What should be done if copper piping is being used in a buried situation?

When copper piping is used in a buried situation, Type K tubing is the appropriate choice due to its thickness and durability. Type K copper tubing is characterized by its heavy wall, which offers superior resistance to corrosion and external pressures that could be encountered underground. This makes it particularly suitable for applications involving direct burial, as it can withstand soil pressure and potential impact without compromising its integrity.

In contrast, Type M tubing is thinner and typically used for interior plumbing applications where the risk of damage is lower. Type DWV tubing is specifically designed for drain, waste, and vent systems and is not intended for pressurized potable water applications. Therefore, using Type K ensures safety and longevity of the piping system when buried, accommodating both structural demands and environmental conditions effectively.