Worksheets6035 Drainage Revision
Total questions: 65
Worksheet time: 33mins
Which building regulation covers Drainage and Waste Disposal (Including Rainwater Guttering)?
Building Regulations Part H
Building Regulations Part G
British Standards BS EN 12056
Building Regulations Part F
Fill in the blank: British Standards BS EN 12056 covers ________ Drainage Systems.
Gravity
Vacuum
Pressure
Combined
Traps are installed on sanitary appliances to prevent foul air from entering the building.
True
False
What is the purpose of ventilation at the top of soil stacks?
To let noxious smells rise up into the atmosphere
To allow atmospheric pressure to take place within the stack
Both A and B
To prevent water flow
Fill in the blank: The bottom of the soil stack should have a ________ radius bend to help prevent back pressure and compression within the stack.
Long
Short
Narrow
Sharp
In low rise buildings (two storeys), the lowest appliance and the invert of the drain should be ________ mm.
450
300
600
750
In multi storey buildings, the distance from the lowest appliance and the invert of the drain should increase to ________ mm.
750
500
1000
1200
What is the maximum distance from the invert to the ground floor for a primary stack?
2.0m
1.3m
450mm
750mm
Automatic Air Vent (AAV) allows air in but no foul smells out.
True
False
According to the diagram, if the soil stack terminates outside the property and is installed within 3 meters of an opening window, how high above the window should the stack be installed?
900mm
300mm
1500mm
600mm
What is the purpose of fitting a vent terminal/cage at the top of a soil stack?
To prevent blockages and wavering within traps in windy areas.
To increase water pressure in the stack.
To allow rainwater to enter the stack.
To support the weight of the stack.
Which of the following is NOT one of the three types of underground drainage systems?
Separate System
Combined System
Partially Separate System
Direct System
Foul water is waste water from which of the following appliances?
Toilet
Basin
Bath
Kitchen sink
All of the above
Rain water is collected from which system?
Soil stack
Gutter system
Kitchen sink
Toilet
Identify the soil fitting shown in the image.
The image shows a type of soil pipe fitting used in drainage systems.
The image shows a type of electrical conduit fitting.
The image shows a type of water supply pipe fitting.
The image shows a type of HVAC duct fitting.
What is the waste fitting size for a washbasin?
1¼”
1½”
NA
2”
Fill in the blank: The trap diameter for a bidet is _______.
32mm
40mm
50mm
25mm
Which appliance has a seal depth for soil stack of 50mm?
Washbasin
Shower
Bowl urinal
Washing machine
Fill in the blank: The waste fitting size for a bowl urinal is _______.
1½”
2”
1¼”
2½”
What is the trap diameter for a washing machine?
32mm
40mm
75mm
100mm
Fill in the blank: The seal depth for soil stack for a WC pan with 75mm trap diameter is _______.
50mm
75mm
100mm
25mm
Which appliance does not have a specified waste fitting size?
Dishwasher
WC pan
Bath
Washbasin
Fill in the blank: The trap diameter for a dishwasher is _______.
40mm
32mm
50mm
25mm
What is the seal depth for soil stack for a bath?
50mm
75mm
100mm
NA
Look at the image. What type of plumbing trap is shown?
P Trap
S Trap
Pedestal/ Slim Line Trap
Bottle Trap
What type of plumbing trap is shown?
P Trap
S Trap
Pedestal/ Slim Line Trap
Bottle Trap
Look at the image. What type of plumbing trap is shown?
P Trap
S Trap
Pedestal/ Slim Line Trap
Bottle Trap
What type of plumbing trap is shown?
Bottle Trap
Anti-Vac Bottle Trap (Contains a small AAV)
Self-Sealing Valve (HepvO Valve/Waterless Trap)
P Trap
What type of plumbing trap is shown?
Bottle Trap
Anti-Vac Bottle Trap (Contains a small AAV)
Self-Sealing Valve (HepvO Valve/Waterless Trap)
S Trap
What type of plumbing trap is shown?
Bottle Trap
Anti-Vac Bottle Trap (Contains a small AAV)
Self-Sealing Valve (HepvO Valve/Waterless Trap)
Pedestal/ Slim Line Trap
What is the cause of trap seal loss shown?
Evaporation
Loss of water due to pressure fluctuation
Momentum of water carries trap seal away
Positive pressure from the drain system
What is the cause of trap seal loss shown?
Evaporation
Loss of water due to pressure fluctuation
Momentum of water carries trap seal away
Positive pressure from the drain system
What is the cause of trap seal loss shown?
Evaporation
Loss of water due to pressure fluctuation
Momentum of water carries trap seal away
Positive pressure from the drain system
What is the cause of trap seal loss shown?
Evaporation
Loss of water due to pressure fluctuation
Momentum of water carries trap seal away
Positive pressure from the drain system
Which of the following is a cause of trap seal loss due to high winds and no cowl at the top of the stack?
