15 psf x 14ft 210 pounds per lineal foot.
Live and dead load for residential roofs.
The total dead plus live loads equal the gravity load of the structure.
50 psf x 14ft 700 pounds per lineal foot.
910 pounds per lineal foot.
Building materials are not dead loads until constructed in permanent position.
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.
Natural and engineered wood rest relatively lightly on the foundation but support less live loads than steel and concrete.
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.
Live loads are usually unstable or moving loads temporary loads and based on the functionality of the structure.
The values for dead loads in table 3 2 are for commonly used materials and constructions in light frame residential buildings.
Structural steel offers much less of a dead load and provides superior support for live loads in multi story buildings.
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 conventional clay tile roofing.