WorksheetsWater Supply and Pipe Specifications Quiz
Total questions: 59
Worksheet time: 30mins
What is the minimum depth required for a communication pipe?
750mm
500mm
1000mm
1350mm
What is the minimum diameter for a service pipe?
25mm
15mm
50mm
10mm
What is the minimum diameter for a rising main?
15mm
25mm
10mm
20mm
What is a requirement for internal water meters according to the image?
They need to be cross bonded for safety.
They must be installed outdoors.
They should be painted red.
They need to be connected to a gas line.
What is shown in the image as a feature of external water meters?
A boundary meter box.
A solar panel.
A digital display.
A water pump.
What color is the MDPE pipe used to identify wholesome water?
Red
Green
Blue
Yellow
What is the minimum size for a modern property pipe?
15mm
20mm
25mm
30mm
What type of copper can be used according to the document?
Hard copper
Soft copper (R220)
Recycled copper
Alloy copper
Where is the meter commonly installed at a property?
Inside the house
On the roof
At the property boundary in a chamber
In the basement
Under which regulations is everything from the external stop valve at the meter regulated?
Water Regulations 1995
Water Regulations 1999
Water Regulations 2005
Water Regulations 2010
According to the Water Regulations, where should a stop valve be located?
Outside the building, below floor level
Inside the building, above floor level
Inside the building, below floor level
Outside the building, above floor level
What is the maximum recommended height for MDPE above floor level?
100mm
150mm
200mm
250mm
Which type of stop valve can be used according to the Water Regulations?
Ball valve (BS1234)
Screwed valve (BS5678)
Screwdown (BS1010) or level arm (BS6675)
Gate valve (BS9101)
How does the stop valve create a watertight seal?
By using a spanner or key
By turning the handle to screw down a jumper with a washer
By replacing the head gear
By installing above the incoming stop valve
What is a cost-effective method of repair if the valve jams?
Replace the entire valve
Use a spanner or key
Replace the head gear only
Install a DOV
Where must a DOV be installed in the system?
At the highest point in the system
Above the incoming stop valve and at every low point
Next to the stop valve
Below the stop valve
What must a plumbing system comply with according to the requirements?
Building Codes
Water Regulations
Electrical Standards
Safety Protocols
What is every plumber required to prevent?
Air pollution
Soil erosion
Contamination of wholesome water
Noise pollution
What must be given in advance according to the requirements?
Payment
Notice of installations
Equipment list
Employee schedule
What benefit is mentioned for becoming an Approved Plumbing Contractor?
Free tools
Discounted materials
Passing the Water Regulations training course
Extended warranty
Who has produced the guide to the Water Regulations?
EPA
WRAS
OSHA
WHO
What are the two key tests with cold water systems?
Temperature and pH level
Pressure and flow rate
Hardness and salinity
Chlorine level and turbidity
Where is pressure normally first tested in a cold water system?
At each outlet
Near the point of entry
At the water heater
At the main valve
Where is flow rate tested in a cold water system?
Near the point of entry
At the water meter
At each outlet
At the main valve
What does pressure refer to in the context of water flow?
The temperature of the water
The color of the water
The force behind water flow
The taste of the water
When is a more accurate pressure reading necessary in domestic situations?
When using a garden hose
When installing water softeners or combination boilers
When washing dishes
When watering plants
What are the two basic means of creating pressure in plumbing systems?
Using a heater or a cooler
Fitting a pump or using the weight of water (the head)
Adding salt or sugar
Increasing temperature or decreasing temperature
What is the flow rate a measure of?
The temperature of water
The volume of water discharging to an appliance
The pressure of water
The speed of water flow
How is flow rate typically measured?
Litres per hour
Litres per second
Litres per minute
Litres per day
What would happen if the flow rate was poor?
The bath would fill up faster
The bath would take longer to fill up
The water would be colder
The water would be hotter
What is a method to check flow rate in a domestic situation?
