UL 1897 Uplift Tests for Roof Covering Systems

standard by Underwriters Laboratories, 01/01/1998

Full Description

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The test method specified in this Standard is intended to provide uplift resistance data for the evaluation of the attachment of roof covering systems to roof decks byusing differential air pressures. It is applicable to any type of roofing system which is adaptable to the test equipment.

The test evaluates the roof covering systems method of attachment, including all components such as base sheets, ply sheets, slip sheets, membranes, etc. andinsulation, if used. Supporting roof decks are evaluated only with respect to span conditions and physical properties such as gauge, yield strength, grade, size and/orspecies of lumber and related factors which affect fastener attachment or bond strength.

This test method provides a comparative measure of the uplift resistance for roofing systems by means of static differential pressure. The method does not necessarilysimulate the actual dynamic uplift pressures encountered by roofing systems. Uplift pressures on a roofing system are dependent upon many factors such as windgusts, building shape, edge configuration, and the terrain surrounding the building. A method to calculate the uplift pressures on roof assemblies is contained in theStandard for Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineers, ANSI/ASCE 7.

Product Details

Edition: 4th Published: 01/01/1998 Number of Pages: 11