Resistance for wind pressures
Serviceability Test
When the cladding system is subjected to the Uniformly Distributed Load (UDL) test load as prescribed in Wind and Point Load Testing none of the following must occur:
Permanent local deformation (except within residual deflection limits).
De-indexing or unclipping.
Fracture or failure of any part of the cladding.
Fastener Failure.
Strength Test
When the cladding system is subjected to the test pressure for strength limit state (as specified in Wind and Point Load Testing), the pressure must be sustained, notwithstanding any permanent distortion that might occur in the sheeting and fastenings.
Type A:
Unrestricted access, where a person may walk anywhere on the roof cladding.
Type B:
Restricted access, where access is restricted to walking within 300 mm of the purlin line or in the pan of the profile.
Type 3:
Areas for which support ladders or boards are required for maintenance access (including transparent surfaces) 0.5 kN.
Type 3, no Access':
Roofs that are not readily accessible which include plastic sheeting, roof surfaces with a pitch of more than 35°; or that are regarded as unsafe or unable to be walked or worked on without special provisions being made. Walls are included in this category.
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