - - - - l0 - 30 No. 100 - - - - - - - - - - - - - - - - - - - 2 - lo COARSE AGGREIGATE SIEVE SIZE S4. OPII�IINGS $ PASSING 2" - - - - - - - - - - - - - - - - - - - 100 1�� - - - - - - - - - - - - - - - - - - - 3/4" - - - - - - - - - - - - - - - - 95 - 100 3/8" - - - - - - - - - - - - - - - - - - 35 - 70 #4 - - - - - - - - - - - - - - - 10 - 30 ' - - - 0 - 5 water for concrete shall be clean and free from oil, acid, a].kali, organic matter, or other harmful i�urities. Water which is sui.table for drinking or for ordinary household use will be acceptable for concrete. ��here available, water shall be obtained frcen mains or a water works syster.t. 3. CONCR�1'E pROFORTIGNS AND COP�SISTII�ICY; Concrete shall be proportioned to give the necessary workability and strength and shall conform to the follocuing governing requirenv�nts: 3-2 tir Min. 28 Day Min C�nt Max. Si.ze Max. Water S1� Coc�ressive Bags Per Of Coarse Gals. Per Inches Strength Cu. Yd. Aggregate Bag 3000 5.5 1�" 6.75 4-6 2500 5.0 1�" 7.00 4-6 1500 (cradle) 4.0 1�" 8.00 3-4 Stabilized Backfill 2.0 3" * 8.00 3-4 ' *riay be "pit run" aggrecJate. The proportion of fine and coarse aggregate shall be such that the requiremP�ts of the follawing table are co�lied with: Maxismun Size of Coarse P.ggregate Ratio of Ccarse Aggregate to Fi.ne Aggregate�on B�sis of Dry and Rodded Voltunes Minina�n �u;�l 3/4" 0.6 1.5 1" and over l,p 2.p In no case shall the amount of coarse material be such to produce harshness in placing and honeycombir.g in the structure when fozr.�s are resnoved. � In the determination of the amount of water required for mix, consideration shall be given to the moisture content of the aggregate. The net amount o� water in the r.�ix will be the amount added at the mixer; plus the free water in the aggregate; and minus the absorption o€ the aggregate, based on thirty (30) minutes absozption period. No water allowance will be made for evaporation after batching. The methods of r.ieasure of materials shs.11 be such that the propoz-;icns of water to cement can be closely controlled durir.g the grogress of the work and easily checked at any time by the �gineer or his representative. Zb avoid unr.ecessazy or haphazard changes in consistency, the aggregates sr.all be obtained from a source which ti�ill insure uniform quality and grading during any single day's operation and they shall be delivered to the work and handled in such a manner t-hat t1:e variations in moisture content will not inte.rfere with the steady production of concrete of reasonable degree of uniformity. All sources of supply :,'hall be approved by the Ehgineer. All �raterials shall be separately and accurately measured. r9easuresrnst may be made by weight or by vol�sne, as rnay be elected by the Contractor; hcwever, all E�quipme:�t for r.ieasur�nt of materials shall be subject to approval by the Engineer. 3-3 .. . . . ' ' � . _ . . .. , � .��.t . .. .x�.� . . . . . . - . � . ..a. -..rvJ-.�_:�u.�. ' �y . . . ..� lV.r�T'. __'...... ..nf�.✓..n . .... , . . ..... ... ... . ..v . - . _. . .. . . The proportions of the mix shal], }�e such as to pr�u� �� at can be puddled readily into the corners and angles of the forms and around i-he reinforcing without excessive spadinq, and witho��t segregation of undue acc�sr�ulation of water or laitance on the surface. 3.4 TRiAL rII�S: At least 35 days prior to the l�eqi nn i nq o f ��crete placing, the Contractor shall su�nit sanq�les of materials he proposes to use and a statement of proportions proposed for severa], eoncrete mixes, having sufficient range in sliar� to cover all placing conditions. The �gineer will r�+�;re that laboratory tests be made and s�� nges as may be necessary to meet the rern�ire�� of the specifications. Laboratozy tests on trial mixes shall shaw a 28-day strnngth 15 percent higher than the stated minim�un 28-day strength. Fran these preliminary tests, t�-�.e ratios betw+een 7-day and 2g..day strengths shall � - established to determine at 7 days the strength necessaYy tc �tisfy the required 28-day strenqths. These ratios shall be modif�:� as the work progresses as indicated by result of tests on cylinders made fran field mixed concrete. If, during the progress of the work, it is found in�possible to secure concrete of required w�rkability and strenqth r„rith �e ��rials being furnished by the Contractor, the �hqineer may order changes in proportions or materials, either graduation, source, or brand, or proportions of the miYture after their having once been approved except by specific approval of the F�qine�,r. The Contractor shall have the prel�minary testinq done by an approved testing laboratory, and shall pay for alI prel�mina�' tests ori ag9z'e�Jates and test cylinders. If Contractor shall have the prel' � testin done b an a testing laborato �� g y PPrO� ry, and shall pay for a).1, preZimi.nary tests on aggregates and test cylinders. If Contractor can provide mix design and satisfactory test cylinder record from a recent job using same materials, then the preliminary test requirement will be waived, 3.5 TR�INSIT P�IIX CONCRr,'-TE; Transit mix concrete will be permitted in lieu of mixing on the job, provided all of the follc�wing are ccmplic-d with: . (1) All requirements otherwise s-pecified for mixing on the job shall apply. (2) Sufficient transit mix equi�.�nent shall be assigned exclusively to tt�.� project as required for continuous pours. 3-4 —_ r .... ...:.. _ � .....<._: . . y :..�E.;�:,«.,t,nyr (3) Satisfactozy evidences shall be fux�ished that the deLivezy of concrete shall be continuous at regular and uni,form intexvals without stoppages or interruptions. (4) Al1 concrete shall be deposited in the forms within 45 minutes after water has been added to the mix. Concrete retained in the t��-uck longer than 45 minutes after water has been added to the mi.x will be rejected. 3.6 TESTING AND COiv�'RpL OF rIIX DURING CONSI'RL�I'ION: SuffiCient test cylinders will be made by the IIZgineer at int,ervals to dete�mine ccripliance with the specifications, Co�ression tests of concrete • cylinders will be mac� by an independent testing laboratozy, selected and paid by the Developer and/or Contractor. The selection of fihe laboratory shall be subject to approval by the City, The control of proportioning and mixing of all ready mi.x, transit mix or central plant concrete shall be under the supezvision of a trained representative of an est�.ablished independent testing laboratory, which laboratory has been approved by the Owrzer. The laboratozy represer.tative shall caork in cooperation with the Engineer, and shall furnish to the F�gir.eer a s�zy of all tests which are perform.ed and for each concrete pour shall furnish a certificate of con�liance with the specification. No concrete shall be poured without the la�oratorv representative being present at the batching plant. - All cost for services of the testing laboratory, except those tests in connection with the r.tix design and trial batches at the L�egi nn i nq of the project shall be borne b� the Owner. Tests are r��;red for initial batch designs shall be paid for by the Contractor. For concrete pours of ten cubic yards or less, the F,hgineer may waive the requisements for a laboratory technician. 3.7 FORNLS: Forms shall be built m�rtar tight, and true to line and grade. Studs, walers, and approved fozm ties shall be used at the proper spacing and of the proper size to mainta,in straight lines on all vertical surfaces. Forms for surfaces requirinq a rub fiaiish shall be lined c�ith plywood, "P�lasonite" or other approved fo�m lining. Forms on vertical surfaces shall r�nain in place a miniirnan of si.� (6) hours. � Foxm,s under horizontal surfaces shall remain in piace seven (7) days. � 3.8 PLACIr;G CONCFcETE: The Contractor shall give the Engineer at least 24 hours advance n�tice before starting to place concrete in any unit of the structure to permit the inspection of forms, the reinforcing steel 3-5 � .�� :, ;- .�.� � � -, . .. �.� ,� . . . , . . . placement, and preparation for pourinq, Unless authorized by the Engir.eer, no concrete shall be p1ac� in any un�t prior to the ccer�letion of the form work and the placemP.nt of the reinforcement. The sequence of placing concrete shall be as pravided on t� pl� or in , the specifications. Z'he operation of depositinq and c�acty�g � concrete shall be aonducted so as to form a cca�q�act, dense, i�ervious mass of uniform texture which shall show sn�ooth faces on all surfaces. The placing shall be so rec�7ulated that the pressures caused by the plastic concrete shall not exceed the loads used in the design of foz�z7.s. Carei-ul attention shall be given by the Contractor to the proper cvrinq � of all concrete. 3.9 FREEZING WEATHER: When depositing concrete at or near freezing te�ratures, the concrete shall have a te�erature of a least 50 degrees F. , but r�ot more than 120 120 degrees F,, i„�� agq�.�__iws �,z heated. The concrete shall be maintained at a te�rature of at least 50 degrees for not less than 72 hours after placing, or until the cencrete has thoraughly hardened. When necessa�y� coneret.e rtaterials shall be heated before mixir_g and heating apparatus such as stoves, salamander, etc. , sh,all be supplied to maintain tt-,e concrete at the requl-r'ed t�m�erature. The Contractor shall be responsi,ble for the pretection of concrete placed under any and all water conditions. ' Concrete shall not be placed on frozen or thawing base anci shall not be poured when tecr�erature is 40 degrees, F. , and falling, Concrete may be placed 4�hen temperature is 35 degrees, F. , and rising. 3.10 CCT'�T�G; All concrete shall be cured by keep�g ��uously wet for seven days after pourir.g, pn surfaces which do not r finish, the concrete may be cured by supplying a curl.n�e� a �� of water curing if the Contractor so desires. �� g �°� � lieu °Hunts Process" or approved equal applied as closely beh�ind�n�rete be finishing as pos�ible. 3.11 RUB-FINISHID EXPpSEp SUp.FAC�S; the follawing exposed vertical concrete surfaces shall be given a rubbed finish: _ The exposed vertical surfaces to a point one foot (1') below the final ground line. The rubbing operation shall be in accordance wi�h the follaving provisions: As soon as fozms are r�noved, all necessary painting shall be done. Y�hen the pointing has set sufficiently to permit it, all surfaces rec�uiring surface finish shall be wet with a brush and given a first sur�ace rubbing with a Pd0.1 16 carborundtun stone or an abrasive of equal quality. Tlie rate of re�roval of forn�s shall be determined by the rate 3-6 - _ ri � • . .. .:, � _ ._�... .�:. . :_. . � - . .. ':.�u _ " +,� � � ' — . �- - . . . . , . . _ . _ . - . _ ., 4 � � .�:..s�.1 rzv.[?. .1_ T:: ,1 -t�� . ..,.� -: e E :hy :��:". -. . . . . . . . . . . .. . - . . ._ .. ..�. . . . of the co�lete rubbing. the n�bbing shall be continued sufficiently to bring the surface to a paste, to r�ve all forms marks and projections, and to produce a snnoth dense surface cvithout pits or irregularities. The use of cement to fonn a surface ste will �t be permitted. The material which has been ground to a p�ste in this process shall be carefully spread or brushed unifozmly over the surface and allawed to take a reset. In general, chamfered corners shall not be rubbed in the first surface rubbing. During the process of conditioning the cc�leted structure for final acceptance, the surfaces of the entire structure requiring finish shall be cleaned free from drip r,�arks arid discolorations and shall be given a final finish ruL�bing wi.th a No. 30 carborundum stone or an abrasive of equal quali.ty, pn ��Zetion of � this rubbing, stone or an abrasive of equal qualit�,. pn cc�letion of this rubbing, the sur�ace shall be neatly stripped with a bnish and mortar and the surface shall be allawed to take a reset. The surface shall then be washed down with clean water. The entire structure shall be left with a clean, neat and uniform appearing finish and shall be uniform in colcr. 3.12 REIlVFOFCING STEEI,: Reinforcing steel shall�be billet steel, intern��diat� grade, deforn�ed bars, conforming to A.S.T.M. Specification A-15, or shall be rail steel, deformed bars o�nfornung to A.S.T.ri. Specification A-16. All r,iill scale shall be remaved before placing and bars shall be kept clean until concrete is placed. The steel shall be placed in the forms as shown on the plans and shall. be r,iaintained in place by wiring or by any other effective means approved by the Fhgineer. END OR ITa�t 3-7 . . .,..... : .. . . .:,. , _ ,. :.; „ . ... : .. .. ...... - ..:, _ . ._ . ._,..:., , .; . . _ . „ _- . ,.;..�„ �:_;. : ITET�i 4 - SUBGRADE TREA��Tr 4.1 GIIVII�AL: Excavation and �nbaril�nent shall be performed in accordance with Item 2 and then treated as herein specified. Subgrades for all asphalt paving shall be scarified and treated with either hydrated lime or Portland Cement for the width of pave�nent back-to-back of curbs plus six inches (6") on each side, with mininnun depth of six inches (6") for residential streets, si:c and one-half inches (6�") for secondazy stseets and seven inches (7") for major and industrial streets. Where concrete pavement is to be plac�d on subgrade having P.I, of less than 20, the subgrade stabilization using lime or �ement may be csnitted. In such cases the concrete is to be placed on 2" thick sand cushion that is placed on the finished subqrade. The concrete is to be poured directly on the sand cushion. The sand material used for this purpose shall be granular material having a plasticity index of not to exceed 7. - It is not required tha.t ttiis material be a washed and gradec �--d, but it is intended that the material be free of clay lu�s and ot��r plastic materials. No gracling requirement is necessazy other than t�-,e requirement that no rock or other particles in the mix shall exceed 3/4" maximLun size. Where sand cushion is used, the subgrade shall be finished accurately to a grade 2" below the bottam of the caoncrete slab. The sand cushion materials shall be applied on this subgrade and accurately finished to a uniform thiclazess of 2". In such cases where there may be a slight inaccuracy in the subgrade elevation, such inaccuracies may be c,orrected by the variation in thicJmess of the sand cushion. It is not required that the sand cushien be co�acted, but it shall be uniformly finished and sprinkied where there is any tendency for it to be blawn or shifted by the wind. 4.2 SULGRADE TREA��N'I'; Subgrades for all asphalt pavement, and concrete pavement where P.I. is 15 or more, or where P.I, is 10 or less shall be treated with either hydrated lime or Portland Cem�nt. 4.2.1 LIt� TRF',AT1�VT: If natural subgrade consists of a. dirt or a , mi::ture of dirt and clay, and has a Plasticity Index of 15 or rtnre, Lime Treated Subgrade shall be used. If required, tests by an Independent L�oratory shall be made prior to preparation of paving plans. All materials and construction shall cem�ly with the requirements of 1972 Texas Highway Depart�ent Specifications Item 260, with 6� by weight of Hydrated Lime added (4� Ibs. per inch of depth per square yard) and compacted to 950 of Standard Proctor Density. If requested by the Contractor, Independent Laboratory tests may be made to determine any reduction in the amount of lime required to reduce the plasticity index to a maxinn�n of 10, but in no case shall less than two percent (20) of lime by weight be used. The City's �ngineer r,tust approve this reductioi� in the amount of lime. 4-1 . . . ._ . ... . . ' . _ . . . . . _ . . . . _. "? .- c`- �c � •.y . 't_ . . . . . . .... ...�... . .... .. ....s- .. �-:�...�-' � . - � ... _ _ . . ....::-_� . �......�...� � ...`-_�....�:�ia..�.-.:: ..::.r._.�..�. . ..: ...:. ._ ...... ...�: . . ^�� . .. . . _ . .. . _. . . . .. 4•2•2 c�'m� TRFA'Il�]T: If natural subgrade consists of sandy material, and has a Plasticity Index of less th�1 10; C,ement Treated S�bgrade shall be used for asphalt pavement. All materials and construction shall co�ly with 1972 Texas Highway Depart�a�t Specifications I�m 270, with 6$ by weight of Portland Cement added (5 ].bs. per inch of depth per square yard) and cc�acted to 95� Standard Proctor Density. If request�d by the Contractor, Independent Laboratory tests may be made to deterniine any reduction in the amount of cement required., but in no case shall less than two percent (20) of cement by weight be used. The City's Ehgineer must approve this reduction in atrount of Portland cem�nt. 4.3 N�TERIAL REQUIRII��ITS: Hydrated lime to be used for soil stabilization shall meet requirements of Texas Highway Department Specification Item 264:'��Portland cem�nt to be used for soil stabilization shall meet recn�i rements of Texas Hi,.ghc�ay departrn�nt Specification Item 270. 4.4 CONSTRUCTION METfiODS: It is the intent of this specification to require the stabilizing material to be thoroughly and uniformly mixed with the subgrade material, with the proper moisture content, and that mixing be continued using proper equipment until the lir.�, or cement, is thoroughly mi�;ed and the soil is thoroughly pulverized so that no clods or chunks remain, Some fornn of pulverizing equi�nt will be required, such as those machines designed to work on a windaw and thoroughly pulverize the material. Mixed and wetted material shall be pulled out of the windaw in thin layers, bladed and rolled and thoroughly compacted until the finished grade is attained. In general, the m.i_xing, cc�action, ��inishing and curing shall �ly with Texas Highway Departr;�nt S�ecification Item 262 for lir.ie stabilization and Speci�ication Item 270 for Portland cement stabilization. EDID OF I�'II�I - 4-2 .... . ._ .,. , . . . . .. � _._,.. . . . . . . :._ .... . _ . _ . . ,. . _ ' . - - ,-, . _ . .. _... . .__.: _,_._..,� ...�. .;.�:.::�.:- IT�NI 5 - CONCRET� PAVING U5.1 GIIVF.�AL: The specification covers the c�nstruction of concrete paving. The typical section and the elevations for paving shall be as shavn on the plans. Subgrade treatment wi.u, },� depe�dent u�on the plasticity index of the native soil at suk�grade level. The typical section for each of these conditicns shall be shawn on the plans. ' 5.2 CII��VT: Cement shall be Z� I in accordance with ASTM 15Q and TFID Item 360. ; 5.3 ADMIX: None required. 5.4 COARSE A��RF�TE; Coarse aggregate shall conforra to TFID It�n 360 and the graciing from that specification is quoted as follaws: , , Retained on 1-3/4" sieve -- 0� ', , P,etained on 1-1/2" sieve ----- 0 - 5$ Retained on 3/4" sieve - - 30 - 65� Retained on 3/8" sieve --- -- 70 - 90� Retained on No. 4 sieve — 95 - 100g 5.5 FII�TE AGG�EC',t,TE: Fine aggregate shall co�ll ��1� '�'�ID Specification Item 360 and the grading frora that specification is quoted as follaos: Retained on 3/8" sieve �$ Reta�ned on No. 4 sieve -- - 0 - 5� Retained on No. 8 sieve ---- 0 - 20� Retained on No. 16 sieve - -- 15 - 30� Retained on P1o. 30 sieve — 35 - 75$ Retained on No. 50 sieve -- - ------ 70 - 90s Retained on No. 100 sieve -------- 90 - 100g Retained on No. 200 sieve ----- - 97 - 100s 5.6 wATER: ti�ater as used in cnncrete rux for this project shall generally cor�ly with the requirer�ents of potable water, arid fuz-t-her, shall ccrr�ly with T�-ID Specification Item 360. - 5.7 PROPORTIOP�ING OF CpNC�i�; Concrete mix for pavi.ng shall conform to TI� Specitication 364.2 "Class A Concrete". A part of the require�c+�n�s of tY�.e 'I'f-ID Specification is listed as follaws; Minin;i.un Sacks of CEment per C1i. Yd. 5 Minir.a.3n Co�ressive Strength at 2g Days 3,000 p,s.i. Max'i.rn.un taater Gement Ratio b.S gals, per sack S1� �ge 1 to 3 In. Minirrnu;t Flexural Strength at 7 Days 575 p.s.i. 5-1 :'4=d ._ ,*,:'Tt� C±, .:c .._a'., �. .:t-;,- � - - . . . . .,.. . . `,a . .. .. . .. . .. _ . _ . . 5.7.1 D1IX DESIQv: The Contractor shall prepare a mix design through a carranercial laboratory and report campressive and flexural test results to the �hgineer prior to the beginninq oi paving w�ork. Gradation tests of the aggregate used in the mi.x shall also be reported. Thi,s laboratory work shall be paid for by the Contractor. 5.7.2 GFN�RAL C'fiAI2P,CTERISTICS OF MIX: The w�rkability and other general characteristics of the mi�; shall confo� to the requirements of TfID Specification 360.4. 5•* REIN�'�RCING STCEL: Reinforcing steel shall be provided in the sizes and lengttLs as shown on the plans and shall be properly tied and supported at the positions in the slab as indicated. Reinforcing steel shall other wi.se confo�n to the TFID Specification Item 360.2. 5.9 PLACING AND RE�ZOVING FORI�'iS: The s�ubgrade under forms shall be accurately cut so that the form has firm support for its length. Forr�ina ar_d removal of forms for concrete pacing shall in general corr�ply - c�ith 'I'�� Specification Item 360.6, c�ith some of �he essential requirem�nts listed as follaws: l. On Site mixers are preferred and transit mix concrete wi1.I require a special pexmit frcm the Fhgineer, 2. Mixing and batching equipment is subject to the E�igineer's approval. _ 3• Mixing tune shall not be Iess than 50 seconds or more than 90 seconds after all ingredients are in the dr�n, 4. All concrete must be placed within 30 minutes from beginning of the mi.xing operation. . 5.11 PAVE��v-T SUBGRADE: Where subgrade is lime or cem�it stabilized, the finishing shall be to a tolerance of 4" before primer is applied. 6Jhere a sand cushion is provided for the ade a subgr , subgrade planner shall be provided for maunting on forms in accordance with TfD Sgecification Item 360.3. The forms shall be metal forms in accordance ��ith Tf-ID Specification Item 360.3. 5.13 CGNCR�t'� SPREC'1DER: A self-propelled concrete spreader and strike-ozf rnachine will be required in accordance with TI� Specification It�n 360.3. 5-2 'a � / �: �. _�. .:.. �:..... . . . . . .. � ...'� - ,.:.:.� . ... ..�..,� -_... .:- .":--- ., . �.�,:. -.� - -' �. ,.. �. , � . . ��.� ... .. .. �-�� --. ......:_� � .�� ... ��,�.�-, �.., .. . . . . . . . . ..,�.. . � .> ._ . •:�.�,,.. _...:. �r..-. -' . ':- �.+c.