The semi-liquid substance accumulated at the bottom of the septic tank.

It refers to the lighter organic material that rises to the surface of the water.

An underground tunnel that carries off the drainage and waste matter from a home or town is called:

The pipe that conveys waste from various fixture other than from the water closet.

It is a fitting or device that provides liquid seal to prevent the back passage of air.

The tools used to tighten or loosen hexagonal fittings like unions and other metal fittings.

The kind of fitting used to connect fixed pipe and fixtures is a _______

A fitting or device installed at the inlet of a water pump to prevent backflow of water.

What material is used to seal off threaded fittings to avoid leakage?

What must be installed to prevent siphonage or backflow of the water seal in the drainage system?

Which of the following in not required by the National Plumbing Code?

What is the ideal inclination of a horizontal waste pipe as recommended by the NPC?

Plastic pipes are commonly used in water fixture installation nowadays. Which of the following is preferred?

Refers to public health conditions related to clean drinking water and adequate treatment and disposal of human excreta and sewage.

_________ that is being discharged by water closet.

_________ that are coming from various fixtures.

__________ is the flow of water, or other liquid mixture or substances into the distributing pipes of a potable supply of water from any source, other than is intended source.

A vent that does not carry water or water borne wastes

It is made from asbestos, fibers and Portland

Cement. The thickness of the pipe is twice as

That of that standard cast iron pipe.

Is also one of the oldest plumbing materials used by the Egyptians, the Greeks and the Roman builders as soil and waste pipe.

Is made out from mild steel, drawn through a die and welded, cast into 6.00 meters long.

One of the oldest materials used for sewer lines. It is made out from clay, cast into length of 75cm treated with glazing compound.

One of the most expensive types of pipe. This pipe is made of an alloy or zinc and copper mixed at 15% and 85% respectively.

This pipe is better in quality than steel pipe for plumbing installation. Test showed that wrought iron pipe is more resistant to acid waste than the steel pipe.

1.The ________ is the heaviest. It is suitable for underground installation.

1.The_________ is lighter than k type available in both the rigid and flexible form. It is commonly used in residential water supply line and for radiant heating installation

1.The __________ is the thinnest and available only in a rigid form. This type of copper pipe is specially designed for small water supply lines and for radiant heating installation.

The most popular and generally specified

Material for drainage system in buildings is the

_______________.

Which is not a classification of plumbing in your home?