Which is the smallest buried underground gas piping size according to the standard?

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Multiple Choice

Which is the smallest buried underground gas piping size according to the standard?

The standard requires a minimum size for buried gas piping to ensure enough gas flow and acceptable pressure along the service run. The smallest size allowed for underground piping is three-quarters of an inch nominal. A smaller size, such as half an inch, would typically not provide adequate flow or pressure for residential loads when buried, especially over longer runs. Larger sizes (like 1 inch or 1 1/4 inch) are permitted where the gas demand or distance requires them, but they are not the minimum.

The standard requires a minimum size for buried gas piping to ensure enough gas flow and acceptable pressure along the service run. The smallest size allowed for underground piping is three-quarters of an inch nominal. A smaller size, such as half an inch, would typically not provide adequate flow or pressure for residential loads when buried, especially over longer runs. Larger sizes (like 1 inch or 1 1/4 inch) are permitted where the gas demand or distance requires them, but they are not the minimum.

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