Steel frame building precast planks
Steel frame building precast planks
(OP)
In design of the internal steel beams do you consider the condition at ULS of bending and torsion induced by the bay on one side of the beam being loaded and the other bay not (no live load)?






RE: Steel frame building precast planks
The beam failed in torsion under partial DL only. Fortunately no on was hurt.
As we don't usually get into means and methods, this was not originally a concern of mine. A design review showed that my beam had plenty of design capacity, once all of the plank were in place, laterally braced through the plank welds, etc.
For the remainder of that project, we asked the contractor to place the plank on each side of the beam, one after the other, so as to keep the load balanced.
I now check unbalanced loads or add additonal steel framing to insure adequate lateral bracing of the support beams.
gjc
RE: Steel frame building precast planks
DaveAtkins
RE: Steel frame building precast planks
RE: Steel frame building precast planks
DaveAtkins
RE: Steel frame building precast planks
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Steel frame building precast planks
That's exactly as most design guidance I have seen tells you to do it, sometimes it doesn't get considered just because it hasn't been considered before, SCI (UK) guidance is to check it.