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In a house drainage system, the pipe which is used to preserve the water seal of traps is called __________(a) Waste pipe(b) Rainwater pipe(c) Vent pipe(d) Anti-siphonage pipeI had been asked this question during an interview for a job.This intriguing question originated from Plumbing for Buildings topic in portion Plumbing for Buildings of Construction & Building Materials

Answer» RIGHT answer is (d) Anti-siphonage pipe

The best I can explain: In a house drainage system, the pipe which is USED to preserve the water SEAL of traps is called anti-siphonage pipe. The vent pipe is PROVIDED to serve the purpose of ventilation of the system. The waste pipe carries only liquid waste. Rainwater pipe carries only rainwater.


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