Roof Design For Snow Load

However many agricultural buildings are built using a 20 psf snow load which would be expected to handle six feet of dry fluffy snow or one foot of wet heavy snow.

Roof design for snow load. Town load town load aguilar 40 idaho springs 50 alamosa 20 ignacio 40. After you obtain the roof slope factor from those sections in asce 7 10 the balanced design snow load for the sloped roof can easily be calculated using equation 74 1. If you live in the us our snow load calculator compares the total weight on your roof with the permissible load calculated according to the standards issued by the american society of civil engineers regarding the minimum design loads for buildings and other structures asce7 16. Modify these basic loads for wind shape of roof drifting ice loads etc.

Loads are in pounds per square foot. And sliding loads where snow slipping off a higher roof inundates a lower one that should be looked at. Metal roofs with chimneys metal roof designs are the most special kind of roof designs for snow which are the latest ones used in most of the houses built nowadays. Estimates for the actual weight of snow range from 1 to 15 psf per inch of depth.

If your structure has a sloped or flat roof you still need to calculate the flat roof snow load. Use only within immediate vicinity of given town particularly if ground elevation changes noticeably. There are of course special cases like deep drift loads on large flat roofs. Recommended basic snow design loads snow loads by city 1.

Snow design loads are based on figures published by the asce.