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