Level 3 appliance's and commissioning

minimum trap seal left after a discharge test

• 25mm

• 30mm

• 35mm

• 50mm

which of the following must have a 75mm trap seal

• Bath

• Shower

• Basin

• WC

minimum distance for a high-level WC cistern

• 0.5m

• 1m

• 2m

• 1.5m

which of the following may have its own 50mm waste pipe

• Bath

• Basin

• Bidet

• Shower

when carrying an air test, the u-gauge should read?

• 35mm

• 36mm

• 37mm

• 38mm

when carrying an air test a u-gauge, the test period should be?

• 1 minute

• 2 minutes

• 3 minutes

• 5 minutes

a junior urinal height from a floor?

• 400mm

• 500mm

• 600mm

• 800mm

A single bowl flush volume per hour.

• 6ltr

• 7.5ltr

• 10ltr

• 12ltr

Air gap for a WC?

• AUK1

• AUK2

• AUK3

• AG

Air gap for a kitchen sink?

• AUK1

• AUK2

• AUK3

• AG