After discovering differing ground conditions, Keller provides an alternative design for the new bus facility.
The project
The City of Hamilton constructed a new bus maintenance and storage facility to increase the transit division's capacity for its growing fleet. The facility will include a garage, maintenance bays, a parking garage, and a two-story office area. Ground conditions across the 41-acre site comprised poor-bearing soils, including a continuous peat layer with high compressibility.
Initial geotechnical reports recommended using rigid inclusions for ground improvement; however, through further investigation, Keller found discrepancies in the thickness and compressibility of the peat layer.
Keller proposed an alternative design that:
- Retained the 4800 rigid inclusions across the site
- Required the addition of 260 CFA (auger cast) piles and drilled shafts to support the parking garage and office building.
Keller fast-tracked the installation to meet the client’s schedule and allow for the next phase of construction.