Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages |
From inside the book
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Page 1
... Sidney H. Greenfeld A test was developed for evaluating the hail resistance of roofings , in which synthetic hail . stones ( ice spheres ) of various sizes were shot at roof assemblies at their free - fall terminal velocities .
... Sidney H. Greenfeld A test was developed for evaluating the hail resistance of roofings , in which synthetic hail . stones ( ice spheres ) of various sizes were shot at roof assemblies at their free - fall terminal velocities .
Page 3
... it falls to earth , usually at a velocity approximating the free - fall terminal velocity [ 9 ] . ... He fired these missiles at various velocities at building materials with a grenade launcher and determined the threshold energy of ...
... it falls to earth , usually at a velocity approximating the free - fall terminal velocity [ 9 ] . ... He fired these missiles at various velocities at building materials with a grenade launcher and determined the threshold energy of ...
Page 5
Terminal velocities and energies of hailstonesa The density of large hailstones has been Approximate Diameter Terminal velocity impact shown to approximate that of solid ice [ 10 ] and seems to range between 0.89 and 0.91 ft / s ( m ...
Terminal velocities and energies of hailstonesa The density of large hailstones has been Approximate Diameter Terminal velocity impact shown to approximate that of solid ice [ 10 ] and seems to range between 0.89 and 0.91 ft / s ( m ...
Page 6
All of the results reported are based on hailstones of a given size traveling at velocities within + 10 percent of the terminal velocities reported in table 1 for hailstones of that size . The results are reported under the types of ...
All of the results reported are based on hailstones of a given size traveling at velocities within + 10 percent of the terminal velocities reported in table 1 for hailstones of that size . The results are reported under the types of ...
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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 |