Technical specification for boundary elevations (PDF)

This technical Specification covers the structural design requirements for single storey structures in a “boundary” condition, when spread of fire from inside a building (and in some cases from outside a building) must be prevented.

This technical Specification covers the design requirements for the primary frame, the secondary steelwork (side rails and purlins) and the external wall cladding.

This Specification is presented here in its 1st edition, and comes into force on the 1st July 2025.

Edition Number: 1st edition

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