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Abstract
Six test roofs of two different slopes and three different roof coverings - asphalt shingles, cedar shingles and corrugated aluminum sheeting - were constructed at USACRREL and were instrumented with thermocouples, heat-flow meters and calibrated gutters. Measurements were recorded for the winter of 1971-72 and 1972-73. The degree of icing and the chronological changes in the snow cover were recorded on 35-mm Kodachrome slides. It was found that eave icing is a sensitive function of the slope, roof covering composition and solar radiation. The effects of wind were not investigated; the data were screened to remove all information corresponding to windspeeds over 8 kilometers per hour. In order of increasing tendency to form ice dams on the eaves, the roofs were high-slope asphalt, high-slope cedar, high-slope aluminum, low-slope asphalt, low-slope cedar and low-slope aluminum.
Six test roofs of two different slopes and three different roof coverings - asphalt shingles, cedar shingles and corrugated aluminum sheeting - were constructed at USACRREL and were instrumented with thermocouples, heat-flow meters and calibrated gutters. Measurements were recorded for the winter of 1971-72 and 1972-73. The degree of icing and the chronological changes in the snow cover were recorded on 35-mm Kodachrome slides. It was found that eave icing is a sensitive function of the slope, roof covering composition and solar radiation. The effects of wind were not investigated; the data were screened to remove all information corresponding to windspeeds over 8 kilometers per hour. In order of increasing tendency to form ice dams on the eaves, the roofs were high-slope asphalt, high-slope cedar, high-slope aluminum, low-slope asphalt, low-slope cedar and low-slope aluminum.
Date
7/1979
7/1979
Author(s)
JW Lane; S J Marshal; R H Munis
JW Lane; S J Marshal; R H Munis
Page(s)
40
40
Keyword(s)
eave icing; ice dams; structural design
eave icing; ice dams; structural design