A small rock slide occurred at the North end of the Hell’s Gate Atrium Parking lot, next to Highway 1 through the Fraser Canyon. The rock slide compromised one of the south-bound lanes of traffic as well as endangering visitors. Emil Anderson Contracting hired TerraCana Foundation Solutions to install a micropile and tieback foundation to support an MSE wall.
Site access required a light weight drill capable of case hole drilling both vertical piles and tieback anchors at very complex angles. Drilling conditions were highly variable including blast rock and bedrock.
TerraCana used a modified Air-Track drill equipped with a rotary top drive motor as well as a external hydraulic power pack to complete the drilling work. A combination of open hole and case hole drilling was utilized depending on each hole’s conditions. Once drilling was complete, TerraCana completed the concrete works to support the MSE wall.
No. of Micropiles: 20
No. of Anchors: 10
Pile Type: #20 DCP Micropiles in 6” hole & #10 Anchors in 4” hole
Length: 6 – 10 m