WorksheetsDrainage - Pipe materials and falls
Total questions: 10
Worksheet time: 5mins
Which of the following materials is most commonly used for modern domestic drainage pipes in Great Britain?
Lead
uPVC (unplasticised polyvinyl chloride)
Asbestos cement
Glass
Why must domestic drainage pipes be laid to a fall?
To prevent the pipes from freezing
To ensure waste water flows by gravity
To make installation easier
To increase water pressure
Which of the following is NOT a commonly used material for domestic drainage pipes?
Cast iron
Copper
Clay
uPVC
What is the typical minimum gradient (fall) recommended for a 100mm domestic drainage pipe in Great Britain?
1 in 10
1 in 40
1 in 80
1 in 200
Which material is most likely to be found in older domestic drainage systems in the UK?
uPVC
Stainless steel
Cast iron
Aluminium
What is the main reason for avoiding flat (level) installation of drainage pipes?
It increases the risk of blockages
It makes the pipes more expensive
It causes the pipes to overheat
It reduces the pipe’s lifespan
Which of the following is a benefit of using uPVC pipes for domestic drainage?
They are very heavy
They are resistant to corrosion
They are difficult to cut
They require painting
What is the main function of the fall in a drainage pipe?
To allow air to enter the pipe
To slow down the flow of water
To help waste water and solids move efficiently
To increase the temperature of the water
Which of the following materials is most likely to be used for underground domestic drainage pipes?
Glass
Clay
Lead
Wood
If a drainage pipe is laid with too steep a fall, what is a possible consequence?
Solids may be left behind, causing blockages
Water will flow too slowly
The pipe will corrode faster
The pipe will freeze more easily
