I have 3 cylinder columns supporting my porch/roof in front of my house, not sure if they all extend down to my foundation. I am looking to box in them in. 2 of the columns sit in my concrete driveway. Problem is the concrete moves up and down with the changing weather. I'm having a new driveway poured, and was told if the concrete immediately around the column is poured down to my foundation (as a seperate piece), that piece of concrete would not move. Is that necessary, or is there another approach? Thanks.