� .::. . � - 5.13 VIBRA'PORY EQUIPMII�Tr: Mechanical vibratory equigrent iri accordance , with TI� Specification Item 360,3 will be required and shall be opexated , ahead of the transfer finishing machine. Co�lete consolidation of concrete will be required. , 5.14 SPRE.ADING APdD FINISHING: Wherever possible the concrete paving ; shall be finished with a pawer-driven machine. hand finishing will be i permitteci at intersections and other places where machine finishing is , not feasible. Spreading, con�acting and finishing shall c�ly in general with Tf�ID Specification Item 360.8. ' S.15 OPTIONAL EQUIPN�IT: The Contractor, at his discretion, may use a "traveling form paver". All other reguiremP,nts are to be com�lied with. 5.16 FINISHING E7QUIPMEIVT: The finishing machine shall be designed to ride on the forms and to accurately finish the surface to the specified - � grades. In general, finishi.ng ecluiPmFxit shall confo�n to Tt� , Specification Item 360.3. ' � 5.17 CONSTRUCTION JOINTS: Stoppage of concrete placement shall be , either at an expansion joint or at a construction joint. Constsuction joints and weakened plane joints shall have c�ontinuous reinforcing steel through the joint and shall co�ly in general wi.th TfID Specification Item 360.6. ' S.18 EXPANSIOPd JOINTS: Joint assembly, inclucling dowels and presrolded filler, shali be as shawn on the plans. A removable strip shall be placed at the top of the premolded filler so that it can be removed and the sealer material installed. The joint sealer shall be "Hot Poured �bber" in accordance with 'I�ID Specification 360.2, Class 2. Before ' applying the sealer material, the joi.nt surfaces shall be clean and c1.ry, and free of curing co�rqx�uncl, oil or .any other material that would prevent the sealer frcen adt-,ering to the concrete surface. The premolded filler shall be PVC foam joint filler, such a "Rodofoam" as manufactured ', i by Electrovert, Inc. The grade of the material shall be semi-rigid. , j F�pansion joints shall otherwise conform to T�ID Specification item �' I� 360.7. _ I� 5.19 OTF-�ER JOINTS: Weakened plane joints {sawed joints) , contraction �oints, and longitudinal joints shall comply with the details shoran on the plans. In addition to the plan requirements, the construction of these joints shall comply with Tf-ID Specification Item 360.7. 5.20 PRCf�EC.'TION FROM TRP.FFIC: This Contractor shall place barricades and othenaise protect the slab to insure that no traffic gets on the slab until it has cured for at least 7 days. 5-3 . _r . _ . ..:: ,:��;. ..�::.,, . � _.- :.. ..�. ,:.._., ... .: a ,; � . ... . .Y _. 5.21 CURING: �diately after finishing operations have been ccxr�pleted, the concrete shall be cured wi,th either Water cu�.e or membrane curing co�ound. Water curing may be done with mats or other approved methods that would insure the concrete is kept wet for a min�innun of 72 hours. Curing c�Ound where used shall cc�ly wi.th TfID Specification Item 360.2. C1�ring of concrete, whether by water cure or curing cc�ound, shall co�ly with TFID Specification Item 360.10. 5.22 SUPERIr�OSID CURB: The superir�osed curb shall be constructed as sha,m on the plans. Joints in the curb shall match joints in the pav�nt. Concrete for the curb shall be proportioned Simila�. to .�t for the paving, with the e.�cception that a top size of 1" aggregate shall be used. The superii�osed curb is a small e.xposed section, and particular attention shall be given to proper curinq of this item. 5.23 GRADE AND AI,IG�1T: A the begi nnirig of this project, the E�gineer will provide tack pointed offset stakes at intervals of 100 ft. These stakes will be offset frcan the back of the outside curb a convenient distance to permit all operations without disturb.a.ng this staJce. Inforn�ation given on these stakes will be as follaws: 1. Station N�m�ber 2. Offset distance from back of curb 3. Elevation of hub will be given in tabular form separately It will be this Contractor' responsibility to maint�in these stakes and to use this information fore all other horizontal and vertical control requ�red. This contractor will be required tA furnish experienced personnel to do this work. The plans will shav top of curb elevation for the median curb and for the outside curbs. This Contractor will set all fozzns using this data, blue tops for fine grading sui�grade, and all other vertical and horizontal control required. 5.24 TESTING AND QUALITY CONTROL DUR.II�IG CO�TSTRUCTION: This Contractor shall furnish the following at his own cost and expense: 1. Ba.tch Plant Control frcm a qualified c�rcial laboratory. This person shall be competent to determine free moisture in aggregates and make needed adjustments in control of the mix and the sltmip. 2. Make four compression test cylinders each day, with two to be broken at 7 days and tw� to be broken at 28 days. 3. P�1ake two test beams of each day's paving operatior_ to be broken at 7 days. 4. Report test results to Contractor and City. This Contractor shall provide proper curir:g facilities for the test specir,�ns in accordance with the applicable ASTM Specifications. IIVD OF I'I'F1�I 5-4 ,. . . . _ . . . _. . >, ,: . . . . - . _.:.. . ._. .. . .. _ . _ ` - . . . . . . . . - ._. . . . . . . ... . . .. - _ �i�' . - � �� . !ti a�� _ ,.�1� _.. . .�.. .. . ..-. ... ._. � . .� -.._.:..z-.yr_�_. '.,.n'.n ��-r..'�:rJ'.::+FT � . . �..�n.�...�.-.::. .. ... .. .. .... . .�.T.' . .. . . �....:.... :... :.. . . .. . . ,.. . . . . ...i�.l . . ,. . . I`l�' i 6 - ASPF�LTIC CO�tCRLTE PAVII�1'.0 ', 6.1 GII�R11L: This item shall consist of a binder course, a levella.ng-up , , course, a surface course, or any c�ination of these courses as shaan 'I on the plans each to be co�osed of a co�acted mixture of mineral �, aggregate aiid asphaltic materials, and shall be constructed on the ', previously co�leted and approved subqrade, svb base course� base , I, course, all in accordance with these specifications and in confornity , '�� with the lines, grades, quantities and typical sections as shac,an on the ', '� plans and/or established in the field by the �gineer. ' I The materials and methods shall be a specified herein. ' 6.1 LABORATORY TESTS: In addition to the tests �,;red for subgrade, the Contractor snall provide for services of approved laboratory to perfozm tests for the asphaltic concrete. The laboratozy shall furnish, , , through the Contractor, a design mix and the laboratory sha:_- provide ', batch control for the hot-mix asphaltic ooncrete. The laborato�y shall , maJ:e two (2) density tests for each block of pavem�ent and one (1) , stability test for the project. Upon coi�letion of the work and before ', final acceptance and final payn�nt, pavement thiclmess tests shall be , made by core drilling at least two (2) locations per blocJ:. 6.2 1�;ATER7.�-'1LS, EQUIPRIII�'I' AND METfiODS: Materials, equiF[rn-nt and constzuction shall be in accordance with Texas Highway Depart�rent , Specification Item 340, except as may be herein modified. Coarse aggregate shall be limited to crushed limestone. 6.2.1 PRIt�iE CpAT: The asphaltic material for prime coat shall meet the requir�nents for c�t-back asphalt RC-2 or DIC-1, 1972, Texas Highway Department Standard Specifications Item 300 and It�n 312. The primer ccat shall be applied, as directed by the Ehgineer, with an approved sprayer at a rate not less than 0.30 gallons per squ��re yard of surface. All contact surfaces of gutters, manholes, valve l�oxes, i structures, etc. shall be gainted as required and directed by the , E�gineer. ' Prime coat shall not be applied when the air ter.�erature is bela� 60° F. and falling but it may be applied when the air ten�rature is above 50° F, and is rising. Asphaltic materiai shail not be placed when general weather conditions, in the opinion of the F�gineer, are not suitable. 6.2.2 TACh COAT: The asphaltic material for tack coat shall meet the reauirei;�ents for cut-back asphalt RC-2 or P-:C-2, ASTri D-597-46, and 6-1 � r •:.:s,:.. ::;,, .': . . . , . : _ . . . . . . ... . .. . . .... . ........ .. . ..-. ....�.... ,,.. ....�. ....:t...,Jr_.-..�..�:. _. D-598-46. Eefore the asphaltic mi.xture is laid, the surface upon which the tack coat is to be placed shall be cleaned thoroughly to the satisfaction of the City Engineer. The surface shall be given a uniform application of tack coat applied, as directed by the glqineer� �,aith an approved sprayer at a rate not t�o exceed 0.10 gallon per square yard of surface. tiv'here the mi.xture will adhere to the surfac� on whi.ch it is to be placed without the use of a tack coat, the tack coat may be eliminated if approved by the City �hgineer. A11 contact surfaces of curbs and structures and all joints shall be painted with a thin uniform coast of the asphaltic material for tack ooat. The tack coat shall be rolled with a pne�tic tire roller when directed by the City �gineer. � 6.2.3 HOT-MIX ASPHALT: The hot-mix asphaltic ooncrete shall comply cuith the requisem�nts of 1972 Texas Highway Departr;�nt Specifications, Item 340, (Class "A") , wi�h coarse acrgregate limi.ted to crushed liir�estone. After the prine coat has been absorbed by the subgrade, it shall be surfaced with hot mi.Y asphaltic concrete of the mini.r.nn;� thiclmesses for the various types of streets as follows: TYPE STRF.�r ASPHALT THIQ4v'ESS NO. & DE�Z�-i LAYERS Resiclential 5" �vo - 3�" and 1;" Secondaxy 6 Z�� Three - 3", 2�� & ].�'� P�9aj or & Industrial 7" Three - 3", 2�",& 12" The paving mi.Ytures shall be for a Coarse Graded Base Course and for a Coarse Graded Surface Course, with a laboratory density bett��een 94 and 98 percent and laboratoiy stability of not less than 45 nor more than 55. The Contractor will be required, at his expense, to iurnish continuous plant control of the hot-r.� asphaltic concrete ni�-ture by securing the services of an independent testing laboratory approved by the City, as per Item 6.1. 6.3 PEN�1L'i'Y FOR DEFICIIIVT THICF�JESS: When the average thiclmess is consistently less than the ticlmess specified (Cores to be tal:en as directed by the City Ehgineer) , the City shall requise ar� overlay for the full widtr. of pavement between gutter of required thiclmess, but in no case less than one-half i.nch (2") , at the contractor's expense, or the City shall have the option of assessing a penalty against tl:e Contractor or the De��eloper which shall be paid to.the City on the following basis: P�hen the average thickr.ess of the hot-mix surface in a block or any area of t�oenty ('l0) square yards or more within the block, is consistently less than th� thic.�cness specified, but not more than one-half ir.ch (2") deficient, the unit price of the deficient areas shall be reduced by a per:alty per square yard that �aill be co�uted as follows: 6-2 % +�l :�?' „ _ , '� J .. ^L -1`. ,.! ..., ? ' t Y-, . ;s; � .._. �, .. . ,., • � _.. .• . . . . ::'. �-.+:, ' . . .. . . .. � . . , . . .�"�. - . . . .. ... . . . .. . . .,. _ . . . ._ . . .��. . . Penalty = 3 X Average Deficiency X Una.t Price Specified Thiclmess For assess�nt of penalty, the City shall be furnished a �ertiiied oopy of the Contractor's Proposal to the Developer Shc�wing � �t Price for the hot-m.i.x svrfacing, or the City may dete�mine t�.,e unit price from average unit prices prevailing in the vicinity, IIVD OF ITII+�i 6-3 ,� i� , . ..,,. - ;:. ; , ,__ .. _.:. ,.._ . ... _ . _; : ::. �:; , _.. : � •..��* ... _=' ti . .^; ; .r,e: ti Y- ?'� ,. - . _ ,-; _ _ _ _ ..�.. ITII�� 7 - STORM DRAII�IS 7.1 GIIVII2�L: The City Ehgineer shall ha.ve the right to limit the am�unt of trench that shall be opened or partially opened at any time in advance of the installation and also the amount of the trench r.ot backfilled. 7.2 CLASSIFICATION: Without regard to materials encountered, all trench excavation shall be unclassified and shall be designated as "Unclassified Trench F.��cavation". It is to be distinctly understood that any reference to rock or any other material on the plans or in the specifications is solely for the Owner's and Ccntractor's information and is not to be takeri as an indi.catian of classification. 7.3 SHORING AND SI�ATHIPIG: Whenever necessary the sides of the trench shall be braced atid rendered secure, and either open or closed sheathing used, as directed by the Ehgineer. Sheathing and bracing shall re.m�.�i.n in place until the trenches are backfilled. Such sheathing and bracing shall be dcne at the Contractor's expense, unless left pez�,-inently in . place by order of the �gineer, �n which case such sheath.ing and bracing, and only such, will be �aid for as an extra, unless othezwise provided for. When left in trenches, sheathing shall be cut off one foot (1') belc,w the surface of natural ground or street subgrade. 7.4 INTERr'ERII�TC� WITH EXISTIlVG ST�tUCI'[JRF',S: In excavating and backfillir.g trenches, special care naist be taken not to rer,�ve or injure any existing gas, water, sewer, or other pipes, conduits or structures without eYplicit instructions by the Engineer. If necessa�y, the Contractor shall, at his cwn expense, sling, shore up and/or ott:en•�ise secure and maint�in a continuous flaw in said stsuctures or conduits and shall repair any and all damages dor.e to them. F�hern�re, the Contractor shall maintain the said.structures or oonduits in good repair until acceptance of the completed cvork and shall leave ther.l in as good cond.ition as when encountered. Should it be necessary to relocate utility lines that lie within the storm drain section, the respective utility awning the line or lines will relocate the said line or lines at no cost to the Contractor. The Contractor shall notify tl;e utility concerned a sufficient am�unt of tiir� in advar.ce and provide suitable access to the k�rk so that a minir.:�.un of interference and inconvenience to all parties concerned is affected. 7-1 • • . . . . __ . .- - _ . - . . -. .._ -.:�.. . . . All fire hydrants shall be left uncavered and accessi.ble. TY�.e , Contractor shall, at his awn expense, pr�ovide for all water caurses gutters �-uzd cirains interrupted by the w�rk and shall replace those � ', locatecl outside the limits of the existing or proposeci pavement in as , g�od condition as he found them. 7.5 TRE[�ICH EXCAVATIGAT: The excavated trench must be wi�.e enough for sat�.sfactory joint cx�rk and backfilling. In case a fizm foundation is not encountered at the grade established by the �gineer, the City �gineer may direct the Contsactor to remove the unstable material to a dept.h which will produce a uniform and stzble � foundation when bacxfilled with gravel. The grade shall be refilled to a proper elevation with gravel of a quality satisfactozy to the City �gineer, and tF:oroughlY c�acted. ', When rock is encountered in trer.ch excavation, the trench �?-�� excavated to a miniirnun depth of six inches (6") , belcw the N��t�n of the pipe, refilled with sand or gravel of a quality satisfactor� to the City E.hgineer, and thorc�ughly co�acted tA fo�n a uniform bedding for the , PiPe- Should the trenches be excavated belaw the grade shown on the Plans, or established by the Engineer, they shall be refilled to the prcper grade with gravel of a quality satisfactory to t,tie Ehqineer, and �horougnly , corr�acted. , 7.6 FRF.CAST CONCRETE PIpE; Precast concrete pipe shall be manufactured in accordance with AS�I Specification C-76-64T, Table III with ��7a11 "A" thickness and circular reinforcerc�nt. ' A Certificute of Test fran an apprc�ved independent testing laboratory shall be furnished for all concrete pipe, and the laboratory's sta�r.� of apprcval shall be placed on each joint of pipe to be used in ttie work. ', ' The cost of the laboratory testing and st��mpinq will be paid for by the Contractor and will be considered as subsidiary r,,rork pert��g � �e � various items ot the contract. ' �hop made specials shall be used for the connection of all intersecting pipes where the main line is 30" in diameter or smaller and mar�zole is net to be constn:cted. The angle of intersection of the specials shall be 60 degrees. 7-2 _ -. _., . .._ , .., _ , _ ;�-. :;.. ,. . - - • _ ., � , .. t - - - .. _ . ........ .,�::...y....r:,�.a��►i� .-. ..r......��. ....:� .: - . � . _. .... . ._.. _. . . . 7.7 CAUSE FOR RFJECrION: In addition to the r�+�i,-Pr�,�,1ts listed under the ASTP�7 Specifications, the pipe will be svbject to inspection at all times prior to placing. 'i'ne pipe will be subject to rejection if it iai�s to con�ly with the ASTt�i Specifications or because of any of the followi.ng: 1. Where pezr.tissible variations are �ceeded. 2. Failure to give a clear ringing sound when placed on end and tapped with a light hammer. 3. E�cposed or misplacemexit af reinforcennnt. 4. Incomplete or in�roper mixing of the concrete. 5. Unauthorized patchi.ng. 6. Cracks sufficient to impair the strength, durability or - serviceability of the pipe. . 7. Porous spots on ei.ther the inside or outside of the pipe. 8. Insecure attachment of spurs or brar,ches. 7.8 INSTALLIPdG PIPE: Prior to being placed in the trench, each sectior. of pipe shall be carefully inspected. Sections o� pipe not meeting the requireirents shall be permanently removed from the work wi�u.n ten (10) hours after rejection. All l�s or excrescences on the ends of the pipe sections shall be rel*ioved before being placed in the trench. No pipe shall be placed except in the presence of the City Engineer's representat��e and the representative may order the r�val and relaying of pipe r.ot so placed. Pipes having minor defects (defects of a nature not sufficientl.y serious to cause their rejection) shall be placed so as to bring such defects to the top half of the pipe when installed. Nbrtar for the joint shall be of one pa.rt Portland C�nt and two parts brick sand by voltune, with hydrated lime added in the amount of ten percent (10 0) of ceir�nt by vol�nne. The ca�leted joints shall be - protected frcm drying cut by Hunt's Process or equal m�mbrane curing com.pound. "Ram-Nek" type joints na� be used with the City's approval. 7-3 ,. . , ._ .. .. , .. , . . _ . . . _ ._ . . _ . , _ . _ _.:. . _._ : . . , . _... ....... ,. ...�.:. .,.:��:... . .. _. __ ,„�M.�.,,,,�r,. ..._- - � Before laying the interior of the socket shall be carefully wipe� ��.� and clean, and the annular spa� shall be kept free fran dirt, stones or water. During laying, the ends of the pipe shall be clean�d and m�istened i�ediately before laying so that when the mort�r is placed against the tongue and groove, the pipe shall not absorb m�isture frcxn the r,z�rt�r. No free surface water shall be on the pipe when m�� is placed. The contractor shall remove all water from the excavation by p�utg�ing, bailing or draining, as all trenches and other excavated arear r�st be • free fr� water when pipe is laid, and/or concrete is placed. Al1 pipe shall be laid carefully, socket upqz-acle� spigot end fu11y extended into the adjacent socket and true to line and grade given. Each section shall have a full firm bearinq throughout its ��gt�, A11 joints shall be tightly fitted tcgether and ccm�letely filled with mortar composed of one part cem�ent and tw� parts sand. The m�r��x. shall - be placed so as to fozm a durable watertight joint. After an�r section of pipe is laid and before any succeeding section is placed, the lawer portion of the socket of the pipe in place and the upper portion of the spigot of the succeeding section shall be plastered thoroughly with mortar to such a depth a,nd in such a m.anr-1er as to bring the i nn� surfaces of the abutting pipes flush and even when in place:_ After the succeeding section is laid, the remairider of the joint shall be co�letelyfilled with rmrtar (inside and outside the pipe) and sufficient additional mortar shall be used to form a bead arour.d the outside of the joint. The inside of the joint sr.�.11 then be wi�d and finished smooth, The inside of small diameter pipe shall be wiped clean with a wad r.�ade of a sack filled with hay and large enough to tightly fill the pipe. The wad shall be attached to a rod or cord; shall at all times be kept in the pipe and shall be pulled ahead past each joint as soon as the joint is finished. Completed joints shall be iirm�ediately aovered with burlap and kept wet until backfill is placed. 7.9 PIPE BIDDING AND BACF�II�I,: All Fit-run sand bedding and backfill shall meet the follawin rey �avel used for pipe shall be ins�cLed by City representative ahead of bac�kfiilir�g.l pi�e 7-4 � ..,; ,:,. ,.., :.-.. �., ,,.�, <:...,, . - _ , , -. a -. �•..� ,, •. �: .'. Plasticity Index = 5 max.urnun Cradation: Screen Size � Retained Sieve Size � Retained 2" Oo �4 40- 80� 1" 0-100 #100 95-100g �Z" 20-50% Trench backfill shall be classified as "Within the £�ight-Of�7ay of Public Streets". 7.10 TRF�IC�i BAQ�'ILL WITHIN THE RIQ�T'-0E-WAY OF PUB.LIC STRF�TS: (1) Pit-run sandy gravel, of a c�uality satisfactoxy to th� �gir.eer, shall be placed at the bottam of the trench preceding the placing of the concrete pipe. This gravel shall be placed such that it will be siightly above tr�e underside of the pipe after cc�action, and to a depth between 3 and 6 inches under t�:e concrete pipe. After the campac+-,..ion the gravel shall be fine graded. The thiclmess of the gravel placed under the pipe shall be reasonably uniform, and shall be compacted by tamping, and with the addition of water where necessary. - (2) After concrete pipe has been laid, the joints riade, pit-run sandy gravel as above specified shall be placed under t1:e haunches of the pipe, on the sides of the pipe, and to a height above the pipe such that the gravel will be at least 12 inches above the top of the pipe after the gravel has been settled. The gravel sha11 be placed equally on both siaes of the pipe in order that the pipe will not be displaced, and if necessary, the pipe shall be blccked against the sides o� the trench to insl:re that no displac�nt occurs. The gravel placed under the haunches of the pipe sha11 be worked into place by hand during the time it is deposited in the tre.*�ch. After the gravel has been placed adjacent to and over the pipe, then this gravel shall be co�acted by jetting wi:'z water, with a 1-inch pipe of sufficient length to reach tr.e bottom of the pipe, on a hose of sufficier.t size to furr.ish the large quantity of water necessary and of an adequate size to provide the required pressure regardless of the d.ist�*�ce from the soul-ce of the water. 7-5 ;. %� � . -. ,' . . .. . .- � . .'t.- -,4:� . _ . . '� . 