I have a home built in 1927. I am trying to finish the basement. The problem I am having is that the footing for the 3 lolly columns has a 3'x3' square around it and has a 4" rise, making the floor uneven and people trip over it. Is it ok to chip away at the concrete to reduce the footing size and then I can box out the column and have a evenly carpeted floor. Or should i put in a sub floor to level it out.
I wouldn't advise modifying the footing that bears the lally column if you can avoid it. But, a couple inches won't hurt in most cases, assuming the pad is sufficiently deep. You might consider ordering a batch of lightweight flowable self-leveling concrete to raise the floor height. It would be cheaper than adding lumber and subfloor.