HomeMy WebLinkAboutAgenda Report - June 4, 1986 (71):IM•1 r C
ODDER Council was apprised that the California Street
reconstruction project (total length 2700 ft.) has
OC -45(a) experienced significant problems with wet, unstable
subgrade. In three areas with a ecanbined length of 1000
feet, the ground was too unstable to work. After a number
of discussions with the contractor, and performing two
"test" sections, it was decided to excavate the street 12"
to 18", place a soil stabilization fabric and new base rock
- 36" depth was necessary in same areas. This technique
has been very successful and paving should begin late this
week.
The use of fabric is very cost --effective - it saves at
least 6" to 12" of excavation while the "break-even" depth
on fabric is less than 2". In addition, the shallow depth
of many utilities made deeper excavation difficult to
impossible. The total amount of the change order to
correct this unstable subgrade was $64,195.00. Net change
by previous change orders amounted to $12,425.00 thereby
bringing the total dollar cost of change orders for this
project to $76,620.00.
Following discussion, on motion of Council Menber
Pinkerton, Reid second, Council approved Change Order No. 2
for the California Street Improvements - -IAckeford to
Turner (Unstable subgrade Change Order), and authorized
proceeding with the subject project with the inclusion of
the subject Change Order.
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MEMORANDUM, City of Lodi, Public Works Department
TO: City Council
FROM: Public Works Director
DATE: June 2, 1986
SUBJECT: California Street Improvements - Lockeford to Turner
Unstable Subgrade Change Order (Change Order No. 2)
The California Str,et reconstruction project (total length 2700 ft.) has
experienced significant problems with wet, -unstable subgrade. in three
areas with a combined length of 1000 ft., the ground was too unstable to
work. After a number of discussions with the contractor, and performing
two "test" sections, it was decided to excavate the street 12" to 1811,
place a soil stabilization fabric and new base rock - 36" depth was neces-
sary in some areas. This technique has been successful and paving should
begin late this week.
The use of fabric is very cost-effective - it saves at least 6" to 12" of
excavation while the "break-even" depth on fabric is less than 211. In
addition, the shallow depth of many utilities made deeper excavation dif-
ficult to impossible.
A copy of the change order is attached. A breakdown of contract change
orders and contract amount is as follows:
Total cost of this change order. $ 64,195.00*
Net change by previous change orders 12,425.00
Total of authorized change orders $ 76,620.00
Original contract amount $364,469.20
New contract amount including all
change orders $441,089.20
% change from original
contract amount 21.0%
*To be funded from 124 Fund.
jJac L. Ronsko
Pub is Works Director
Attachment
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-CITY OF LODI
PUBLIC WORKS DEPARTMENT
CONTRACT CHANGE ORDER NO.2
Sheet i of i
Date: 5/29/86
PROJECT: CALIFORNIA STREET RECONSTRUCTION
Lockefo rd St. to Turner Rd.
CONTRACTOR: Claude C. Wood Co.
You are hereby directed to make the herein described changes from the Plans and
Specifications or do the following described work not included in the Plans and
Specifications on this contract.
Description of work to be done, estimate of quantities, and prices to be paid.
Segregate between additional work at contract price, agreed price and force
account. Unless otherwise stated, rates for rental of equipment cover only
such time as equipment is actually used and no allowance will be made for
- idle time.
Correct unstable subgrade:
Estimated quantity
2200 CY
3900 SY
4000. T
Item
Excavation
Stabilization Fabric
Imported base
Unit Price
$ 5.50
1.05
12.00
Total Price
$ 12,100.00
4,095.00
l,8, 000.00
.t material
except with changed quantities
Vi �.
Total Cost of Change Order NOT TO EXCEED * $ 64.195.00
�. Contract Price. including this change order, will be $7 441.089.20
p 1yddre?MnwgJkihis o rfi#r the time of cfmpletion will be adjusted as follows:
Submitted by: Date:
Approval Recommended: Date: S�gL1�8�
�., Approved: Date:
Approved, City Mana oDate:
We, the undersigned c ract�, have given careful consideration to the change proposed
and hereby agree; if this proposal is approved, that we will provide all equipment,
furnish all materials, except as may otherwise be noted above,,and perform all services
necessary for the work above specified, and will accept as full payment therefor the
prices shown above.
ACCEPTED: "te: "CeContractor: !�
By: �_ Title:
If the Contractor does not sign acceptance of this order, his attention is directed g
to the requirements of the Specifications as to proceeding with the ordered work andVc
-.filing a written protest within the time therein specified.