New Member - Hi All
I am running a job where we have to demo an egress stair and the intermediate landings but keep the main landings. The building is turn of the century and the concrete is hard as stone. The stair in cast in place attached to ring beams at the intermediate and main landings and the stair itself is part of the overall structural support. I am having trouble coming up with a procedure for safe removal. A brock is not a viable option and a compressor with hammers is not an attractive options either. one of my main concerns along with saftey & productivity is making sure the intermediate slabs dont give way and pancake when the stair leading to the next landing is cut free. to that end when exactly to cut the rebar free so as to not destroy the structural integrity of the next next landing. The main landings are pretty secure as they are independently supported. is cutting them up with a road saw or similar piece of equipment a reasonable solution or am i inviting another set of unwanted variables? also, we can only load out on the 1st floor out to the street. any advice or expertise would be appreciated. this is being done in nyc btw.
thanks