Requirements - Traps

What is the purpose of a trap under an appliance?

• To stop the noxious (unpleasant) smell from the soil stack entering the property.

• To increase the water pressure in the appliance.

• To prevent water from flowing into the appliance.

• To filter out solid waste before it enters the drain.

Traps attach to the underside of the ______ on the appliance.

• waste fitting

• control panel

• door handle

• power cord

What material are the majority of traps made from?

• Brass

• Polypropylene

• Copper

• Chrome plated

The jointing methods for traps are mainly push-fit, and more commonly compression using a ______.

• rubber seal

• metal clamp

• plastic washer

• threaded nut

Where a trap diameter is 50mm or above, the trap seal must be a minimum of ___ deep like a WC.

• 50mm

• 25mm

• 75mm

• 100mm

Why do larger diameter traps become more difficult to lose the trap seal?

• They contain less water

• They contain more water

• They are made of different material

• They are smaller in size

Fill in the blank: The trap seal depth is the retained depth of water stopping the ________ smell entering the property.

• noxious

• pleasant

• fresh

• sweet

What is the seal depth for soil stack for a washbasin?

• 50mm

• 75mm

• 100mm

• 40mm

What is the waste fitting size for a bidet?

• 1¼”

• 1½”

• NA

• 2”

What is the trap diameter for a bath?

• 32mm

• 40mm

• 75mm

• 100mm