Lateral Support for Steel Beam
Lateral Support for Steel Beam
(OP)
Hello,
If a wood member is bolted to the web of a steel beam, and wood joists are fastened to the wood member with hangers on only one side of the beam, what does this do to the moment resistance of the beam? Is the beam considered laterally suppported?
If a wood member is bolted to the web of a steel beam, and wood joists are fastened to the wood member with hangers on only one side of the beam, what does this do to the moment resistance of the beam? Is the beam considered laterally suppported?






RE: Lateral Support for Steel Beam
RE: Lateral Support for Steel Beam
If the floor diaphragm stops short of the beam, then you would have to look at the pull out capacity of the joist hanger to see if it can provide the required bracing load.
RE: Lateral Support for Steel Beam
I'm not convinced that something bolted into the web would qualify. If the wide flange beam twists, then the hangers will do almost nothing to provide restraint against this twist. Right?
Now, if you also have a diaphragm restraining the lateral translation of the top flange, then I would consider it to be braced. But, without that extra support from the diaphragm, I would not feel comfortable with assuming those beams as brace points. At least not after reading that section of the AISC appendix.
RE: Lateral Support for Steel Beam
If the hanger supports the joist at the bottom only, as is likely, the beam's top flange wouldn't be restrained.
RE: Lateral Support for Steel Beam