shear stud location on a composite beam
shear stud location on a composite beam
(OP)
On a composite slab the contractor welded the studs to the edge of the flange rather than the center of the beam. Moreover he poured the slab before we looked at it. My question is, now since the studs are welded off center will this reduce the capacity of my composite beam and is it written somewhere that the studs must be welded to the center of the beam?






RE: shear stud location on a composite beam
I don't see anything on the position with respect to the beam centerline.
RE: shear stud location on a composite beam
* Do they alternate from one side to the other or are they always on the same side of beam center?
* Why did he offset the studs?
* Why did he pour without an inspection?
BA
RE: shear stud location on a composite beam
Did your drawings show or indicate the studs to be centered?
I didn't see anything in AISC Code of Standard Practice. What else did you reference on your Drawings or Specs?
RE: shear stud location on a composite beam
RE: shear stud location on a composite beam
RE: shear stud location on a composite beam
RE: shear stud location on a composite beam
BA
RE: shear stud location on a composite beam
As for the contractor, I do not know what your directions were to him regarding inspections, but if you haven't already, I would have a serious discussion with him, making him an offer regarding future inspections that he cannot refuse.
Or, if you are not sure if enough studs were placed, and you have the contractural authority, make him pay for an X-Ray, or some other means of testing to prove to you what is there. However, this will not tell you if the quality of the weld to the flange is good.
In the end it is your call in how to best provide the owner with a safe product.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: shear stud location on a composite beam
We have had a serious discussion with the contractor to call us prior to every pour. We are the EOR for this project and we are also doing the special inspections.
I am pretty sure he welded the studs to the side because in the consequent inspection of the same area he had made the same mistake and we had him take those studs out and re weld it on the center.
The beams were W24x55 and the studs were 2" off center.
The reason he welded the studs off center was the high flute of the deck was directly above the center of the beam so instead of cutting the deck welding the studs on center he welded it off center.
Our drawings clearly indicate that the studs should be welded on the center.
RE: shear stud location on a composite beam
BA
RE: shear stud location on a composite beam
RE: shear stud location on a composite beam