Which of the following is prohibited for gas piping installation within a building?

In the context of gas piping installation within a building, using a clothes chute is prohibited due to safety considerations. Clothes chutes are vertical shafts that can create pathways for odors, flammable gases, or fire to spread throughout a structure. If a leak were to occur in the gas piping, the enclosed space of a clothes chute could facilitate the accumulation of gas, increasing the risk of explosion or fire.

In contrast, gas piping installations are generally permitted in areas like bathrooms, basements, and garages, provided they meet safety codes and regulations. These spaces can be appropriately ventilated or isolated to minimize risks associated with gas leaks. Thus, the prohibition of gas piping in a clothes chute is a crucial safety measure to prevent dangerous situations that might arise from the confined nature of such structures.