Isherwood has built a reputation
for innovative solutions for increasingly
complex projects, “whether using
tried-and-true methods or adopting
the newest technologies,” said Nadir
Ansari, CEO, Isherwood Geostructural
Engineers. He noted that under Brian
Isherwood’s watch, Toronto projects
began using interlocking caisson or
secant walls years before they were
adopted elsewhere in the industry
and that the company introduced
small-diameter tight-access and
low-overhead drilling solutions for
deep foundations.
Isherwood also worked with contractors
to introduce micropiles
and anchored shotcrete (a Canadian
invention first patented in 1970 as
a ground-control method) and was
among the first to recognize that
soil-nailing as an earth-reinforcing
technology was well-suited for the
glacial soils and weathered rock of the
Toronto area, and in 1989 designed
the area’s first permanent soil-nail
wall. The company also pioneered
the use of anchored shotcrete to
support the Brantford hospital excavation
during its 2003 expansion,
where its performance matched that
expected of a conventional continuous
caisson wall.
IGE has developed the expertise to
understand the unique soil composition
of any given project and predict
earth and building movements related
to excavations using the observational
method based on its long experience,
extensive site data records and its use
of precision geotechnical instrumentation
and monitoring, said Ansari.
“The quantum leap in monitoring
technology gives us the ability
to mitigate risk that simply was not
COMPANY PROFILE
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