1504.1 Wind Resistance of Roofs
Asphalt shingles shall be tested in accordance with ASTM D7158. Asphalt shingles shall meet the classification requirements of Table 1504.1.1 for the appropriate maximum basic wind speed. Asphalt shingle packaging shall bear a label to indicate compliance with ASTM D7158 and the required classification in Table 1504.1.1.
|MAXIMUM BASIC WIND SPEED, V,
FROM FIGURES 1609.3(1)-(8) OR ASCE 7(mph)
|MAXIMUM ALLOWABLE STRESS DESIGN WIND
SPEED, Vasd, FROM TABLE 1609.3.1 (mph)
|ASTM D7158a CLASSIFICATION||ASTM D3161 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.