Helical Piles, Shotcrete

Overcoming Poor Soil-Bearing Capacity

The Paruk Residence is a high end two story structure, located at 24 York Valley Crescent in North York, Ontario, just north of the Don River. A geotechnical investigation performed by Patriot Engineering revealed very poor soil bearing capacity, unsuitable for a slab-on-grade or strip footing foundation.

The floor slab was designed as a structural slab supported on grade beams resting on helical pier foundations. The helical piers were 2-7/8 inch diameter, 55 ksi minimum yield strength, galvanized, and supplied by Ideal Group.
The helical piers were designed for a maximum 30 kips working load, which was achieved at a torque resistance of approximately 9,000 ft. lbs. Using a 17,000 ft. lbs. McMillen drive unit, 94 piers were installed in 3 days.

HCM also did the excavation, perimeter shotcrete shoring and U/S stone placement c/w geotextile, which helped construction access and provided a clean surface for the concrete form work contractor.

Client: HC Matcon
Location: Toronto, Ontario

Alloa Feedermain

Alloa Feedermain This project involved installation of 3 watertight caisson wall shafts. Two rectangular secant pile wall shaft approx 12m deep and one 6m diameter compression ring shaft approx 7m

LRT Slope Protection at Retaining Wall

LRT Slope Protection at Retaining Wall

LRT Slope Protection at Retaining Wall HC Matcon (HCM) and RWH Engineering (RWH) reacted quickly after being contacted to provide a design-build solution for a slope failure that occurred during

Graham Residence

Graham Residence

Residential Shoring: Complex Design Requires Innovation A retaining wall was required to accommodate the architectural design for a private residence. The site topography presented the General Contractor (Builder) with the

Burke Residence

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Weston Road

/ Caissons, Shotcrete

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The Bow

The Bow

/ Caissons, Shotcrete

The future Bow building, located in Calgary, Alberta Canada, is an innovation in both architectural and shoring design. At 58 stories and with a footprint of two city blocks, The