Roof Load Width Formula

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 load width formula.

Measure the length and width of the carport to determine the area of the roof in square feet. 50 psf x 14ft 700 pounds per lineal foot. Both sides of the equation should be equal in order to end up with a stable and secure roof structure. 910 pounds per lineal foot.

Snow load thickness density the result snow load or the pressure exerted by the snow has the units of kn m or lbs ft. Step 2 determine dead load by identifying the amount of each construction material used in the roof. Multiply the length by the width to get the measurement for the area. Roof load area rlw u p span left u p span right or with fan struts.

You can also find the load per square meter or square foot of roofing by opening the advanced mode. 15 psf x 14ft 210 pounds per lineal foot. If you want to calculate these values by hand use the following formulas. Roof load width rlw rafter span if placed at midspan otherwise span1 span2.

Rlw is used to calculate the sectional size of some roof members and supporting wall. This is the sixth video in the series on the timber framing code.