F.G. Gardiner Expressway - Concrete Substructure Repairs
Sherbourne Street to Jarvis Street
Contract No. T-33-99, Tender Call No. 9-1999
The Works Committee recommends the adoption of the following report
(December 15, 1999) from the Commissioner of Works and Emergency
Services:
Purpose:
To obtain Council authority to increase the contract price of Contract
No. T-33-99 for the necessary additional structural rehabilitation work to
the substructure of the F.G. Gardiner Expressway from Sherbourne
Street to Jarvis Street.
Financial Implications and Impact Statement:
Funding for Contract No. T-33-99 has previously been approved by
Council and is available in Works and Emergency Services Capital
Account TR180, F.G.Gardiner Expressway - Don Valley Parkway to
Highway 427.
Recommendation:
It is recommended that the cost of Contract No. T-33-99, Tender Call No.
9-1999, for the concrete substructure repair to the F.G Gardiner
Expressway from Sherbourne Street to Jarvis Street, be increased by
$26, 046.11 to a total of $4,521,690.46 (GST inclusive) to cover the costs
incurred for work done under this contract including additional
unforeseen repair work.
Background:
At its meeting on April 13, 1999, City Council adopted the
recommendations from the Urban Environment and Development
Committee to adopt the joint report (March 8, 1999) from the
Commissioner, Works and Emergency Services and the Chief Financial
Officer and Treasurer, and authorized the award of Contract No. T-33-99
to Underground Services (1983) Ltd. in the total amount of $4,495,644.35
including all taxes and charges.
Work in Contract No. T-33-99 primarily comprised of removal of
deteriorated concrete on the columns and pier caps beams, cleaned and
sandblasted the concrete surface and the reinforced steel bars and
replaced with high quality concrete. However, the columns and the pier
cap beams were in worse condition than originally anticipated and
therefore the repair quantities increased.
In the design stage staff had performed a site inspection and based on
the experience on past projects, quantities were estimated. In
rehabilitation work, the existing conditions are difficult to determine and
during construction, it is not unusual to discover that the deterioration
is more extensive than originally estimated. As a result, the quantity of
repairs may increase significantly from what was originally allowed for
in the contract.
Conclusions:
The contract price for Contract No. T-33-99 be increased by $26,046,11
to a total of $4,521,690.46 (GST inclusive) to cover the extra costs for
additional repair work.
Contact:
W.G. (William) Crowther, P.Eng.
Director, Engineering Services
Tel: No. 392-8256; Fax: No. 392-4594
E:mail: Wcrowth@city.toronto.on.ca.