The single stack system if effective only in the case when the traps are filled with water seal of depth not less than _________(a) 15 mm(b) 50 mm(c) 75 mm(d) 100 mmThe question was posed to me by my college director while I was bunking the class.This intriguing question originated from Systems of Plumbing topic in portion Plumbing for Buildings of Construction & Building Materials

The single stack system if effective only in the case when the traps a

1.	The single stack system if effective only in the case when the traps are filled with water seal of depth not less than _________(a) 15 mm(b) 50 mm(c) 75 mm(d) 100 mmThe question was posed to me by my college director while I was bunking the class.This intriguing question originated from Systems of Plumbing topic in portion Plumbing for Buildings of Construction & Building Materials
Answer» The correct answer is (c) 75 mm Explanation: For the drainage of buildings, there are four PRINCIPAL SYSTEMS of plumbing. These are a single stack system, one-pipe system, two-pipe system and PARTIALLY ventilated single stack system. The single stack system if effective only in the CASE when the traps are FILLED with water seal of depth not less than 75 mm.

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