Evaporation
Wavering Out
Momentum
Compression
Which cause of trap seal loss is described as 'Large volume of water disposed of very quickly'?
Evaporation
Momentum
Compression
Induced Siphonage
Compression is a cause of trap seal loss due to back pressure caused by no Long Radius Bend used at the base of the stack.
True
False
Capillary Action in drainage systems is caused by long fibres caught in the pipe, such as hair.
True
False
Induced Siphonage occurs when multiple appliances are connected to one waste pipe, and when one discharges it causes the other trap to empty. What size waste should be used in this scenario?
32mm
40mm
50mm
75mm
Self Siphonage occurs when the waste pipe run to stack has a steep gradient causing the trap to empty itself as the appliances empty.
True
False
During the Soundness Test, the manometer should be pumped to ___ mm and allowed to stand for ___ minutes.
38 mm, 3 minutes
50 mm, 5 minutes
25 mm, 2 minutes
45 mm, 4 minutes
In the Performance Test, the trap can have no less than ___ mm of seal left after testing.
25 mm
10 mm
40 mm
60 mm
What is the name of the tool shown in the image used to plug the top and bottom of the stack during the Soundness Test?
Hollow Drain Plug
Core Barrel
Mud Balance
Slurry Sampler
Which drainage tool is shown in the image?
Plunger
Force Cup
Drain Auger
Drain Rods
Which drainage tool is shown in the image?
Plunger
Force Cup
Drain Auger
Drain Rods
Which drainage tool is shown in the image?
Plunger
Force Cup
Drain Auger
Drain Rods
Which drainage tool is shown in the image?
Plunger
Force Cup
Drain Auger
Drain Rods
Which gutter profile is shown in the diagram?
Half Round
High Capacity (Deep Flow)
Square Section
Ogee
Which gutter profile is shown in the diagram?
Half Round
High Capacity (Deep Flow)
Square Section
Ogee
Which gutter profile is shown in the diagram?
Half Round
High Capacity (Deep Flow)
Square Section
Ogee
Which gutter profile is shown in the diagram?
Half Round
High Capacity (Deep Flow)
Square Section
Ogee
Guttering is laid with a fall which is determined by the length (1:600), the gutter will drop 1mm for every 600mm in length. For example, a 3m gutter will have a ___ mm drop.
5
3
6
10
In most uPVC gutter systems, the gap for expansion is ___ mm.
10
5
15
20
Which material was used throughout the Victorian period for gutters?
Cast Iron
Aluminium
uPVC
Steel
Extruded Aluminium Guttering is starting to be used now in some modern systems as it can be produced up to ___ m in length which will have no joins.
30
10
15
20
Which type of connector is used to join half-round PVCu to half-round cast iron?
Half-round PVCu to half-round cast iron
Half-round PVCu to ogee PVCu
Half-round PVCu to ogee cast iron
Half-round PVCu to square-section PVCu
Which type of connector is used to join half-round PVCu to ogee PVCu?
Half-round PVCu to half-round cast iron
Half-round PVCu to ogee PVCu
Half-round PVCu to ogee cast iron
Half-round PVCu to square-section PVCu
Which type of connector is used to join half-round PVCu to ogee cast iron?
Half-round PVCu to half-round cast iron
Half-round PVCu to ogee PVCu
Half-round PVCu to ogee cast iron
Half-round PVCu to square-section PVCu
Which type of connector is used to join half-round PVCu to square-section PVCu?
Half-round PVCu to half-round cast iron
Half-round PVCu to ogee PVCu
Half-round PVCu to ogee cast iron
Half-round PVCu to square-section PVCu
Name the bracket shown in the image:
Fascia Bracket
Angle Bracket
Cleat Bracket
Shelf Bracket
Name the bracket shown in the image:
Rafter Bracket (Side Fitted)
Angle Bracket
Shelf Support Bracket
Joist Hanger
Name the bracket shown in the image:
Rafter Bracket (Top Fitted)
Angle Bracket
Shelf Support Bracket
Beam Clamp
Name the bracket shown in the image:
Drive in Bracket (Rise and Fall Bracket)
Clevis Bracket
Angle Bracket
U Bracket
What is the recommended distance between brackets when fitting them?
500mm
1000mm
1500mm
2000mm
List the steps involved in fitting brackets and determining the fall.
1. Establish the installation fall. 2. Fix the first brackets at the highest level on the run. 3. Fix the last bracket to give the amount of fall required. 4. Attach a string line between the two brackets. 5. Position the rest of the brackets at the recommended centres.
1. Fix all brackets at equal heights. 2. Attach a string line after all brackets are fixed. 3. Establish the fall after installation. 4. Position brackets randomly.
1. Establish the installation fall. 2. Fix the last bracket at the lowest level. 3. Attach a string line between all brackets. 4. Position the rest of the brackets at irregular centres.
1. Fix the first bracket at the lowest level. 2. Establish the installation fall. 3. Attach a string line before fixing any brackets. 4. Position the rest of the brackets at random intervals.
