In a house drainage system, the pipe which is used to preserve the water seal of traps is called ______

Septic action is produced by the septic tank by ______

The opening at the top of the intercepting trap is called as _______

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

The pedestal type European water closet is also known as ____

Inferential meters can be used for both low and high flows.

In the two-pipe system for the drainage of buildings, the discharge from the water closet is connected to the waste pipe…

The size of the rainwater pipe commonly used in house drainage is _____