Roof Load Width Flat Roof

Flat roofs should be constructed to provide protection from wind uplift this can be achieved by either being sufficient weight to prevent lifting or by fixing the joists to the wall plates and securing the wall plate with vertical holding down straps at least 1m long and 30mm x 2 5mm in cross section at 2 0m centres.

Roof load width flat roof.

Calculate the carport roof load using a combination of the dead load and live load measurements. Intuitively this is the number of inches of snow on your roof in the place where the cover is the thickest. Lr reduced roof live load per square foot m 2 of horizontal projection supported by the member. For ground snow loads greater than 20 pounds per square foot the roof load is equal to.

This sizing guide for roof rafters will help determine what you need for your small project. Lo unreduced roof live load per square foot m 2 of horizontal projection supported by the member see table 1607 1. Step 4 determine the flat roof snow load. The dead load consists of the actual weight of materials that comprise the roof plus any fixed equipment that the roof supports.

If your roof is pitched enter the length and width of the flat area covered by the roof. Roof loads are used to determine the size of beams joists and columns that support a roof. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter. 0 58 lr 0 96.

There are several variables to consider when determining the proper rafter size. Length and width of your roof.