Unit 331 / 2 Cold Water Layout for Multi Storey Dwellings

Multiple Choice

What is the main reason why multi-storey buildings require boosted cold water systems?

• To increase water temperature

• To supply water to the highest part of the building

• To reduce water consumption

• To filter impurities from water

Multiple Choice

Which of the following is a key feature to consider when designing a cold water system for multi-storey dwellings?

• The color of the pipes

• Component layout features

• The number of windows in the building

• The type of flooring used

Multiple Select

Which of the following statements about direct boosting to a drinking water header and duplicate storage cisterns are correct?

• This system supplies only drinking water.

• Cisterns are located at a low level.

• The drinking water header provides limited storage for sinks when the pump is not in operation.

• Non-drinking water is supplied by the system.

Multiple Select

Which of the following are functions of the compressed air in an expansion vessel system?

• Maintains system pressure

• Prevents ingress of dust and insects

• Boosts water to higher levels

• Controls overflow pipe

Multiple Choice

Which component in an indirect boosting system using an expansion vessel is responsible for maintaining the system pressure?

• Pneumatic pressure vessel

• Booster pump

• Float switch

• Overflow pipe

Multiple Choice

Which of the following statements about large cisterns is correct?

• Sectional cisterns can be assembled on site and tailored to fit any space.

• Overflow pipes in large cisterns are always the same size as the inlet pipe.

• Large cisterns are only constructed in one piece.

• There is no risk of damage from large cisterns.

Multiple Choice

Which of the following best describes the difference between one piece large cisterns and sectional large cisterns?

• One piece cisterns are made as a single unit, while sectional cisterns are assembled from multiple panels.

• Sectional cisterns are smaller than one piece cisterns.

• One piece cisterns require on-site assembly, while sectional cisterns do not.

• Sectional cisterns are only used for decorative purposes.

Multiple Choice

What additional feature helps the equilibrium float-operated valve close, apart from the float valve action?

• Water pressure of the incoming mains

• Spring mechanism

• Manual lever

• Gravity

Multiple Select

Which of the following statements about pressure-operated float valves are correct?

• They use the pressure of the cold water main to aid valve closure.

• They are controlled by a pilot valve and float.

• They work well with low pressure systems.

• They are suitable for large cisterns with high pressure supply.

Multiple Choice

Which of the following is a key benefit of using a Keraflo delayed action float valve in a cistern?

• It allows continuous water flow regardless of water level

• It eliminates water hammer and reduces wasteful pump operation

• It increases the water pressure in the system

• It requires frequent manual adjustment

Multiple Choice

Why is it important to keep the number of linked cisterns to a minimum in multiple cistern installations?

• To reduce installation costs

• To avoid water stagnation and quality deterioration

• To increase water storage capacity

• To simplify maintenance

Multiple Choice

Which of the following statements about rainwater harvesting is NOT true?

• Rainwater harvesting can help reduce stress on UK water supplies.

• Rainwater collected from roofs is suitable for drinking after filtration.

• Rainwater can be used for flushing WC cisterns and cleaning clothes.

• Pipework for rainwater should be installed for easy identification.

Multiple Choice

Which of the following statements best explains why sectional cisterns are considered versatile?

• They are made from a single piece of material.

• They can be tailored to fit any space or capacity.

• They require no maintenance.

• They are always smaller than other cisterns.

Multiple Choice

Which of the following is NOT an objective of this session on cold water system planning and design for multi-storey dwellings?

• Explain cold water system component layout features for multi-storey dwellings

• Describe break cistern arrangements

• Define systems for drinking water provision

• Design hot water system layouts