HomeMy WebLinkAboutItem 11 - Ruth Wall RoadMEMO TO:
FROM:
MEETING DATE:
SUBJECT:
RECOMMENDATION:
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HONORABLE MAYOR AND MEMBERS OF THE CITY COUNCIL
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ROGER NELSON, CITY MANAGER��
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JULY 16, 2002
TIF IMPROVEMENTS FOR RUTH WALL ROAD — CHANGE
ORDER # 5.
City Council consider approving Change Order # 5 to the Ruth Wall TIF II Project in an
amount of $ 546,402.44 for quantity changes and scope changes to the contract,
authorize staff to execute said change orders, and take any necessary action.
FUNDING SOURCE:
Funds are currently available in Account #173-48899-0003, TIF II/Ruth Wall
Construction.
BACKGROUND:
TIF improvements for Opryland Texas include improvements to Ruth Wall Road and
improvements to the City's water and sanitary sewer systems. The Ruth Wall Road
project scope includes three gravity sanitary sewer lines, a sanitary sewer lift station and
a sanitary sewer force main.
Retaining Wall $134.819.81
The construction plans did not accurately reflect elevations of abutting properties on the
west side of the roadway at the Cross Timbers Apartments and Wildwood Place
Apartments. The inaccuracy of the plans was partially due to the construction of the
Wildwood Place Apartments, which occurred after the initial development of the
construction plans. Since the abutting properties are higher than reflected in the plans,
a monolithic retaining wall is required and will be incorporated in the hike and bike trail
construction from Turner Street north to Wildwood Drive. The addition of the wall also
necessitates that the hike and bike trail thickness be increased. (Cost $ 134, 819.81)
July 11, 2002 (1:17PM)
Materials $107.616.00
The design of the low water crossing in the construction plans did not clearly specify that
very low PI material would have to be imported into the site to backfill the center core
between the MSE walls as they are constructed. Initial soil borings along Ruth Wall prior
to design of the project indicated that the excavated roadway material would qualify for
this specific material; however, on site conditions indicate that the material is not suitable
for this special backfill material.
The principal concern for this construction is related to maintaining the stability of the
center core material to protect excessive pore water pressures and lateral loads that
could lead to wall failure. This condition would develop as the lake level dropped after an
inundated condition. If the core was constructed with material possessing significantly
different characteristics from the material utilized to backfill the structural wall element,
differing internal pressures within the fill material could develop as the differing materials
drained at different rates.
Inundation is a very real possibility at this crossing with the lower elevation of the walls
at approximately 535 feet and the top elevation at approximately 565 feet. The dam
spillway is at elevation 560 feet and has been overtopped twice in the last decade.
Staff has discussed this issue with TOOT representatives highly experienced with
inundated walls and have concluded that the imported material is necessary. (Cost
$107,616.00).
Gas Line Construction $122,547.77
The main gas line serving the hotel site is planned to be constructed along the east side
of Ruth Wall Street right-of-way and across the low water crossing from Northwest
Highway. To facilitate construction coordination within the tight work area on the east
side of the street and to save money by constructing the line before the roadway paving
is in place, Gaylord has requested that the City's contractor install the gas line. The
additional scope of work will be funded by Opryland Texas. (Cost $ 122,547.77).
Power Trunk $ 55.216.00
The secondary power trunk line serving the hotel site will be constructed along the east
side of Ruth Wall Street right-of-way and across the low water crossing from Northwest
Highway. The line will be outside of the right-of-way in an existing transmission
easement between Northwest Highway and the low water crossing. Conduit for the
power line through the low water crossing segment was originally included in the scope
of the Ruth Wall project to be installed by our contractor beneath the pavement. North of
the low water crossing, the power line continues along the west side of the new Ruth
Wall alignment for approximately 1,100 feet and then proceeds north along the old Ruth
Wall roadway for an additional 1,400 feet to its entry point to the site. Gaylord has
July 11, 2002 (1:17PM)
asked that our contractor install this power conduit north of the low water crossing to the
entry point into the site. The additional scope of work will be funded by Opryland Texas.
