In Wigan, our geotechnical laboratory testing supports site investigation by delivering accurate physical and index property data on soils recovered from the region’s Coal Measures drift geology and glacial till deposits. This category covers the essential classification tests required to satisfy UK specification NHBC Standards and BS 5930, starting with grain size analysis (sieve and hydrometer) to define the full particle-size distribution curve. We also routinely determine Atterberg limits to assess the plastic and liquid behaviour of cohesive soils, which is critical for identifying shrink–swell potential in the Wigan area.
These laboratory determinations directly inform foundation design, earthworks specification, and drainage assessments for residential developments, highway schemes, and commercial builds across the borough. Whether evaluating reworked glacial materials for engineered fill or characterising natural clay for retaining wall design, reliable index testing underpins compliant, cost-effective solutions. Our facility pairs classification with strength and chemical testing to provide a complete soil profile from a single source, reducing programme risk for ground investigation contractors and consulting engineers working throughout Greater Manchester.