Coventry sits on a varied geology of glacial till, alluvial sands, and river terrace deposits that can be susceptible to liquefaction under seismic loading. With a population exceeding 370,000 and ongoing urban regeneration, understanding this risk is critical before any foundation design. Our soil liquefaction analysis evaluates the cyclic strength of granular layers using SPT-based correlations and vs30/" data-interlink="1">shear wave velocity measurements. We combine field data with advanced laboratory testing to identify zones where loose, water-saturated sands might lose bearing capacity during an earthquake. This assessment is essential for projects near the River Sherbourne or in areas with high groundwater levels. Before proceeding, we often recommend a complementary MASW-Vs30 survey to map stiffness profiles across the site, and a CPT sounding for continuous stratigraphic detail.
In Coventry's alluvial soils, a 1m rise in groundwater can double the liquefaction potential of loose sand layers.