Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages |
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Page 8
Hail resistance of built - up roofs visual inspection F , Felta cracked . TABLE 4. Threshold of hail damage for nonbituminous roofing y. Hail damage indentation size Hailstone size , in ( cm ) 1 % ( 8.8 ) 1 % ( 4.5 ) 2 ( 5.1 ) 2 % ( 6.4 ) ...
Hail resistance of built - up roofs visual inspection F , Felta cracked . TABLE 4. Threshold of hail damage for nonbituminous roofing y. Hail damage indentation size Hailstone size , in ( cm ) 1 % ( 8.8 ) 1 % ( 4.5 ) 2 ( 5.1 ) 2 % ( 6.4 ) ...
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Threshold of hail damage for nonbituminous roofing y - in ( 0.3 cm ) Asbestos cement shingles .. Y - in ( 0.6 cm ) Asbestos cement shingles ... 12 in x 18 in x % in ( 31 cm x 46 cm x 0.6 cm ) Green slate , 7 - in ( 18 cm ) exposure .
Threshold of hail damage for nonbituminous roofing y - in ( 0.3 cm ) Asbestos cement shingles .. Y - in ( 0.6 cm ) Asbestos cement shingles ... 12 in x 18 in x % in ( 31 cm x 46 cm x 0.6 cm ) Green slate , 7 - in ( 18 cm ) exposure .
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Bibliographic information
| Title | Hail Resistance of Roofing Products Volume 23 of Building science series, United States National Bureau of Standards Volume 23 of National Bureau of Standards building science series |
| Author | Sidney H. Greenfeld |
| Contributor | Institute for Applied Technology (U.S.). Building Research Division |
| Publisher | Building Research Division, U.S. Institute for Applied Technology, 1969 |
| Original from | the University of Michigan |
| Digitized | 18 Aug 2006 |
| Length | 9 pages |
| Export Citation | BiBTeX EndNote RefMan |