Residential Roof Dead Load

The dead load on a roof is the weight of the roof structure itself along with any permanently attached materials or structures on the roof so it must be designed first of all to support itself.

Residential roof dead load.

Live load on attic floor local requirements. Dead load weight of roof trusses top chord bottom chord webs weight per lineal foot plf 2x4 2x4 2x4 4 3 2x4 2x8 2x4 5 6 2x6 2x4 2x4 4 8 2x6 2x6 2x4 5 5 2x6 2x6 2x6 6 2 2x6 2x8 2x4 5 9 2x6 2x10 2x4 6 6 2x6 2x10 2x6 7 2 2x8 2x8 2x4 6 6 2x8 2x8 2x6 7 2 2x8 2x10 2x8 8 4 dead load weight of floor trusses. Therefore this guide serves as a resource document for residential building designers and as a. Dead load of roof of wood shingle construction 10 lbs.

50 mm by 50 mm. The following table provides typical weights dead load self weight for various roofing materials. D dead load l live load l r live roof load w wind load s snow load e earthquake load r rainwater load or ice water load t effect of material temperature. When used for storage only dead load of attic floor not floored 10 lbs.

With conventional clay tile roofing. Dwellings see residential elevator machine room grating on area of 2 in. 3 3 dead loads dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. With tar and gravel.

Dead loads cont d typical weights of horizontal systems roof construction asphalt shingles 15 psf pounds per sq. Advance residential building design by unifying the current practice of applying design loads improving the level of efficiency in the design effort and promoting cost effective results. Unlike the trussed roof live load and dead load of the rafters and ceiling joists must be accounted for as separate systems. Light frame wood roof with wood structural panel sheathing and 1 2 inch gypsum board ceiling 2 psf with asphalt shingle roofing 3 psf 15 psf.

In a few cases the weights we give were calculated using more general manufacturer data or. Since it is possible to use the attic for storage the live load of the attic floor is set at 20 psf according to code.