309 Sanitation System 2 Quiz

The diagram below shows which type of drainage system?

• A combined system

• A partially combined system

• A separate system

• A partially separate system

What is the maximum distance allowed from the highest waste connection to the invert of the drain on a stub stack system before ventilation is required?

• 1.6m

• 1.8m

• 2m

• 2.5m

A waste pipe discharging into a ground level gully should do which of the following?

• Discharge over the grate

• Discharge through the grate but above the water level of the trap seal

• Discharge adjacent to the grate

• Discharge through the grate and below the water level of the trap seal

If a 4m length of soil pipe had a fall of 18mm per meter, what would the vertical drop be at the end of the pipe run?

• 180mm

• 110mm

• 418mm

• 72mm

The image below shows a fixing which would be used in the installation of which of the following appliances?

• A wall hung WC

• A washbasin fixed to a wall without a pedestal

• A combined towel hook and cup holder

• A shower unit with hose loop

The Water Regulations state that which of the following are the maximum flushes for a WC?

• 4 litres short flush and 6 litres long flush

• 10 litres long flush and 6 litres short flush

• 9 litres long flush and 6 litres short flush

• 3 litres short flush and 5 litres long flush

An ascending spray bidet can be described by which of the following sentences?

• A spray entering the appliance, from a tap, from above the rim of the bidet

• A spray entering the bidet from the side of the appliance

• A spray entering the area of the bidet from a high level

• A spray entering the bidet from the base of the appliance

The diagram shows a cross-section of a type of WC pan. Select the correct description from the answers below.

• Wash down with double trap

• Siphonic with an overflow

• Wash down with single trap

• Siphonic with a double trap

Which of the following should be the minimum diameter of a kitchen sink waste discharge pipe?

• 32mm

• 40mm

• 50mm

• 65mm

A self-sealing valve is designed to operate in which way when under back pressure?

• Remain tightly closed

• Always remain open

• Occasionally open

• Remain in the mid-position