Plumbing Systems Quiz

Which one of the following is the minimum recommended trap diameter for a kitchen sink waste?

• 32mm

• 40mm

• 50mm

• 75mm

Refer to Figure 1. The gutter cross-section shown is:

• half round

• Ogee

• Victorian

• Square

What is the recommended fall for a domestic guttering system?

• 1:400

• 1:600

• 1:500

• 1:700

Why is there a gap designed into a snap clip PVCu gutter fitting?

• To allow for thermal expansion

• To allow for mistakes

• Ease of installation

• As a traditional guide which is no longer relevant

What is the component shown in Figure 2 used for on a rainwater discharge system?

• To discharge rainwater into a gulley

• To secure a high-level offset RWP

• To make angle connections

• To enable ease of removal in case of blockage

What is the name of the component that connects several downpipes together?

• Stop end

• Hopper head

• Running outlet

• Rain water shoe

Which one of the following documents will give guidance on the installation of sanitary appliances?

• BS 6700

• BS 12056

• Approved document D (H in Northern Ireland)

• The Water Regulations 1999

When fixing and securing a WC cistern to the wall of a bathroom, which of the following fixings would you use?

• Silicone sealant

• Single-thread brass screws

• Large headed copper nails

• Steel screws

Before starting work replacing a bathroom suite in an occupied dwelling, a plumber should first:

• Protect the surrounding work area

• Check the water pressure

• Report the work to the local water company

• Arrange an inspection for completed work

What type of WC pan is shown in Figure 3?

• Double-trap wash-down pan

• Single-trap siphonic pan

• Single-trap wash-down pan

• Double-trap siphonic pan