Question

Where gas piping is installed underground beneath buildings, the piping shall be one of the following?

1) Metallic piping
2) Plastic piping
3) Copper piping
4) All of the above

Answer 1

While metallic, plastic, and copper piping can all be used for underground gas piping installations, the choice must comply with local building codes and regulations for safety.

Step-by-step explanation:

When gas piping is installed underground beneath buildings, it is essential that the right materials are chosen for safety and durability. The options for types of piping that can be used underground are:

• Metallic piping, which is durable and has a long lifespan.
• Plastic piping, often used for its corrosion resistance and flexibility.
• Copper piping, which is less common for gas lines but has high corrosion resistance.

In this scenario, all of the above options are technically possible materials for underground gas piping. However, it is crucial for the installer to adhere to local building codes and regulations, which may specify the type of material that must be used in a given location for safety reasons.