UL 580-2013 pdf download -Tests for Uplift Resistance of Roof Assemblies.
7.2 For a Class 1 5 rating, the test pressures shall not exceed the specified values by more than 0.2 inch of water (49.8 Pa) for any test phase, the average pressure shall not vary by more than 0.1 5 inch of water (37.3 Pa) from the specified values. For a Class 30, 60, or 90 rating the test pressures shall not exceed the specified values by more than 0.31 inch of water (77.2 Pa) for any test phase, the average pressure is not to vary by more than 0.25 inches of water (62.2 Pa) from the specified values. 7.3 Upon completion of each 60 minute oscillation phase and at the conclusion of each Class level, the assembly is to be examined and observations recorded. 7.4 Vertical movement of the assembly during the test is to be recorded. 7.5 Repairs or modifications, except to stop air leakage along the periphery, are not to be made to the assembly during the test. TEST ASSEMBLY 8 Construction Features 8.1 The test assembly is to be representative of the construction for which classification is required as to materials, workmanship, and details such as dimensions of parts, and shall be built under conditions representative of those in building construction. Properties of the materials and ingredients used in the test assembly together with their location and method of attachment are to be determined and recorded. 8.2 The dimensions of the test assembly are to be a minimum of 1 0 by 1 0 feet (3.05 by 3.05 m). The test assembly shall contain side and end joints when such occur in field installation. The test assembly shall consist of secondary bearing members, such as purlins and joists, to which the roof decking is fastened or on which insulation and roof coverings are applied. 8.3 The assembly components, including secondary members, are to be located to best represent field installations within the restraints provided by the test frame.