Live And Dead Load For Residential Roofs

With tar and gravel.

Live and dead load for residential roofs.

910 pounds per lineal foot. Building materials are not dead loads until constructed in permanent position. 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. These dynamic loads may involve considerations such as impact momentum vibration and etc.

15 psf x 14ft 210 pounds per lineal foot. Natural and engineered wood rest relatively lightly on the foundation but support less live loads than steel and concrete. Live loads are usually unstable or moving loads temporary loads and based on the functionality of the structure. 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.

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. The total dead plus live loads equal the gravity load of the structure. With conventional clay tile roofing.