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Soak pit shall not be less than ____________(a) 45 cm(b) 90 cm(c) 50 cm(d) 100 cmI got this question in final exam.I would like to ask this question from Design of Septic Tanks in chapter Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing

Answer»

Right option is (b) 90 cm

Easy explanation: SOAK pit shall not be less than 90 cm in diameter and not less than 1.5 m in depth below invert level of the inlet pipe. The pit is constructed with lining of dry brick or stone with OPEN JOINTS backed with at LEAST 7.5 cm THICK coarse aggregate.



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