'Q'��:C'a�.. s ZT�,�+a� t .r:; .:i::�+��. . . . . .. . . . . . ,�- . . . � . .. .... � , � . ._ _ ..�.. . (3) The remainder of the trench shall be backfilled in such a manner (jetting, mechanical tanpinJ, rolling, etc.) as to obtain in all cases a density not less than 95 percent of the Standard Proctor Density. After sufficient time has elapsed for the free mr�isture to be gone fr�n the pit-run sai:d�� gravel placed as outlined abave, the remainder of the trench sr.all be backfilled with matez-ial excavated fran the trenc;ll, exceot that no rocks larger than 2" shall be used in tt,.e bac}cfill, and material from rock or shale excavations shall not be used. At locations where the excavated materi.al, is fran rock cr shale formations, or where the material is such that is not suitable for compaction b�, the �� }��g u�, �� material shall be disposed of otherwise and acceptabie substitute backfill material shall be pravided and plac�d as required. If jetting is selected as the method com�ac'-�.ion, the procedure autlined below is the minimtun accepta'ple: The backfill shall be placed in layers not exc��i,�q 4 feet in thiclmess loose, and each layer s}�a11 �e thoroughly jetted with water after the earth backfill has dried out reasonably well; then the entire backfill, including the pit-run qravel, shall be jetted a fir.?1 time. Jetting operations shall be done with a pipe of suf�icient length to reach the bottc�n of the storm crain PiPe. With adequate hose and sufficient pressure t.o �o the work thoroughly and properly; the jetting pi�e �'�all be applied so that the top of the backfill is settlec first and then shall proceed further into the mater_al until the bottom of the pipe is reached. The jetti_g PiPe shall be used on both sides of the storm drair. pipe and at intervals of not more th�azz 5 feet along eaci: side. If inechanical tan�inq is selected as the method of co,*�xction, the procedure outsane� �1� is the minimi,un acceptable: The backfill material shall be placed in layers rot exceeding 6" loose thicJazess. The moisture content cf the material being tamped sha11 be unifo�_and near the oPtu�n moisture content for the material. In case tt-�e material being placed does not have the proper mois�u.re, then the i:�aterial shall be dried out or additional moisture shall be added by satisfactozy r.�ethods 7-6 �;} such that the additional water is distributed unifonnl.y throughout the material being placed, The layers of backfill shall be reduced in thiclmess when satisfactory compaction cannot be obtained with the equipn�ent being used. If rolling is selected as the method of ca�action, the procedure outlined below is the miniirn� acceptable: Rolling equipment shall not be placed in the trench until at least 24 inches of materials has be�n placed over the top of the stozm drain pipe, at least 18 inehes of which shal.l confo�m with these backfill specifications as related to the r,un'1mmi Proctor Density. The backfill material shall be placed in layers not exceeding 8 inches loose thic}mess. The mQisture content in the material being rollc�' shall be uniform and near the optinn�n moisture content for the material. In case the material beir.g placed dces not have the proper moisture, then the material shall be dried out or additicnal mr�isture sh�11 be added by satisfactory methods such that the additional water is distributed uniformly throughout the materiai being placed. The layers of backfill shall be reduced in thickr,ess when satisfactozy co�action cannot be obtained wi�.h the equipment being used. -- (4) In the case where '-�.Y��e storm drain is located underneath existing or prcposed pavement, the entire trench excavation shall be backfilled with pit-run sandy gravel or field sand. The pit-run sanuy gravel or field sand may be placed in loose layers not e�ceeding 4 feet in thickness and shall be jetted as outlined above. . (5) The Contractor will make the necessary laboratory tests at his expense to determine the density obtained, The Contractor shall schedule his operations and shall use such methods and construction egerations so that representative tes�s of campaction can be obtained. _ 7.1I CCPICRETE BOX C[,TLVEFZT, I�.Ai�TfIOLES AND IIVLEI'S: 7.11.1 DESCRIPTION: The worY as herein prescribed shall consist of t1�e fu��iishing of all materials and construction in accordance with the -- detailecl drawings, for the boY culvert, m-�nholes, and inlets as shc�m on the plans or established by the �gineer, including excavation and backfill, concrete, reinforcing steel, castings, fittings, and storri drain cornections, ce�lete in place. 7-7 _ �. .. .: .. _ , ...: - . �; „ . _.: . ,. .. . , � , - > , .,...�1� _...... ......�_... .... . . _ . 7.11.2 I�TERIr�LS: ps11 materials shall can�ly wi.th It�n 3 - Concrete and Feinzorcing Steel (Stnictures) , 7.11.3 CONSTRUCTION: Al1 construction of culvert mariholes and inlets shall comply with Item 3 - Concrete and Reinforcing Steel (Structures) . Backfilling for box culvert and winq walls sha11 consist of pit-run sandy gravel for a distance of approximately tw�o feet (2') in back of walls and suitable excavated materials for the rer,aind� of the backfill ccrr�pacted by hand or jetting to not less than 9po Standard proc.�r Density. The ccn�action shall not be acc�].�.shed until the concrete has attained 28 day strenqth, Inlets and manholes within the propo,ed paVe�►ent width shall be backfilled with pit-run sandy gravel as specified under storm drains, F.TiD OF ITI�i 7-8 .r ITII�i 8 - STF�ET NAt4E SIQVS 8.1 DESCRIPTION: Street name signs shall be installed at locatio.*is shct,Tn on the plans and in accordance with the s�pecification rc�+,;--es�nts contained herein. A street narre sign shall be provided for each individual street at the location specified. Where two or more n.�me signs are required at the satr� location a ca�t�on street post r�ay be llS2C�. 8.2 STREET N11ME SIGNS: Street name signs shall be made of al�i.ntnn havu:g a miniurnun thiclmess of 0.072 inch. The signs shall be 6 inches in height and 18 inches, 24 inches, 30 inches or 36 inches in ler.gth � depending upon the rnunber of letters in the street narne. The follaaing info�mation shall be set forth on the sign: Direction of STreet Name of Street 2� of STreet (Street, Boulevard, Avenue, etc.) Block Address Ntur�r , Street signs shall have r,�dium green background with white letters and approved by the street superintendent. Locations shall be as speci�ied by the street superintendent. 8.3 STREET POST AND CAP: The street post shall consist of a- post and cap. The post shall be 2-3/8 inches in diameter and have a mini�an wall thickness of 0.072 inch thiclazess and shall be of galvanized tubi.g. The post shall have a miniirnIIn of 10' , 0". The post shall be installed in a bored hole having a mininnnn diameter of 18 inches and a mini�-a�n depth of 22 feet. The post shall be embedded in 2500 psi concrete in the bored hole. The street post cap shall consist of a cap 2� inches in d.iarneter ar:d shall be made of aliuninuri having a miniirnnn thicJmess of 0.072 inc::es. The cap shall have a slot 4 inches in length, 1-1/16 inches in heignt and shall be furnished with two self locki.ng bolts. II.4 STREE�r SIQ�t BRA�CEi: The street sign bracket shall be of a1L.-�.in� having slots 4 inches in length, 1-1/16 inches in height and shal'_ have 4 self lockir_g bolts. - EIdD OF ITII�I 8-1 /.�' / ' M '�:a. t . ` .. . _ ' •' �' � •` . , '.�. ._T .�� .� . � ♦ .v� �t J �l \Y :.:.f" .. 5:;�� .L_+yx .. . .. ..._ � M1 . . . ..... :. . �. •-�r..: : �.<i'• �;'r� ).• ' �.: .. �: .. . . . . . .�.....1 .... .. . ... �.�:.. . .a,. .�.....� ..�� : � -� T ITFi'�4 9 - CITY STANDARDS 9•1 G��I,: At intezvals, the City Elzgineer's office will havz dracoir.gs shawing Construction Standards that are to apply for cet.�ls of curb and gutters, drainage structures, street details, etc. Construction shall confors.i to the Construction Standards, as apalicable, unless written approval is granted by the City IIzgineer for variat=ons. 9•2 AVAILABILITY OF STANDARDS: Planners may obtain copies of Cit_� design standards at sai?� costs that reproduction firms use at that particular time. Copies of City Standards may be di.rect prints or reproducible copies on sheets 22" x 36" sizes. Ei� OF ITII�! 9-1 . � , �vf'PI '- � .� .�.I ,. � i �.�.�.�� i�� - „j 'W ` � �I- •! -- �--�_ � ..._._ , ��6 y�-�t�--*�r,-�--�--�----- ,,, j;� i ti f � �. � F��..� � 'ti ' . 1��' . �� J , I � � � . 1 I•�•' b r� � � 1�'_`�'�......�"'_~ «-�'�^,^ FQ- � (2_�� Ii `r '] p� � ��F:. f�b- ry4 4. r� 6e 9' .1 y'.a..r„ti .� 1�,1 � . i I �_ �. � 0.Q�.'�'t.�..r.... .�'r�.rf� �.�. � r O � 14i� . � i S p�� ,-r�,�, _ ''�-,�� f-!.� ._._,-...-•% f w ►- I '�'_'� � . � �••��'.�..�.�..r.�� .-��..�.�.+-�_.-�.. ' �, : IC2'.: . ... . .- , i��a� � � ��.�.,«._._�." 4 +y J i i�,. a i--++-.-�-:-.-.-.-.�-�-..-.�..r..� _ i �l 2 �p'�+- � ` j�� ... .�i. ! '�_��.,M.-'- � j" ��, � . � . � ,'�~' l°� i � , i � . i It,>, _ . s � � �._�� .',_ . _ . - g J"_:a r . �� . � . . � }�r-�- � Ff Q . . . � • � � il a '� i� �.�� JI � � t� I :� � �I . � :.0� , � V ,, I �� '� Ii.0 .r� , * ' . . 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A �o t- - -- — � s � m t x "' s f < r�i n~i � y D - - rn r . . n r _ If N -, m + o ^� .� � ,� �p z _o c - IA �- , � D ' � T. j , � D I D a� u m = � � o O s O � � ? C 9 9 1 r' � � 9 y tl � � � �1 r p �i D xm-mu �mw� o � o D o m s i m�'"'rfn -Zi m c e� i^ ; '� c Z � � m x� {�n m o 1�1 r�O t p a >_o : a .oz ��^ � <o;�o m=aei ' � . r * 6� v Oo; m>-� ;i . p mmcm; o�ny , m � �K�y�S '� O In t A�Z C A . '� _` =m 2 D O a� �. t/ > SO�O E��w rl�l K�m'i ��. C r m�N 2 K=m9 K2�=J� � O m H~y-1 N�Iq �1 T-i O� � ,, K �m r A. < 0�Oy�� , � p x - mao Co�am � �. y� >�f � s m' �z � . _ �K-�� a 2 i '�t� m�n z o ... �m=�'y ou� am �mr� r`°- �,. � o s� ..� o c� _ o � � �r�i Z= �9vm�' n r m m m o m ' O m 1�1 N D � . . . - . . . ,�_ . .. ... ... . . . ... ..� . . i�...K.. . ... —�. �� . �y� . -. � :� �....:�. .:_-..-.. .-: '.��- '. �.,� .: � � - .. , _.-..,. �_..- '�, . . .. .. . ,- . , -.� ... � - _. . - ' ��, r.y . r _ . .. - _ , - , ..� _ .,.. ..- ;... ,.. . . , . .;..� . - . _ _ . - � -- .... ..,...�_._ , . . . . _ . _. CITY OF GRAPEVINE, TEXAS STANDARD SPECIFICATIONS FOR CONSTRUCTION ti9ATER DISTRIBUTION SYSTE�I T*� � L7LVL SP�IITARY SEWER SYSTEM PASSED AND APPROVID BY Tf-iE _ CITY COUNCIL OF THE CITY OF GRAPEVINE, TEX1�S NOVII�IBER, 1982 � . .. . �::..:'.:ci:.iYfis�.r.�'.. �_... ..... . TABLE OF �NTII�7TS ITEM NO. DFSCRIPTION PAGE Item 1 Gerieral Requir�ents 1-1 Item 2 E�cavation, Backfill and Pipe �chnent 2-1 Itesn 3 Concrete and Reinforcing Steel 3-1 Item 4 Cast Iron Pipe and Fittings 4-1 _ It�n 5 Installing Cast Iron Pipe and Fittings 5-1 �'�� Item 6 Concrete Pressure Pipe 6-1 Item 7 Installing C.oncrete C�Linder Pipe 7-1 Item 8 Asbestos-Cement Pipe and Fittings 8-1 Item 9 Valves and Valve Installation 9-1 Item 10 Fire Hydrants 10-1 Itesn 11 P�iC Pipe Sewers - 11-1 Iten 12 Vitrified Clay Pipe �wers � 12-1 Item 13 Manholes and Cleanouts 13-1 Item 14 F�filtration Tests 14-1 Item 15 E�mbechnent MaLerial 15-1 Item 16 PVC Pipe for Water Lines 16-1 Item 17 Thrust Blocking and other Minor Uses of - 17-1 . 1500 PSI Concrete - Ite�n 18 Sterilization and Testing of Water Lines 18-1 Item 19 House Service Connections 19-1 �tem 20 Street C�ts & Bores 20-1 . <<== . ' _ _ , . �_- � _. , . . . _ ;: �,, . . -�. . . . .. . , . .- '1 1 �n.'� %-ti. �.a�- '^`4 J - �'.R'`YY G . . . . � . . -. . . L��:.. �, r:.. A -r.'" �_ '^s� �+_y :.�.. . . . . . . . ..... . . . _ . ..�.. . _ . ..._ .... ,�A'. � �.. � � . DETAIL SPECIFICATIONS ITFM 1 - GII�AL R�UIRII��[V'I'S 1.1 MATERIAI,S: These specifications are intended to be so written that only materials of the best quality and grade will be furnished. The fact that the specifications may fail to be sufficiently c��lete in some detail will not relieve the Contractor of full responsibility for providing materials of high quality and protecting th�n adequat�ly until incozporation in the project. '�e specifications for materials set out the minin�n standard of quality which the City of Grapevine believes necessary to procure a satisfactozy project. No substitutions will be ' necessary tA proclire a satisfactory project. No substitutions will be perr,titted until the Contractor has received written perr,tission of the City to make a substituticn for the material which has been specified. Where the term "Or 1lpprovecl Fqual" is used, it is understood that if a material, product or piece of equiprr�nt of the specified nai� and quality is furnished it will be approvable, as the particular trade name and quality was used for the puzpose of establishing a standard of quality acceptabl� to the City. If a product of any other name is proposed for use, the E�g�neer's approval thereof must be obtained before the proposed substitute is procured by the Contractor. Wherever the term "Or Fqual" is used, it is understood to n�an "Or Approved �al". __ Where the terms "Or Approved Equal" or "Or Equal" are not used, the contractor shall furnish the material as specified and no substitutions will be allowed. Where the tern "Owner" appears herein, it shall be assurned to be th� City of Grapevine, Texas. 1•2 �r�ORHI'•9ANSHIP: These specifications contain detail instzuctions and descriptions covering the major items of construction and w�orJ�zship necessary for builcLing ar_d co�leting the various units or eler�.nts of the project. The specifications are intended to be so written that o�ly first class worlananship and finish of the best grade and quality will result. The fact that these specifications may fail to be so corrg�lete as to cover all details will not relieve the Contractor of full responsibility for providing a ccm�leted project of high quality, first class finish and appearance, and satisfactory for operation, all within the apparent intent of the plans and specifications. 1.3 HANDLING MA7.�RIALS N� APPROVID: The Contractor shall rErrnve from „ the site any materials found to be damaged, and any materials not meeting the specifications. These materials shall be removed prc�-�tly, unless the Fhgineer will accept the materials after repairing. I�laterials found to be damaged, or not acceptable to the �gineer, shall be removed if installed and then found to be dar�aged or not acceptable. Inspection before installation shall not relieve the Contractor from any responsibility to f-urnish gocr? quality materials. 1-1 � 1.4 CZEARING AND GRUBBING: The Contractor shall do all clearing and grubbing necessary for construction operations. All trees, branches, limbs, and roots shall be removed and disposed of }�, the Con.tr.actor so as to leave the rightrof-way in a neat and presentable condition. Clearing and grubbing shall be done so as not to irijure or damage adjacent property. In c�isposiriq of brush, nar+;�� e �11 be taken so as to eliminate the possibility of startinq a grass fise. Any and all damages outside the limits of the conStruct�,� right-of-way shall be paid for and settled by the Contractor at hi.s expense. ' 1.5 SAFEI'Y AND PROPF}RTY-PROTE7CTION: ' 1.5.1 TRA��'IC CGNTROL IN WC?RI� AREAS, BARRICADFS, GCIARDS A1VD SAFEI'Y PROVISIONS: Zb protect persons fr�n injury and to avoid property damage, adequate ba.rricades, construction signs, guards, and other traffic controls as required shall be p].aced along all roads, street crossings, etc. , and shall be maintained durinq � Pr�.es� of the construction work and until it is safe for traffic to use the construction site. The contractor shall cca�ly,�ai.th the r�„ir�n� of ' the 1973 "Texas Manual on Unifonn Traffic Control Devices". A copy of ' the P9anual many be exanuned at the City Fiall. , E�ccavations for construction operations shall be conducted in a manner to cause the least internzpt.ion of traffic. Where traffic must cross open trenches, the Contractor shall provide suitable bridges- at road _ crossings, street intersections and driveways. _ 1.S.2 FI,CW OF DRAINS AND SEWER,g p,��ID: ��te provisicns shall be made for the flaw o� stonn sewers, drains and water courses encountered during the construction and the stnzctures which may have been disturbed shall be satisfactorily restored upon co�letion of the work. 1.5.3 PROPEl�l'Y pR0`I'ECI'Ip1�J; TreeS� fences, signs, poles, guy wires, and all other property sha11 }�e protected unless their r�moval is • I ', authorized; and any property damage shall be satisfactorily restored by ' the Contractor. ' ', The Contractor shall make adequate provision for the protection of Perr.�zent paving, both concrete and asphalt, frcan damaqe by construction equipment. 1.6 GL'�-TEE: The Contractor shall guarantee the �eork for a period of one (1) year after date of acceptance by the City. During this period, ` the Contractor shall make any repairs and/or replacements of defective materials and corrections due to poor wor}ananship, all as may be required for full corr�liance cuith these Specifications. This guarantee shall apply to all matters reported by the City in writing within said one (1) year period and this guarantee shall be covered by the rlaintenance Bond. 1-2 .: ,:�, . .. .,. . : .. ,:. ,... , .. , ,. �� . - . . , .. _ _ , . , . . . ., . „:, _, :,.;�. T;:� .r ,• ^' �.: , _ _ ,� � _<+..,.,,,,�..�.dr_ �._._ _,_ _.._..-. . . __ ... . - 1.7 6�TER FOR CCNSTRUCTION; The Contractor shall furnish aIl water required for construction. The Contractor may pairchase wat�r from the City at published water rates. All connections to the City's water system shall meet the approval of the City. The Contractor shall post a deposit with the City to use a City construction meter. 1.8 DISPOSAL OF EXC�SS MATERIAI,; The Contractor shall dispose of all excess material at his expense. 1.9 MAINT�NANCE AND GLEANUp: Du�'inq the prosecution of the wnrk, the Contractor shall maintain the project site in an orderly and accep�table manner. Upon ccx�letion of any unit of work, it shall be maintained by the Contractor until acceptance by the City of the entise work covered by this Contract. Upon co�letion, as a whole of the project, the Contractor shall clean and remove fran the site of the project surplus and discarded materials, teir�orary structures, and debris of every kind; and shall leave the site of the work in a neat and orderly condition. 1.10 SANITARY SEWER LINES DIEAR WATER LIrIES: In such cases where water lines either cross or otheYwise corie within nine feet of a sanitary sewer line, then a special construction method shall be applied to the sewer pipe so that the sewer pipe will be a pressure pipe at all locations where the water pipe and sec;ier pipe are less than 9 feet . apart. The sewer pipe in such cases may be either cast iron or -PVC, C-900, with a mi.n'urnan working pressure class of 150 psi. l.ll I�OC�ITIODIS OF 6+�1TER AND SEVlII2 MAINS: In general water and sewer mains shall be placed within street rights-of-way. Ipcal conditions may require variations fran locations in streets, especially for sewer mains and/or laterals. In general water mains shall be located with the center-line 3� feet back of curbs on the north side of east-west streets and on the east side of north-south streets. Sewer mains and laterals parallel to water mains shall be placed in streets half-way between , street center-line and back of curb opposite the water mains. Variations fran these locations shall have t��ritten approval of City Engineer. _ l.11 PF�MIT FOR CONSTRUCTION: A permit issued by the Public 47orks Departrnent shall be secured by the Contractor prior to start of ccnstruction. IIVD OF ITEf�I 1-3 � ��. .. . ._ _._ . . . ._,:_ . . ,..: , ... . _ _ - . ; .... -:.: .., r...,�; IT��I 2 EXCAVATION, S1�Cf�'IIS, ANp PIpE II�iBE�i�3,1T 2-1 TRII�7CH w�7l�i: The maxim�a allawable trench width in the pipe zone shall be O.D, of the pipe plus 24 inches, and the minim�un allow�ble tr�nch width in the pipe zone shall be O.D. of the pipe plus 12 inches. The trench walls shall be substantially vertical. �.,n th,e pi�e zone. The pipe zone shall be considered as the vertical distance fra:1 the k�ottor.i of the trench to an elevation one ft. above the top of pipe when the pipe is at the specified grade. _ Trench widths above pipe zones shall be kept within reasonable and safe `• widths. The Contractor shall be responsible to keep trencn widths wi.thin bounds of the easements and/or street rightsrof-way, usinq measures to keep widths within reasonable and safe cond�t�ons. The contractor shall be fully responsible for damages outside easem�sits and structures within streets or easements, 2.21 DEPTH AND p�,IC��T �prfl'RCL: For sewer and: designated water lines, grade hubs will be set by the Ehgineer at intervals of 100 ft., and the contractor will be furnished r,uith a "cut sheet" sh�,winq the difference in elevation between the hub and the flaw line of the pipe. The grade hub will be offset fram centerline a convenient distance, which distance is mutually agreeable to the Contractor and the �gineer, Z�e Contractor shall conduct his operations in such a nanner as �not to _ destroy the stakes until the pipe has been laid and checked for aliynrr.�nt and grade. Grade stakes will be set at a convenient distance from the centerline of pipe wh�.ch will permit such leveling up operations as necessazy ahead of ditching without disturbing the grade stakes. All the grade stakes will be set tiaithin a short period of time near the beginninq of the job. SeF�er lines shall be laid to grade and aligrut�nt using laser instnanent that is in good operai�le condition. The laser equipment shall be • operated by qualified personnel using grade stakes for check on elevations. Batter boards shall not be used without the F�gineer's � approval for sewer lines. Water lines, where laying to qrade is requixed, may be laid using batter boards, and/or grade stakes set by the Engineer, for construction. In general, water lines shall be laid so as to have minim�an cover of three (3') feet after finish gradinq is pertormed. Water lines designated to set to grade shall be at elevations shown on plans. 