Roof Point Load Limitation

The standard guide in the u s the asce 7 05 lists weights and stresses for all building materials expressed in pounds per square foot.

Roof point load limitation.

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. 910 pounds per lineal foot. 50 psf x 14ft 700 pounds per lineal foot. Flat roof snow loads of 30 psf 1 44 kn m 2 or less and roof live loads of 30 psf 1 44 kn m 2 or less need not be combined with seismic loads.

15 psf x 14ft 210 pounds per lineal foot. These requirements cover the design and construction of roof ceiling systems including roof framing roof drainage roof sheathing ceiling finishes roof ventilation and attic access. Calculating the load on a flat roof is a challenging task for the layperson that involves knowledge of building materials their weights and local building codes. Roof ceiling construction requirements are listed in california residential code chapter 8.

Crane hook loads need not be combined with roof live loads or with more than three fourths of the snow load or one half of the wind load.