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Plug welds to fill in holes in baseplate (brace frame)?

Plug welds to fill in holes in baseplate (brace frame)?

Plug welds to fill in holes in baseplate (brace frame)?

We are having disagreements in our office regarding the issue of filling in abandoned baseplate holes of a braced frame.
The issue is that the cast-in-place anchors were miscast (of course) by an inch or so. A solution presented was to simply fill in the holes, then make new holes in the baseplate to accomdate the cast-in anchors.... the concept was that the weld material would effectively "close up" the baseplate and baseplate bending and shear will pass through the weld material.

I don't really see issues with that logic. What are some concerns you would have?

RE: Plug welds to fill in holes in baseplate (brace frame)?

I don't see the need to fill in abandoned holes. If the baseplate still works after more holes are added then the original holes should not be a problem, right? On a separate issue, if the anchors were only off by an inch or so, your new holes will probably "overlap" the original holes and create an odd looking hole that could be a source of stress risers in the baseplate. You may want to look at creating slotted holes and welding a washer on to engage the anchor rods in shear if that is the design intent.

RE: Plug welds to fill in holes in baseplate (brace frame)?

If the abandoned holes do not interfere with the new holes, leave them be...if they conflict or are within an inch, install a square washer over the new hole and the old one with a 1/2" lap and weld all around the lap joint.

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