In St. Albert, any excavation deeper than 3 meters triggers specific requirements under the Alberta Building Code and NBCC 2015. The city sits on a complex layering of glacial Lake Edmonton sediments—stiff clays and tills that can stand vertically for a while but degrade fast once the water table kicks in near the Sturgeon River valley. We start every deep excavation project by mapping the stratigraphy with data from CPT testing to define the transition from dry till to saturated silt. That single boundary dictates whether a soldier pile wall will work or if you are looking at a tied-back secant system. Our team handles the full design cycle—from factual geotechnical reports to detailed shoring drawings—keeping the contractor’s schedule and the city’s permitting process in sync.
St. Albert's glacial till stands up until it doesn't—our designs account for the fissures and groundwater that change the game.