(Cost $55,216.00).
Waterline Relocation $115,537.66
The planned route for the 16" waterline across the low water crossing has been
relocated to allow the construction of the gas line beneath the pavement area. Initially,
the waterline would have been constructed down the center of the pavement across the
low water crossing and the gas line would be constructed at the foot of the east wall.
However, the gas company rejected that plan and began planning an alternative route
through a neighborhood, which would have increased the costs significantly. Staff
advised Oncor that the alternative route was not feasible.
Staff suggested that the waterline be rerouted to parallel the sanitary sewer trunk line
from the hotel site to the lift station and thus open up the center of the low water
crossing for the gas line.
Although the rerouting of the water line does require additional length and significantly
more difficult construction for an increase of $115,537.66, the net cost to Gaylord for this
element is reduced. (Cost $115,5437).
Pedestrian $10,665,30
The pedestrian rails across the low water crossing have been modified to match the new
rail configuration on the hotel site. The change results directly from problems
experienced with the fabrication and construction of the pedestrian rails on Gaylord Trail.
(The cost for this change in pattern and complexity over a length of 2,190 LF is
$10,665.30.)
Funding for this Change Order is available from existing TIF bond proceeds. The
change order funding is being spent out of the amount ($27,5M) previously committed
by the City for the Opryland Project.
Staff recommends approving Change Order # 5.
0:\agenda\7-16-02\Ruth Wall CO # 5
July 11, 2002 (1:17PM)
CONTRACT MODIFICATION AGREEMENT C.O. # 5
A change to the terms of the Contract below is agreed as follows:
111; PROJECT: TIF IMPROVEMENTS FOR OPRYLAND TEXAS, PHASE 2 - RUTH WALL ROAD, LIFT STATION AND
SEWER IMPROVEMENTS
OWNER: City of Grapevine
ENGINEER: CARTER & BURGESS, INC.
CONTRACTOR: AUI CONTRACTORS, INC.
CHANGE ORDER NO: 5
DATE: 05-02-02
The compensation agreed upon in this Change Order is for all costs the CONTRACTOR has incurred or may incur as a result of or
relating to the changes in the scope of work whether said cost are known, unknown, foreseen or unforeseen at this time, including
without limitation, any cost for delay, extended overhead, ripple or impact cost, or any other effect on changed or unchanged work as
a result of this Change Order. The compensation will be for fully complete and in-place construction and the actual quantities of
items installed or constructed will be measured and the quantities herein adjusted accordingly.
A. CHANGE IN SCOPE OF WORK:
Additional Retaining Wall from Station 11+80 to 16+61 and from 19+75 to 21+78, all labor, material, and equipment included,
Associated change in cocnrete thickness (base of retaining wall,) dowell on curb, railing, and select fill between the two
MSE retaining walls.
B. DETAILED UNIT COSTS, QUANTITIES & TOTAL CONTRACT PRICE CHANGES
Change Revised Unit Extension Revised
TOTAL THIS CHANGE ORDER $546,402.44
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CONTRACT MODIFICATION AGREEMENT C.O. # 5
C. SUMMARY OF NET CHANGES TO CONTRACT AMOUNT AND TIME
Original Contract Amount
$5,889,576.70
Change Order No. 1
($3,050.00)
Change Order No. 2
$47,347.02
Change Order No. 3
$95,559.88
Change Order No. 4
$137,460.89
Change Order No. 5
$546,402.44
Change Order No. 6
Change Order No. 7
Revised Contract Amount
$6,713,296.93
Number of Days added to the Contract Time by this change order: 13 Days
Last day of the Contract Time:
D. APPROVALS
City of Grapevine
By:
Jerry L. Hodge Date
Director of Public Works
Engineer
By. (Lk Date
A. A. Martinez
Carter & Burgess
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