WorksheetsRainwater Systems Quiz
Total questions: 20
Worksheet time: 10mins
What are the two important factors to consider with the roof area in rainwater systems?
The color of the roof and the material used
The actual size of the roof area and the angle of the roof area
The height of the building and the number of windows
The type of gutters and the number of downspouts
What are the two factors that affect the amount of rainwater collected and the velocity at which the water enters the guttering?
Roof area and slope
Roof color and material
Roof height and width
Roof length and texture
What is the purpose of a running outlet in a rainwater system?
To connect the gutter and the downpipe
To store rainwater
To filter debris from rainwater
To heat the water
How does the position of a running outlet in a rainwater system get determined?
By the color of the roof
By the location of the drains of the property
By the amount of rainfall
By the size of the building
What happens when there are more outlets in a rainwater system?
The rainwater travels a longer distance in the gutter
The discharge efficiency decreases
The rainwater travels a shorter distance in the gutter
The system becomes more expensive
What is the primary function of a rainwater outlet in a rainwater system?
To collect rainwater from the roof
To provide ventilation for the building
To supply water to the garden
To heat the building
Where does the rainwater outlet direct the collected water in a typical rainwater system?
Into the building's interior
Into a surface water sewer in the road
Into a heating system
Into a water purification system
What should you check to find out the flow capacity of a rainwater system outlet?
The color of the outlet
The manufacturer's data sheet
The size of the roof
The weather forecast
How can you determine the number of outlets needed for a roof line?
Multiply the roof area by the outlet size
Divide the expected flow rate of the roof area by the flow rate for the outlet
Add the length and width of the roof
Subtract the outlet size from the roof area
According to BS EN 12056, what is the recommended fall for gutters per metre length?
1-3mm
4-6mm
7-9mm
10-12mm
What should the gradient of the eaves gutter prevent?
Allowing rainwater to pool
Allowing rainwater to run off the roof and miss the gutter
Allowing rainwater to freeze
Allowing rainwater to evaporate
What is the standard fall ratio for gutters as interpreted by most manufacturers?
1:600
1:500
1:700
1:800
How much drop is there every 600mm length according to the standard fall ratio?
1mm
2mm
3mm
4mm
What is the total drop in 15 meters according to the standard fall ratio?
25mm
20mm
30mm
35mm
Why is the accepted fall ratio important for gutter systems?
It allows efficient flow of rainwater and keeps the gutter silt free.
It increases the water pressure.
It reduces the cost of installation.
It makes the gutter more aesthetically pleasing.
Where are modern gutter systems with little or no fall more commonly used?
Large, commercial roof lines
Small residential homes
Garden sheds
Temporary structures
What is the effect of changes in direction in a gutter system?
They improve the efficiency of water flow.
They have no impact on water flow.
They reduce the efficiency of water flow.
They increase the water pressure.
What should be avoided in a gutter system to maintain efficiency?
Installing outlets far from changes in direction.
Too many changes in direction without an outlet.
Using straight runs.
Reducing the fall ratio.
What is recommended for achieving maximum flow rate in a gutter system?
Installing outlets close to changes in direction.
Using curved runs.
Using straight runs.
Increasing the fall ratio.
What should be done if many changes in direction are unavoidable in a gutter system?
Increase the fall ratio.
Reduce the fall ratio.
Install more outlets.
Use curved runs.
