One of the worst I saw was a neighbor finishing the floor off and there beside him was the roll of wire that was supposed to be put down before the concrete. Another was in my daughters subdivision in Little Rock. Plumber stayed with rough in until midnight and the concrete was poured starting at 6:00 the next morning. Yes someone had stolen the copper out of the slab in the middle of the night.
First placement could not wait for BIM to catch up so some core drilling the future. Remainder of the decks now have hilti sleeves in place for rough-ins. Amazing how quick you can toast a budget if you get these things wrong.