New construction builder said to leave 8 inch by 13-14 jackhammered hole, made to reposition bathtub drain pipe in basement slab floor. Tub was set over to cover up hole. Bath walls and floor tiled. Builder said it is standard practice to leave large rectangular hole under bathtub.
This seems wrong. How large of a hole in a basement concrete slab floor, is too big? Is there a code violation in Colorado?