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HELPING YOU BUILD
A ST ONG LEGAL
FOUNDATION
FILLMORE RILEY LLP
LAWYERS AND TRADEMARK AGENTS fillmoreriley.com
• AZ39 sheet piles – 50 to 60 feet in length (supplied by
MasTec Canada Construction Inc.)
• Whaler beams and trestles (supplied by MasTec Canada
Construction Inc.)
• Sheet piles – 196 pairs required; H-Piles – 168 required
Challenges
With every project, there are challenges that must be over-come.
11322-FillmoreRiley-PilingAd-(3.5x4.75)-Aug2017-FNL.indd 1 8/16/17 5:18 PM
This project was no different.
“With installing sheet piles to a minimum depth of 17
metres, we mobilized vibratory and diesel hammers to
ensure the design tip depth was achieved,” said Horner.
“With the expectation of riprap along the river, the vibratory
hammer gave greater assurance of successful installation. As
a result of being able to reach into our extensive fleet of piling
equipment, we were able to allocate the proper equipment
to install these piles and complete this work with little to no
worry of piles not reaching design embedment.”
To ensure the H-piles (up to 40 metres in length) were
installed to practical refusal, driven shoes were welded
onto each pile prior to installation. The Delmag D30 diesel
hammers then drove these piles to practical refusal with
relative ease.
“After the client built the concrete piers inside each cof-ferdam,
the sheet piles had to be extracted,” said Horner.
“MasTec Canada had to take extreme caution and care as to
not damage the newly constructed concrete during the suc-cessful
extraction of the sheet piles. We had a concern that
the sheet piles would experience difficulty with the extrac-tion
process. However, with the vibro hammers utilized,
this concern was ceded immediately. It was like a hot knife
through butter.”
All of this had to occur with MasTec taking the necessary
precautions to prevent the adjacent soils and any sort of con-taminants
from entering the river during the construction
and removal of each associated cofferdam. No easy feat, but
it was achieved.
“The underground geology and the potential of subsurface
conflicts is always a prospective worry. However, with our
team utilizing the correct equipment, this worry was practi-cally
jettisoned. These cofferdams were designed to take the
river hydrology into account. The pressure of the river locked
up the sheet piles to form a watertight seal to allow for con-struction
work inside of each.”
When asked what the most unique aspect of this project
is, Horner said, “It is working in the Assiniboine River and
parallel to the existing bridges on the TransCanada Highway.
The highway could not be closed, so traffic plans were cre-ated
to minimize traffic impediment, yet allow the cranes
to install the piles close to the bridges. With the hoisting
of the piles within such close proximity, lift plans were cre-ated
and followed to ensure no piles were to overhang the
associated bridges.”
The river was frozen over so the design had to take the
potential ice sheet impact into consideration.
“Sediments and any possible contaminants could not
enter the river body. Sediment and erosion control blankets
were utilized,” he said. “We are doing our part to ensure clean
water ways.”
PROJECT SPOTLIGHT
PILING CANADA 51
