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Abstract
From an engineering perspective, hail with sufficient mass, hardness, and impact energy can dent or rupture (tear) metal roofing materials. Haag Engineering began its ice ball impact testing program for roofing in 1963. Haag’s impact testing of metal panels in good to fair condition has demonstrated that the typical threshold size for hail necessary to rupture metal panels in good to fair condition is at least 2.5 inches. This testing involved perpendicular impacts of frozen solid ice balls—a worst-case scenario—traveling at their freefall velocities.
From an engineering perspective, hail with sufficient mass, hardness, and impact energy can dent or rupture (tear) metal roofing materials. Haag Engineering began its ice ball impact testing program for roofing in 1963. Haag’s impact testing of metal panels in good to fair condition has demonstrated that the typical threshold size for hail necessary to rupture metal panels in good to fair condition is at least 2.5 inches. This testing involved perpendicular impacts of frozen solid ice balls—a worst-case scenario—traveling at their freefall velocities.
Date
8/2018
8/2018
Author(s)
Justin Kestner
Justin Kestner
Page(s)
1-1
1-1
Source
Haag Engineering
Haag Engineering
Keyword(s)
hail; engineering; roof
hail; engineering; roof