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Posted by Kevin Thibeault on December 10, 2006, 10:43 pm
depends do you want the coupla to be open from the inside or not. you could
always use engeneered trusses and the overfreme the coupla
> Hi all,
>
> I have to span a square of about 50 by 50 feet with a roof. The roof
> should have a cupola in the middle.
>
> I am wondering if I can simplify construction of the roof and reduce
> cost by putting up four columns arranged in a much smaller square in
> the middle of the larger square. These columns would form the base of
> the cupola and be tied together on the top by a sturdy wooden square
> frame.
>
> What I am hoping to do is to eliminate large and complex trusses by
> having rafters running from the exterior wall to the columns and tying
> into the frame on the columns directly (somewhat like in a shed roof).
> The cupola will then be erected above the square frame on top of the
> columns. The rafters would have to be about 25 feet long
> and span empty space.
>
> If simple rafters cannot span this, would it at least result in less
> complex and smaller trusses
> that are easier to transport and handle.
> Can I do this and achieve significant cost reduction in the
> construction of the roof.?
>
> If this particular construction does not work can columns be used to
> simplify the construction of the roof in some other way?
>
> What do you think?
>
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