Montana Roof Snow Load

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.

Montana roof snow load.

To figure out the load on your roof take the depth of snow in feet and multiply it by the weight of a cubic foot of snow. Local and or state requirements on the ground snow loads or roof loads supercede the values provided by this tool. A great deal of confusion currently exists among engineers architects recreation specialists and maintenance personnel concerning the proper snow loading to use for the design and maintenance of trail bridges building roofs and other structures in mountainous high snow load areas. If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow.

You can click on the map below to find the design ground snow load for that location. Note that the state of montana requires a minimum roof snow load of 30 psf be used for design. Snow loads for structural design in montana revised 2004 gregory p. If the snow weighs 10 pounds per cubic foot and there are 1 5 feet on the roof each square foot of the roof is getting 15 pounds of pressure.

Basic ground snow load. In areas of the state outside of certified city county and town jurisdictions the design snow load shall be based on the ground snow loads developed in snow loads for structural design in montana civil engineering department montana state university 2004 revised edition. Local and or state requirements on the ground snow loads or the roof loads subsequently calculated from these values supercede the values provided by this snow load finder tool. Based on 100 year 1 hour rainfall of 1 22 inches frost depth 3 ft 1 story building 4 ft 2 story building.

40 psf roof design. In areas of the state outside of certified local government jurisdictions the design snow load shall be based on the ground snow loads developed in snow loads for structural design in montana authored by f f. 24 301 146 for any location in the state of montana. Snow loads shall be determined by the building official.

The minimum design roof snow load. Montana ground snow load finder. 46 psf per snow loads for design in montana f f. Why snow load information.