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ROOF UNIFORM LOAD DISTRIBUTION
These examples use an assumed load of 40# PSF. You will be designing with two sets of loads: Live Loads and Total Loads which are dead load + live load.
The live load appropriate to your locale is specified by your building official. The dead load is the actual weight of the construction materials to be used in the project.
Note: The dead load will increase as the roof pitch increases because the rafters and roof surface become longer. This is especially important when designing for tile and slate roofs which are heavy.
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