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MWFRS and C&C wind loading: more k[l][Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: MWFRS and C&C wind loading: more k[l]
- From: "Conrad Harrison" <sch.tectonic(--nospam--at)bigpond.com>
- Date: Fri, 9 May 2008 15:58:56 +0930
I missed that k[l] also
applies to the net pressure coefficients on free roofs (open buildings to ASCE7-05).
Whilst failing of the cladding may make an enclosed building an open building
and increase loading on the frame which is still clad. For a canopy: local
failure of the cladding can lead to large portions of the cladding peeling off:
whilst this reduces the load on the primary frame, it increases the potential
for cladding to become airborne. Airborne Steel cladding caused some major
injuries during cyclone
So that a primary objective of our wind loading code is to keep all parts of the building anchored to the owner's property, and prevent it from becoming airborne debris which causes injuries to the public at large.
So C&C pressures are for localized effects, not small structures.
B.Tech (mfg & mech), MIIE, gradTIEAust
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