What is described as gas piping that would require removal of permanent construction to gain access?

The term "concealed piping" refers to gas piping that is hidden behind walls, ceilings, or floors, making it inaccessible without removing sections of permanent construction, such as drywall or flooring. This type of piping is often installed for aesthetic reasons, to maintain a clean look in a space. Because it's not visible, any work that needs to be performed on this piping—such as inspection, maintenance, or repair—requires significant effort and disruption, involving the potential removal of structural or decorative elements. This characteristic distinguishes concealed piping from exposed, underground, or outdoor piping, which are either visible and accessible or buried/located outside, allowing for easier access without major construction work.