2.3 SI-�rING AND gRACING: This Contractor shall furnish and install such sheeting, bracing, and/or trench jacks as may be necessar� to insure safe working conditions for personnel required to work in the bottom of the trench. It is not the desire of the City or the �:gir.eer to assume the reponsibility of deciding what conditions are safe and what canditions are unsafe. The Contractor is expected to exercise good ' Ju�9ement and due caution in regard to the safety of his personnel. 2-1 -.. _ , , -' . . � .�o � � . .-"' . . . . '. . . . �� _. . . ,. • - . . . - .' .. . ,.:::eh.r�C."�- _...__. ,.w.✓...- . ..... . . . � .... .. ... . .. x .. . _. . . � . 2.4 DEWAZ�RING: This Contractor shall be responsible for the property handling of water from any source which may find its way into the trench or excavations. Any water in the trench where pipe is being laid iraist be disposed of in a satisfactozy manner so that pipe laying may. be done in the dry. Also, concrete work must be done in the dry which will require ihat such water as may occur in any excavation such as the mar�loles shall be removed. 2•5 BOTIt"�'� TRII�ICH C�tADING: Trenches shall be excavated to depths as required for the laying of pipe to the grades shawn on the Plans. Excavation shall be carried to the depth belvw profile grade as necessary to pennit the installation of embec�ent material required for the pipe. 2.6 �CAVATIODI FOR STRUC'IURES: Care shall be exercised in excavating for the floor slabs of structures, and for the foot:ings n�anholes. It will be required that these concrete footing and floors be poured on undisturbed earth. In the event that the Contractor should over-excavate belaa the planned footing or floor elevation, then such over-excavation shall be filled in with concrete at the Contractor's expense. Compacted backfill for filling over-excavated areas will not be acceptable. 2.7 SAC�'ILL AROUND PIPE AND STRU�Jr'�tr„S: All pipe shall be bedded in sand or grar,ular material, as specified herein, in accordance with details shawn on the plans. Backfill above the e�t shall_ can�ly with these specifications. All of the backfill material shall be co�acted and the Contractor, at his discretion, may use either the pneumatic tan� method in 8" lifts or pressure jetting with water, as herein descri.bed. If the jetting method is used, the first lift shall not exceed 3 feet and shall be thoroughly jetted before any mr�re backfill is placed. Pressure jetting shall continue in each lift of backfill until that lift is cai�letely saturated. The equipment for pressure jetting shall be ec�ial to a fire hose having a length of 3/4" pipe attached to the end which can be inserted dawn into the backfill while large quantities of water are being forced through under pressure. The source of water should preferable be a tank track equipped with a pur,� for supplying large quantities of water under pressure. �rience has shawn that gravity flcw from a tank truck will not produce the desised results. TYie jet pipe shall be inserted at 6' ma�cirrnun intervals, and sufficient water shall be injected so that the backfill material will "melt and flac�T" together, and there will be no bridging across dry areas. Where the tan�ing method of backfill is used the material shall be placed in lifts not to exceed 8" depth, wetted to approximately optilrnun moisture content, and co�acted with pneumatic, vibratory or other approved mechanical ta�s. Additional litts shall not have placed until the lift being compacted has attained a density of at least 950 of standard Proctor density. Contractor shall furnish water. 2-2 r _... ..,.. _, _..._ - .....-_:�_. .�:...��..,>m , _,,,.�..�.:- ""'^'�t...ti....._ .- Care shall be exercised in jetting the first lift to insure that the backfill material is thoroughly consolidated around the pipe without floating the pipe up fr� its proper grade. The Contractor shall correct any pipe which has been floated up frcxn grade. It is the intent of these specifications that, by good backfill procedure, the backfill will be of such density as to preclude after settlement. This Contractor, upon request, shall refill or repair any trench areas which may settle within one year after final acceptance of the project. Backfill around manholes and structures shall be done in a s�milar manner to that described above for backfill of pipe trenches. 2.S ROCFc F,XCAVATING: Rock will be defined as any material �.^�•,:.r.tere�? in trench, tunnel or manhole e�cavation which �st be rem�v�.3 by use of air tools such as jack h�rs or blasting. Ma.t�rial which carinot be dug with a back hoe of the 12 C.Y, class will generally fall into this category. Where there is some question as to whether a material is rock or not, the Ehgineer�s judg�nent will be final in regard to suGh classification. No rock will be permitted in backfill in the pipe zone fran-}�ottom of trench to two feet above the pipe nor in the top 18" oi trench backfill at the ground surface. Other than these two locations, rock may }�e placed in the backfill provided the size of pieces in the largest dimension does not exceed six inches. In such cases where the rock cannot be used in the backfill, then such rcck shall be disposed of off the project site by this Contractor. Where blasting is required, the Corit�.Q�or �11 sec�.e a �.rm;t fram the City for such blasting. The contractor shall exercise due caution and shall be responsible for any d�n4qe or claims resulting frcm the blasting. Mats, and/or othex. safety precautions shall be used as � needed, 2•9 N�?�CE OF SL�F'ACE: It will be this Contractor`s responsibility to maintain the trer.ch backfill and c,x�rking areas so as to present a s-n�ooth, uniform and neat appearance at all times until the final estimate has been issued. Where some trench settlement occurs after a rain, the area shall be rebladed and br�ught back to a smooth uniforr.l condition. Where the pipe tren�h crosses roadways or traverses a roadway shoulder, such areas shall be kept well maintained by this Contractor unt,il project acceptance and then through the guarantee period. 2-3 � � :� .,:�,, . -- , ••�-:t::..",^�>:� ,: •::': ,",: : ,� - 2.10 PIPE II�IDN�1T MATERIAL; Pipe shall be embedded in granular material according to the deta.ils shown on the plans. The embec�nent material shall be as specified under Item 15, which includes details for e.mbeci�ent at various conditions. 2.11 TEL,E,'VISION 1NSPDCTION: Prior to acceptance of the sew�er line installation by the City, a television camera shall be pulled through the line to inspect for unacceptable taps, joints or low sections. The line shall be thoraughly flushed �diately prior to insertion of the cam�ra. All deficiencies shall be corrected by the Contractor and reinspected. The City's camera will be made available with one week's notice so that a crew can be scheduled to perforn the w�ork. The Contractor shall reimburse the City for all labor costs involved, prior to acceptance of the 4x�rk. � E�ID OF ITFT1 2-4 � - ,, ;; i , - - -. - . . � . . - - _ ` .:.; t: ` { 'Q`>-�;.v. �.: . _._ r. _ ITF�I 3 - CONCRETE AND REINFORCING STF�, (STR[TCITJRF,S) 3.1 GIIVERAL: Concrete shall be c�t�osed of portland cement, fine �ggregate, coarse aggregate, water and watPx a dispersing agent properly proportioned and mixed as hereinafter spe�ified. A11 structural concrete shall be Class 3000 psi, minim�an cvn�ressive strength at 28 days, unless othezwise shown on the plans, 3.2 MA'1'FF2TAT S; po�land ceinent shall confoxm to the specifications and tests for 7.�pe I portland cemenic of the American Society for Testing Materials, Serial Designation C-150. Fine aggregate shall confrom tA the Standard Sp�ification for Concrete Aggregate, AS�1 Designation C-33. In addition to the require,ments of the AS�•i Specifications, the fine agr,regate shall also cronfonn to the following: l. Loss shall not exceed ten (10�) percent�by weight in five (5) cycles when tested for soundness in accordance with ASTN Method of Test Designation C-88, except as noted AS�I Specification Designation C-33. 2. The a�unt of deleterious substances shall not exceed R�cor�ndecl Pezmissible Limits as set forth in p,Sgq Specification Designation C-33, and "other deleterious- svbstances" will not be allowed, 3• The mortar, for test of fine aggregate, made and tested in accordance with Stanc?ard N1eth� of Test for I�3easurinq Nbrtar'riaking Properties of Fine Aggreqate, AS�I Designation C-87, shall develop a cca�rehensive strength at 7 and 2g days of not less than 100 per cent of that developed by the mortar specified in that method as the basis of c�.nsation. Coarse aggregates sha11 conforn to the Sfiandard Specifications for � Concrete Aggregates, ASTP�I Designation C-33. In addition to the requir�ments of the AS�� Specifications, the coarse aggregate shall also confonn to the following: 1, wear shall not exceed 40 per cent when tested accordirig to ASTP�i Standard P�thod for Abrasion of Coa�se p,qgregates by Use of �-:e Los Angeles rlachine, Designation C-131. 2- Loss shall not exceed 13 percent by weight in five cycles when tested for soundness in accordance with SZ't�i Method of Test Designation C-88, except as noted in AS��I Specification Desigr:ation C-33. 3-1 ..; , ,- ___ . , . -.. ,: . . . 3. The amount of deleterious substances shall not exceed � Rsccmt�nded Pernissible Limits as set forth in AST1�I Sp�cifications Designation C-33, and "other deleterious substances" will not be allawed. For the Contractor's ccnvenience, the AS'Il�i grading requireme,nts applicable to this project are listed hereinafter: FINE AGQ2�.�GATE SIEVE SIZE $ PASSING 3/8 Inch ----- -- 100 No. 4 --- 95-100 No. 8 ---- --- 80-100 No. 16 - 50- 85 No. 30 -- -- 10- 60 No. 50 _.�_ 10- 30 No. 100 — 2- 10 COARSE AGGRDGATE SIEVE SIZE S4. OPIIVINGS � PASSING 2�� —' -- 100 1�� '--- 95-100 3/4" ---- 35- 70 3/8" -� � � �� 10- 30 #4 -- 0- 5 Water for concrete shall be clean and free from oil, acid, alkali, organic matter, or other harmful impurities. Water which is suitable for drinking or for ordinaxy household use will be acceptable for , concrete. Where available, water shall be obtained from rtiains or a caaterworks system. 3.3 CONCRE`I'E PROFORTICNS AND CONSIS'III�1CY: Concrete shall be proportioned to give the neces�azy workability and strength and shall confonn to the following governing requirements: hiin. 28 Day H1in. CemP�t Max. Size r1ax. Water Sl� . Corrpressive Bags Per of Coarse Gals. Per Incres Strength C�. Yd. Aggregate Bag 3000 5.S 1 Z" 6.75 4-6 2000 5.0 ' l�" 7.00 4-6 1500 (cradle) 4.0 12" 8.00 3-4 Stabilized Backfill 2.0 3" * 8.00 3-4 *f�ay be "pit run" aggregate. 3-2 y The proportion of fine arid coarse aqqreqa� shall be such that the requirements of the following table are complied with: Maxitrn.un Size of Coarse Aggregate Ratio of Coarse Aqgreqa� � g�e Aggregate on Basis of Dry and Rodded Volim�es r ' ` i Maxina�n 3/4" Q.6 1.5 1" and over 1.0 2.0 ' In no case shall the am�unt of coarse material }�e s�� P�uce harshness in placing and honeycanbinq in the 5��.e �� fo� �,e removed. In the determ.inat.i.on of the amount of water required for mix, consideration shall be given to the moisture content of the aggregate. The net amount of water in the mix wiZl be the ��t added at fihe mixer; plus the free water in the aqqreqate; and minus the absorption of the aggregate, based on thirty (3p) minutes absorption period. No water allowance will be made for evaporation after batchinq, The methods of ineasure of riaterials shall be such that the proportions of water to cement can be closely controlled durinq the progress of the wvrk and easily checked at any time b�, the g�g�eer or his representative. To avoid unnecess�y or haph�Z�d changes in consistency, the aggregates shall be obtained from a source which will insure unifonn quality and grading during any single day's operation and they shall be delivered t.o the work and hand.led in such manne,r that the variations in rioisture content will not interfere with the Steaay produc�ion of concrete of reasonable degree of uniforn,ity, A11 sources of supply shall be approved by the gzqirieer. . Al1 materials shall be separately and accurately measured. Measurer:�nt may be made by weight or by volt�ne, as may be elected by the Contract,or; however, all equipm�nt for meast:resnent of materials shall. be subject to approval by the E�gineer. The prcFortions of the mix shall be such as to produce concrete that can be puddled readily into the corners and angles of the forms and arou�:d tl:e reinforcing without excessive spading, and without segregation or undue accl.u:�lation of wuter or laitance on the surface. 3.4 TRIAI, NII�S; The Contractor shall furnish the gzgineer with t1:e ccr.crete mi�; design and laboratory test data for the actuai design to be used well ahead of any concrete placement, The concrete supplier shall so desigilate the particular mix c:esign that it can be identified by records that are kept by the supplier and delivery tickets shail shoc� such mi� design. The Contractor shall funZish the �gineer with copies of delivezy tickets shawing r,tix designation. 3-3 .,r - _ e.� -:� _ .., . .. . . .. . . .. . . .a.. -, .w y+:' .;,,a.a .- . . . - . . -_ . .. . . ..-._ .. . . , . . ' � � ..:s..��.._,.- :.. ... . ...- ..�.::..�- .,,.......�o+w,a �� . . . For concrete other than manholes, blocking cradle or structures requiring m�re t-han total of ten cubic yards, at least 35 days prior to the begi.rining of concrete placing, the Contractor shall sukxnit sar�ples of materials he proposes to use and a statement of praportions proposed for several concrete mixes, having sufficient range in sl� to cover all placing conditions. The Engineer will require that laboratory tests be made and such changes as may be necessary to meet the requi�--elnents of the specifications. L�oratoYy tests on trial mixes shall show a 28-day strength 15 per cent higher than the stated minim�un 28-day strength, Fresn these preliminary tests, the ratios betwcen 7-day and 2g.�lay strengths shall be " established to determine at 7 days the strength necessary to satisfy the requised 28-day strengths. These ratios shall be modified as the w�rk progresses as indicated by result of tests on cyl.inders made fram field mi.Yed cor.crete. If, during the progress of the work, it is found im�ossible to secure concrete of required workability and strength with the materials being furnished by the Contractor, the Engineer may order changes in proportions or materials, or both, necessary to secure the desired properties, subject to limitations already stated. The Contractor shall not make changes in materials, either gradation, source, or brand, or proportions of the mixture after their having once been approved except by specific approval of the Ehgineer. -- The Contractor shall have the preliminarv testing done by an approved testing laboratory, and shall pay for all prel9runazy tests on aggregates and test cylinders. If Contractor can provide mix design and satisfactory test cylinder record frcan a recent job using same. materials, then the prel�mi.nary test requiresre�nt wi11 be waived. 3.5 TRANSIT MIX CONCRErE; Transit mix concrete wili be permitted in . lieu of mixing on the job, provided all of the following conditions are ccr�lied with: (1) All requirements othenaise specified for mi_xing on the job shall apply. (2) Sufficient transit rLix eguipment shall be assiesned exclusively to the project as required for continuous pours. (3) Satisfact�ry evidences shall be furnished that the delivery of concrete shall be continuous at regular and uniform intervals without stoppages or interruptions. (4) All concrete shall be deposited in the forr.is within 45 minutes after �aater has been added to the mix. Concrete retained iri thc� truck longer than 45 minutes after water has been ad�ed to the mix will be rejected. 3-4 r ._. ._.. .. _ �. .._� ...�.-_:_�_ •.::,.,. _.. ..,�.�..n . __. _.,,...�.� � 3.6 TESTING AND CONTF�JL OF MIX DiJRa�TG CpNSTRUCTION: Sufficient test cylinders shall be made by laboratory personnel at intervals to detennine co�liance with the specifications. Test cylinders shall be made in groups of three for each compliance test, so that one cyl.inder can be tested at 7 days, one tested at 28 days and the r'�naininq cylinder is to be tested in event other tests are questionable. Test cylinders shall be made for each mix design and for each ten t10) cubic yards of concrete placement; except where concret� is to be used for blocking, cradle or encasement, tests after compliance tests may be wa.ived by the �gineer, The ca�ression tests of ooncrete cylinders shall be made by independent testing laboratozy appraved by the City. The testing costs as described herein shall be paid for by the ' Contractor; haaever, the City, at its own expense, reserves the right to have additional tests performed, The control of proporcioning and mixinq of all ready mix, transit mix or - central plant concrete shall be under the supezvision of a �ained representative of an established independent testing laboratozy, which laboratory has been approved by the Owner. The ,laboratory representative shall work in cooperation with the E�qineer, and shall fi.irnish to the F�gineer a s�xy of all tests which are performed and for each concrete pour shall fi�znish a certificate of co�liance with the specification. No concrete shall be poured Witl�out the laboratory representative being present at the batching plant. For concrete pours of ten cubic yards or less, the �hgineer maY waive �e r�q��nts for a laboratory technician. � 3.7 FORDLS: Foxms shall be built mortar tight, and true t� line and grade. Studs, walers, and approved foznl ties shall be used at the proper spacing and of the proper size to maintain Straight lines on all vertical surfaces. Forms for surfaces requirinq a rub fini� S�1 be lined with plywood, "riasonite" or other approved form lining. Forms on vertical surfaces shall rer,�in in place a min.urn�n of six (6) � hours. Fozms under horizontal svrfaces shall rema,in in place seven (.7) days. 3.8 PLACING CONCREi�: The Cor.tractor shall give the E�gineer at least 24 hours advanced notice before startinq to place concrete in any unit of the structure to permit the inspection of rcrms, the reinforcing steel placem�,nt, and preparation for pourinq, Unl.ess autharized by the �hgir.�er, r.o concrete shall be placed in any unit prior to the corrg�letion of the form work and placement of the reinforcement. The sequence of placing concrete shall be as provided on the plans or the specifications. The operation of depositir.g and co�actinq the concrete shall be conducted so as to fonn a cc�act, dense, i�rvious mass of uniforr� texture which shall show smooth faces on all surfaces. The placing shall be so regulated that the pressures caused by the plastic concrete shall not ex.ceed the loads used in the design of forms. 3-5 � "-.:- �n!;r :�g'�.: "+.^.�y .:� .^��• _. _ _ _ , ,:- Careful attention shall be given by the Contractor to the proper curing of all concrete. 3.9 FR�ZIl�IG wEATI�R: When depositing concrete at or near freezing tei�eratures, the concrete shall have a ten�erature of at least 50 degrees F. , but not rrore than 120 degrees F. , when aggregates are heated. The concrete shall be ma�.ntained at a te�erature of at least 50 degrees thoroughly hardened. When necessary, concrete materials shall be heated before mixing and heating apparatus such as stoves, salan�nder, etc. , shall be supplied to maintain the concrete at the � required te�erature. The Contractor shall be responsible for the protection of concrete placed under any and all weather conditions. No concrete shall be poured on frozen or thawing subgrade or during unfavorable weather conditions. No concrete shall be placed when the t�rature is 40 degrees F, and falling; hawever, concrete may be placed when t��erature is 35 degrees F. , minitrnun, and rising. 3.10 CURING: All concrete shall be cured by keeping continuously wet for seven days after pouring. On surfaces which do not require a rubbed finish, the concrete may be cured by supplying a curing co�ound in lieu of water curing if the Contractor so desires. G�ring co�ound shall be "Hunts Process" or approved equal applied as closely behind�concrete . finishing as possi.ble. _ 3.11 RUB-FINISFiED EXPOSID SURFAC�S: The follc�wing �sed vertical concrete surface shall �e given a rubbed finish: The exposed vertical surfaces to a point one (1') foot belaw the final ground line. _ The rubbing operation shali be in accordance with the follawing provisions: As soon as forr�s are remaved, all necessary pointing sha,l.l be done. When the pointing has set sufficiently to permi.t it, all surfaces requiri.ng surface finish shall be wet with a brush and given a first surface rubbing with a No. 16 carbonind�n stone or_an abrasive of equal quality. The rate of removal of forms shall be determined by the rate of the ce�lete nibbing. The nzbbing shall be continued sufficiently to bring the surface to a paste, to remr�ve all forr�s marks and projections, and to produce a snooth dense surface without pits or irregularities. The use of cesnent to form a surface paste will not be __ permitted. The material whicn has been ground to a paste in this precess shall be carefully spread or brushed uniforn.l.y over the surface and allcwed to take a reset. In general, chamfered corners shall not be rubbed in the first surface rubbing. During the precess of conc�tioning the co�leted structure for final acceptance, the suriaces of the entire structure requiring finish shall be cleaned free from drip marks and discolorations and shall be given a final finish n�bbing with a No. 30 3-6 ;. /,, . . . ..- . :._ .. . - . � `, . _ ..- , � .. . '� ..:'-�,r lr 4:= IP,. ..:) r. .h -r. ;�q '^� t �'+�s: . . . . ., ' �.: . . � ...-- . . .. . ... ... „M. ... . _ . . :. carborundtun tone or an abrasive of equal quality. On �rotr,pletion of this rubbing, the surface shall be neatly stripped, with a brush and ttbrtar on the surface and shall be allow�d to take a reset, T� �face shalZ then be washed dawn wi.th clean water. The entire stsucture shall be left with a clean, neat and unifo�n appearinq f;r+;sh ar:d sha11 be uniform in color. 