Question

In a house drainage system, the pipe through which human excreta flows is called __________

(a) Vent pipe

(b) Soil pipe

(c) Rainwater pipe

(d) Waste pipe

This question was posed to me by my college professor while I was bunking the class.

My question comes from Plumbing for Buildings topic in section Plumbing for Buildings of Construction & Building Materials

Answer 1

Right answer is (b) Soil pipe

To elaborate: In a house drainage system, the pipe through which human excreta flows is called the soil pipe. The size of the soil pipe commonly used in house drainage is 100 mm.