It would be in your county code books. They will list not only the size of
the joists, but the distance between joists for both laminated and
dimensional lumber. You might consider steel joists. You will need fewer of
them and they will be stronger. Plus you can hang an engine hoist from one
of them.
Ira.
BTW, will return to the Kotel to accomplish your request. Hope it speeds you
recovery :)
On Fri, Dec 25, 2009 at 9:00 PM, <Awgertoo@aol.com> wrote:
> I am doing preliminary design of a garage and have a question for the
> smart guys here:
>
> The building will be of frame construction and will be 25' wide. I would
> like to put a loft with a plywood deck over a portion of the main
> floor--the
> dimensions of the loft being 25' square. The loft would be used for light
> storage with weight being exclusively on the sides and no appreciable
> weight in the center. I could tolerate some floor bounce if need be.
>
> Here's the question: What size floor joists or fabricated wood trusses
> would I need to adequately support the loft without any columns to the
> concrete
> floor below--in other words using a free span--and on what centers would
> they need to be?
>
> I have read from one site that 16" floor trusses on 24" centers will span
> 27-1/2'. Any input appreciated.
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I Erbs
Portland, OR
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