We had one tech running EMT in a stairwell and insted of drilling thru the wall he put a saddle thru the open FIRE stairwell door. When the GC saw what he did and asked just what the heck went thru his mind, he said that he never saw the door closed and figured that it was always propped open. When the GC told him to fix it he took out the sawzall and cut the top of the door off. Tada, door closes. Needless to say he wasn't walking right after the reaming he got for that and our company got to buy a new fire door.
