8202L3SANPPT1

Which of the following is NOT a type of sanitation system listed in the UK?

• Primary ventilated stack system

• Secondary ventilated stack system

• Tertiary ventilated stack system

• Stub stack

What is the minimum gradient that must be kept for the branches in a primary ventilated stack system according to BS EN 12056?

• 2.5° per metre

• 5° per metre

• 10° per metre

• 15° per metre

In a primary ventilated stack system, how should all sanitary appliances be arranged in relation to the discharge stack?

• Separately from the discharge stack

• Directly above the discharge stack

• Closely grouped to the discharge stack

• At a minimum distance of 50 cm from the discharge stack

According to the design of a primary ventilated stack system, are separate ventilation pipes required?

• Yes, they are always required

• No, but only if guidelines in BS EN 12056 are followed

• Yes, but only for appliances far from the stack

• No, they are never required

According to BS EN 12056, how should all sanitary appliances be arranged in relation to the discharge stack?

• They should be randomly connected.

• They must be closely grouped to the discharge stack.

• They should be connected with flexible hoses.

• They must be placed at least 5 meters away from the discharge stack.

What is the recommended gradient for discharge pipe branches to ensure proper flow?

• 10° per metre

• 2° per metre

• 5° per metre

• 15° per metre

What type of bends should be avoided in the vertical discharge stack to prevent compression?

• 90° bends

• Knuckle bends

• 45° bends

• Long radius bends

What should be used at the base of a vertical discharge stack for a proper installation?

• A straight connector

• A P trap

• 2 x 45° bends or a long radius bend

• A flexible coupling

What is the maximum distance from appliances to the soil stack for a 32mm waste pipe according to the primary ventilated stack system diagram?

• 1.7m

• 3.0m

• 4.0m

• 6.0m

What is the minimum diameter required for a long radius bend on a pipe according to the primary ventilated stack system diagram?

• 32 mm

• 40 mm

• 200 mm

• 75–100 mm