Saskatchewan Powerline Tower Foundation Repair
Installation Criteria: 5.5” Grouted HD Piling
Project Lead: Ampjack
Equipment: CAT 329 Excavator, 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
APE supplied: Pile material, Excavator-mounted HD drivers & driver bits
Time to Install single unit: 30-40 minutes from pre-drill to complete installed pile
APE job influence: Designed Drilling system to install and grout piles simultaneously
Sask Power reached out to us 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.
Our excavator-mounted HD Drivers allowed us to drill into the Canadian Shield, the Earth’s oldest, hardest dense geology, and to install high-strength grouted micropiles deep into the Precambrian-formed land to produce a foundation that would support the transmission line towers, indefinitely.