Composite beam with gap between concrete and steel
Composite beam with gap between concrete and steel
(OP)
Hi,
I am designing a composite beam with a 5/8" gap between concrete and top of steel beam.
I have 8" concrete slab. I am considering the following factors in design:
1. Bending of studs; and
2. slippage of concrete vs. steel.
Any other things I should consider?
Thanks
I am designing a composite beam with a 5/8" gap between concrete and top of steel beam.
I have 8" concrete slab. I am considering the following factors in design:
1. Bending of studs; and
2. slippage of concrete vs. steel.
Any other things I should consider?
Thanks





RE: Composite beam with gap between concrete and steel
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it
RE: Composite beam with gap between concrete and steel
Compression is a good point.
RE: Composite beam with gap between concrete and steel
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it
RE: Composite beam with gap between concrete and steel
RE: Composite beam with gap between concrete and steel
This looks a bit dodgy, mate. I think that with the other parameters you have to consider with composite design, like loads in construction phase prior to full design loads, propping issues & costs for shear studs etc. that unless this a huge job I would design as non-composite. I also think that the gap between the concrete & the top of the beam is not covered in your average design info. If this is metal deck permanent shuttering is the stud a special or could it be out of its normal design zone? Too many ifs. Ignore the composite action as it could be argued this is not truly composite & you may have a deflection issue.
RE: Composite beam with gap between concrete and steel
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it
RE: Composite beam with gap between concrete and steel
I'd be interested to know why corrosion of the beam is not an issue when protecting the slab with a WPM is required.
RE: Composite beam with gap between concrete and steel
A few clarifications/improvements to the detail:
1. Create pockets of concrete around the stud by starting and the stopping the mirror drain. Bituminous layer will run continuous.
2. Water seepage to floor below is major concern.
3. False work will be provided which will be adequately shored between beams.
4. Check studs for combined shear and bending.
Any other input?
Thanks in advance...
RE: Composite beam with gap between concrete and steel
Arguing with an engineer is like wrestling with a pig in mud. After a while you realize that them like it