3.12 REINFORCING ST�'�'r•; Reinforcing steel shall be billet steel, �.ntern�ediate grade, deform�d bars, confo�inq t� p�.S.T.M. Specification A-15, or shall be rail steel, deform�d bars confozminq tA A.S.T.M. Specification A-16. All mi.11 scale shall be reritiaved },�fore placing and bars shall be kept clean unti,l concrete is placed. The ste�Z sha11 be placed in the forris as shc�m on the plans and shall be main�-�.air:ed in place by wiring or by any other effective means approv� by L,he E.hgir.eer. 1 II`� OF ITII�i 3-7 �. ITE1�1 4 - CAST IRCX�T PIPE AND FITI'IlQGS 4.1 G",3�'E�L: This section covers the furnishings of all cast iron pipe and fittings. The plans shaw the sizes and general arrangem�nt of all pipes and fittings; hawever, the responsibility for furnishing exact lengths of the various pipes for proper "make-up" and for providing special items as may be required to si.rc�lify or f�cilitate the installation rests with the Contractor. Cast iron pressure pipe shall be new, manufactured in the United States ot America and acceptable to the State Fire Insurance Comnission of Texas and Undezwriters Iaboratories approved. ° Cast iron pipe shall be ductile cast iron meeting the �+,;rem�nts herein specified. Gray cast iron pipe shall not be furnished and installed without written approval by the Owner. Pipe of same size, for each run, shall be same type rietal. The pressure rating, ty� metal, metal thi.c}mess, class, net weight of pipe without lining, length of pipe and name of manufacturer shall be clearly marked on each length of pipe. Pipe shall be rZechanical Joint, "Fastite", Bell-Tite or TY'It�N, or flanged as required. Mechanical joint pipe shall be in accordance with ANSI Specification A21.11 and furnished with corg�lete Mechanical Joint accessories.- The bolts and nuts shall be high strength, corrosion-resistant alloy with tee-head and hexagon nut. 4.2 GRAY CAST IRC'I�1 PIPE: Pipe shall be designed in accordance with AWt�lA Specification C101 (ANSI A21.1) method of design using 21,000 psi bursting tensile and 45,000 psi m�dulus or rupture. Pipe shall be a minimtun of Class 150 designed for 150 psi water pressure, S ft. cover, trench condition "B", flat bottom, no blocks, tamp backfilled and at least 85 psi water han�ner allawance and 22 t.o 1 safety factor. , Pipe is to be manufactured in accordance with AW[aA Specifications C106-75 (Metal Nblds) or C108-75 {sand-lined molds) except minir�n.un bursting tensile of 21,000 psi, r.tiniim.un r.�odulus of rupture of 45,000 psi, and ma;cimtmt modulus of elasticity of 10,000.000 psi. All flanged end pipe shall confonn to either At+7f�1A C106 for physical and chemical require�nts for pipe barrel and ANSI A21.10 tor flanges. Flanged fittings shall conform to either AA� C110 or .�;SI 21.i0 or ANSI B16.1. Flanges shall be Class 125 for all pipe, fittings, and valves, unless othexwise shawn or specified. Gray iron cast iron pipe shall be mininnnn class thickness meeting requir�mnts of ANSI A21.1 for five {5') cover and laying Cor.dition B. 4.3 DL'CTILE IRON PIPE: Ductile iron pipe shall meet requirements of A�� C151 and/or A1�iSI A21.51. Pipe wall thic�ess shall be detezr.lined 4-1 .. � =. • ::.... , . .. �:. : :. ,; � -- , .,, , , _. .._ . . . . . . �,: :� .•; : :�: „.. , _ - ,.:�,->;,.a,..,pt- --.... _,,.,_�... .. . . . . ._ _ .. in accordance with AWWA i�lanual H3 or ANSI A21.50. Pipe sha1Z be designed for not less than 150 psi wr�rl:ing pressure with i00 psi surge, eight (8') foot cover, trench and truck loads. Joints may be as shawn above. - Ductile iron fittings shall meet requirements of At� C110 or ANSI A21.10 for not less than 150 psi working pressure. 4.4 LINING AND COATING: Pipe and fittings shall be lined with an approved thin cesre�zt 1 i n i ng �aled with an appraved bit�sni.nous seal coat in accordance with ASA Specifications A21.4 wherever applicable; and as further specified herein. Thicl�ess of cement lining shail not be less than one-half (�) thiclmess specified under Section 4-10 of '_'�e ASA Specification. Outside coating shall be coal-tar pitch varnish,� to which sufficient oiI shall be added to make a szmoth coating� t�gh and tenacious when cold, not "tac�.l�" and not brittle. 4.5 GASKETS: Gaskets for flanged joints shall be full face type, natural red rubber, 1/16-inch thick, Gaskets for pushron or�mechani.cal . joints shall be rulaber suitable for both water and sanitary seWaqe, IIVD OF ITII`�i 4-2 —_. .r _ .... ._, ,_,..:. �.�.:� ,-.,.:.....;.�.:..�:..,�.� ITII�i 5 - INSTALLING CAST IRON PIPE AND FITTINGS 5.1 DESCRIPTION: Cast Iron pipe, fittings, specials and valves are to be installed at locations sh�wn on the plans and specified in these Contract Documents. If a profile grade is indicated on the plans, the pipe shall be laid accordingly. 64here a profile grade is not shawn, the pipe shall be laid to an even grade from point to point avoiding minor high points that wnuld tend to form aix traps. Nonnaliy the pipe will be laid with approximaLley 3 ft, cover. h�ere pipe is to be laid behind a future curb, the cover may exceed 3 ft. , ar,d will be laid to folla� the curb ` grade. Trench depth inforn�tion will be furnished where this condition occurs. All of the requirements of the specifications under the section, D�ec7ment for Pipe, E�cavation and Backfill, and Backtilling o� Trenches under Paven�nt and/or Within Higl7way Right-Of-Way, govern for Iaying cast iron pipe, fittings and specials. 5.2 PIPE HANDLING: All pipe, fittings, special castings and gate valves shall be larrered into trench by derrick, tripod, crane or other suitable machine and shall not be rolled in or d�ed into the trench. Pipe fittings ar:d valves shall be handled in such a manner as not to danr�ge the coati.ng. Before lawering and while suspended, each piece of pipe shall be rung with a light h�x to detect flaws, and any unsound pipe shall be rejected. All dirt and trash that may be in the barrel of the pipe, on the spigot and/or in the bell shall be resroved while the pi�e is suspended. Al1 pipe and fittings shall be handled and lawered into the trench with slings. The use of hooks for handling pipe and fittings will not be permitted. Where it becomes necessary to deflect the pipe to avoid obstructions, the deflection of each joi.nt naust be approved by the �hgineer. The pipe is to be kept clean during the layir.g operation and free of all sticks, dirt and trash, and at the close of each operating day the open end of the pipe is to be effectively sealed agai.nst the entrance of all objects and especially water. Unless otherwise specified or unless othe��ise directed by the E�gineer, the joints for all bell and spigot cast iron pipe, fittings and s�ecials shall be made, using lead and/or mechanical joint for jointing materials -- and/or "�tcn Joint" (or similar joint) . 5.3 JOIi IT i�IAKIIQG 5.3.1 JOITITING MEC�iANICAL JOl�]T PIPE: This type pipe shall be jointed in full accordance with the manufacturer's rece�nendations and shall 5-1 °4 . � R'i�v ti:' � . , � , : .,.� . ..� ..,�JL ....:� �=•�c .:,..�, .:y �ry ... t - - : ... ,.. �...-. ' : • ''. ' •- '.�:i . • .'.-' be done in a neat and w�r]Qnanli]ce �nner, Care shall be taken to prevent shearing the bolts. The jointing of the pipe shall be done as follaws, unl.ess othezwise directed by the EYiqineer, a. After carefully cleaning both spiqot and bell and aftex slipping the follawing ring and gasket over the spigot end, the spigot shall be slipped into the bell. b. If requested by the F.�qineer, a lubricant shall be applied to the spigot to assist in assembly. c• The gasket shall be carefully seated by hand so as � b� even in the bell at all points, d. After drawing up the follawer ring to uriiform be�._=_7 aqai nct the gasket, the bolts are to be inserted and tigh�=ned by hand in pairs using bolts opposite each other. e• The nuts are to be tiqhtenen a�ly � �ld the required pressure. �t,ension wrenches, or pipes over wrench handles, will not be permitted, Ten (lp��j ratchet wrenches shall be used to ti.qhten the nuts, unless other type wrenches are approved by the F�gineer. _. Sand cast "T" bolts shall not be acceptable. The finished joints shall be neat and uniform and shall be watertight. 5.3.2 MAKING FI,�1C� JOIl`]TS: The Contractor shall be responsible for the measurement of all connections. Flanged piping shall be erected in accordance with the controlling dimension shown on the planS. �� piece of flanged pipe shall be thoroughly cleaned to relr�ove dirt, rust, grease, and other foreign matter, arid flanged faces shall be thorougY�,ly wire brushed to insure even bea�.�q for gaskets and mating flanges. Gaskets for flanged joints shall be composition sheet-packinq, fu1� faced, factory cut, of ene-sixteP�th (1/16") inch thiclmess, red rubber, � Cranite", or approved equal. Flange bolts shall be installed with bolts in one direction. Flange k�olts shall be tightened, each in turn, at a uniform rate around the joint. 5.3.3 NIAKING PUSH-ON JOINTS: The jointing o� this type of joint shall be as recor��el.ded by the manufacturer. The proc�ure for jointing shall — be generally as follaws: a• The spigot and socicet shall be thoroughly cleaned and drieci before starting the assembly of the joint. The gasket seat in the socket and the gasket shall be wiped with a cloth. 5-2 -_., .'� �'. % _.. .. _ . , _ . . � .. _ .. . . - _- . . _ ` b. A thin film of liabricant shall be applied to the inside surface of the gasket that will come in contact with the enteri.ng pipe spigot. c. The spigot shall have a film of lubricant, if necessa��. d. The joint shall be made by exerting sufficient force on the entering pipe so that its plain end will move past the gasket. This exerting force may be by use of the °crawbar method," (8" and �naller) ; "fork-tool method," (8" and snaller) ; "jack method," (10" and larger) . 5.4 CCNCREI'E BLOCKING OF PIPE AND FITT�IGS: Concrete blocking shall be placed at all bends, tees, crosses, plugs, fire hydrants, etc. The concrete shall have a 28-day cor�ressive strength of not less th� 2,000 pour_ds per square inch and shall be as specified under Item No. 3. The blocking shall be placed to rest against fism undisturbed trench walls. The support area for each block shali be sufficient to withstand the trrust, including water hamn�r. The area required will be co�uted based on 150 psi working pressure plus 30 $o allowance for water ham�rer. The support value of the soil is estimated to be 2,000 pounds per- square trench bottcm. Concrete shall be installed in such a manner not to interfere with ther repairing of the joint. E�ID OF ITII1 5-3 ti . .�. •. -+,. �_-. ,. � .i-. .. , .�. �., .. .... _. . ., . .- ._ . .� _. .. . _ , . .. :_:::�. :. . �.,.,< �,:-._: ..�-.... . ITa�I 6 - CONCRETE PRESSUf'cE PIPE 6.1 GIIVERAL: This specification includes materials, fabrication and delivery for concrete cylinder pipe and specials of the various sizes and classes as shown in the proposal and on the Plans. All concrete cylinder pipe shall be mar,ufactured in accbrdance �� .�ts of American Water ti�lrorks Standard C-303-78, entitled °Reinforced Concs.ete Water Pipe - Steel C�linder Z�, Pretensioned",� or AWWA Standard C-301-72, entitled "Prestressed Cancrete Pressure Pipe - Steel C�linder � for Water and Other I,iquids", with additional requirements and/or modifications as described herein. 6.2 PIPE C�SSES: The sizes and design pressure classes sha.11 }.� as shown in the Proposal. Fittings, specials and connections shall be of �a class not less than the associated pipe. Miniirnan class shali be 150. 6.3 SPECIAL REQUIRII�i TS: . 6.3.1 CET•I�7T: Cement for use on inside and outs�de motar coatinqs shall be 2�pe II Portland Cerrient, with not rrore than five (5�) gerc�nt tricalcuim al�nisiate (C�) . Mortar strength for both linings and coastings shall be r.ot ess than 4,500 psi after 2g days, as detezmi.ned by co�ression tests on 2" x 2" cubes, 6.3.2 BEI,L RINGS; Bell rings shall be as shcx�m in AWf�TA C-303; except, . thiclmess shall not be less than 3/16". 6.3.3 FLANC�S: Flanges shall have American Standard Drilling of class equal to or greater than the pipe class, unless otherwise sp�cified, and shall r,�tch class of valves or appurtenances which are attached. Flange gaskets shall be 1/16-inch thick red rubber, {ull faced. Valves to be installed in concrete cyLi.nder pipe runS shall have flanged ends, drilled as per ANSI #125, unless otherwise shavn on plans. Where main line valves are to be installed in runs of rub}�r gasket pi , Contractor sha11 furnish and install short adapter with ends flange toe rubber gasket, C-303 joint, Joints for connecting to valves shall be insulated type for protection against electrolysis. _ 6.3.4 CURIr1G; The pipe shail be cured by steam curinq (hot water vapor) at a ten�erature of 100° F, to 150° F. The pipe lining shall be stear•.i cured for not less than 12 hours before placing helically waund reinforce�nt. The co�lete pipe shall be steam cured for an additional period of not less than 36 hours or water cured for a period of not less " than 144 hours (6 days) . �;later curing is not acceptable if exposed to tesr�eratures belaw 40° F, during curing period. 6.3.5 IZISULATID CONNECTION: The Contractor shall furnish insulation gaskets and/or bushings at all points where external valves, pipe, or rittings are connected to the line. 6-i --_. ,,. . . _. . .-- .;... , -: . __-. :. .. :. .: _ � _ . . _._ . ` � - , , '"'" .. ...:.. . _.n... :....:.� :,�: ..... ...-.:o+::r.r,ca{�Il�►r � �.u«.�i._. " :. �.�. .. , �- �_.........:.. .:....,� .... �. . - ..:. �:. ...... .. .... � . . . r.M11 . . . .. � . Where outlets or taps, are threaded, the Contractor shall furnish ar:d install bushings similar or equal to MayCo Dielectric Bushings as made by the D9ay Co�any, Galesburg, Illinois. Where flanged outlets are to be insulated the Contrctor shall furnish "Insulket" flange gaskets, insulating sleeves and two plastic washers for each bolt, as supplied by Tejas Plastics Materials Supply Co. ,_ Fort Worth, Texas. 6.3.6 SPDCI�IS: Bends for deflections shall be provided as necessary for installation to the profiie shawn on the plans. Where deflections do not exceed five (5) degrees, the spigot end of pipe may be installed on mitered ends of pipe. Bends shall be furnished and installed for deflections greater than 5 degrees. 6.3.7 COATING AND LINING: The ceme.nt m�rtar lining inside the steel cylinders and the m�tor coating on the eXterior of the pipe shall be not less than that specified in applicable specifications. P�here pipe is to be installed in castings, the Contractor shall furnish pipe with built-up bands of mortar coating that are to be of a slightly larger cliameter than �he pipe beils. The built-up bands shall be a�out 2 feet long and shall have centers about center and s pipe length frcan each end. 6.3.8 INSPECI'ION AND TEST PROC�URES: All welds on fittings ar_d specials with deflection greater than five (5) degrees shall be tested and the test shall be witnessed by an independent testing laboratozy, if . such laboratozy has been selected and retained by the City. - Representatives of the laboratory and the E7�gineer shall have access to the work �aherever it is in preparation or progress, and the pipe manufacturer shall provide proper facilities for access and for inspection. Material, fabricated parts, and fittings which are discovered to be defective, or which do not conforrt to the requ�ements of this specification will be subject to rejection at any time prior to final acceptance. All welds for watertightness in special pipe and fittings that have npt been hycirostatically tested may be examined by use of visible dye p�netrant system meeting requirements of AST1�4 E165; however, collar reinforcement and all other lap�aelds shall be tested by .intrcducing air ur.der 10 psi pressure betc;�een the collar and cylinder and checking for leaks around and through the welds with soap solution. The City reserves the right to require testing of welds for designated siecials and/or fittings by use of air under 10 psi pressure, if the Owner's representative is not satisfied with the dye penetrant r.iethod of testing for watertightness. The area to receive the dye penetrant shall be cleaned free from contaminants that might interfere with the penetrant process. The t�erature of the steel in the weld area shall be between 60 and 125 degrees F, when the per.etrant is applied. Dwell time of si�: hours shall be allawed after application of the Fenetsant and developer before interpreting the results. Detects that are found shall be repaired and the test repeated until all defects are eliminated. Colored penetrant shall be removed before fittings are lined. 6-2 r , , �'��.^ �i`. . ... . . . . . . .. . . . � . . . .� . . ..�. . . . . . . . .. Y _ 6.3.9 PIPE LAYING C�pI�IDITIONS: The normal mini�ra.un cx�vex- o�� t� of pipe barrel is to be about forty-two (42") inches. Where cover over �t�op is such as to require special treatment, stabilized backfill materia]. is to be used. The grades and elevations shaHnz an the approved P� and profile drawings shall govern. It is the intent that all ferrous metal 1�e protected �n ��pletion of pipe laying which will require sor� shop applied coatinqs and some field applied coatings. Coatings that will not interfere with installation shall be shop applied. Shop application of c�nent mor�tar, 3/4" minim�,un thickness, shall be used for protective coatings. Galvanized wire mesh shall be used to reinforce coatings of specials, For larger diameter flanges where it is i�racticable to use a ceme.nt mortar coating, and where directed by the �hgineer, two (2) heavy c�ats of Amercoat No. 79 as manufactured by the Amerc�t ��ration, or approved equal, may be used. Amercoat No. 79 shall be appl_-ed in accordance with the manufacturer's reco�ndations. 6.3.10 DII�IVII2Y: ' 6.3.10.1 PACKING: The pipe shall be prepared for shi�nt to pernut acceptance by the carrier for transportation which will afford maxim�un protection from norn�al hazard of transportation and allvw pipe to reach project site in an undamaqed condition. Pipe damaqed in Shi�ent shall _ not be delivered to the project site unless such damaged pipe is Properly repaired and appraved by the �gineer. 6.3.10.2 i�?ARKING FOR IDENTIFICATIpN; EaCh lp_nqth of pipe and eaCh fitting shall have plainly marked on eithe�. �e �11 or spigot end, the class, for which it is designated, the date of manufacture, and the identification n�:iber as shawn on the Shop Drawinqs. All beveled pipe shall be maz-]ced with the amount of bevel. 6.3.10.3 POINT OF DELIVII�y; It is desired that pipe be hauled direct� from pip� plant to the right-of-way and sttvng along pipe line route, thus avoiding rehandling of pipe and the possibility of da�r�ge thereto, Where necessary, pipe may be unloaded at access points alor.g the route, and brought to the trench side by approved methods; haaever, the Contractor shall be responsible for seeing that pipe is undamaged at the time of laying, 6.4 NLISCFr,r.��oUs: 6.4.1 SHOP DRAW111GS; Based on plan-profile sheets which have been prepared by the glgineer� the pipe manufacturer shall furnish shop drac�ings of all pi�e and fittings which are to be fabricated. Shop drawings shall include a schematic location-profile and a tabulated layout schedule, both of which shall be appropriately referenced to the stationing of the proposed pipe line as shewn on the plan-profile 6-3 / : '..: ::: . :.. . . . .�.. -..�>.:, . y .:... k.�1 �! � � �i./.�� .�.�.:..r .L•f ."i[i,y.�fi' . . .. . . . . . � ._.. .. .. ,... . . . -.��.;''-. . ... ,. ... . . .� . ' .. . . _. _ . . ... .. . ..._.. . . . . .. .... �'�. ... .�� ' . . sheets. Shop drawings shall be subject to approval of the �gineer and fabrication of pipe and fittings shall not be c�nded until such drawings have been approved by the glqineer, gix �pies of approved drawings shall be submitted to the E�gineer. 6.4.2 PIPE LAYIrJG TEC�IlVICIAt:: The services of a pipe laying techni.cian to be present during all pipe laying will not be required as a part of this Contract; hawever, a factory trained t�echnician shall be made available for pexiodic assistance as required by the pwner, 6.4.3 L1�BORATORY INSPECTION: The City reserves the right t�o retain the services of an independent testing laboratory to perform tests and inspections as described in Section 1.8 of � Stand�rd C303-78. If the Owner elects to obtain the services of the independent testing laboratory, for assurance of quality control, the City will pay for the services. 6.4.4 AF�'IDAV1'I' OF COMPLIANCE: The Contractor shall furnish to the O�mer three copies of an affidavit fr� the pipe manufacturer that the pipe, specials, fittings, etc. , including materials, co�ly with all applicable provisions of the Standards and Specifications. -- IIVD OF I'l�i 6-4 � . ,.. ,: . .. _, . -. ,.�� - _ I'�1 7 - INSTALLING CONCREZ� CyI,II�7pER PZpE 7.1 DESCRIP'1�ION: Concrete cylinder pipe, fittings, specials and valves az'e to be installed at locations shavn on the plans and specified in these Contract Doctm�ents, Unless otherwise indicated, pipe in trenches shall be laid to the qrade sha•m or an even grade frc� point to point for which elevations are furnished. Attention is called to the fact that the F�gineer r,,rill set grades for pipe laying at 100-foot intervals as specified under "Cover - Over Top of Pipe Barrel". hll of the requiremPnts of the sgecifications under section, "Excavation and Backfill", govern for the excavation and backfilli.ng of tr�nches for laying concrete cylinder pipe, fittings and specials. 7•2 PIPE HANDLING: Pipe, fittings, valves and other accessories shall be hauled to and distributed at the site of the project by the Contractor; they shall at all times be handled with r.�.