Chatham-Kent grew fast after the railway arrived in the 1850s. The city sits on thick deposits of sand and silt from the Thames River delta. That loose granular soil is prone to liquefaction during strong earthquakes. We have seen how the 2011 Virginia earthquake caused minor shaking here, but even moderate events can trigger pore pressure build-up in saturated layers. A proper soil liquefaction analysis in Chatham-Kent is the only way to know if your site has that risk. Before we start any project, we first run a standard penetration test to measure blow counts and identify loose zones. That data feeds directly into the simplified procedure by Youd and Idriss. Our team follows NBCC 2020 seismic hazard maps for the region. Magnitude scaling factors and cyclic stress ratios are calculated per site conditions. The city's flat terrain means high groundwater tables, which makes the analysis even more critical for new subdivisions and industrial lots.
A factor of safety below 1.1 means likely liquefaction — we flag those zones immediately so you can design ground improvement or deep foundations.