Civil Engineering Mcqs

Which one of the following statements regarding septic tanks is wrong ?

(A)  A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided

(B)  The outlet invert level is kept 5 to 7.5 cm below the inlet invert level

(C)  The minimum width of septic level is 90 cm

(D)  The depth of tank is kept equal to its width



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