� to avoid damage. In loading and unloading, they shall be lifted by hoists or cranes as specified below, or rolled on skidways in such n�nner as to avoid shock. Under no circtunst�nces shall they be dropped, pipe handled on sideways must not be skidded or rolled against pipe already on the ground. Pipe shall be placed on the site of the work parallel to • the trench aligni:�ent and with bell ends facing the direction in which the work will proceed, unless otherwise directed, Under no circim�stances shall the pipe remain on the ditch site for a length of time exceedinq sixty ((p) days. �e �� 11 be cc�nputed from the time the pipe was removed frcan the final, cure at the r:�anufacturing plant to the day it is actually laid in the ditch and backfilled. If in the opinion of the �hgineer the pipe has been proFerly protected, the E�qineex- may at his option ext.end the tit� stipulated above. The Contractor shall carefully observe the pipe for cracking and checking of the inside lininq and should cracking occur in the ,insi3e lin1-ng fY:e Contractor shall take inur�diate steps to protect the pipe. Any joint of pipe that has shrinkage cracks with a maxinn� �„�idth of thi.rty mils (.030) in the inside lining shall be repaired by the pipe manufacturer by approved methods, If in the opiniopn of the F�gineer the pipe is not suitable for repair, then the pipe shall be rejected and removed frcan the project site. Proper implen�ents, tools, equipment and facilities shall be prcvided and used by the Contractor for the safe and convenient prosecution of t�:e work. All pipe, fittings, sgecials, valves, etc. , shall be lowered 7-1 .�a � ..�.. .. _... ._ . . . . .. .. . :. _ .... . . . .:.... . ..... -.,�. � ._... ........ �� ...:�- �.�� -- . . . . . .. ... . �. . ,,. .._�..:�- - � . ...; . .-;.: ' .-- '_ .:.-.:,�.. ..,'..� .t..:: into the trench by means of a "side boom" crane and other suit�ble machines and not to be rolled or dumped into the trench. The "side boam", crane, etc. , shall be a sufficient size for handling the pipe, shall lift and laaer the pipe at a slaw rate of speed, and shall be capable of stopping the l.ifting operation at any point without producing a shock or othezwise jerking or vibrating the pipe. The hoisting cable pipe clar� shall be connected to the pipe in such a mannex. to prevent damage to the coating. The method of connection shall be subject to the Engineer's appro�ral. Before lawering into the trench, each joint of pipe shall be inspected and any unsound or damaged pipe shall be . rejected. . , The pipe shall be kept clean during the laying operation and free of all sticks, dirt, and trash, and at the close of each operating day the open end of the pipe shall be efiectively sealed against the entrance of all objects and especially water. No pipe shall be laid in water, except in an err�ergency and then only upon perniission of the Ehgineer. 7.3 PIPE JOINTING - (��r•RAT.• �fore laying each joint of pipe, the bell and spigot rings shall be thoroughly cleaned by brushing and wiping. If any damage to the protective coating on the metal has occurred, it will be required of the Contractor to repair such d�-unage before the pipe is laid. The danaged areas shall be thoroughly cleaned and inarediately follawing the cleaning, the metal shall be painted with the same material used originally in the manufacture of the pipe. Sections of pipe shall be tightly fitted together and care shall be e};ercised to secure true alignrcent and grade. Where piFe is beir.g laid the gasket shall be placed on the spigot ring and i-he spigot end of the pipe shall then be entered into the bell of the adjoining pipe and forced into position. The gasket and the inside surface of the bell shall be lubricated with an approved lubricant (flax soap) which will . facilitate the teiescoping of the joint. The inside joint recess between ends of the pipe sections shall have a maxiirnan opening of three quarters (3/4") inch and minit?nun of one quarter {4��) ir.ch. No "blocking up" of pipe or joints will be permitted. , _ 7.4 F�t*r'F'RTOR JOINT: The exterior jo.;nt sha.11 be made by placing a buriap _ joint wrapper around the pipe which will be held in place by means of two metal straps. The burlap wrapper shall be seven (7") incnes wide and he�mled on each side. The burlap cloth shall be of such length that __ it will encircle the pipe, "leaving enough opening between the ends to allaw the mortar to be Fcured inside the wrapper. The straps shall be of sufficient length to encircle the pipe and securely fasten the wrapper to the joint. The burlap wrappers shall be similar and equal to those manufactured by Mar-mac Manufacturng Ccxr�any. 7-2 -•- .<... ... . . _� . . - • . .. - -� -� :., ... -:,. , _ The grout used for pouring the joint shali consist of one part Portland Ce�nt, (AS�I Spec. C-150, Z� I) to tc,io paz-ts of clean, fine, sharp (plaster) sand, (conforming to p,STM S�ecification C-144) and mixed to the consistency of thick cream. The joint shall be filled with this grout from one side in one continuous operation until the qrout has flaaed entirely around the pipe. During the filling of the joint, it shall be rodded with flexi.ble wire to settle the grout. 7.5 INTII2IOR JOINTS - lg INC�S ANp pVER � D�ig,�: �n o�rq�letion of backfilling of the pipe trench, the inside joint recess shall be filled with a stiff c�nt mortar consisting of one part of c�nt tA twc� parts of sand by a qualified worl�n workinq inside the pipe. ' Cem.ent shall be �pe II or � III �,�� fication that the cement shall contain not more than five (5�) percent tricalcitmi aluminate Ca3(A1 p3)2, C�7t shall cc�ly with AS�1 Specification C-150 and sand shail confonn to S�I Specification C-144. P��or to the placir.g of m�rtar, anv clirt� or trash which has collected �-_ �.e joint shall be cleaned out and the concrete surface of the joint space shall be r.ioistened by spraying or brushing with a wet.brush, The sti,fi r��. shall be ramred or packed into the joint space and extre�me care shall be taken to insure that no voids remain in the joint space. After the joint has been filled, the surfaces of the joint shall be leveled with the interior surfaces of the pipe by trcwelinq or brushing. . Careful inspection shall be made of every joint to ,insure a smooth continuous interior surface. The interior of the pipe shall be thoroughly cleaned and all obstructions rem�ved. Follcwing cor�letion of pige line progressively or in sections, including co�letion of inside joints and insFections, isofar as mi.ght be possible or practicable, the line shall be kept filled with water. 7•6 IN�'ERIOR JOTiV'I'S - 16 I.r;CHES p,Np LESS IN DIA�*�: �e �o�t shall be made by "buttering" the }�eil of the pipe ��ith a stiff cement mort�.r � consisting of one part of cement to two parts of sand. After the spigot has been pushed into place, the joint shali be snr.�othly and neatly finished by pulling a "rat" through the pipe. Cement shall c�ly with ASTM Specification C-150, Z�pe II or the cement shall contain not m�re thar��V1f ell5gl� �e m�dification that aluminate Ca3(A1 p3)2, Sand shall confom to AS'Il��S Specif�ation=�144. Prior to the placing of mortar, any dirt or trash which has collected in the joint of pipe shall be cleaned out and the concrete surfaces of t1:e joint space shall be m�istened by brushuzg with a wet bnzsn. An arr�unt ' of mortar slightl_y in excess of the amount required to fill the joint space shall be applied to the bell. 7-3 --,..�,.�-- Careful inspection shall be made of the joints to insure a snx�oth continuous interior surface. Occasionally the Contractor will be required to rerr.�ve a c�leted joint for inspect,ion. The interior of the pipe shall be thoroughly cleaned and all obstructions remaved. Follawing co�letion of pipe line progressively or in sections, including c�letion of inside joints and inspection, insofar as might be possible or practicable, the line shall be kept filled with water. 7.7 PRCII�CTION OF EYPOSID D�AL: All exposed ferrous metal shall be protected by a minim�un of one (1") inch coating of portland cement m�rtar consisti.ng of one part cement and two parts sand_ E�posed surtaces such as, but not limited to, flanges, bolts, caulked joints, threaded outlets, closures, etc. , shall be protected in this manner. Where necessary, coating shall be reinforced with galvaniz�d wise mesh. The surface receiving a cem.ent m�rtar coatinq shall be thoroughly cleaned and wetted with water just prior to placing the cement mortar coating, After placing, care shall be taken to prevent cemP�t mortar frcm cizying out too rapidly by covering with damp earth or burlap. Cement mortar coating shall not be applied during freezing weather. For large diameter flanges where it is impracticable to use a cement mortar coating, and where directed by the �gineer, two (2) coats of "A�rcoat No. 79", as manufactured by the Amercoat Corporation, or . approved eqt:al, may be used. The coating shall be applied in accordance with the r�anufacturer's recarYrendations. �•g PA�: �cessive patching of lirsng or coating will not be per.nitted. Patching of lining or coating will be allc�wed where area to be repaired does not exceed 100 square inches and has no c�nsians greater than 12 inches. In general,, there shall not be m4re than one patch on either the lini.ng or the coating of any one joint of pipe. Wherever necess�sy to patch the pipe, patch shall be made with a mortzs of one part portland cement and two parts clean, sharp sand; all measurements to be of weight. Pipe thus patched shall not be installed until the patch has been prcperly and adequately cured arad unless approved for laying by the pipe manufacturer's insL.�ector and by the E7�gineer. 7.9 PIPE LAYITIG `i�CHNICIAN: The services of a pipe laying technician to be present during all pipe laying will not be required on this project; haaever, a factory trained tec'ruiician shall be made avaiiable for periodic assistance as required by the City. 7-4 r - __.. .. .. . . _,. . . . , ,.__.... ._...._.. �v..:.�•s.�...,nq,+, --- . ?.10 II•�IDl�r: Unless otherwise noted herein, all concrete cylinder pipe shall be placed on granular �nbe�nt material, below spring-line. The �nt matexial shall be as specified in It� 15 and s}�z on the plans. _ - . - EI�ID OF ITII�I r 7-5 � .� , ..: ..,. ..- ....: �. . , .,.:e ......i, ,.,, _t , .., , : . ,..:-. ;:_. . :..�,' . I'1�M 8 - ASBESTOS - CgiIIVT PIPE AND FITI'Il�tC',S 8.1 GIIVERAL: Asbestos-cement piFe for water distri.bution systems, shall contorm to ASTM Specifications C 296-72, or AWG�3 Standard C 400, latest revision, except as noted herein. Fittings and specials for asbestos-c�r�nt pipe shall be cast iron conforming with ASA specification A21.10 and/or AWWA Specification C110 and C100, as applicable; except, fitting ends that are to receive asbestos-cement pipe shall be designed for same type joints as the asbestos-c�nent pipe joints. 8.2 ASBES�S-CII�1T PIPE: Pipe shall be designed to withstand a working • pressure of 150 psi for the water distribution line. Pipe shall be zurnished with standard n�ninal lengths of thirteen (13') feet. Not less than 95 percent of the pipe furnished shall be within plus or mi.nus one inch of the specified nominal length and the remaining 5 percent shall be not rrore than six feet six inches (6'-6") less than the nomi.nal length. Couplings shall be of the standard design of the manufacturer and shall provide tight joints when subjected to two and one-half (2z) tim�s the working pressure designation of the pipe. One coupling, suitable for the particular size and class of pipe with which it is used, shall be furnished with each length of pipe. CoupLings shall each oca�rise one approved type sleeve and tw�o rubber gaskets. Gaskets shall�be of a _ properly vulcanized rubber �ound, unifom�ly smooth and round and free of porosity, pitting or other i�erfections and shall conform to ASTM Specification Designation D 1896, latest revision. Pipe and couplings shall be st.airgx� so as to shaw the design working pressure. Pipe and couplings shall be as manufactured by Jol�uls-i�lanville, Certainteed, or approved equal. Pipe shall be listed as approved by Undenvriters' Lal�oratories, Ir.c. 8.3 PIPE FITTINGS FOR A-C PIPE: It shall be the Contsactor`s , responsiblity to furnish and install fittings suitable for proper jointing and the ptai�oses intended. Fittings shall be designed for not less than same working pressures as tY�.e pipe. _ Where gate valves are to be installed in the line, they shall have mechanical joint hubs. Adapters shall be used for mechanical joir.t valves larger than 8 inch size. __ 8.4 SERVICE TAPS: The Contractor shall furnish and install double-strap service taps as requested by the O�mer, with brass corporation stop similar and equal to Mueller-H-15000 or H-15025. 8.5 PIPE HANDLING: Asbestos-cement pipe, cast iron fittings, valves and other accessories shall be hauled to, and distributed at, the site ot the projeci� and shall at all times be handled with care to avoid dar�ace. In loading and unlcading, the pipe shall be lifted by joists or cranes, as specified belaw, or rolled on skidways, in such a manner so as to 8-1 _ , - � ;� /.. ::_. ,. - . . _, ., .. . ... . . . . . . . . . . . . . .. . . �.. . . . ._ , : .. . . �_ .�' �5.�' . . .° ''+ '4�. �''. � . . . . ......_.. . . . . . . _- . � _. . . .... .,o. avoid shock. Under no circim.stances shall the pipe be c1r handled on skidways must not be kidded or rolled a ainst �� Pl� the grour.d. Pi g PiPe already on pe shall be placed on the site of the work paralle,l, with the trench alignment. ' ' Proper iir�l�nents, tools equipment and facilities shall be provided and i used by the Contractor for the safe and convenient prose�.�� of the work. A11 pipe, fittings, valves, etc. , sha1.1 be lawpxed into the , trench by means of a "side boom", crane and other suitable machines and not rolled or d�ed into the trenc�. T� ��side boom", crane, etc. , � shall be of sufficient size for handlin the P1Pe �la� shall be connected to the lg P1�' The hoisting cabZe p'pe in such a manner as to prevent damage. The method of connection shall be subject to the City Ehgineer's approval. Before lawering into the trench, each joint of pipe shall be inspected and any unsound or c7amaged pipe shail. be rejected. The pipe shall be kept clean during the laying operat,1,on and free of all sticks, d;r-r, trash, and at the close of each operatinq d�y �e �� d of the pipe shall be effectively sealed agaanst the entrance of alI objects and especially rmzd and water, No pipe shall be laid in water, or when the trench conditions ar the weather in unsuitable for such work, except in an emergenc�, and then only with permission of the . Engineer. Al1 pipe shall be laid accurately to establish lines and grades, with valves and fittir.gs at the required location, and with joints properly made. Line and grade stakes will be provided as needed. ' ' 8.6 PIPE LAYNG AND JOINTING: Before layi.ng each joint of Pipe, the �, ends shall be thoroughly cleaned by brushinq and wiping, The pipe , shall be laid on 4 inches o= granular ��nt r,,ri� �Pl�g holes ' provided. Pipe shall not be suPPo�� by couplin s. After i , installed and joints ccm�leted, the anular g P Pe is ', be ins'r_alled upward to not less than�ix (6��)e�'ec�r,enabove �alo fshall , . P pipe. Unless otherwise indicated, pipe in trenches shall be laid on an even grade from point to point and as reco�..nded by the pipe rcanufacturer. All of the requiren�nts of approved specifications shall govern for the excavation of treriches for laying asbestos-cem�zt pipe, backfilling, etc. 8.7 CONCR.,TTE BLOCKIfdG: Concrete blocking shall be placed at all bevels, tees, crosses, plugs, fire hydrants, etc. The concrete shall have a 28-day co�ressive strength of not less than 2,000 pounds per square inch ar:c1 shall be as specified in Section for Concrete. The blockir.q shall be placed to rest firm undisturbed foundation of the trench bottom. Concrete shall be installed in such a r.�anner not to interfere cvith the repairing of the joint. The bea.ring area for concrete blocking shall be based on not less than 150 psi against the undisturbed vertical face of the trench wall, and not less than that shcw�m on the plans. E��ID OF IT�3•1 8-2 � °-... _ ... ...:... _ .....,�..,:.. - sY.,r..,� _..,: _:._...» ..�.:.�..�.� -: :.._..:._,...�..:.�- ITE24 9 - GATE VALUES AND VALUE Il�TSTALI�TION 9.1 GF�vERAL: Gate valves shall be double disc, parallel seat, internal wedging type with cast ison body and bronze m�untings. Valves 3" to 12" in size with a working pressure of 175 pounds per square inch and valves over 12" in size with a w�rking pressure of 150 pounds per sguare inch shall be in strict acc.ordance with the American Water Works Association Standard for "Gate Valves for Water and Other Liquids", C500, latest revision. Gate valves which have a working pressure greater than specified above shall be in accordance with all requirements of AV�, Specifications. Flanges for valves shall be drilled to match connecting flanges. All flanges shall conform to the latest Standard Specification of the American National Standards Institute. Flanges shall be Class 125. Gate valves shall be b�iieller No. A-2380 or Kennedy AWWA Gate Valves. Distribution syst�n gate valves for pipe, other than concrete pressure pipe, shall have mechanical joint ends, unless othenaise approved by the City in writing. All gate valves shall be non-rising stem and shall turn counter-cicckwise to open. Valves shall have a wrench nut for oFeration unless otherwise specified. Valves 16" and larger which are to be installed in a horizontal position, shall have tracks, rollers and scrapers to carry the weight of the gates throughout their entixe length of travel. Rollers and scrapers shall be solid bronze and the tracks shall be solid bronze on hard babbitt. All manuai operated valves above si;{teen inches (16") in size and larger shall be provided with gearing, with an extended gear case, with cover plates and with a bypass valve. All gate valves shall be installed in a vertical position unless otherwise shawn on the plans. 9.2 VALUE BOXES FOR VALUES: Cast iron valve boxes shall be firr,ily supported and maintained centered and plumb over the wrench nut of the gate valve, with box cover flush with the surface of the ground, or at such other level as may be directed. For each nut-operated gate valve, the Contractor shall furnish and install necessary valve boxes. Valve boxes shall be a three-piece cast iron valve box of the extension type and shall be similar and equal to Trinity Valley Iron & Steel Co�any, Pattern No. 4625. Extension shall be provided as required. Valve boxes shall have poured concrete support 4�� x 2' x 2' placed at finish surface. The C�ntractor shall be responsible for .adjusting the valve boxes to the proper length to conform to the ground or pavement surface. 9.3 H11I�IDL�dG AND INSTALLING GATE VALUES: Valves shall be carefully handled and lawered into position by mechanical equipr,lent in such a manner as to prevent damage to any part of the valves. The valve shall be placed in the proper position with stem tnzly vertical or horizontal as the case may be, and shall be securely held until ali connections have been tnade. The Contractor sr.all fiirnish all bolts and gaskets for flanged connections and M.J. connections. 9-1 �,, . .. �,:..� ,;,. .. . . ...�. � _.... ,.. . .. ,... , _ k J ,:R � .. . . .� . .;a . ,.� r '•=s ->:,:;, -�.,1,,.:- . � �' � . - - ., __ ' � ' After the valve box is in place, backfill materials shall be firmly ta�ed around the outside so as tc� hold the }.x�x in its pmp�. position. � The top of the box shall be adjusted to the proper elevation and �, securely held in place. ' 9.4 BI,OCECING UNpg2 GATE VAI,VE: All qate valves which are buried shall rest on ooncrete pad. Pad shall extend for the full width of the trench and from back of hub to back of hub (or flange) . Care shall be taken to not interfere with the jointinq, Concrete shall be of 1500 psi quality, ' E[�ID OF I'I'E�1 r —_ 9-2 ';} �/ ITFT�1 10 - FIRE HYDRANTS 10.1 GIIJER�L: Fire hydrants shall conform in all respects with ATnh� Standards for "Dry-Barrel Fire Hydrants", AWV�1 C502-?3, except as herein specified. Bucy shall be for four feet, measured fr�n bottom of trench to ground line or such other depths as may be required by the profile. Fire hydrants shall be either Mueller Improved A-423 or approved equal c��lying with City's standards. Hydrants shall have five and one-fourth (5;") inch miniirnun valve opening on a barrel of approximately seven inches (7") inside diameter. A bronze insert shall be utilized for seat ring. Hydrants shall have bronzed bused weep holes. Hydrants sha.11 be designed for six inch (6") pipe connection to street main, and shall be equipped with Lwo 22" hose nozzles (National Standard Thread) , and one 4" 4-484 Mueller steamer nozzles. Hydrants shall have 1" square, operating nuts, and shall turn counterclockwise to open. Hydrants shall be of the dry top type, with "O"-ring packing, and shall have a co�ression type main valve that closes with pressure. 10.2 INSTALLATION: The hydrants shall be instailed at the location directed by the E�gineer. Unless approved by the City �ngineer, fire hydrants shall have maximum spacings of 500 feet in residential areas ar�d 300 feet in c�rcial or mercantile areas. They sha.11 be set truly vertical and securely braced with concrete blocks until self-standing, and shall be surrounded with a miniirnun of seven (7) cubic feet of washed gravel or stone. Installation details are to be shown on the Plans. The fire hydrants shall be installed with a gate valve between main line and fire hydrant. T'he main line fitting shall have flanged outlet and the isolating gate valve shall have .flange and mechanical joint ends. IIVD OF ITEM 10-1 ;:�. - .. _ . ..., . ., , ,.. .. ;. ,;, , _. , _._ � _ ,: .., , ....� , , . _; . . . _.,.._..� . , . . . _ ITEht 11 - PUC PIPE SEWERS 11 •1 • GENERAL: Unless otherwise approved by the City in writing, all sewer pipe 4-inch size through 15-inch size shall be PVC pipe as herein specified. This specification designates requirements for unplasticized polyvinylchloride (PVC) Plastic Gravity sewer pipe with integral wall bell and spigot joints for the conveyance of domestic sewage. 11 .2 MATERIALS: Pipe and fittings shall meet the extra strength re- qu�rements of ASTM Specification D3034, SOR 35. (SDR is arrived at by dividing the pipe O.D. by the wall thickness). 11�. 3 JOINTS: Joints for the PUC Pipe and fittings shall be compression rubber gasket joints. The. bell shall consist of an integral wall section with a solid cross section rubber ring factory assembled, securely locked in place to prevent displacement. 11 .4 FITTINGS: Fittings and accessories shall be manufactu:�ed and fur- nished by the pipe supplier or approved equa] and have bell and/or spigot configuration identical to that of the pipe. , � 11 .5 STIFFNESS: Minimum pipe stiffness at 5q deflection shall be 46 psi for all sizes when calculated in accordance with ASTM D-2412. 