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What is the detention period in a septic tank?(a) 24 hours(b) 12 hours(c) 06 hours(d) 36 hoursI got this question by my college director while I was bunking the class.Question is taken from Schedule of Rates for Water Supply works topic in section Schedule of Rates Metric and F.B of Civil Engineering Drawing

Answer»

The correct choice is (a) 24 hours

The explanation is: DETENTION period of 24hrs (mostly) considered in SEPTIC tank DESIGN. The rate of flow of EFFLUENT MUST be equal to the rate of flow of influent.



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