Roof Load Width Formula

In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing.

Roof load width formula.

This is the sixth video in the series on the timber framing code. If you want to calculate these values by hand use the following formulas. 50 psf x 14ft 700 pounds per lineal foot. It is often compared to slope but is not exactly the same.

2x4 2x6 2x8 2x10 2x12. If the number of members is labeled m and the number of nodes is labeled n this can be written as m 3 2 n. You can also find the load per square meter or square foot of roofing by opening the advanced mode. Snow load thickness density the result snow load or the pressure exerted by the snow has the units of kn m or lbs ft.

Roof load width rlw rafter span if placed at midspan otherwise span1 span2. Roof load area rlw u p span left u p span right or with fan struts. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. 15 psf x 14ft 210 pounds per lineal foot.

910 pounds per lineal foot. 3 stud construction standard utility. Both sides of the equation should be equal in order to end up with a stable and secure roof structure. Step 2 determine dead load by identifying the amount of each construction material used in the roof.

This video looks at roof load width rlw. Load limits on the roof of a building. For instance a 7 12 roof pitch means that the roof rises 7 inches for every. Multiply the length by the width to get the measurement for the area.

Rlw is used to calculate the sectional size of some roof members and supporting wall. Measure the length and width of the carport to determine the area of the roof in square feet. Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run. Roofs are under a lot of pressure.

L 720 l 600 l 480 l 360 l 240 l 180. Spacing in 12 16 19 2 24.