The NZ Metal Roof and Wall Cladding Code of Practice is a comprehensive design & installation guide, and a recognised related document for Acceptable Solution E2/AS1 of the NZ Building Code.
Test results must not be published as load-span data. Before they can be offered as a design guide they must be checked and interpreted by an engineer and have suitable factors applied to the test result figures. It is highly desirable that this person has witnessed at least some of the tests being conducted. As fastener pull-out is not included in testing, published load-span tables should encourage the designer to check for pull out values of specified fasteners when fastening into timber or ply less than 30 mm thick, into composite materials, or into steel sections less than 1.2 mm thick.