Worksheets6035 Drainage Outcome 1 part 1
Total questions: 43
Worksheet time: 22mins
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 Building Regulations statutory requirements for drainage systems?
Scotland and Wales
England and Wales
Northern Ireland and Scotland
England and Scotland
What does BS 8000: pt 13 refer to?
Good safety practices
Good environmental practices
Good workmanship
Good manufacturing practices
Why is it important to follow manufacturers' instructions carefully?
They are always the same
They vary and ensure proper use
They are optional
They are only for reference
What is the primary function of drainage pipework systems in a dwelling?
To supply clean water to appliances
To take solid and liquid wastes out of the dwelling
To regulate indoor temperature
To provide ventilation
Why must drainage pipework systems be done safely and hygienically?
To prevent water wastage
To avoid any health problems
To reduce noise pollution
To save energy
Through what components is the waste product discharged in a drainage pipework system?
Through a filter, down a discharge pipe, to a water tank
Through a trap, down a discharge branch, to a soil stack, and to the underground sewer
Through a valve, down a discharge pipe, to a septic tank
Through a pump, down a discharge branch, to a soil stack, and to the underground sewer
What is the function of the vent pipe in a standard domestic soil stack?
To allow air to enter the system to operate at atmospheric pressure
To remove waste water from the dwelling
To heat the water in the system
To filter the air entering 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 overheat
It could result in water contamination
It could increase water pressure in the system
What is the function of the soil pipe in a soil stack system?
To provide ventilation
To take all the effluent away from the building
To supply fresh water
To support the structure of the building
Which standards must all soil stack systems comply with?
Part A and BS EN 12056
Part B and BS EN 12056
Part H and BS EN 12056
Part C and BS EN 12056
Which standards must appliances, pipes, and fittings comply with?
American standards
European standards
Asian standards
Australian standards
What is the purpose of providing drainage for all water supply points inside the building?
To prevent water wastage
To prevent flooding
To increase water pressure
To reduce water temperature
What must 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 minimum depth of water seal in a trap according to the compliance requirements?
25mm
50mm
75mm
100mm
What must the waste pipe diameter and gradient maintain after an appliance has been used?
A trap seal depth of at least 10mm
A trap seal depth of at least 25mm
A trap seal depth of at least 50mm
A trap seal depth of at least 75mm
What should not be reduced in the direction of flow according to the compliance requirements?
The depth of water seal
The waste pipe diameter
The nominal diameter of the discharge pipe
The gradient of the waste pipe
What must be adequately sized when used to vent drainage systems?
Water seals
Waste pipes
Discharge pipes
Air admittance valves
Why does the primary ventilated stack not require extra ventilation?
It has a built-in fan
It uses a special filter
The discharge branches are closely grouped around the stack
It is located outdoors
What is the function of the soil stack in a primary ventilated stack system?
To filter water
To allow pressure fluctuations without affecting the trap seal loss
To provide extra ventilation
To store waste
What type of system is depicted in the image?
Secondary ventilated stack
Primary ventilated stack
Combined stack system
Separate stack system
How far is the invert of the drain from the base ?
300mm
450mm
600mm
750mm
What does the term "self-cleaning velocity" mean in the context of a primary ventilated stack system?
The liquid flows slowly to prevent blockage.
The liquid carries the solids as it flows, reducing the risk of blockage.
The liquid is filtered before entering the stack.
The liquid is treated with chemicals to prevent blockage.
What is the maximum length (in meters) for the waste pipe of a WC?
1.7
3.0
6.0
3.5
What is the waste size (in mm) for a basin or bidet?
40
32
75
100
What is the gradient range (in mm/m) for a washing machine/dishwasher waste pipe?
18-22
18-50
18-90
18-75
What is the trap seal depth (in mm) for a bath (40mm)?
50
75
32
100
Which appliance has a waste size of 40 mm and a maximum length of 3.0 meters?
WC
Basin or bidet
Washing machine/dishwasher
Sink
Where are junior WCs often installed?
High schools
Colleges
Nursery schools and infant schools
Universities
If an installation exceeds the maximum length stated, what should the next pipe size up be for a 32mm pipe?
35mm
40mm
45mm
50mm
If an installation exceeds the maximum length stated, what should the next pipe size up be for a 40mm pipe?
45mm
55mm
50mm
60mm
What is the minimum pipe size that should be used if multiple appliances are connected to a single discharge pipe?
32mm
40mm
45mm
50mm
What is the purpose of installing a long radius bend at the base of a soil stack?
To increase the effluent's temperature
To maintain the effluent's velocity when changing from vertical to horizontal movement
To reduce the effluent's velocity
To increase the effluent's pressure
What problem did older systems without a long radius bend face?
Increased effluent temperature
Reduced effluent velocity
Compression or back pressure for the discharge
Increased effluent pressure
What alternative to a long radius bend is mentioned in the text?
A single 90 degree connector
Two 45 degree connectors
A straight pipe
A flexible hose
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, at the base of the stack
In the middle of the stack
At the end of the stack
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 distance from the drain invert level to the lowest connection to the soil stack?
450mm
500mm
600mm
750mm
What type of entrance or angle should branch connections to the soil stack be made with to aid the flow of effluent?
Swept entrance or at an angle
Straight entrance
Perpendicular entrance
Horizontal entrance
What must be avoided to prevent trap seal loss and effluent crossflow in a primary ventilated stack system?
Installing connections at the same height
Installing connections at different heights
Installing connections at a vertical distance of 300mm
Installing connections at a vertical distance of 100mm
What is the vertical distance downwards that no other connection may be installed opposite to an existing branch connection to avoid crossflow?
100mm
150mm
200mm
250mm
What is the range of the existing branch connection to a stack where no other connection may be installed opposite to avoid crossflow?
50-100mm
82-160mm
100-200mm
120-180mm