Keller provided earth retention for a new building and completed the project in eight weeks with zero lost time incidents.
Weststone Developments was constructing a new apartment building with 2 levels of below grade parking. The soil conditions present were not conducive to traditional shotcrete shoring methods so Keller was called in to design a wall system to suit the job.
The main challenge was installing piles and keeping them vertical, as the pile overlap was a mere 100mm. Keller had already selected Continuous Flight Auger (CFA) as their installation method and had secured the project based on an optimized schedule than traditional cast-in-place pile installation.
A scalloped, cast-in-place guide wall was constructed to lock the piles together at the top of the wall. A deviation sensor was installed to measure the pile verticality. If there were any deviations above the specified 1% they were reconstructed to ensure the interlock was guaranteed across the depth of the proposed excavation. The secant pile system was made up of 400 no. piles at 600mm diameter.
Vancouver Shotcrete & Shoring Ltd.
Keller Business Unit(s)
Keller Foundations Ltd.