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unsultyPlerry by unsultyPlerry on 2013-08-10 19:37:58
The plywood sheathing braces the trusses and distributes loads between them, as they support the sheathing and roof covering. The edges of the roof on all sides extend beyond the building walls, which carry its weight. A structural member or assembly that is unsupported on one side or one end is said to be a "cantilever." http://renesans.comuf.com The cantilevered parts of the roof are its least stable parts, whether the roof is of truss construction or of the more traditional methods using rafters.