11 .6 DIf�fENSIONS: Pipe Size Outside Diameter Min. LJa11 Thickness 4�� 4.215" + 0.007 6�� 6.274" + p.009 0.125" $�� 8.400" + 0.010 0.180" 10" 10.500" + 0. 013 �•240" �2�� 12. 500" + 0.016 0.300" . 15" 15.3Q0" + 0.021 0.360" — 0.440" 11 . 7 RECEIVING, STORAGE AND HANOLING: Care shall be used in unloading , and handling to avoid cuts an� abras�ons to the pipe. PVC pipe and , fittings must be stored to be protected from prolonged heat or direct , '� sunlight. Any protective covering may be used which will -not absorb much heat and which will reflect direct rays of the sun. VentiTation should be provided with any type of cover used. 11 .8 LAYIt�G PIPE: Pipe shall be laid in accordance with the manufac- turer's instructions. This includes making sure that the bell and spigot is clean, and that the spigot is inserted the prescribed amount to allow for expansion and contraction due to temperature change. Joint lubricant shall be used as recommended. 11 -1 M�':3•� - �i_' . . . _ ' . . .. .� '� '�'?�Y..1i L f.; V.,,) .i'1h T',. 'i�f ..d':K E Mf1:::,? i, t. . , . . . . . . ._ . . . . .. . . � . . . . � . _.J.. . :l. . .. ... . . . . . .. . ..M. .. � . . 11.9 MANfiOLE CONNECTIONS: Where PVC pipe extends through a rigid manhole wall, it must be recognized that concrete and mortar will not bond to the PVC pipe, and as a result some fonn of special wall fitti.ng inust be provided as leakage around the pipe through the r.�.nhole wall will not be acceptable. A ring water stcp as an integral part of the wall fitting is one acceptable riethod. where a manhole drop assembly is constructed of PVC pipe, the c'sop piping shall be encased in concrete outside the manhole. � 11.10 INFILTRATION TES'T: The cong�leted sewer line will be tested for leakage by hydrostatic or air test as specified in Item 14 of these specifications. 11.11 'I�CH BACKF'ILL: Trench and backfill shall �ly with the separate section contained in these doct�nts. In general, all PVC sewer shall be co�letely encased in Z�pe 1 or 'I'ype 2 �e�rent material, as specified in Item 14, from 4" under the pipe to 6" over the top of the pipe. In such cases where the pipe will cross under a future pavement area, the entire trench shall be backfilled with granular material up to wi.thin 12" of the natural ground surface. 11.12 D�'LD�rION ALLOWAidCE FOR INSTALLID PIPE: After the pipe has been co�letely installed ar;d backfilled, a mandrel shall be pulled through the entire li.ne to determine whether the maximt�n allcwable Sa deflection has been exceeded. The diameter of the mandrel shall be 50 less t.han the inside diameter of the sewer line. In such cases where the mandrel may hang due to excess deflection, the pipe shall be uncovered at this point and the conditions shall be corrected. Correction may be by reworking the embedme.nt and backfill, or by replacing that section of pi�e. This portion of the pipe shall again be backfilled, and the mandrel pulled through again, and this process repeated until the pipe is clear of all obstructions. , 11.13 PLUGS: Open ends of pipe shall be effectively plugged any time pipe laying is stopped. Stub-outs from mar.holes for future connections shall be plugged. IIVD OF Ii�'M 11-2 �. ITII�i 12 - VITR.�IID CLAY PIPE SEWEFiS 12.1 GE�]ERAL: Unless otherwise approved }�, the City, all pipe for sec.�ers larger than 15 inches diameter shall be of best 1 clay sewer pipe as herinafter specified. pi 9�1 tY vitrified pipe plant by a qualified independent testing Iaboratorytinta�ccordance with ASTM 301. Results of the tests shall be reported to the Ehgineer in writing before shi�nent of the pipe. Cost of the testing sha.11 be included in the price bid for furnishinq anci installing the pipe. 12.2 SPECIFICATIONS FOR VITR�IID CZAY PIPE Ar,r?D FITTIlVGS: ,�,11 vitrified clay sewer pipe and fittings shall be niunber one ` straight lines and circles with standard tolerances�arid�sh�l in all respects ccm�ly with the Specifications of the American Society of Testir:g riaterials Iatest designation C-700, �ra g�� cept as modified herein. All pipe and specials shall be of best cruality vitrified clav and shall , be of the hub and spigot pattern. All pipe and,�specials shail be sound and thoroughly burned throughout, s�ot1-i on the inside and free from , blisters, ltmg�s or flakes which are greater than one-sixth (1/6) inch of , the thiclmess of the pipe or one-eighth (1/8) inch, whichever is the , least. The pipe shall be free frcgn fire cracks of any }cind extending , , through the sheil. The pipe shall be well fornted and straight. The , pipe shall have a clear ring when tapped �,alth a h�nmer. The bells and , spigot shall be as near to true circles as can be manufactured in tolerances as permitted by A.S.T.M. It shall be the pipe manufacturer's responsibility to furnish pipe that the spigot end of one joint will have a miniirnun of 3/8" clearance around the pipe and between the bell of anotY,,er joint when place together. The pipe shall not be turned more than_4 of a round in one disection only to achieve this mininnmi clearance. - ', The outside diameter of the barrel may be greater th�-�ri the maxu;;�n ' figures stated in Table 20 of ASTM Pipe Spe�ifications, provided the � , other dir;ensions are varied accordingly with the specification tolerances and the revision of the diameter of the pipe shall be carried the entire length af the project. Barely meeting the requiren�nts of these Specifications wi11 not be considerec� as acceptable. It is intended tha� these Specifications provide a mir.ir;nun quality which will be accepta.b.Ie and the supplier will be e.�cted to exceed these requirements. While the ASTM Specificaticns perm.it the rejection of pipe having fractures, or cracks passing through t�:e barrel or socket, except that a single crack at the spigot end of the pipe not ex.ceeding 750 of the depth of the socket or a single fracture in the socket not exceeding 3 inches around the circlmtiference nor 2 inches lengtllwise may be perniitted, it is not the intent of these Specifications to perr.ut any appreciaY�le quantity of pipt �eet�q the herein described permissible fractures. The c�t;antity of fractured pige to b� accepted for this project shall be at the discretion of the R�ner. ps an e:cception to AS`i��i Specifications, the Owner reserves the right to mar)c �ait.h appropriate marking pencil all pipe rejected due to failure to corr�ly witti these specifications. The supplier will be expected to load and retu��n this rejected pipe to their stockyards im�diately. ',, 12-1 _ .: . .., . _ _ . . ,. _ .. � , _ . .;, , . ... _ . ,_ . _;, _ � . , : . , . .. _. .; ,, . ... � . :.:d..,.,•.;..,�..� ._ ... _..,._�_._ ... , - . _ . _>, _ 12.3 CLASSES: Unless othexwise approved in writing by the Owner, all pipe shall be e�•tra strength class. 12.4 JOINTS: The pipe shall have precast compression type joints, such as Dickey Joints, manufactured by W.S. Dicl:ey Clay Manufacturing Company or Delta Steel, manufactured by Can-Tex Industries, Inc. , or approved equal. Joints shall be a type approved by the City Ehgineer in writinq, 12.5 LAYING CLAY SEWER PIPE: Upon the required embedment, the pipe shall be laid to the line and grade shcx�m on the plans. The Ehgineer will provide off-set stakes at 100 foot intervals, and will provide the Contractor with a cut sheet shawing cut fr�► top of hub stake to flaw line of pipe. Contractor shall set the pipe to grade and alignn�nt using laser equipment and shall carefully check subgrade of trench, and flaw line of pipe for proper grade and alignment. The pipe shall not vazy more than 1/10 foot fran true line and not r�re than 2/100 frc8n � theoretical grade. Prior to laying, the pipe shall be carefully inspected for c�liance with the specifications and pipe which is cracked or broken or that does not fully comply with the specifications shall be rejected, and ir,�nediately removed from the site of the work by the Contractor. 12.6 EXFILTRATION: All pipe shall be tested for leakage as specified under a separate item in these specifications, using either -hydrostatic or pneurnatic test. 12.7 OBSTRUCTION TEST: After the pipe has been laid and backfilled, a manclrel or ball shall be pulled through the line or insure there are no obstructions. The diameter size of the mandrel or ball shall be 5g less than the �nside diameter of the pipe. 12.8 CLOSURES: �tao type of end closures are required in the construction of the Project. One is a teni�orary closure for use during construction and the other is a permanent closure for sewers which do not terr,tinate in manholes, or where there are stub-outs of manholes. IIVD OF ITEhi 12-2 � _,, .:�. _ . ... .,.., . .., ,,:...-.:� :.<:.,-: _::_,�,::�.; , Ii'1�3�I 13 - MANHOT,FS � �j,�S 13.1 GIIVERAL: Manholes shall be constructed at locations shawn on the plans or as directed by the EYigineer. Mantioles may be c�nstructed using cast-in-place ccncrete or precast concrete at the option of the contractor and the approval of the Engineer, The Contractor's attention is called to the fact that s�ne manhole tops are to be above ground and some manhole tops, installed ahead of land development, may be below the finished ground surface. As applicable the details shawn on the plans shall apply. All manhole bases, or footings, shall be 3,000 psi class concrete. 13.2 CONCRETE NIANHOT;FS, Pg�T: pr�st, reinforced concrete n�nholes shall be as fabricatect by Gifford-Hi11 or approved equal, Joints in the precast m3nhole sections shall be sealed against I.eakage with prefo..Yr,�c? , plastic material "Ram-Nek", or other approved pern�anently �=:stic 4�aterseal. Flhere the depth of r.�nhole is suitable for precast concrete, ', ', the Owner will accept this type oi construction,as equal t.o the brick ' , manhole. ' Precast reinforced concrete shapes shall be furnished for sanitary sewer manhole construction in the fonn of risers, concentric cones, and grade rings. Precast reinforced concrete manhole sections shall be of the bell and spigot or tongue and groove design meetinq the requinrnnts of AS�s C-478 having a wall thicJ�ess equal to that of AS�I C-76 wall "B". Joints may be preforn�ed O-Ring rubber qasket conformiuig to the requirements of ASZtii C-443. Risers shall be in star:dard lengths of 1 through 6 feet in incrern��ts of one foot. Concrete used in these r,ti.-�nhole sections shall be at least 40s of lirc�stene aggrsgate. Ntanl:ole steps shall be installed by the pipe manufacturer where attention shall be given to a safe structural tie. Vertical centerline of steps shall be marked on the outside of each manhole section. Steps shall be non-corrosive material as shawn belcx,,� and on plans. . 13.3 i�IONOLITHIC MANHOLES: Monolithic cor.crete manholes shall be poured on the job site using specially designed, re-usable fornis. N�-�nholes shall be poured from 3000# concrete to provide a forn;�d wall thic:mess of at least 6 �nches. Monolithic manlioles shall be substantially watertight when co�leted. Aggregate shall be at least 40� liriestone in the concrete. 13.4 r-L�,I�,Tf:CLE R1�7GS AND COVI�ZS: 1�-inhole rings and covers shall be madE or gray ircn castings, �a.S`1'NI A-48, and shall conforr,l to Class No. 30. Tl:e general d'.uaensional reruirements ror the Standard manhole ring and ccver shall be as follows: 13-1 � � ti�o.:�- �s=i,C �„�� .H�.. -., � �.. . _..,. :� 1 S- ..v... ..`..�^Z '`.�"„i x .... .�, . .. ..�, . , � : ..9.. .. . .. ..� .... . �..� .. .�-.;� .� .. . . Diameter of lid 24�� Thickness of lid at edge 1_7�g�� Clear opening in frame 22�� Zbtal depth of frame �� Depth of lid seat in frame 2�� Outside diameter of frame at bottom 32�� Width of frame flange at bott�n 4 3/4" The ring and cover sha.11 be equal to Western Iron Works, San Angelo, Stock No. 42, having a weight of 300 po�unds or the equivalent pattern produced by Trinity Valley Iron & Steel Ccx�any, McKinley Iron 6Vorks of Fort Worth, Texas. Lids shall be interchangeable, and adaptable to all other rings of this pattern. The accuracy of the castings shall be such that the lid will have full bearinq on the seat ring, and will not rattle under traffic. Al1 castings shall be clean and sound, and free of blaw or sand holes and other defects. 13.5 MANHOLE STF�S: Manhole steps shall be fiberglass or metal coated with approved plastic material. Where steps are installed in precast concrete wall, they shall either be installed at pipe plant using non-shrinking grout or the project site using a non-shrink grout. 13.6 MANHOLE DROPS: It is intended that a drop manhole piping assesnble be installed in all cases where the distance between the incaminq pipe and the floor of the manhole is three feet or more. The drop assem�bly shall be encased in concr�te as shcwn on the plan. Al1 drops are to be installed outside the manhole. 13.7 STUB-OUTS AT MANHOLES: Where future connections are expected at manholes, the contractor shall furnish and install stubrout pipe and plug, or cap, as directed by the E�gineer. Where such stub-outs are to be installed, the Ehgineer will advise the Contractor as to details aheud of manhole construction. � 13.8 CLEANOUTS; It is intended to provide a cleanout at the dead ends of all sewer lines unless a manhole is provided at that point. Cleanouts shall be constructed in accordance with the details shown on the plans. 13.9 5 FT. DIA. MAt�iOLES: Where concrete precast sections are used for 5 foot diarreter manholes and conical top sections are not available, the : Owner will consider a straight side without a ccne. The top must be properly reinforced with tI.H, opening at one side. The M.H. ring must __ be set on at least two adjust�nent rings to a1Zow for future elevation adjustrr.ents. If the manhole, 5-foot diameter, is in areas that are paved, or subject to being paved, the re�nforced top shall be not less than one foot below finish giade and adjustr�ent rir.gs shall be used to bring the top of mar�zole ring flush with grade. II`,lD OF ITII'�1 13-2 .,� /;, :__ ::,.._.�: -,,.. :: : -. _ . - . .. . - - :� :w ,: -. . _ -� ^.-: _.._ _ . . ITL1�1 14 - F�ILTRATIp1V TESTg 14.1 GIIVER�L: Exfiltration test shall be perfon;�ed on aIl sew�r pipe by either a hydrostatic or a pne�natic method, as specified. 14.2 �XXF"II,TRATION TEST HYDR0.STATIC METHOD: All sewer pipe shall be so installed that the ccx�leted sewer will have a maxim�un exfiltration of 150 gallons per inch of internal diameter, per mile of pipe, per 24 hours, where the m�innmi hyclrostatic head at the centerline of the pipe does not exceed twenty-five (25) feet. In measuring the exfiltration, a ten�orary test stack to 15 feet above the top of sewer level s�all be built in the sew�r line just autside the manhole at the upper end of the new line. All open ends (sezvice lines, etc.) shall be plugged and water introduced into the test s�ack, filling the line and the stack to top level. After water has rezna�^=.: .in the line twenty-four (24) hours, the water level is again brouc�, _,.;t, to the stack top elevation. After one hour, the water level is rr��ured from the starting poirit and the quantity of leakage �o�uL,.ed, If necessary, the line shall be repaired and the test re-n.ui until the exfiltration is within the requir�rents. The test stack shall be removed upon co�letion of tests. �•7ater used in testing may be obtained at the nearest fire hydrant at the Contractor's expense. _ In lieu of the exfiltration test, the Contractor may use or be required to use an air test as specified below. ' 14.3 EXFILTRATION TEST FT�EUMATIC bIETHCD: Air test. ', 14.3.1 CC�3vvEFtAI,; Where specified, in accordance with the stipulated , requirements on the project plans or specifications, air tests shall be I'� made on sanitary sewer systems. S�ch ais tests shall be made by the . I pressure drop versus tir,�e method, 14.3.2 REqUIRQ��ITg; pn sanitar� sewer syster�s requiring air tests, the Contractor shall furnish all material, equi�nent and labor. The air gages will be dead weight tested and approved by the E,hgineer. The �gineer shall judge the results of the tests. The test shall be performed usir.g the below state equipcnent accordir.g to stated procedures. 14.3.3 E�UIPNIF.'NT: The equipm�r:t used shall meet the followir.g r,tinir,nur, requirements: (a) Pnetu;tiatic plugs shall have a sealing length equal to or greater than the diar�eter of the pipe to be inspected. 14-1 ia (b) Pneunatic plugs shall resist internal test pressures without requiring external bracing or blocking. (c) All air used shall pass through a single control panel. (d) Three individual hoses shall be used for the follc�wing connection: 1) From the control panel to pneimiatic plugs for inflation. 2) From the control panel to a sealed line for introducing the law-pressure air. 3) Frcan a sealed line to control panel for continually monitoring the air pressure rise in the sealed line. (e) Air co�ressor of adequate capacity for charging the systen. 14.3.4 PROCEDURES: All pnetunatic plugs shall be seal-tested before being used in the actual test installation. One length of pipe shall be laid on the ground ana sealed at both ends with the pnetmiatic plugs to be checked. Air shall be introduced into the plugs to 25 psi. The sealed pipe shall be pressurized to S psig. The plugs shall hold against this pressure withcut bracing and without movement of the plugs out of the pipe. -_ After a m�lole to manhole reach of pipe has been backfilled and the pneimiatic plugs have been ch�cked by the above mentioned procedure, the plugs shall be placed in the line at each manhole and inflated to 25 psig. Low pressure air shall be introduced into this sealed line until the intei-nal air pressure reaches 4 psig. Allaw at least two minutes for tY:e air ten�erature to stdbilize, adding only the amount of air required to maintain pressure. If the pipe to be tested is submerged in ground water, insert a pipe probe by borir:g or jetting into the backzill material adjacent to the center of the pipe, and deterr.tuze the pressuxe in the probe when air passes slc�wly through it. This is back pressure due to grour:d water submergence over the end cf the probe. All gauge pressure in the test should be increased by this amount. - After the stabilization period {3.5 psig of minimLun pressure in the pipe) start stop watch. Detezmi�ze ti.me in seconds that is reauired for the interr.al air pressure to reach 2.5 psig. Mininnun pezm.issible pressure holciing ti.� for runs of sir.gle pipe diameter are ind�cated in the followir.g table. Syste� tests shall be subject to �rfldification of this table which shall co:�fonn to tables and nomograph on file cvith the �gineer. Should the sanitaiy sewer syst� fail air tests, the Contractor shall find and repair the leaks and retest. On syst�ns �•�here water tests are applicable for testing manholes, water tests shall be performed on the mar��ole even though the pipe is air testeci. Cost of all material, equipr,ient, labor, etc. , required in test:sg shall be included in the price bid per foot of pipe in place. 14-2 . _.. . ., _ , _ . , - . . , , . . _. . . _ , _ . , ,,. .. � . . -. . ._.. .. .. . . 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F— c''� - O� CO t� � tJ O J � �-Z. -- � CO CD t� t0 L!') �' r-- O �, �,.y '"� �"_ r— N M � � -_ O �2 W � �' ll') ti - � F- � N ct l0 CO Ol i-- Ln I- � � �ONCOd" O (� N �� W � � r- N MM � N � � � �' d •-. �--� � O - � JI- OQ� O"� CO � COnn p O n1 �T f� r 1.27 Ql M I� r- �- O W _ '- rr- � NN M M �' . �''� O c � _ U' OO trf M O � u'� � O CO t.n c� Z � O Nt.C) � MlOQ1N dl� � M �-• z �"' .-- �- •- N N N N � f-- ..., N N � W H � � M Ll� O^ CO tn M r- p0 lp cr � ^ U.� O � �- lOt� � ,- N t� Z �"' � r- N N N W N y � O O O O O � � o� Q� � � � p� � O O W CO Cli O � � tn r� t� c� �— '_� r � W �' � � r-- r- NNMM � ctCJ �7 NO Q1CJ f� tJ M � . .. �f �Y � 1n lD I� 1� .(� G1 O r- p r'- �--- F--- � O tt� O �n O �n O L� O �n O p Q p O O O O F-- Nt1� i� O NtC) n O (�IL7f� O ltlO U'iO tnO � p r- r- .- r- N N N N (") M G� � tl� L!') lD lp � ��1D UF ITE��i 14-3 . . . . . . _ . .-.: . . ..-. -- '� ,:^�+.. . 1 � .-+�: .'T�,'_ r _"`' .,.�`� r}. :� . � .. . ., . . _ . . ....__ � . . . . . . ... ,aF. ... � ITFM 15 - PIPE IIKBIDMII�T 15.1 GIIVERAI,: A11 water, sanitary sewer and drainage pipe will be installed with granular en�edmerit, or concrete cradle or encasem�nt, as sha�m on the plans and specified herein. Granular �chnent material shall meet the require�mts for one of the three alternate types of embedment material specified herein. Whereever designated on the plan or elsewhere in the Contract Doc�m�,nts, alternate types may be lir.zited to one type, or two typ�s of granular embec�nent, 15.2 COtiCR��'E CRADI,E AND/pR F�ICASEN�VT; Where shawn on the plans or specified, or requested by the City, concrete cradle (emb�dment) or concrete encasement shall be installed. Concrete cradle and encasement shall be 1500 psi concrete r+�eting requirements of Item 3. The Contractor shall install the concrete cradle and enca.s�nent in such manner as to avoid floating the pipe, or moving the pipe out of proper position, while obtaining m�nolithic concrete section. Additional payment shall be allowed for concrete cradle and/or concrete encasement at the unit price bid with measurement allawable as shown on the pians. In the event measuren�nt allcwable is not shawn on the plans, measurement shall be based upon muzitrnun txench width allQaed and type section to be used. 15.3 CRUSHED LIP�STONE, TYPE l, ENIBIDI�7T: Crushed limestone shall consist of durable particles of crushed stone ranging in size from 3/4" to ;" with percent of wear not exceeding 35. The gradation based on ASTM D448 size 67 is as follcws: Sieve Size � By Weight Passing 1�� 100 3/4" . 90 - 100 3/8" 20 - 55 NO• 4 0 - 10 No. 8 0 - 5 , 15.4 GRZ-�VII.,, TYPE 2, II�+IBIDMENT: Gravel for embec�ient and/or encas�nt shall be washed gravel rangirig in size frcm 3/4-incl-� diameter to ;-inch diameter �r�eting the requirer.