Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages |
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Page 5
91 cm ) decks , representative of those used in construction ( 3/8 in ( 1 cm ) and 1/2 in ( 1.3 cm ) plywood , 1 in x 6 in ( nominal ) T & G boards ) . The decks were supported on 2–2 in x 4 in ( nominal ) “ rafters , ” to which they ...
91 cm ) decks , representative of those used in construction ( 3/8 in ( 1 cm ) and 1/2 in ( 1.3 cm ) plywood , 1 in x 6 in ( nominal ) T & G boards ) . The decks were supported on 2–2 in x 4 in ( nominal ) “ rafters , ” to which they ...
Page 6
A number of shingles that had been exposed on 1 / 2 - in ( 1.3 cm ) plywood to the weather in Washington , D. C. for 912 years became available and were tested . These shingles had been exposed at a 4 ...
A number of shingles that had been exposed on 1 / 2 - in ( 1.3 cm ) plywood to the weather in Washington , D. C. for 912 years became available and were tested . These shingles had been exposed at a 4 ...
Page 7
All of these shingles were mounted on 1 / 2 - in ( 1.3 cm ) plywood . Because the vast majority of hailstorms occur in warm weather , the roofs are above ambient temperatures when the hailstorm starts . Hailstorms that produce large ...
All of these shingles were mounted on 1 / 2 - in ( 1.3 cm ) plywood . Because the vast majority of hailstorms occur in warm weather , the roofs are above ambient temperatures when the hailstorm starts . Hailstorms that produce large ...
Page 8
( 1c ) l - in ( 2.5 cm ) Foamboard A on Yin ( 1.8 cm ) plywood . id ) 1 - in ( 2.5 cm Foamboard B on 1 - in ( 1.3 cm ) ... asphalt flood coat ( 20–25 lbs / 8q ( 1.0-1.2 kg / m2 ) interply asphalt ] ( 2a ) y - in ( 1.3 cm ) Plywood .
( 1c ) l - in ( 2.5 cm ) Foamboard A on Yin ( 1.8 cm ) plywood . id ) 1 - in ( 2.5 cm Foamboard B on 1 - in ( 1.3 cm ) ... asphalt flood coat ( 20–25 lbs / 8q ( 1.0-1.2 kg / m2 ) interply asphalt ] ( 2a ) y - in ( 1.3 cm ) Plywood .
Page 9
The plywood deck cracked below the dents with hailstones larger than 2 % in ( 6.4 cm ) . Note tested . All roofings tested were vulnerable to bail damage . As with the asphalt shingles , these other products contained areas of different ...
The plywood deck cracked below the dents with hailstones larger than 2 % in ( 6.4 cm ) . Note tested . All roofings tested were vulnerable to bail damage . As with the asphalt shingles , these other products contained areas of different ...
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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 |