It's really according to what type of pour you're talking about. If is a turn down slab and has plumbing and electrical coming up through the concrete then the plumbing/electrical has to be inspected before the pour. The reason behind that is everything is under the concrete and they want to see how it ran, water or air must be applied to the water lines to show that they don't leak. After the inspection it is OK to cover the pipes, elec conduit with dirt. Turn down slabs has the walls sitting on the slab so yes it HAS to be poured first. In my case I'm using a curtain wall of block so inspection is not necessary at this moment. I have to show a termite letter, have all wiring roughed in with service panel, water has to be connected with psi/ or water on it, slab poured, brick completed, and all windows, doors, garage door has to be up, and shingled. "In the dry" another words.
Tell you truth I really want the pour to the last thing. I want to keep the concrete clean as possible so the floor exposy man won't have in troubles with mud, dirt, dust, oil on the floor.
