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Re: wood strength of oak or fir
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Posted by big fred on January 15, 2004 at 12:48:24 from (130.76.64.16):
In Reply to: wood strength of oak or fir posted by Josh on January 15, 2004 at 09:47:17:
By increasing the height of the beam, you are increasing the moment of inertia. The strength of the beam is directly proportional to the moment of inertia and to the yield stress. Since you are increasing the moment of inertia by a factor of 4 by going from 2x4 up to 2x6, you will end up with a stronger beam unless you decrease the yield strength by a factor of 4 by using a different material. Most any wood you choose (except maybe cork) should be more than adequate. Tell ya what'd look sharp is redwood.
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