Plug welds used for cast in baseplates
Plug welds used for cast in baseplates
(OP)
In noticed in the latest modern steel construction that it said plug welds cannot be used to resist tension. I have regularly called up cast-in baseplates with reinforcement plug welded which are subject to moderate sized uplift forces.
If I need to weld reinforcement to a baseplate which is to be cast into concrete and subject to uplift forces, what is the best way to fix the reinforcement to the plate. I have a 1" thick plate which needs to be fixed to #8 bars. The reinforcement fixed to plate needs to transfer approximately 16kips per reinforcing bar.
All help will be appreciated.
If I need to weld reinforcement to a baseplate which is to be cast into concrete and subject to uplift forces, what is the best way to fix the reinforcement to the plate. I have a 1" thick plate which needs to be fixed to #8 bars. The reinforcement fixed to plate needs to transfer approximately 16kips per reinforcing bar.
All help will be appreciated.






RE: Plug welds used for cast in baseplates
you may wish to request the castin plate manual from RJB, they have tested the system. I spec drilled thru puddled weld one side and CFW the other, maybe I should review this.
An expert is a man who has made all the mistakes which can be made in a very narrow field
RE: Plug welds used for cast in baseplates
Can't you weld, either fillet or penetration weld, splice lengths of rebar to the bottom of the plate and overlap them with the foundation rebar. I don't like casting baseplates in the concrete, too many voids under them.
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Plug welds used for cast in baseplates
RE: Plug welds used for cast in baseplates
http:
RE: Plug welds used for cast in baseplates
Plug welds are usually only permitted to resist shear. If you are holding the bar slightly below the top of plate and puddling a weld on top of the bar, it is a plug weld. If you are extending the bar thru the plate and welding as with a fillet above and/or below, or tapering the hole or tip of the bar as for a CP/CJP weld, then you would probably consider those welds differently.
I think it is the puddled weld metal in a plug that causes a problem. In addition to shrinkage issues, there is no way to see the weld-base metal interface to evaluate fusion, and no way to inspect important features of the weld. Also consider that a true plug weld involves two relatively thin pieces of metal that are only bonded by a thin line of weldment along a circumference.
RE: Plug welds used for cast in baseplates
My understanding, and I can see that TXStructural has the same understanding, is of two plates with a hole in only one of them, and the hole filled with weld metal to connect the two together.
The full or partial penetration weld used to splice a bar end to a plate is not a called a plug weld.
Look here: htt
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Plug welds used for cast in baseplates
An expert is a man who has made all the mistakes which can be made in a very narrow field
RE: Plug welds used for cast in baseplates
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Plug welds used for cast in baseplates
RE: Plug welds used for cast in baseplates