Asphalt shingles shall be tested in accordance with ASTM D7158. Asphalt shingles shall meet the classification requirements of Table R905.2.4.1 for the appropriate ultimate design wind speed. Asphalt shingle packaging shall bear a label to indicate compliance with ASTM D7158 and the required classification in Table R905.2.4.1.
CLASSIFICATION OF ASPHALT ROOF SHINGLES
|MAXIMUM ULTIMATE DESIGN WIND SPEED, Vult FROM FIGURE R301.2(4)A (mph)||MAXIMUM BASIC WIND SPEED, VASD FROM TABLE R301.2.1.3 (mph)||ASTM D7158a SHINGLE CLASSIFICATION||ASTM D3161 SHINGLE CLASSIFICATION|
|110||85||D, G or H||A, D or F|
|116||90||D, G or H||A, D or F|
|129||100||G or H||A, D or F|
|142||110||G or H||F|
|155||120||G or H||F|
For SI: 1 foot = 304.8 mm; 1 mph = 0.447 m/s.
- The standard calculations contained in ASTM D7158 assume Exposure Category B or C and building height of 60 feet or less. Additional calculations are required for conditions outside of these assumptions.