What should gas piping inside a building NOT be installed in or through?

Gas piping inside a building should not be installed in or through any of the listed options because it poses significant safety hazards.

Chimneys are designed for venting combustion gases and could allow gas to escape into areas where it may not be safely contained or ventilated. If gas were to leak in a chimney, it would create a dangerous environment that might lead to explosions or fires.

Air ducts are crucial for heating, ventilation, and air conditioning systems. If gas piping were to run through these ducts, any leak could spread the gas throughout the building, significantly increasing the risk of explosion or suffocation in poorly ventilated areas.

Clothes chutes generally serve as a conduit for laundry but are not designed to handle gas piping. Installing gas lines in clothes chutes would not only be unsafe but also complicate the process of managing and accessing both plumbing and laundry logistics within the building.

Thus, the choice to avoid installing gas piping in or through chimneys, air ducts, and clothes chutes is rooted in the need to maintain safety and prevent hazards associated with gas leaks. It's important to adhere to established codes and best practices concerning gas piping installation to ensure the safety of all occupants in a building.