PROJECT DETAILS

Project Name: Saskatchewan Powerline Tower Foundation Repair

Installation Criteria: 5.5” Grouted Diplacement Piles

Project Lead: Ampjack

Equipment: CAT 329 Excavator, APE HD70 driver, Down-the-hole 8.75” bit, Polar penetrator 11” bit

Installation Depths: 25’ to 35’ from surface

Jobsite Restrictions: No paved roads, caribou herds

Geotechnical Concerns: Muskeg, large boulders, swampy organic material, and solid bedrock

Pileworks supplied: Helical displacement pile material, custom driver bits & tooling

Time to Install single unit: 30-40 minutes from pre-drill to complete installed pile

Pileworks job influence: Designed drill tooling to work with APE HD driver system

Description:

Sask Power reached out to Ampjack with a task to repair eleven powerline transmission towers that had started leaning, and even sinking! The shifting underground terrain had left their foundations unstable, and in need of a superior design, with greater longevity and resistance to subterranean changes over time.

APE’s excavator-mounted HD Drivers allowed Ampjack to drill into the Canadian Shield, the Earth’s oldest, hardest dense geology, and to install high-capacity grouted displacement piles deep into the Precambrian-formed land to produce a foundation that would support the transmission line towers, indefinitely.