Welding to embedments in concrete.
Welding to embedments in concrete.
(OP)
We are designing a steel walkway to attach to the side of a concrete tank wall. To attach the walkway, we are embedding plates in the concrete wall. Supports for the walkway will be welded to the embedded plates. The embedded plates are 1/2" thick. We are welding the flanges (thickness = 0.26") of a W6x15 to the plates.
The contractor raised concerns about welding the supports to the embedded plates. He is concerned the welding will create too much heat and pop out or weaken the concrete. Does anyone know of any sources that address welding embedments on concrete? Does anyone have "rules-of-thumb" or sources of information on limits for heating concrete or welding steel attached to concrete?
The contractor raised concerns about welding the supports to the embedded plates. He is concerned the welding will create too much heat and pop out or weaken the concrete. Does anyone know of any sources that address welding embedments on concrete? Does anyone have "rules-of-thumb" or sources of information on limits for heating concrete or welding steel attached to concrete?






RE: Welding to embedments in concrete.
RE: Welding to embedments in concrete.
RE: Welding to embedments in concrete.
As far as what civilperson says, a good welder will do this anyway.
RE: Welding to embedments in concrete.
RE: Welding to embedments in concrete.
Other suggestions - use the smallest size fillet as possible and only use as much welding as req'd for a safe design. If a 0.25" fillet works, don't bump it up to 3/8" and then the guy in the field bumps it up to one size larger becasue it feels good. This is not economical either.
Finally, the welders should be using welding procedures to minimize the build up of heat in the joints.
PS - Since you are welding the flanges to the plates - are you considering this a moment connection? Make sure you have anchors that can yield at the same level as the flanges, so the forces are put directly into the anchors if possible.
RE: Welding to embedments in concrete.
I would be interested in seeing a document or reference for this as well as the OP.
RE: Welding to embedments in concrete.
RE: Welding to embedments in concrete.
I don't have access to a PCI Design Handbook, does anyone have any other good referances or articles that discuss welding on plates embedded in concrete.
From the posts above (other that blake989's) i'm not sure where I can find any more information on this topic.
Any help would be appreciated.