PROJECT SPOTLIGHT
“Typical challenges with access and logistics of working in
the inner city were managed and planned for.”
The project was also located in a known problematic geological
area called “the channel.”
“This area of the city has highly saturated silts due to the
flow of subsurface water that travels from the Elbow River
to the Bow River, known as ‘the channel,’” said Baldwin. “The
channel has caused major issues with excavation projects
in the past due to loss of soil, resulting in settlement issues.
Doublestar worked closely with the design team to ensure
that we maintained drilling techniques to mitigate soil loss
Doublestar Drilling’s Liebherr LB36
drilling one of 452 one-metre-diameter,
19-metre-deep pile. A rock auger and
segmental casing were required for the
entire depth in the construction of a
secant pile wall in downtown Calgary for
The Concord project in September 2015.
due to heaving soils and ensure alignment and overlap of the
secant piles to withstand the hydrostatic pressures produced
by the high ground water levels.”
Due to the varied layers of geology below and above the
silt, specifically designed drilling tools and techniques were
developed and utilized specifically for this project.
“As a result of the project success, Doublestar Drilling
became a highly preferred contractor of GeoPacific
Consultants, the geotechnical engineering firm representing
the owner,” said Baldwin. “We are very pleased with how the
project is progressing.”
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