Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages A test was developed for evaluating the hail resistance of roofings, in which synthetic hailstones (ice spheres) of various sizes were shot at roof assemblies at their free-fall terminal v * elocities.Indentations, granule loss and roofing fracture were observed.The principal conclusion is that:All roofing materials have some resistance to hail damage, but as the size of the hail increases, a level of impact energy is reached at which damage occurs.This level lies in the range of 1 1/2 to 2 inch (3.8-5.1 cm) hailstones for most prepared roofings.(Author). |
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Sidney H. Greenfeld. ARCHITECTURE TH 7 .U58 no.23 B 916,962 Hail , as a destructive force of nature , has. Front Cover.
Sidney H. Greenfeld. ARCHITECTURE TH 7 .U58 no.23 B 916,962 Hail , as a destructive force of nature , has. Front Cover.
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Sidney H. Greenfeld. BUILDING SCIENCE SERIES 23 Architecture TH 258 no.23 Hail Resistance of Roofing Products DEPARTMENT TIONAL OF COMMERCE BUREAU OF STANDARDS קר U.S. DEPARTMENT OF COMMERCE National Bureau of Standards THE UNIVERSITY OF ...
Sidney H. Greenfeld. BUILDING SCIENCE SERIES 23 Architecture TH 258 no.23 Hail Resistance of Roofing Products DEPARTMENT TIONAL OF COMMERCE BUREAU OF STANDARDS קר U.S. DEPARTMENT OF COMMERCE National Bureau of Standards THE UNIVERSITY OF ...
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... Weather Resistance of Porcelain Enamels : Effect of Exposure Site and other Variables After Seven Years . 20 cents BSS5 . Interrelations Between Cement and Concrete Properties : Part 2 , Sulfate Expansion , Heat of Hydra- tion , and ...
... Weather Resistance of Porcelain Enamels : Effect of Exposure Site and other Variables After Seven Years . 20 cents BSS5 . Interrelations Between Cement and Concrete Properties : Part 2 , Sulfate Expansion , Heat of Hydra- tion , and ...
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... Hail Resistance of Roofing Products Sidney H. Greenfeld Research Associate Asphalt Roofing Manufacturers Association * * ( Formerly Asphalt Roofing Industry Bureau ) Building Research Division Institute for Applied Technology National ...
... Hail Resistance of Roofing Products Sidney H. Greenfeld Research Associate Asphalt Roofing Manufacturers Association * * ( Formerly Asphalt Roofing Industry Bureau ) Building Research Division Institute for Applied Technology National ...
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