W8x15 Composite Steel Beam
W8x15 Composite Steel Beam
(OP)
We have designed a floor system using a W8x15 composite steel beam. We have ran the numbers and the beam is adequate.
Does anybody know why the Composite W Shape Table 3-19 (pg 3-189) in AISC13 starts at a W10. I just want to make sure that I'm not missing something and that a W8x15 is acceptable.
Does anybody know why the Composite W Shape Table 3-19 (pg 3-189) in AISC13 starts at a W10. I just want to make sure that I'm not missing something and that a W8x15 is acceptable.






RE: W8x15 Composite Steel Beam
At those small sizes, it might be cheaper to throw more steel at it than to make it composite.
RE: W8x15 Composite Steel Beam
RE: W8x15 Composite Steel Beam
The problem lies in connecting the beam to the support. It will have a high shear reaction, and very little depth to get a connection (shear tab, clip angles) in the beam web. You might wind up having to make the reinforce the section, making it deeper, so that you can get a deeper connection in. This is expensive, likely more so than using a deeper beam. This is why AISC doesn't put W8s in these tables, to discourage their use in these applications.
RE: W8x15 Composite Steel Beam
RE: W8x15 Composite Steel Beam
We have a very small margin for error in installing studs on this beam :)
RE: W8x15 Composite Steel Beam
RE: W8x15 Composite Steel Beam
Dik
RE: W8x15 Composite Steel Beam
Will the beam be shored during construction?
RE: W8x15 Composite Steel Beam
When dealing with typical 3/4" dia studs, the flange thickness should be at least 1/4".
RE: W8x15 Composite Steel Beam