Using a thermometer
Using a flow cup or weir cup
Using a pressure gauge
Using a stopwatch
What is the equivalent of 60 litres/min in litres per second?
0.1 l/sec
1 l/sec
10 l/sec
0.01 l/sec
Which of the following factors can affect pressure and flow?
Color of the pipes
Daily demand (peak periods)
Temperature of the water
Type of flooring
What is one of the factors that can influence the pressure and flow in a property?
Age of property
Type of paint used
Number of windows
Height of the building
Which of the following is NOT a factor affecting pressure and flow?
Location
Number of elbows
Blockages
Type of furniture
How can the size of the distribution main affect pressure and flow?
It has no effect
It can increase pressure
It can decrease pressure
It can both increase and decrease pressure
What type of pressure is used in a direct cold water system?
Low pressure
Medium pressure
High pressure
Variable pressure
What is the usual size of the service pipe to the house in a direct system?
15mm MDPE
20mm MDPE
25mm MDPE
30mm MDPE
What material is typically used for the connection inside the house in a direct system?
Steel
Copper
PVC
Lead
What precaution is important to take in a direct water system?
Insulation
Backflow prevention
Pressure reduction
Temperature control
What type of water system supplies all the cold water directly on top of each outlet at high pressure?
Indirect system
Direct system
Gravity-fed system
Pumped system
In a direct water system, what is the only stored water used for?
Cold water supply
Hot water system via the cylinder
Garden irrigation
Fire suppression system
How many DOVs are required to drain a direct water system?
Two
Three
One
Four
What is the diameter of the pipework in a high-pressure direct water system?
10mm
20mm
15mm
25mm
What is a characteristic of a direct system using a combination boiler?
It stores hot water in a tank.
It uses a separate heater for hot water.
Both hot and cold water are directly off mains.
It requires a water pump for circulation.
In a direct system with a combination boiler, what is absent?
Stored water
Cold water supply
Hot water supply
Water filtration system
What is similar to a direct system with a combination boiler?
A vented hot water system
An unvented or water jacket heater hot water system
A solar water heating system
A geothermal heating system
What is one advantage of a direct water system?
Requires storage cisterns in lofts
Potable water at every draw off point
Pressure is always low
Water is not available at all draw off points
What is a disadvantage of a direct water system?
Consistent pressure throughout the day
No need for care when fitting showers
If the mains is turned off, you are without water
Always high pressure at peak times
During which times can pressure be very low in a direct water system?
9am to 11am
6.30am to 8.30am and 5pm to 7pm
12pm to 2pm
3pm to 5pm
What is the main characteristic of an indirect cold water system?
High pressure throughout the system
Low pressure except for the kitchen sink
Direct supply to all outlets
No storage cistern involved
What is the typical size of the distribution pipe from the storage cistern in an indirect system?
15mm or 20mm
22mm or 28mm
30mm or 35mm
40mm or 45mm
What type of system is described as feeding most outlets in the property?
Direct system
Indirect system
High pressure system
Closed system
What is the minimum capacity for the water cistern in the indirect system?
100 litres
150 litres
230 litres
300 litres
What is one advantage of an indirect system?
It is less expensive.
It provides a stored supply of hot water if mains are turned off.
It requires less pipework in roof space.
It offers multiple draw-off points for potable water.
Which of the following is a disadvantage of an indirect system?
The system pressure is affected by peak time demand.
It is less expensive.
There is a risk of freezing due to more pipework in roof space.
It provides multiple draw-off points for potable water.
Why might an indirect system be more expensive?
It has fewer draw-off points.
It requires less maintenance.
It involves more pipework and potential contamination risks.
It offers constant pressure.
What is the required capacity range for a cold water storage cistern if it supplies both hot and cold water?
100-150 liters
150-200 liters
230-250 liters
300-350 liters
According to the Water Regulations, what is the capacity range for a cistern supplying either hot or cold water?
50-100 liters
100-150 liters
150-200 liters
200-250 liters
