Which sewer appurtenance discharges the excess sewage flow to relief sewer?
(a) Flushing tank
(b) Drop manhole
(c) Lamp hole
(d) Storm regulators
I got this question in quiz.
This intriguing question comes from Inverted Siphon, Storm Regulator and Sewage Pumping in chapter Construction of Sewers, Sewer Appurtenances and Sewage Pumping of Environmental Engineering