The diameter of a domestic sewer pipe laid at gradient 1 in 100 is recommended ________
(a) 100 mm
(b) 150 mm
(c) 210 mm
(d) 400 mm
I have been asked this question by my school teacher while I was bunking the class.
Question is from Sanitary Works in section Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing