Sanitation Systems phase 1 1.1 part 3

What should happen to the waste pipe with two or more appliances connected to it?

• It should increase in size

• It should remain the same size

• It should decrease in size

• It should be disconnected

How should ground floor appliances be connected to discharge stacks when the building is over 5 storeys high?

• They should be connected to a vent pipe

• They should have their own independent stacks

• They should be connected directly to the drain

• They should be connected to a gully

What is the correct name for a waste pipe with a direct connection to drain?

• Discharge stack

• Vent pipe

• Gully connection

• Stub waste connection

What does a self-sealing trap contain?

• Compression fitting

• Collapsible membrane

• Air admittance valve

• Water seal

If a vent pipe is to be sited within 3m of an opening window, how far above the window should a vent extend?

• 900mm

• 1200mm

• 100mm

• 500mm

What is the minimum trap seal depth for a washbasin?

• 32mm

• 50mm

• 75mm

• 100mm

Which type of valve allows air into a stub stack to prevent trap seal loss?

• Waterless valve

• Compression valve

• Air admittance valve

• Self-sealing valve

Where should an air admittance valve be fitted?

• At the head of the drain run

• At the midpoint of the drain run

• Vertically

• Horizontally

What should be done if an air admittance valve is fitted in a boxing?

• Fit it horizontally

• Remove the access panel

• Add ventilation to the boxing

• No action required

In a multi-storey building, how many additional conventional ventilation stacks are required if more than four properties have air admittance valves connected to a common drain?

• 2

• 4

• 3

• 1