Describes the format and scope of a database of predominantly technical information relating to subsidence and heave claims on shrinkable/expansible clay soils. The database includes information on 484 individual subsidence claims, comprising details of the property and its structure, the damage, ground and foundation conditions, vegetation, and monitoring and remedial measures. The data are analysed and implications for the investigation of subsidence claims are examined. The analyses indicate that, among other results: detached properties have greater susceptibility to subsidence or heave claims than non‐detached properties; properties built prior to 1900 are less susceptible to damage than those built in the 1900‐1944 period; there are no reasons to be concerned over current minimum depth requirements for construction in shrinkable/expansible clays; and London clay is the most commonly encountered “problem” soil.
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