STAFF REPORT
December 15, 1999
To: Works Committee
From: Barry H. Gutteridge, Commissioner, Works and Emergency Services
Subject: F.G. Gardiner Expressway - Concrete Substructure Repairs
Sherbourne Street to Jarvis Street Contract No. T-33-99, Tender Call No. 9-1999
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 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.
Recommendations:
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 adapted 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 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 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 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.
