Monopole Installation Using Helical Piles For Rogers 4g Wireless Services

Foundation Reinforcement at Hell’s Gate in the Fraser Canyon

April 6, 2016

Micropile & Tieback Foundation Project

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.

Monopole Installation Using Helical Piles For Rogers 4g Wireless Services
Monopole Installation Using Helical Piles For Rogers 4g Wireless Services
Challenges

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.

Solution

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.

Specifications

No. of Micropiles: 20
No. of Anchors: 10
Design: Micropiles
Application: Communications Tower
Pile Type: #20 DCP Micropiles in 6” hole & #10 Anchors in 4” hole
Client: Emil Anderson Construction

Micropile & Tieback Foundation – Hell’s Gate in the Fraser Canyon