Question

Anti-siphonage pipe is connected to __________

(a) top of P trap W.C

(b) main soil pipe

(c) bottom of P trap W.C

(d) side of water closet

This question was addressed to me in unit test.

Query is from Analysis of Rates for Sanitary and Water Supply in division Analysis of Rates of Civil Engineering Drawing

Answer 1

Right option is (c) bottom of P trap W.C

Best explanation: A vent is open at top and bottom, to facilitate exit of foul gases. It is carried at least one meter higher than the roof level. Rain water pipe: it is a pipe which carries only the rain water. Anti-siphonage pipe: it is pipe which is installed in the house drainage to preserve the water seal of traps.