Roof Load Width

If your roof is pitched enter the length and width of the flat area covered by the roof.

Roof load width.

Length and width of your roof. 8000mm 2 4000mm. You can enter these values in any units you d like including meters and feet. So if the span was 8000mm and the roof pitch 20 degrees then.

You can enter this value either as a ratio x 12 or as an angle whichever suits you better. F stands for the beam s fiber strength in bending which depends on the species of wood. The total load is 4 000 pounds. L stands for the span of the beam in feet.

Rlw is used to calculate the sectional size of some roof members and supporting wall. For the initial calculation f can be estimated at 1 000. Load limits on the roof of a building. Roofs are under a lot of pressure.

If you can t measure along the top chord divide the span horizontally from plate to plate by 2 then with a scientific calculator divide by cos cosine and then the pitch of the roof. This is the sixth video in the series on the timber framing code. Measure the length and width of the carport to determine the area of the roof in square feet. This video looks at roof load width rlw.

Multiply the length by the width to get the measurement for the area. In the example the beam spans the 10 foot width of the roof. Intuitively this is the number of inches of snow on your roof in the place where the cover is the thickest. Step 2 determine dead load by identifying the amount of each construction material used in the roof.