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We are your subsurface risk managers, specializing in high complexity site investigations, advanced analysis and design.

TULLOCH offers the full range of geotechnical engineering services ranging from ground investigation, design, construction support and instrumentation. The practice focuses on soil mechanics and foundation engineering, geotechnical earthquake engineering, tunneling and trenchless technologies, dam engineering, design of temporary works, hydrogeology and groundwater modeling. 

Our key differentiators and experience highlights are: 

  • High complexity site investigations involving difficult access, complex logistics and remote sites

  • Dam safety and dam engineering for over 40 dams in Canada, the United States and overseas in the hydropower, infrastructure and mining sectors

  • Specialized deep foundation and ground improvement solutions including value engineering and foundation optimization

  • Temporary works design - cofferdam, causeway, excavation support systems

  • Groundwater control measures including cut-off wall design

  • Advanced numerical modeling including soil-structure interaction and seismic site response

  • Geotechnical instrumentation complemented by in-house surveying, remote sensing and mapping expertise such as LiDAR capabilities

Crean Hill - Ellen Pit North Dam Cover.J
Vale Dams
Sudbury Basin, ON

TULLOCH performed annual Dam Safety Inspections of 66 dams and water management facilities at 12 mine sites across the Sudbury Basin, including closed mine tailings dams and concrete control structures. Our services included site inspection of the various structures, review of the existing instrumentation systems and historical studies and preparation of dam safety inspection reports. 

Mica Dam - BC - George Liang.JPG
Mica Dam
Kinbasket Lake, BC

TULLOCH performed a Dam Safety Review for the 244m high Mica Dam, the tallest dam in Canada. Our services included site inspection and engineering assessment of the dam and appurtenant structures, evaluation of the existing instrumentation systems, review of historical design and dam safety studies and action plan recommendations. 

The City of Kingston: Third Crossing Project
Third Crossing Bridge
Kingston, ON

TULLOCH is the geotechnical Engineer of Record for the 1.2km long bridge, the first infrastructure project in Canada to be delivered using an Integrated Project Delivery model. Our expertise and services provided to the design-build team includes on and off-shore site investigations, foundation design, embankments, retaining walls and causeways, instrumentation and seismic site response analysis.

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