How many hangers are required for a 1-1/4 inch gas line spanning 120 feet?

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Multiple Choice

How many hangers are required for a 1-1/4 inch gas line spanning 120 feet?

Explanation:
Gas piping must be supported at intervals not exceeding 10 feet. For a 120-foot horizontal run, place hangers every 10 feet starting at the first end and ending at the far end. The hangers would be at 0, 10, 20, ..., 120 feet—13 supports in total. So 13 hangers are required.

Gas piping must be supported at intervals not exceeding 10 feet. For a 120-foot horizontal run, place hangers every 10 feet starting at the first end and ending at the far end. The hangers would be at 0, 10, 20, ..., 120 feet—13 supports in total. So 13 hangers are required.

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