9189SANPH1

How many types of sanitation system are there in the UK according to the document?

• Two

• Three

• Four

• Five

Which of the following is NOT a type of soil stack system in the UK?

• Primary ventilated stack system

• Ventilated branch discharge system

• Tertiary ventilated stack system

• Stub stack

What is the primary ventilated stack in domestic dwellings?

• A system that requires an extra ventilating stack

• The least common system installed

• A system where appliances are spread out away from the stack

• The most common system installed where appliances are closely grouped around the stack

Why does the primary ventilated stack not require a separate ventilating stack?

• Because it uses smaller discharge stacks

• Because the discharge stack is too small to handle pressure fluctuations

• Because the discharge stack is large enough to limit pressure fluctuations without the need for a separate stack

• Because it uses multiple small stacks for each appliance

What does BS EN 12056 Part 2 deal with?

• The layout and calculation of electrical systems

• The maintenance and repair of sanitary pipework

• The layout and calculation of sanitary pipework

• The installation of ventilation systems

According to the guidelines laid down in BS EN 12056, how should all sanitary appliances be positioned in relation to the discharge stack?

• At a considerable distance from the discharge stack

• Closely grouped to the discharge stack

• On the opposite side of the room from the discharge stack

• In a scattered arrangement around the discharge stack

What should be the gradient of bends and branches in the pipe system, ideally?

• 5° (1:40)

• 10° (1:20)

• 2.5° (1:40)

• 15° (1:10)

How many 45° bends with a long radius should be incorporated at the base of the vertical discharge stack?

• 1

• 2

• 3

• 4

Why should knuckle bends be avoided in the pipe system?

• They increase the flow speed

• They can cause compression which may result in trap seal loss

• They are more expensive

• They take up more space

What is the minimum invert of the drain required for systems up to five storeys high?

• 450mm

• 750mm

• 500mm

• 1000mm