3) 積雪荷重について

概要

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1. Snow loads should be selected considering the location, the maximum snow height, its specific gravity and the conditions of its structure. 2. The maximum snow height on flat ground and its specific gravity are given in Table A.[table]3. Temporary snow load should be calculated by the product of maximum height and its specificgravity. But in localities where snow lies long, sustairned snaw load should be given, which corresponds to 70% of the temporary snow loads. 4. Snow loads combined with wind load, or earthquake load correspond to 35% of temporary snow loads, 5. Snow loads on the horizontal projection of roofs are given in Table B.[table]c.f. If snow-guards, or roof materials which interrupt snow sliding are used on the roof, loads shoud be considered otherwise. A Due to the effect of wind, snow loads will be reduced by the multiplying factors given in Table C.[table]B. Due to the effect of severe solar radiation, snow loads will be reduced by the multiplying factors given in Table D.[table]C. Less than 25% of snow loads will be reduced by heating. D. Eaves, valleys, shed roofs and other parts of roofs which'are apt to accumulate much snow, should be given larger snow load. E. Take care of unequal snow load on each side of the roof. 6. By removing the roof snow, snow load on the roof will be partially reduced. 7. Large accumulation of snow will sometimes show strong side pressure.
社団法人日本建築学会の論文
1949-11-20