Explain 40lbs Snow Load For Roof

The load would still be assumed distributed for design purposes at 100 pounds sq.

Explain 40lbs snow load for roof.

This value must not be greater than the bearing capacity of the soil. The dead load on a floor is determined by the materials used in the floor s construction. The decks and patio covers that i was building in a 30 lbs. The roof will have a 6 12 pitch.

The ground snow load will be 40psf the rafter span is 16. A typical wood frame floor covered with carpet or vinyl flooring has a dead load of about 8 pounds per square foot. Would be different however. The structural details of a walkway designed to support 100 pounds sq ft.

Is that the ground load or the roof load. Light fluffy snow may only weigh about seven pounds per cubic foot. Versus one which can support a concentrated load of 3000 lbs. 2 you must determine the snow load for your region.

Ice buildup adds weight rapidly he adds. More average snow may weigh 15 pounds per cubic foot and drifted compacted snow may weigh 20 pounds or more he notes. So consider a simple gable roof on a 24 foot wide ranch framed with 2 6 exterior walls and a 1 1 2 ridge. It then determines the total load from each tributary area based on the design load of your deck.

Flat roof dead load. They will use asphalt shingles and the total dead load will be 10psf. The height of the peak is 8. Back in 05 or 06 the ubc went away and was replaced by the irc.

The total load for each tributary area is then divided by the area of each footing in order to determine the load psf imposed on the soil. You are given plans for a home with a simple gable roof. This information is found in the code book. 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.

The span would be 11 5 3 4. If your roof is 1 000 square feet the total snow load is 15 000 pounds of snow. The engineer says to watch for very deep. A lot of things changed when that happened.

The decision to shovel off a roof is a case by case decision he says. If there s wall board covered ceiling suspended from the underside of that floor the dead load increases to about 10 pounds per square foot. 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. Default is 50 psf which you can change.