Client: Pomerleau; Canada Post
Location: Scarborough, ON
Role: Subcontractor to the Construction Manager
Contract Type: Design-Bid-Build, though the overall project was a Design-Build
The 42-acre site consisted of an old driving range and farmland that was to be redeveloped into a 54,000 m2 Canada Post facility. The site was located across the street from a residential neighbourhood. Over 318,000 m3 of earth was moved on site, all of it being placed and compacted as engineered fill, with a further 83,000 m3 of topsoil being removed from site. Over 3.2 km of storm line was installed throughout the site, including three large stormwater treatment structures and six underground stormwater management facilities. Excavation for large spread footings, strip footings, elevator pits, exterior ramps and a grade beam was completed year-round, with dewatering and frost considerations implemented as required.
Metric was responsible for all the following works within this project:
- Installation and maintenance of erosion and sediment controls (1,700 lm).
- Clearing and grubbing (42-acre site)
- Placement of engineered fill from existing stockpiles and cut/fill activities (318,000 m3).
- Placement of granular and fine grading for building slab (21,800 tonnes; 54,000 m2)
- Placement of geotextile and granular for parking lot construction (65,000 tonnes)
- Load and haul Topsoil Offsite (83,000 m3)
- Excavate for and install 6 underground stormwater management systems (Total of 5,920 m3 of water storage over a 7,525 m2 footprint).
- Install one 3600mm Jellyfish structure, one 3000mm diameter OGS structure, and one 3600mm diameter OGS structure
- Install 3,250m of storm pipe (Concrete and PVC pipe from 250mm dia. to 750mm dia.)
- Install Watermain (147m of 250mm dia. and 82m of 150mm dia. for fire line, and 147m of 100mm dia. for domestic line)
- Install 3 precast water chambers (4.6m x 2.0m, 3.8m x 2.4m, 3.4m x 2.0m)
- Install 57 Manholes (1200mm to 1800mm dia.) and 82 Catchbasins
- Placement of topsoil in landscaped areas (5,000m3)
- Excavate for cast-in-place retaining walls (480 lm)
