Mock Test 1

Question 1

Explain the combined system

Answer 1

We’re surface water and foul water are carried away from a house using a single sewer pipe

Question 2

Which is the proffered method of testing above ground drainage

Answer 2

Air test

Question 3

List 3 good design properties of a sanitary appliance

Answer 3

Durable
None corrosive
Smooth surface
Must not absorb water

Question 4

List 3 materials sanitary appliances are made from

Answer 4

Pressed steel
Firefly
Acrylic

Question 5

What is capillary attraction

Answer 5

It is the force that allows a porous material to soak up a liquid

Question 6

What is a sparge pipe

Answer 6

It is the length of pipe over a urinal that flushes water into the urinal

Question 7

Explain laminar flow

Answer 7

Occurs when a fluid flows in parallel layers with no disruption between the layers

Question 8

Give 2 reasons for ventilating drains

Answer 8

To maintain an equilibrium of pressure

To prevent the build up of foul air and the possibility of dangerous gases

Question 9

Explain the term permanent hard water

Answer 9

If the water passes through types of salt like such as sandstone the salts are readily dissolved and held in the water without the need for carbon dioxide