zlacker

Yes, why wouldn’t you be able to repair replace parts of a building? You cut out the bad parts while reinforcing structural elements temporarily while the replacement work is performed, then you remove the temp supports.

New footings, beams, walls, etc are constructed or installed to replace old ones all the time.

Say you have a bad concrete footing for a post. You use jacks to support the beam on both sides of the post that sits on the footing, remove the post, remove the footing, pour a new footing, and then put a new post in and remove the beam jacks.

>>quickt+(OP)
I saw this done in downtown SF to the old macy's men's building. they cut off the facade, cut the concrete back a bit but left the old rebar protruding some and grafted new concrete/rebar on to it.