Which standard provides general copper tube requirements for plumbing?

Which standard provides general copper tube requirements for plumbing?

• A. NFPA 20
• B. ASTM B 251
• C. ASTM B 88
• D. NFPA 13

Answer: (B)

The concept tested is recognizing the standard that sets general requirements for copper tubes used in plumbing. ASTM B251 covers copper and copper-alloy drawn tubes and provides the broad specifications that apply to a wide range of plumbing tubes, including composition, tolerances, mechanical properties, and marking. This makes it the appropriate source for general copper tube requirements. NFPA 13 and NFPA 20 relate to sprinkler systems, not material specifications. ASTM B88 covers seamless copper water tubes, which is narrower in scope than the general requirements addressed by B251.

The concept tested is recognizing the standard that sets general requirements for copper tubes used in plumbing. ASTM B251 covers copper and copper-alloy drawn tubes and provides the broad specifications that apply to a wide range of plumbing tubes, including composition, tolerances, mechanical properties, and marking. This makes it the appropriate source for general copper tube requirements.

NFPA 13 and NFPA 20 relate to sprinkler systems, not material specifications. ASTM B88 covers seamless copper water tubes, which is narrower in scope than the general requirements addressed by B251.