When to consider laterally supported
When to consider laterally supported
(OP)
I'm trying to design a 40'-0" dropped beam supporting a mezzanine with an overhang. I believe in this case I would be able to consider the beam laterally supported if the joists are properly fastened to the beam although there is would be only top flange support and no bottom flange support. Would this still be adequate to prevent the effects of lateral torsional buckling or just prevent it by a factor and LTB should still be considered in the design. Obviously if it needs both top and bottom flange I would be able to design the bracing to be able to support the bottom flange but I'm just not sure if its necessary.
Any feedback would be much appreciated.
Any feedback would be much appreciated.






RE: When to consider laterally supported
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: When to consider laterally supported
RE: When to consider laterally supported
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: When to consider laterally supported
RE: When to consider laterally supported
RE: When to consider laterally supported
RE: When to consider laterally supported
The joists are 14" TJI, yes they would be bearing on the dropped beam below. You are correct this would not brace the bottom flange but would still resist the beam from LTB from my understanding.
RE: When to consider laterally supported
Appreciate all the imput.
RE: When to consider laterally supported
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: When to consider laterally supported
RE: When to consider laterally supported
Thanks