Worksheets309 Sanitation systems 1 Quiz
Total questions: 24
Worksheet time: 12mins
If a macerator ran for a long time after flushing, what could be the problem?
Blockage in the area of the pump within the unit
Excessive volume of solids
Incorrect electrical connection
Timer requiring resetting
Where can appliance discharge rates be obtained?
The data plate on an appliance
British Standards
The clerk of the works
The Building Regulations
If a waste water lifter pump began to cycle on and off, what could be the reason?
Intermittent electrical fault on the supply connection
Excessive volume of waste being processed
A dripping tap or leaking connection in the house
A designed self-priming process
When servicing a sink waste disposal unit, you discover an excessive amount of debris in the unit. How would you proceed?
Safely isolate the unit and remove the debris
Ask the end user questions to ascertain the origin of the debris
Safely isolate the unit and decommission
Flush with clear water
Which of the following make an air admittance valve (AAV) unsuitable for sanitary pipework installations?
Venting to atmosphere at intermittent points on the run of the drain
The inclusion of a stub stack
An interceptor trap
A waste water lifter
Which of the following best describes a cesspool?
An installation which processes solids and liquids
A pit where debris naturally permeates into the water table
A receptacle which stores effluent that is later used as a fertiliser
An installation that stores solids and liquids that are removed at a later date
Who should be consulted before the beginning of servicing or any type of remedial work on a sanitary appliance?
The local authority
The manufacturer
The customer
The previous installer
If a problem has been reported about the operation of a waste water lifter, what would be the first step to take to help analyse the issue?
Talk to the previous installer and seek their advice
Order parts based on discussion with the client
Do not operate appliance; dismantle basic components
After talking with the customer, operate the appliance and check for operation, in accordance with the manufacturer’s instructions
How should the floor surface of a walk-in wet room be installed?
On a flat plane
With an angle which falls to a central or perimeter gully
With non-porous tiles
With a fallout of the wet room area to an external gully
How much trap seal should remain after the full performance testing procedure has been completed?
10mm
50mm
75mm
25mm
Which of the following sentences could best describe safe electrical isolation of a macerator?
Remove electrical wire from macerator unit and make safe in strip connector
Turn off rocker switch
Remove the fuse from spur outlet in the wall
Remove the fuse from spur outlet, turn off and lock MCB at consumer unit, and leave a sign. Keep any components capable of accidentally reconnecting the electrical supply in a safe place on your person
Spacing requirements for people to move safely and comfortably in bathrooms can be found in which standard?
BS EN 120156
BS EN 12380
BS 6700
BS 6465
What minimum distance is required in front of a close coupled WC?
800mm
600mm
1,350mm
750mm
What is the name of the process which ensures that a walk-in wet room does not leak?
Encapsulation
Intumescent sealing
Tanking
Silicone sealing
Which of the components mentioned below could require regular replacement on a WC macerator?
Impeller
Fused spur
Carbon filter
NRV
Discharge units are used to calculate which of the following?
The output of the appliances
The cost of the installation
The size of the soil stack
The self-cleansing velocity of the whole system under full flow
If a length of pipework was too long on a waste water lifter, which of the following situations could occur?
The motor would continue to run after the water has been drawn off
Water hammer would begin to develop
Loud gurgling and popping noises would be emitted from appliances
A vacuum would develop in appliance wastes
When calculating stack sizes, what does the term ‘K’ refer to?
Discharge units
Flow rates
Frequency factor
Hydraulic capacity
What is the minimum space provision in front of an enclosed shower tray?
700mm
800mm
900mm
950mm
What effect does increasing the gradient of the discharge branch pipe have on its permissible length?
It will increase
It will decrease
It has no effect
All gradients must be fixed at 22mm/m
Which two of the following factors are least likely to be considered during the selection of sanitary appliances for a new bathroom?
Cost
Country of manufacture
Space temperature
Availability
Client’s taste
The trap in the image below can be used to prevent trap seal loss caused by what fault?
Evaporation
Wavering out
Self-siphonage
Compression
If an architect places an advertisement in a building journal or newspaper to invite contractors to submit tenders within a specified time for plumbing work, what type of tendering is taking place?
Open tendering
Closed tendering
Selective tendering
Repeat tendering
Clear information regarding the proposed costs and charges should be included in a quote for plumbing work to help prevent what?
Disagreements between client and plumber regarding end costs
Disagreements between client and plumber regarding timings
Disagreements between client and supplier regarding end costs
Disagreements between client and supplier regarding timings
