Proctologically Violated©® wrote:
Awl--

When choosing beams for supporting roofs, floors, etc, what is an acceptable
deflection over a given length?

I'm looking at a 12 ft beam, supported at 0, 6, 12 ft, and depending on the
beam I choose (and various point/distributed loads), I'm winding up w/
deflections of between .010 and .033 between supports, ie, at about 3 and 9
ft.

What is acceptable? Is this a matter of local codes, or do rules-of-thumb
apply here?
--
Mr. P.V.'d
formerly Droll Troll

0.010 and 0.033 inches? My gut reaction is that this is fine. Some
overhead rolling cranes deflect by this much. But someone will probably
shoot me for saying this without knowing every detail of your design :-).

Chris