Roof Load Width

The total load is 4 000 pounds.

Roof load width.

L stands for the span of the beam in feet. This video looks at roof load width rlw. 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. Rlw is used to calculate the sectional size of some roof members and supporting wall.

Length and width of your roof. Fill in the parts of the formula that are already known. 4000mm 20 cos 4256 71mm. 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. You can enter these values in any units you d like including meters and feet. Step 2 determine dead load by identifying the amount of each construction material used in the roof. 8000mm 2 4000mm.

So if the span was 8000mm and the roof pitch 20 degrees then. Load limits on the roof of a building. In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing. For the initial calculation f can be estimated at 1 000.

Roofs are under a lot of pressure. Multiply the length by the width to get the measurement for the area. Intuitively this is the number of inches of snow on your roof in the place where the cover is the thickest. This is the sixth video in the series on the timber framing code.