�!ent of AS'IT7 Designation C33, Gradation 67. The riaterial shall be free from clay and organic riaterial. � 15.5 PIT-RUN, TYPE 3, IIKBID2•�IT: Pit run granular er�bedm�nt material shall be free flowing sand, or mixed sand and pea gravel, free frcm __ large stones, clay and organic material. The m�aterial may �e an inferior grade of pit run or blaa sand not nornlally considered satisfactory for concrete aggregate, and may be used directlt�1� frcm pits �vithout processing, provided it complies with the qualities described herein. The material shall be such that when wet it will not fom� a mud ball or tend to cling tcgether. The material shall have 100a passir:g a one (1") inch sieve, and the plasticity index of that part_passing the 40 sieve shall not be greater th��n 2, unless �•rritten approval is obtained from the OHmer. 15-1 r : ,,. , :, . .. _ „_ ,,_ . .. . : . ,.. _ -.. , _ . � .. . . . . .::. ._ ;: N - . - --. _ .. - ; . _;� _ _... _ ... ...... .. ,�_,.� .. _.._.. - <.<...e�...�.�r_._ 15.6 APPROVAL OF IIKBIDI��IT MATF'RTAT,: �e C�ntractor shall su�anit typical sa�les of materials he proposes to use for the e�lt to the Engineer for approval. The Ehgineer's appraval must be obtained before delivering e�dment to the site. 15.7 PAYP�,i'T FOR FT4BID1�Nr; Unless otherwise specified and allawed for in the proposal items, no separate payment shall be made for elr�bec�e.nt, Payment for the pipe furnished and installed shall include eqr�be�nent as a part of the installation and materials. Where shown on ttve plans or requested by the F�qirieer� concrete cradle shall be used and shall be paid for separately and in adc�ition to � �it price bid for sewer pipe, and/or water pipe. 15.8 INSTAT�,ING II�EDl�]'I': p,fter �e �-�� t� is brc�_� to ---� elevatian and gradecl to unifonn slo " �``'`�'^" initial, or bedding, layer of e�t u� �na actor shall �nstall the than that r P grade slightly higher equired for the bottcsn of the pipe and shall scaop out recesses to receive the pipe bells. The pipe shall then be placed on the initial bedding and brought to grade by t�t�inq, F�ach pipe section shall have uniform bearinq on the embedm�-�t for the length of the pipe, except i�nediately at the joint. Where required, adjustrne�t to the pipe grade line shall be made by scraping away or filling with �nt . material. Wedging or blocking up the pipe wiZl not be perr.titted. With the pipe set fizmly on grade, the bell hoZes shall be filled and the bedding material extended upward to the p,roper elevation. Then select material from trench excavation sh�ll be addeci to complete the pipe zone backfill. The select material shall extend up�,ard to elevation 12-inches above top of pipe or 12-inches above top of �nbec�ne.nt, whichever is highest. It is the intent that the em'�c�nent be co�acted in place which may require some handwork b�, the Conts.actor. After the select material is in place, the Contraetor shall compact the select � material and �n� �t�ial by use of water jetting, The select , material frcm trench excavation shall be semewhat free frcro stiff clay and l�s, which may require sorr�e special e��orts to obtain and use as select materials in the pipe zone. . 15.9 SELEC'I' P•1ATERIAL IN plpE ZpiVE; Select material from trench excavation sr.all be �laced above e�lt, or encas�nt, materi�.l to an elevation not less than one foot above top of all types pipe. �Jhere jetting is to be perfonned, the select material shall be installed ahead of jetting the pipe zone. No additional co�ensation shall be allcwed � for selecting and installing this material in top part of pipe zone. F�v� OF ITE�q � 15-2 � �, : a.,= • , . . � ,: :. . _ , , ITII'•1 16 - PVC PIPE FOR WATER LINF,S 16.1 N]ATII2IAI.S; PVC pipe shall be Class 150 confozming to AW6� Standard C-900. Pipe shall be "Blue �rute" manufactured by Johns P�anville or approved equal. Pipe shall carry the listing of the Underwriters Laboratories and have approval for use in water distri.bution systems in Texas. �111 PVC pipe shall be encased in ��t material from 6" belaw pipe barrel to a miniirnIIn of 6" above top of pipe barrel. 16.2 PIPE HAtWLING: Pipe unloading shall be done by hand and shall not be dropped, dragged or thravn. Pipe to be left outdoors more than four months must be covered with tarps or opaque polyethylene film; no pipe may be stored outside under direct sunlight or heat in excess of four months. Pipe shall be stored on a flat surface with full bearing and stacked no more than two (2') feet high for SDR piping. Fittings shall be stored in their shipping containers and out of direct sunlight. Damaged pipe with excessive �eep scratches will be rejected. Out of round pipe which cannot be rounded by hand pressure shall not be used. 16.3 PIPE LAYING: 16.3.1 I��lERING PIPE AND ACCESSGRIES INIb TREIJCH; � 16.3.1.1 GIIVERAL: Proper impler�nts, tools, and facilities satisfactory to the E�gineer shall be utilizecl by the Contractor for the safe and efficient execution of the work. All pipe, fittings, valves, hydrants and accessories shall be carefully lowered into the trench in such manner as to prevent d�mage to pipe and fittings. Under no circumstances shall the pipe or accessories be dropped or d�ed into the trench. 16.3.1.2 INSPE�I'ION OF PIPE AND ACCESSORIES: The pipe and accesories,. shall be inspected for defects prior to lowering into trench. Any defective, dam�ged or unsound material shall be repaired or replaced as ctirected by the Ehgineer. _ 16.3.1.3 PIPE I�P'r CLEAN: All foreign matter or di�t shall be reroved from the interior ot the pipe before lowering ir.to position in the trench. Pipe shall be kept clean by means approved by the r�gineer during and atter laying. 16.3.1.4 JOINING PIPE SECTION: The sealing surface of the pipe, the bell to be joined, and the rubber ring shall be cleaned imrr�diately 16-1 .. . . . _ . . .- . .. . , . . . . .. . ' . , ° -_ .:'C}L�:+,. �� a ,._a .��n �r ;i�, :gt:t s�--+.:i.,? ,,r. . . _ . .. � __ . . _ _ ..�'. ... .. .. . . before assembly, and assembly shall be made as recam�ncied b�, the manufacturer. When pipe laying is not in progress, the open ends of installed pipe shall be closed to prevent entrance of trench water into the line. Whenever water is excluded fran the interior of the pipe. enough backfill shall be placed on the pipe to prevent floati,ng, p,ny pipe that has floated shall be removed from the trench and the bedding restored. No pipe shall be laid when tlze trench conditions or the weather are unsuitable for proper installation as determined by the E7igineer. 16.3.1.5 CUITIlVG plpE; The pipe shall be cut in a neat and worlat�nlike man.ner without damage to the pipe so as to have a s�iooth end at right angles to the �is of the pipe. 16.3.2 JOIl�;ING PVC TO FIZTINGS AND ACCESSORIES: 16.3.2.1 GE[�IERAL; pVC pipe shall be manufactur�,d with outside d.iameters equal to those of cast and ductile iron. Each valve, hydrant, or fitting connected to PVC plastic pipe shall be ecluipped with a bell or adapter having a profile that pezm.its a seal to be made directly bet�„�en the pipe end and the bell of the fitting with a rubber ring. The rubber rir:g shall be supplied by the fitting or accessory manufacturer. 16.3.2.2 IIVD PREPARATION: Pipe ends shall be cut square and deburred or rcunded in accordance with pipe manufacturer's reconII;�endations. 16.3.2.3 PUSH-ON JOINTS; The pushron joint is a single rubber-gasket joint. It is assembled by the positioning of a rubber rinq gasket in an annular recess in the fitting socket and the forcing of the end of the pipe into the socket. The pipe end compresses the gasket radially to , , form a positive seal. The gasket and annular recess are designed, sized and shaped so that the gasket is locked in place against displacement. , Care should be taken to use the correct rubber rinq to match the fitting ' ring groove profile. Assembly of the ring wit�i the ring groove and entire joint assesnbly should be in accordance with the manufacturer's reco�ndations. 16.3.2.4 b1EQ�NIcAr• JO�: �e �chanical joint is a bolted joint of the stutfing box type, Each joint sha�l consist of: (1) a bell provided with an exterior land having bolt holes or slots and a socket with an annular recess for the sealing gasket and the plain end of the plastic pipe; (2) a sealing gasket; (3) a follawer gland with bolt r�oles � matching those in the fitting; and (4) tee bolts and hexagonai nuts. 16-2 'a 16.4 PLL'GGING OF DEAD II�IDS: Plugs shall be inserted into the bells of a�l aead-end fittir.gs. Spigot ends of accessories, fittings and plain ends of plastic pipe shall be capped, A reaction or thnlst backing shall be provided at all dead-ends of pipe that are capped or plugged. Capped or plugged outlets to fittings shall be restrained to the fittings according to the fitting manufacturer's reca�nendation. 16.5 SERVICE CONNEt,TIpNg; Se�vice connections for all pipe diameters and classes shall be made� by means of a suitable saddle. SaddZes shall be Smith-Blair, Inc. , � 352 with bronge tapped inserts or riueller H1342, 22, 25, 28, 31, 33, 34 or 35. Corporation stops shall be Mueller H15000. E�ID OF ITII�Z 16-3 ..,. ..,_, ..., , , ., . -- - . . . _ ,._ .::- : _.;. :; ,: . ., ,_ �. � : .._, ...y .- :;1 ...., •' " ......a... �..�... .,..�-.:. �d.rroi�,1111��. "...... ...w.�.e_: ..... , .. . ... . ...� _. . ... ITIl�! 17 - TfiRUST BI�OC�CIl�IG ANp MISC�S�ANEp(1S USE OF 1500 PSI CONCREI'E: 17.1 GFNERI�L: At all locations where there are turns in the water , distribution piping, concrete thrust blocking shall be used to resist forces which tzy to separate the line due to internal water pressure. , One e�cception will be the flushing valve installations where the piping will have its awn built-in thrust resistance. 17.2 COriSTF,UCTION: Reference is made to the plan details for general sh�pe and quantities of the thrust blocking. The concrete shall be 2,000 psi in co�liance with the concrete specifications. All blocking is to bear against undistrubed trench wall. The quantities shc�z on the plans are believed to be sufficient, and pay quantit�i will be on that basis. If the contractor shauld over excavate, then in such event any extra concrete which may result shall be paid for by the Contractor. 17.3 ALISCELLAI`�CUS USE OF 1500 PSI CONCREI'E: 4�,rhile not shc.a� � �e plans, there may be some isolated cases where 1500 psi concrete will be required for a small amAunt of pipe esnbedment, �1;so, on the dawnstream end of headwalls, there may be occasion for a small am�unt of roughly finished concrete rip rap to control erosion. In such everit 1500 psi concrete shall be used at the unit price bid. � IIVD OF ITII�I - 17-1 � .,� I'i�i 18 - STII2ILIZF�ION AND TFSTING OF WATII2 r,7�� 18.1 GIIVERAL: After the pipe has been laid and backfilled, the newly laid pipe shall be fillecl with sterilizing solution and after sterilization as specified, the pipe shall be subjected to hydrostatic test. During the construction aperations, wor)Qrnn shall be required to use ut�nost care to see that parts of the stxuctures, inside of pipes, fittings, jointing materials, valves, etc. , the surface of which come in contact with the Owner's water are r�aintained in a sanitary condition. Contractor shall not insert chlorine in PVC water lines except in the fonn of chlorine in a water solution. Every effort irnust be made to keep the inside of the pipe, fittings, and valves free of all foreign matter, sticks, dist, rocks, etc. As each joint of pipe is being laid, it must be effectively swabbed so that all foreign matter is removed. All fittings and exposed open ends of pipe �st be blocked or capped until the line is co�leted. A.fter the pipe has been lai.d and backfilled, and� after sterilizing, the neti,�ly laid pipe shall be shall be subjected to hydrostatic pressure test by raising the pressure to the specified test pressure of 150 psi. At his option, the Coiitractor may install plugs for the purpose of testing pipe. 15.2 STEFtILIZATION: Sterilization of the line or any section thereof shall not be canursnced until the Owner's approval of the method, apparatus, sterilizing agent and the section of the line has been obtained. When the pipe line has been co�leted, be�ore nydrostatic testing, and before turning over to the Owner, the line shall be thoroughly sterilized according to the follawing procedure: l. Isolate the section to be sterilized so as to co�letely fill its er:tire volume capacity with water V�hile adding chlorine solution. 2. Inject chlorine into the section of line being sterilized so that its entire capacity will be filled witY� water containing chlorine in the �unt of 50 ppm. The sterilizing agent shall be introduced at one end of the section, and released from the opposite end ur,til the sterilizing a5ent is present at the d.ischarge end in such quantity as to i.ndic�te a residual chlorine of 50 ppm. Al1 valves shall then be - closed and the sterilizing solution perriitted to rer,Lain in the pipe line section for r,ot less than 24 hours. 3. At the end of sterilizing period the sterilizing solutior. will be discharged from the pipe and replacecl �vith fresh water. 18-1 � YA ... .:,a. .. .� .. •...�..:`. a'�.. � .-...-� . r '_ . ' . _ .,.- . _ ..�.. . . � .. . ' �. .. � ..�.: . .::�:. .::'.�_ ..: � _ . �. . . . . . . ��... . .. . r��_,'• :..-.:�.; -..�;..-� ..�:,;.; '' 4. A sa�le of water frcm the sterilized main shall be taken (not through a fire hydrant) frcan a suitable tap under the supezvision of the Owner and submitted to a che�nist for analysis. If the test shaws a satisfactory quality of water, the line so sterilized may then be hydrostatically tested and placed in service. If the sa�le shaws unsatisfactory quality of water the process of sterilization shall be repeated unti,l a satisfactozy water is obtained, The Contractor shall arrange and pay for the analysis by a chemist or cc�rmiercial laboratozy. 18.3 HYDROSTATIC TESTS: The Contractor shall test each section of pipe 1.nstalled by him using the method herein specified. The duration of each pressure test shall be for four (4j hours. Hydrostatic tests shall be per�orn�ed as herein specified. 18.3.1 PRCCIDURE; The Contractor shall test the pipe line �n sections when all the pipe in the section is at least 4 days old. The test shall be r;�ade against valves as available, or by placing ter.�c�rary plugs and bulkheads in the pipe, ar-ld filling the line slowly with water. Care shall be used to see that all air vents axe open during the filling. After the Iine, or section thereof, has been completely filled, it shall be allowed to stand under distribution system pressure for at least 24 hours to allcw the pipe to absorb what water it will and to-allaw the . escape of air from any air pockets. Duririq this �eriod, the bulkheads, valves, ranholes and connections shall be examined for leaks. If any are found, these shall be stopped or, in the case of valves in the main line or bulkheads, provision shall be made for meastsing the lea�ge during tl:e test. The water necessazy t,o maintain the test pressure shall be r.�asured through a meter or by other means satisfactozy to the �:gineer. Contractor shall furnish all necessary equ.ipment and make , tests at his expense. � , Before applying the specifieci test pressure, all air shall be exp�lle� , from the pip�. In the event it is necessary to expel air fran h.igh ', I poirits other than where outlets are pravided, the Contractor �ray tap the , line for this purpose and afterwards tightly plug the tag. These taps must be made by t1;e use of corporation stop. No extra compensation will be made for these taps. 18.3.2 E}CAMINATION UNDER pR�,gSV�E: puring t�e last two hours of the test, tt;e entire route of the pipe line shall be inspected to locate any leaks or breaks. Any �efective joints, cracked or defective pipe, fittinqs, or valves discovered in conseq_uence of this gressure test shall be rer.loved and replaced with sound materials and the test shall be repeated until satisfactory results are obtainecl. 18-2 r _ .. ... .. .. ... ... ...�►� .... . ___ ..... . . . �-�- - _. _ .. . :.��.....�r ,v.. � .- . . . . Any and all noticeable leaks shall be repaired regardless of whether the actual leakage is within the allawable. 18.3.3 PEF.MISSIBLE I�GE: No pipe installation will be accepted until or t:nless the leakage is less than that specified in AWG�+, Standard C600-64, Section 13.7, for pushron type pipe, 18.3.4 LEAKAGE DEFINID: Leak.aqe is defined as the quantity of water to be supplied into tre necely laid pipe, or any valved section of it, necessary to maintain the specified test pressure after the pipe has been filled with water and the air expelled. 18.4 FILLING AND TESTING WATEFt LINES; The Contractor's attention is called to the methcd of filling and testing water lines. Unless otherwise shown all water distri.bution pipe lines shall be �i21ed by use of connection to existing City mains. The Contractor shall take water at tir;�s, and ar�unts, acceptable to the City, ,Sferilizing agent shall be added at point of take and the new pipe shall be filled and let stard under pressure until proper time to test for leakage. Before leak.age test; valves at connecting ends shall be clased and replacement c•�ater for leakage test shall be pu�d into the pipe. After hydrostatic test, the sterilizing water useci during test shall be drained out. The Contractor shall pay the Owner for all water wasted due to leaks or line breaks, based upon City's d�estic rate and quantity lost estimated by the �hgineer. END OF ITE2? 18-3 � ,�;,, ,s•;.: t., t, ,.;. . . . .M ^i . . .. .. �. -.'.:• .. .. ._ . .'�- . .:� ITFI�1 19 - HOUSE SF.R�IICE CONNECTIONS 19.1 GIIVERAL: House sexvice connections shall be installed at the locations and to the details set forth on the Plans. The meter bcx shall be set 18" behind the curb unless directed othezwise and approved by the City. 19.2 MA`�RTAT�: �,-�ice lines shall be 1" I.D. Z�pe "K" coPper tubinq uniess specified otherwise on the approved Plans. The corporation stop shall be Mueller No. 15000. The nnter stop shall be 1�Iueller H-14255 with lock wing. The bronze bushing shall be Mueller H-15425 wi.th a 3/4" , straight meter coupling - riueller No. H-10890 or angle valve. 19.2 CONSTRUCTION: All trenching, backfilling and pipe layir_g shall be of first class worlananship and in general c�liance with otr:- sections of these specifications. After installation, the corporatic^ stop shall be left in the open position and the meter stop in the closed position. Seivice lines shall be installed prior to testing th�e water mains. 19.3 SERVICE I�TIONS: Unless otherwise designated by the Owner, water services shall be located at center of lots to be served. The locations shall be approved by the City. 19.4 P��TER BOXES: Meter boxes for service connections, 1" size or less, shall be 18" diameter corrugated galvanized steel material, 14" deep, with cast iron lid. Boxes for larger meters, and variance from this specification, shall have the City's written approval. 19.5 CURBS: Qzrbs to be marked with "w" sta�ed in concrete. At t�me that tap is made, it is to have Blue "A11en" marking tape run from service to top of ground, a 2" x 4° �stake painted Blue is to be driven at the curb behind service. END OF IZ'E�'i 19-1 :;, ._,_ _.. . .;. _ „ ._ : - . - - r,,: . ,. , . . - .. _ , ,.. ,.. ..- :;; ,., ,:: , , .:.+.::_...��.......,v.�:a..::..t:�fs;a►��. ... . . . .._ ..._ ...w.�i_.- �._� .. .... . ... . ..< . . _. . ITII�1 20 - CITY STAIv'DARDS 20.1 G��ERAL: At intervals the City EYigineer shall prepare, and City shall adopt, Standards that are contained on drawinqs prepared by the City �hgineer. Planners or Engineers, shall inctuire ahead of plan preparation as to such S-tandards being available and shall use same in construction plans. Variation shall have written approval of the City's Ehgineer. 20.2 AVAILABILITy OF CITY STAI�IDARDS: Copies of City Standard Detail Drawings may be obtained fran City �gineex-�s office at same cost as set up by reprociuction firms. a1IID OF ITE1�I � � 20-1 � . . , , .)'.;r� .'le':M .. '�' � � ��; a: i�� , `� . . . . ,:c,'- _. . ^ PLACEMENT Of WATER METER BOXES 4FTER TNE 9TREET CONTRACTOR WS COYPIETED STRfET METER BOIf SH4lL BE EiTHER CORRU6ATED CON9TqUCT10N AND HAS BLAOEO AMD CLEANED-UP B�CKlLOpE! METAL WITH CAST IRON TOP ANO l�D OR BEMIND TME CURB AND 9UTTER. TXE WATER AND OEWER CON- INTERNA710NAL PLASTICS MFO.00.ALL PLASTIC TRACTOR SXALL PLACE A 1NATER MCTER 807( OVER EACN MATER METER BOX NO.640.WITM BA55 6 NAYES CAST $ERVICE. TXI! B07(9NALL BE LOCATED 6��B11CK OF CURB AND IqON LI� WITM HAIRPIN IACK NO.3P OR THE TOP AT FINISHED GRAOE ELEVATION. TNE CURB 3TOP ON THE APPROVED EOU4L. END OF TNE WATER SERVICE SMALL BE IOCAIED WITMIN e'FROM TME TOP OF THE BOX. �2��X4��M KER, PAINTEO BLUE 9 W TNIS WIONK WILL BE CONSIOERED SUBSIDIARY TO BID ITEM FOH WATER SERV�CE. _� � BY THE � ; OWNERS ; - � 3/4"�NG�ESTOP H-14230(91N6LE SERYICE) W - i � � i I�X3/4°X3/4" TEE N-10380 W/2-3/4� - z � �� ANB�ESTOP4 M-142S0(DOUlIE 3ERVICE) J 2� 1 I . � � I y� �-+r-- y u � - Qi H �1 �I�� ; I . W . a� -� � �� . � 6N '.:'.' _':' :.,-,- •.�..; o �I �_� �� .-. .:�. . .... � .: �I ��'�--- N .. . ;. . .-' ...',:•:�.:. , a ...'I!^/I___N/ -r�/ii�/�� /i�.�1r-Na �M�/y�l: - -� ti 3/4" 4NGLESTOP H-142S0(SIN6LE SERVICE� �4t 1"X3/4�%3/4" tEE X-IS3e6W/1-1'�CURB 1"TYPE"K"COPPER �� STOP N-152T5 ANO 2-3/4"4NGlE4TOP5 3/4" fOR SINGLE SERVICE � �t� X-14250(DOUBIE SERVICE} I��CURB STOP CONNECTION � �/ TO BE INSTALLED ON STREET SIDE Of TEE. I� fOR DOUBIE SERVICE -- STORY DRAIN �j . � � . . . CONNECTION � . } `\�� + " � �� i%� NOTE � � ' � - � ATER MAIN \�� " �T M��LL PE TXE RESPONSi81lITY OF THE �� 1=0�A1J2�� CONTRACTOR PLqCING WATER SURVICE TO 3/4"X3/4�(SINOIE SERVICE)OR3/4�X1�(DOUBLE SERVICE� COFPORATION STOP ��- -� -PLACE WATER $ENVICES A MINIMUM OP (MUELLAN N IS000) WITH STqq16NT COUPlIN6 NUT OR MAY$-SEAL-CORPORATION _ ��BELOW TNE OUTSIDE DIAMETER OF � YROPOSED STORM DRqIN WNEN 5�l+"-'^, 970P WITX COPPER OUTLET,OR APPROVED EOUIVALENT. SERVICE CONNECTION PLACF,LACED BEFOfiE 9TORM OFA�� 2'--'I �- - - - -� �-- -- -� ' i 3 REINFORCING ' /^� I � �Q. I� \ � O TL7 I I I' O N � � � �` �� I N � - - - ---� � -_ _) PLAN . PLAN ORADE � 6RADE—� a - �'4e ..Q •�4' a d:' " e, a., ' . .1'. ' 1� .. m . .n. W Y h V i W O d' J J I V � Q 2 W� I a u � Q� m o a m �6��C.1. PIPE � R� t Z 01 I �� Q t0 J 1 /1 U L I I �-�-V AIVE r-V4 LV E O rWATEH IJNE rWATER LINE O VALVES IN YqRDS OR OTMER AqEAS VqIVES WITMIN ROqDW4YS OR OT/lEq NOT SUBJECT TO TRAFFIC PAVED ON SURF4CED GRE4S ELEVATION ELEVATION. GATE VALVE & �/ALVE BOX