Gas membranes and “compliance” with BS8485

This information sheet looks at whether a gas membrane can comply with BS8485. It is the responsibility of the designer to select a suitable gas membrane for a particular site taking into account the project specific factors. The designer should be appropriately qualified and must also justify the choice of membrane in a design report. A membrane cannot “achieve compliance with BS8485” since BS8485 is not a material specification. The sheet discusses the information that designers require to allow an appropriate choice of membrane. It also discusses the influence of plunger size on puncture and impact tests and the effect of cement on corrosion in aluminium foil membranes.

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