WorksheetsAbove Ground Drainage
Total questions: 37
Worksheet time: 19mins
Which part of the building regulations deals with drainage and waste disposal?
Part G
Part H
Part N
Part A
What does Building Regulations part G cover?
Drainage and waste disposal
Electrical safety
Sanitation, hot water safety, and water efficiency
Fire safety
In which regions are the Building Regulations statutory requirements for drainage systems?
Scotland and Wales
England and Wales
Northern Ireland and Scotland
England and Scotland
What do drainage pipework systems take out of the dwelling?
Air and dust
Solid and liquid wastes
Food and water
Light and sound
Why must drainage pipework systems be done safely and hygienically?
To save money
To avoid any health problems
To make the house look nice
To keep the pipes clean
Where is the waste product discharged after going through a trap?
Into the garden
Into the kitchen sink
To a soil stack and underground sewer
Into the attic
What is the purpose of the vent pipe in a soil stack?
To allow air to enter the system to operate at atmospheric pressure
To carry waste water out of the dwelling
To prevent water from entering the system
To filter foul air from the system
What could happen if the pressure in the vent pipe varies?
It could lead to trap seal loss, allowing foul air to enter the dwelling
It could cause the system to overflow
It could stop the system from operating
It could cause the pipes to burst
What is the function of the soil pipe in a soil stack?
To bring fresh air into the building
To take all the effluent away from the building
To provide water supply to the building
To support the building structure
What must all systems comply with according to the document?
Part A and BS EN 12056
Part B and BS EN 12056
Part H and BS EN 12056
Part C and BS EN 12056
What does BS EN 12056 cover?
Design, installation, testing, and maintenance
Design, construction, and demolition
Installation, painting, and cleaning
Testing, painting, and maintenance
Which standards should appliances, pipes, and fittings comply with?
American standards
European standards
Asian standards
Australian standards
What should be provided for all water supply points inside the building to prevent flooding?
Heating
Ventilation
Drainage
Insulation
What should be installed with appliances connected to the drainage system to prevent foul air from entering the building?
A filter
A pump
A trap
A valve
What is the most common type of domestic stack?
Secondary ventilated stack
Primary ventilated stack
Tertiary ventilated stack
Quaternary ventilated stack
Why does a primary ventilated stack not require extra ventilation?
Because it is very small
Because it is very large
Because the discharge branches are closely grouped around the stack
Because it is made of special material
What is the function of the soil stack in a primary ventilated stack system?
To allow pressure fluctuations without affecting the trap seal loss
To provide extra ventilation
To discharge waste directly
To support the structure of the building
What is the maximum gradient that discharge branches should have?
2 degrees
5 degrees
10 degrees
15 degrees
What is the ideal gradient for discharge branches to maintain a self-cleaning velocity?
1 degree
2 degrees
2½ degrees
3 degrees
What does self-cleaning velocity mean?
The liquid flows slowly
The liquid carries the solids as it flows
The liquid stays still
The liquid evaporates quickly
What is the benefit of self-cleaning velocity?
It increases the risk of blockage
It reduces the risk of blockage
It makes the water dirty
It stops the water flow
What should the next pipe size be if an installation exceeds the maximum length stated for a 32mm pipe?
40mm
50mm
32mm
60mm
If multiple appliances are connected to a single discharge pipe, what is the minimum pipe size that should be used?
32mm
40mm
50mm
60mm
What should the next pipe size be if an installation exceeds the maximum length stated for a 40mm pipe?
32mm
40mm
50mm
60mm
What is installed at the base of a soil stack to maintain effluent velocity when changing from vertical to horizontal movement?
A short radius bend
A long radius bend
A straight pipe
A 90 degree connector
What problem did older systems without a long radius bend face?
Increased water flow
Reduced water flow
Problems with compression or back pressure
No problems at all
What alternative connectors might some systems use instead of a long radius bend?
Two 90 degree connectors
Two 30 degree connectors
Two 45 degree connectors
Two 60 degree connectors
Where is it good practice to position a rodding access in a primary ventilated stack?
At the top of the stack
Just above ground level
In the middle of the stack
At the bottom of the stack
Why is it good practice to position a rodding access in a primary ventilated stack?
To allow air to flow
To prevent water from escaping
In case of any blockages
To make the stack taller
What is the lowest connection to the soil stack on low-rise buildings (two storeys) from the drain invert level?
450mm
500mm
600mm
750mm
For buildings up to five storeys, what is the minimum connection to the soil stack from the drain invert level?
450mm
500mm
600mm
750mm
What type of stack is discussed in the document?
Primary ventilated stack
Secondary ventilated stack
Tertiary ventilated stack
Non-ventilated stack
What should the angle or radius be for branch connections with a diameter up to 75mm?
45° angle or 25mm radius
50° angle or 30mm radius
60° angle or 35mm radius
70° angle or 40mm radius
What should the angle or radius be for branch connections with a diameter over 75mm?
45° angle or 50mm radius
50° angle or 60mm radius
55° angle or 70mm radius
60° angle or 80mm radius
What size pipework is used on a bathroom basin?
32mm
40mm
22mm
110mm
What is the purpose of a self-sealing trap?
To prevent foul smelling odor's
it creates a seal and blocks wastage
It prevents rodents getting into the pipework
It reduces the waste pipe down from 32mm to 28mm
What size waste pipe is used on a bath?
32mm
40mm
60mm
35mm
