Yes but GP said large pipes, e.g. for a toilet or the main pipe that connects to the municipal sewer. In a single-story house these would be under the floor. Pi

Yes but GP said large pipes, e.g. for a toilet or the main pipe that connects to the municipal sewer. In a single-story house these would be under the floor. Pipes in the walls of a single-story house would be sink drains or vent pipes, and are narrower.