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Use approval listings to select the appropriate roof system. Select a roof system with a tested capacity that meets or exceeds the design wind loads.

Select roof systems that have been tested in accordance with code-approved test methods by accredited testing laboratories.Select roof systems that have capacity greater than the loads acting on the building.(See Determining Resistance for more information.) Don’t mix and match methods for instance, don’t use the wrong wind map with the online application that you are using.Providing this information on the construction documents ensures the contractor and manufacturer (together or separately) can provide an appropriate roof system with tested capacity. This process results in Design Wind Pressures for each roof zone and determines the dimensions for each of the zones (although not discussed in here).