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John Fitzgerald
In Focus
Reged: 01/04/04
Posts: 1253
Loc: AR
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Re: New build - advice please
07/02/08 11:09 PM
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The roof and walls should be thought of as independent objects. The roof of a roll off only rides on the walls, it gives the walls very little support, and the walls give the roof very little compressive support. If there are no cross pieces at the bottoms of the roof supports (trusses) the roof will want to splay outward. IMO vaulted type ceilings are a no-no for roll-offs, and only invite trouble. If the roof starts to splay outward at the bottom, the wheels will tend to climb up off the track and the roof may come off and be damaged or destroyed. The walls need to have horizontal bracing in the corners also. In a normal shed, the walls and roof mutually brace each other. Since in a normal shed each truss is firmly attached to the top of the wall, the wall cannot splay outward, and neither can the roof. Just my opinion, and that of the architect and the structural engineer who both helped me in the design and build.
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Observing since 1966
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