What does the term "service piping" refer to?

The term "service piping" typically refers to the pipes that deliver water from the main supply to the building or facility. This includes both the pipes that bring water into the building (usually from a municipal water source) and those that distribute it throughout the building to various fixtures and appliances.

In many contexts, service piping encompasses any piping system that is essential for delivering utility services, which can include not only potable water but also waste drainage and venting systems. The comprehensive nature of the term aligns with the answer indicating that both A and B are included, as service piping covers multiple functions within the plumbing system.

Understanding service piping is crucial for plumbing contractors, as it impacts pressure, flow rates, and the overall efficiency of the plumbing system within any structure. Proper installation and maintenance of this piping are essential for ensuring compliance with local codes and providing reliable service.