Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages |
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Hailstone carriers 2.3 . Hailstone molds - 2.4 . Specimen construction 3. Procedures 3.1 . Shooting hailstones at roofing 3.2 . Evaluating failure 4. Results 4.1 . Asphalt shingles 4.2 . Built - up roofs Page 1 3 3 3 4 4 5 5 5 5 6 7 8 9 ...
Hailstone carriers 2.3 . Hailstone molds - 2.4 . Specimen construction 3. Procedures 3.1 . Shooting hailstones at roofing 3.2 . Evaluating failure 4. Results 4.1 . Asphalt shingles 4.2 . Built - up roofs Page 1 3 3 3 4 4 5 5 5 5 6 7 8 9 ...
Page 3
Hailstone Carriers of a metal frame of 34 - in ( 1.9 cm ) angle iron on which are mounted two microswitches 2.0 ft The hail carriers were made from 3 - in ( 7.6 ( 61 cm ) apart . The actuating levers on the cm ) diameter foamed ...
Hailstone Carriers of a metal frame of 34 - in ( 1.9 cm ) angle iron on which are mounted two microswitches 2.0 ft The hail carriers were made from 3 - in ( 7.6 ( 61 cm ) apart . The actuating levers on the cm ) diameter foamed ...
Page 4
Thus , when the two hemicylinders were reassembled , they formed carriers for the several sizes of hailstones and ... carrier and the 134 - in ( 4.5 cm ) hailstones , in the 2 - in ( 5.1 cm ) carrier . tainer and sliced through with a ...
Thus , when the two hemicylinders were reassembled , they formed carriers for the several sizes of hailstones and ... carrier and the 134 - in ( 4.5 cm ) hailstones , in the 2 - in ( 5.1 cm ) carrier . tainer and sliced through with a ...
Page 5
... in front of the test specimen size was taken from the freezer , cleaned of any also were calculated and recorded . burrs or projecting pieces of ice ( from the gate in the mold ) , weighed , and placed in its carrier , 3.2 .
... in front of the test specimen size was taken from the freezer , cleaned of any also were calculated and recorded . burrs or projecting pieces of ice ( from the gate in the mold ) , weighed , and placed in its carrier , 3.2 .
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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 |