When air admittance valves are used to vent drainage systems, what requirement must be met?

• a) They must be undersized

• b) They must be oversized

• c) They must be adequately sized

• d) They are not required to meet any specific size requirements

What standard covers good workmanship in drainage systems?

• a) Building Regulations Part H

• b) Building Regulations Part G

• c) BS EN 12056

• d) BS 8000

What is the statutory requirement for drainage systems in Northern Ireland?

• a) Building Regulations Part H

• b) Building Regulations Part G

• c) BS EN 12056

• d) Part N

What is the minimum depth of water seal required in a trap terminating into a soil stack?

• a) 25mm

• b) 30mm

• c) 50mm

• d) 75mm

Which statutory requirements govern drainage systems in England and Wales?

• a) Building Regulations Part H

• b) Building Regulations Part G

• c) BS EN 12056

• d) BS 8000

What is the purpose of the vent pipe in a standard domestic stack?

• a) To carry effluent away from the building

• b) To prevent flooding inside the building

• c) To allow air to enter the system to maintain atmospheric pressure

• d) To regulate water flow inside the building

Which part of the building stack carries effluent away from the building?

• a) Vent pipe

• b) Soil pipe

• c) Drain pipe

• d) Waste pipe

What is the primary function of drainage compliance with Building Regulations Part H?

• a) To regulate water pressure

• b) To remove waste water from the property

• c) To ensure adequate air ventilation

• d) To control temperature fluctuations

What is the purpose of not reducing the nominal diameter of the discharge pipe in the direction of flow?

• a) To regulate water pressure

• b) To prevent clogging

• c) To maintain a consistent flow rate

• d) To prevent trap seal loss

Which standards cover the design, installation, testing, and maintenance of drainage systems?

• a) Building Regulations Part G

• b) BS EN 12056

• c) BS 8000

• d) Manufacturers’ instructions