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NW Washington | Do you have a local or state building code? The building code normally specifies the snow load requirement for your area. If you buy a package deal for a building like Morton or someone else there should be an engineer's stamp on the plans that says what snow and wind load the building is designed to with stand. As far as truss spacing goes it is probably six of one and a half dozen of the other. Wider spaced, but stronger trusses need heavier purlins and girts and vise versa. If you are going to insulate and finish the building on inside your design should make that job as easy and inexpensive as possible, and sometimes that is using a stud framed wall. | |
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