Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages |
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Page 1
( c ) The solidly supported areas of roofing tend to be the most resistant to hail damage . ( d ) Heavier shingles tend to be more hail - resistant than Type 235 shingles . ( e ) Weathering tends to lower the hail resistance of asphalt ...
( c ) The solidly supported areas of roofing tend to be the most resistant to hail damage . ( d ) Heavier shingles tend to be more hail - resistant than Type 235 shingles . ( e ) Weathering tends to lower the hail resistance of asphalt ...
Page 3
This type of storm tends to drop its hailstones at about 6000 ft . Figure 1 is a map of the central United States showing the distribution of storms during the years 1960–1966 in which at least $ 5000 worth of building damage was done ...
This type of storm tends to drop its hailstones at about 6000 ft . Figure 1 is a map of the central United States showing the distribution of storms during the years 1960–1966 in which at least $ 5000 worth of building damage was done ...
Page 5
... those that do damage tots are tabulated below as taken from these graphs buildings tend to fall within the narrow limits for the hailstone sizes used : of ice spheres falling at about their free - fall terminal velocity [ 9 ] .
... those that do damage tots are tabulated below as taken from these graphs buildings tend to fall within the narrow limits for the hailstone sizes used : of ice spheres falling at about their free - fall terminal velocity [ 9 ] .
Page 6
As shingles age during exposure they tend to undergo a number of physical changes , which may affect their resistance to hail . A number of shingles that had been exposed on 1 / 2 - in ( 1.3 cm ) plywood to the weather in Washington ...
As shingles age during exposure they tend to undergo a number of physical changes , which may affect their resistance to hail . A number of shingles that had been exposed on 1 / 2 - in ( 1.3 cm ) plywood to the weather in Washington ...
Page 7
Thus , the results on these three shingles indicate that shingles tend to be more resistant to hail damage at higher temperatures . It is fortunate that hailstorms occur in warm weather . 4.2 . Built - Up Roofs Occasionally in ...
Thus , the results on these three shingles indicate that shingles tend to be more resistant to hail damage at higher temperatures . It is fortunate that hailstorms occur in warm weather . 4.2 . Built - Up Roofs Occasionally in ...
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15 cents apparatus Applied approximate areas asbestos cement asphalt Base sheet better building Built-up roofs Bureau of Standards carrier cast caused Center cents Class compressed Concrete consists construction contain conventional counter cracking cylinder deck dents developed diameter divisions Effect energy Evaluating failure fall Fiberboard figure Fire float flood coat formed freezing glass fiber Government hail damage hail resistance hailstones Hailstorms impact increases indentation industry Institute insulation interply kg/m l-in larger layer lbs/sq materials measurement membrane metal Meteorol mold National Bureau occur Office organic felt performed permitted physical plywood preparation Processing Properties provides Reference reported Research Resistance of Roofing resistant to hail shingles showed sizes slag solidly specimen stones storm structure substrates supported surface tape technical Technology tend terminal velocities tested Type underlayment United usually various vulnerability Washington weather
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 |