Standard Test Method for Measurement of Asphalt Shingle Mechanical Uplift Resistance

Importancia y uso:

5.1 Uplift resistance is one of the properties of an applied shingle that relates to its ability to withstand wind forces. The mechanical tests described are laboratory methods to measure that resistance at a designated temperature after the shingles have been sealed under designated conditions.

5.1.1 This test method determines the mechanical uplift resistance of sealed shingles by direct measurement in a prescribed manner. See Test Method D7158/D7158M for the relationship between this mechanical uplift resistance and the uplift forces derived from the action of wind.

5.2 Many factors influence the sealing characteristics of shingles in the field; for example, temperature, time, contamination by dirt and debris, roof slope, and interference by misplaced fasteners. It is not the objective of this test method to address all of these influences. This test method is designed to determine the mechanical uplift resistance when representative specimens of shingles are sealed under selected conditions prior to testing.

5.3 Procedure A produces lower results than Procedure B. Procedure A provides an edge-lift load value and Procedure B provides a perpendicular load value. The procedure applicable to a specific product depends on the specific product design, geometry, and rigidity. It is the responsibility of the user of this test method to determine the appropriate procedure with reference to the specific product and application. It is possible that engineering calculations would require both procedures to be employed, and for both results to be used in the calculation of the resistance of that specific product to the effects of wind.

5.4 When using this method in conjunction with Test Method D7158/D7158M to determine the uplift resistance of shingles as part of the determination of wind resistance of the shingles, determine the appropriate procedure (Procedure A, Procedure B, or both) in accordance with the discussion, and examples, of shingle geometry and sealant configuration in Section 12.2 of Test Method D7158/D7158M.

Subcomité:

D08.02

Referida por:

D7158_D7158M-24A

Volúmen:

04.04

Número ICS:

91.100.50 (Binders. Sealing materials)

Palabras clave:

asphalt shingle; factory-applied sealant; field-applied sealant; sealant bond strength; shingle mechanical uplift resistance;