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WorksheetsDrainage Systems 6035-02 | Part 2
Total questions: 36
Worksheet time: 20mins
Of the following, the air admittance valve must not:
Have available access for maintenance
Be installed less than 1 metre above the highest spillover level
Have sufficient ventilation if located in boxing
Be insulated against freezing
The trap seal depth(mm) for basins or bidets is?
50mm
75mm
The purpose of the discharge branches having a gradient is to maintain:
The correct trap seal depth
A self-cleaning velocity
Excessive discharge
Identify the waste manifold.
Select the correct component: Bath trap
Which of the following is favoured by local authorities?
Combined system
Separate system
If a branch has multiple appliances on the ventilated branch system, what size must the branch be?
25mm
28mm
32mm
40mm
What is the component shown? (Written answer)
(a)
Which of the following is not an advantage of having cast iron guttering installed?
Strong
Difficult to maintain
Durable
The component shown is?
(a)
Which of the following would not be a cause for collapsed drain?
Age
Major blockages
Ground movement
Incorrect installation
What Building Regulation does the performance tests need to meet?
Part L
Part P
Part G
Part H
The component shown is not suited for which appliance?
Countersunk basin
Pedestal basin
Kitchen sink
If you realise that a customer’s WC is connected to the surface water drain, what should you do?
Advise the customer never to use the WC
Advise the customer that it requires connecting to the foul water drain
Advise the customer that the WC pan needs to be changed
Nothing
Which of the following is a false advantage to PVCu guttering?
Short life expectancy
Easy to install
Corrosion free
Smooth finish
What must the plumber ensure when working with cleaning chemicals? (Choose 3)
Correct training completed
COSHH data sheet is checked
Correct PPE is worn
Room is well ventilated
STATEMENT: All systems must comply with part H and BS EN 12056, which covers design, installation, testing and maintenance.
True
False
Select the correct PVCu profile: Square line
Regular blockages from hair and soap residue would occur on which type of appliance?
Sinks
Basins
Bidets
Baths
The waste pipe diameter and gradient must maintain a trap seal depth of at least how much after an appliance has been used?
25mm
50mm
75mm
100mm
What is the name of the section referred to in the image shown?
The vent pipe
The soil pipe
What is the reason for the access being provided above the spillover level of the highest appliance?
To allow a viewpoint high enough
To access any spillover levels below
To prevent odours from exiting
To allow for clearing blockages
Select the correct trap seal loss: This occurs when a large amount of water is suddenly discharged down a trap.
Momentum
Leaks
Self-siphonage
Compression
Most manufacturers interpret this standard as a fall of?
1:600
1:700
1:800
1:900
Fill in the missing section of the table.
2.0m
3.0m
1.8m
1.5m
Older systems had problems with compression and back pressure for the discharges, which has been rectified in new systems by introducing which specific fitting?
Soil branches
Long radius bends
Vent cowls
Rodding access's
The size of waste pipe for an adults WC is?
32mm
40mm
75mm
100mm
If there is a need for a parallel junction, what fittings need to be included? (Choose 2)
Rodding access
Vent cowl
Long radius bend
Strapped boss
What is the component shown? (Written answer) Abbreviation answer not accepted.
(a)
Care should be taken when working as coming into contact with human waste leads tge chance of contracting?
Malaria
Hepatitis
Weil's disease
Dermatitis
Select the correct description for the diagram shown.
If the soil stack terminates outside the property and is installed within 3 metres of an opening window, the stack should be installed at least 900mm above the window
If the soil stack terminates outside the property and is installed within 1 metre of an opening window, the stack should be installed at least 500mm above the window
If the soil stack terminates outside the property and is installed within 2 metres of an opening window, the stack should be installed at least 750mm above the window
If the soil stack terminates outside the property and is installed within 4 metres of an opening window, the stack should be installed at least 1100mm above the window
Which of the following is not a purpose of a rainwater system?
Provide a means of water collection
Promote ground erosion
Prevent water penetrating the property
Protect the properties foundations
Which of the following is a disadvantage of having cast aluminium guttering installed?
Does not rust
Strong
Expensive to install
Durable
What British Standards governs good workmanship?
BS 6767
BS EN 12100
BS 8000
BS 6700
What is the maximum length the waste pipe can be for WC's?
1.7m
3.0m
6.0mm
What problem may occur if the waste pipe gradient from a washbasin is too steep?
Compression
Capillary action
Momentum
Self-siphonage
