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Hadden issue

Letters

Let me clarify the comments I made at the recent ICE/CIBSE conference on building security (NCE last week).

Building facades are commonly procured by performance specifications that cover a wide range of criteria, sometimes including bomb blast protection. Our experience is that among some facade contractors and their suppliers, understanding of blast effects is patchy.

My suggestion at the conference was that, as an industry, we need to develop a framework within which performance specifications for blast protection can be reliably used without confusion and to maintain (not avoid) continuity from conception to installation of the facade design.

David Hadden (M) associate director, Arup Security Consulting, 13 Fitzroy Street, London W1T 4BQ

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