I've got a lally column at the bottom of a stair case in a basement finsihing project. Everything down there is going to be red oak. So I'm planning on boxing the column but I need it to be pretty solid as the handrail will be fixed to the column. I was thinking about putting blocking on the column which I'd then nail the red oak box to, either by using 1/4" tapcons thorough the steel and into the concrete, a powder actuated tool (although I'd have to rent this), or maybe another option. Anybody have any suggestions, or concerns about this?