What type of piping may be included in plumbing work within a building?

Gas piping is a critical component of plumbing work within a building, as it is used to transport natural gas or propane from the supply source to various appliances and fixtures, such as stoves, water heaters, and furnaces. Proper installation and adherence to safety codes are essential in gas piping to prevent leaks and ensure safe operation. This type of piping is subject to specific regulations and standards due to the potential hazards involved.

While the other options are relevant to construction and building systems, they do not fall under plumbing. Electrical piping is related to electrical wiring and conduit used for power distribution. HVAC piping pertains to the heating, ventilation, and air conditioning systems, focusing on air movement and temperature regulation rather than plumbing. Structural piping is associated with the building’s framework and is not related to the carrying of fluids such as water or gas. Thus, gas piping is the proper choice when discussing plumbing systems specifically.