Roof Point Load Limitation

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.

Roof point load limitation.

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. 15 psf x 14ft 210 pounds per lineal foot. 50 psf x 14ft 700 pounds per lineal foot. 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 ceiling construction requirements are listed in california residential code chapter 8. 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. Roof pitch is expressed as a ratio of the amount of the roof s vertical rise over a corresponding horizontal distance called the run pitch is written assuming a run of a foot or 12 inches so the ratio describes how much the roof rises for every foot of its run. 910 pounds per lineal foot.

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.