WorksheetsLevel 2 drainage
Total questions: 22
Worksheet time: 12mins
Identify two potential issues that arise from a soil waste discharge being too steep?
It might leave solid sediment in the pipe causing blockage
The trap may be pulled, leading to the loss of water seal
Increased water pressure
Improved drainage efficiency
What is the recommended gradient for a 110mm soil pipe branch
5mm for every 4 meter's
100mm for every 4 meter's
15mm for every 4 meter's
20mm for every 4 meter's
Which fitting is installed at the base of a soil stack?
P-trap
Cleanout plug
Access point
Vent stack
What is the minimum size pipe that a soil stack vent pipe can be?
50mm
75mm
100mm
125mm
In parts of the UK, it is common that living spaces are being built below ground. What valve must be installed at the manhole chamber
Pressure relief valve
Non-return valve
Gate valve
Ball valve
Under the building regulations which approved document relates to drainage and waste disposal?
Approved Document A
Approved Document F
Approved Document G
Approved Document H
State the purpose of the guidance of building regulations approved documents?
They are made for aesthetic purposes
They are primarily for the health safety and welfare of people
They provide guidance for architectural designs
They regulate building materials only
When working on above ground drainage, e.g. soil pipes in voids or roof spaces, what safety classification procedure this fall into?
Working at heights
Working with electricity
Working in confined spaces
Working with hazardous materials
What is the correct name for this?
Bath trap
P-trap
Waterless trap
Bottle trap
Identify the appliances from the list below that carry foul water
Bidet
WC
Wash hand basin
Kitchen sink
When designing sanitary pipework where flush volumes on WC's are as low as 4ltr's, which British standard is applied for guidance?
BSEN12056
BS 6700
BS 7671
BS 5839
Under working and test conditions of waste and soil pipes, what is the minimum water seal depth of traps to be retained?
10mm
15mm
20mm
25mm or equivalent
True or false. Branch pipe should not discharge into hoppers
True
False
Where would you find a gully?
On rooftops
At ground level or a basement
In kitchens
inside bathrooms
State what type of soil stack is used when appliances are at ground level only?
Vent stack
Stub stack
Branch stack
Main stack
What is the correct name for this drainage fitting?
Bird cage
Automatic air vent
110mm Socket
What is the correct name for this below ground drainage fitting?
Soak-away connector
Long radius bend
Swept elbow
90° long elbow
What are the faults with this soil pipe?
Insufficient support along the whole length of the pipework
Insufficient drainage around the pipe.
Below ground pipework used above ground
What is the correct name for this?
Fire collar
Coupling
Air grill
Intumescent sealant
As per the building regulations what distance does a soil stack need to be from an opening window?
What is this?
Waste pipe manifold
Rodding access
Flush pipe
Gulley grid
What building regulations cover drainage and waste disposal?
Building regulations part H drainage and waste disposal.
Building regulations part G sanitation, hot water safety and water efficiency.
Building regulations part L conservation of fuel and power
Building regulations part F ventilation
