Guidance on waterproof basement construction and ground gas

Waterproof basement construction is, in many cases, inherently resistant to ground gas ingress. A simple process to design waterproof basements that also provide gas resistance is explained in this Ground Gas Information Sheet. The method does not require any special site investigation or characterisation of gas risk to be completed, over and above that which would normally be completed for any development. Detailed Quantitative Risk Assessment is only likely to be required where higher risk gas sources are present or if the gas protection system requires value engineering to rationalise it (or remove it altogether).

Download our paper on Waterproof basement construction.

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