Loads From Incline Roof

Technically you should use the actual rafter length when adding up the weight of roofing materials.

Loads from incline roof. However in my practice i typically use the horizontal run of the roof for both types of load. For dead loads you are correct. The final roof design loads shall not be less than 20 psf after all reductions are factored except for lyon storey counties. The sloped roof snow load p s shall be obtained by multiplying the flat roof snow load p f by the roof slope factor c s.

In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing. Ground snow loads p g for northern nevada locations 1. To do this i use conservative too heavy dead loads and full snow loads regardless of pitch. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally.

Intermediate values may be interpolated by proportion. Pitch angle incline slope they all can be used to refer to the steepness of a roof. P s c s p f the thermal factor c t from table e 3 determines if a roof is cold or warm slippery surface values shall be used only where the roof s surface is unobstructed and sufficient space is.