A cleanout plug or removable trap section should be installed on traps located below which of the following?

The installation of a cleanout plug or removable trap section is essential for facilitating access to the trap for maintenance and cleaning purposes. In the case of traps located below laundry tubs, sinks, and washbasins, these areas are commonly subject to clogs and blockages due to debris, hair, soap residues, and other materials that can accumulate over time.

Having a cleanout plug or removable trap section allows plumbers or homeowners to easily access the trap without needing to dismantle extensive plumbing fixtures, thereby making maintenance more straightforward. This is particularly important in areas like laundry tubs and sinks because they often deal with larger volumes of water and a variety of materials that can lead to significant clogging issues.

While the other fixtures, such as showerheads, faucets, and bathtubs, may also have traps, the need for easy access through cleanouts is most critical in the areas where daily use and potential for blockage occur more frequently, as is the case with laundry tubs, sinks, and washbasins. This proactive approach in plumbing design helps prevent more serious drainage issues and facilitates efficient maintenance.