WorksheetsDrainage Pipework prior knowledge
Total questions: 7
Worksheet time: 4mins
What is the main purpose of the vent pipe in a soil stack system?
To allow air to enter the system and keep it at atmospheric pressure
To take all the effluent away from the building
To bring water into the building
To heat the air in the building
Suppose you have a 40mm pipe and need to increase the size due to installation length. What size should you use?
32mm
40mm
50mm
75mm
What is the minimum distance from the drain invert level to the lowest connection to the soil stack in a low-rise building with four storeys?
450mm
750mm
300mm
600mm
Explain why it is important to use the correct angle or radius when connecting a branch pipe to a soil stack.
It helps the water flow smoothly and prevents blockages.
It makes the pipes look colorful.
It uses less water.
It makes the pipes heavier.
Which of the following is most likely to cause a blockage in a soil stack system?
Connecting pipes at the correct angle
Incorrect pipe gradient
Using a vent pipe
Installing a larger diameter pipe
What is the function of a trap in a branch pipe connected to a soil stack?
To reduce the pipe length
To heat the wastewater
To increase water pressure
To prevent foul gases from entering the building
When increasing the length of a waste pipe, what should be done to maintain proper flow?
Install the pipe vertically only
Add more bends to the pipe
Decrease the pipe diameter
Increase the pipe diameter
