Residential Roof Dead Load

At the time the trusses are sheathed with in.

Residential roof dead load.

Dead loads cont d typical weights of horizontal systems roof construction asphalt shingles 15 psf pounds per sq. Live load on attic floor local requirements. With tar and gravel. 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.

The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings. 50 psf x 14ft 700 pounds per lineal foot. With conventional clay tile roofing. 15 psf x 14ft 210 pounds per lineal foot.

When used for storage only dead load of attic floor not floored 10 lbs. Foot ceiling construction gypsum sheetrock finish 10psf floor construction carpet or vinyl 10 psf hardwood floor 12 psf ceramic tile 15 psf. Dead loads consist of the permanent construction material loads comprising the roof floor wall and foundation systems including claddings finishes and fixed equipment. 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.

It is important to list live load dead load and total load separately because live load is used to compute stiffness and total load is used to calculate strength. Floor live load 40 psf floor dead load 20 psf during construction a 20 piece stack of 5 8 in. 910 pounds per lineal foot.