Abstract
The phenomenon of accumulated snow sliding off a pitched roof of a building is frequently seen. The occurrence of snow sliding is affected by such factors as atmospheric temperature and temperature inside the attic. In this study, the following investigation was carried out in order to establish a method for evaluating snow load on a pitched roof that takes into account the occurrence of snow sliding. First, it examined about the characteristic of snow sliding resistance. It was found that the occurrence of snow sliding is greatly affected by adfreezing resistance and that this resistance decreases if the atmospheric temperature rises to -2℃ or higher. Next, from these results on adfreezing resistance, we used data on atmospheric temperature obtained from a weather station to calculate the number of days required for snow sliding to occur. In this paper, we propose a method for evaluating snow load on a roof that includes consideration of the number of days required for snow sliding to occur.
