Psf Roof Load Shed Roof

Thus a roof designed to carry a snow load of 20 lbs.

Psf roof load shed roof.

Factors that influence. An inch of water depth weighs 5 2 lbs. When building a structure it is important to calculate wind load to ensure that the structure can withstand high winds especially if the building is located in an area known for inclement weather. However if the attic is intended for storage the attic live load or some portion should also be considered for the design of.

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. For example appendix a indicates that one type of clay tile roof system has a live load value of 20 psf and a dead load value of 15 psf. Per horizontal square foot is expected to support nearly 12 inches of wet heavy snow. See figure 1 headers.

2attic loads may be included in the floor live load but a 10 psf attic load is typically used only to size ceiling joists adequately for access purposes. In order for a structure to be sound and secure the foundation roof and walls must be strong and wind resistant. Many factors influence how a system responds to loading. Af pa s appendix a lists a variety of live and dead load combinations for floors ceilings and rafters.

As shown in the technical drawing below the reeds ferry standard roof has a load capacity rated at 110 pounds psf more than the highest code requirement. On a roof with a slope greater than 4 to 12 the live load limit is typically adjusted downward from 20 psf to 15 psf to allow for the relatively greater dead load on the steeper roof. It is measured in pounds per square foot psf. Arch 331 note set 13 1 s2014abn 5 location 2uniform load psf kn m roofs ordinary flat pitched and curved roofs roofs used for roof gardens.

All loads are listed as pounds per square foot of horizontal projection footprint area. 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.