6035 - Drainage Outcome 4 part 2

What are the two important factors to consider with the roof area in rainwater systems?

• The color of the roof and the material of the roof

• 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

Which of the following is NOT a factor to consider with the roof area in rainwater systems?

• The actual size of the roof area

• The angle of the roof area

• The color of the roof

• The slope of the roof

Which two factors will affect the amount of rainwater collected and the velocity at which the water enters the guttering?

• Roof area and wind speed

• Roof area and slope

• Roof area and rainfall intensity

• Roof area and temperature

What is the primary function of a running outlet in a rainwater system?

• To connect the gutter and the downpipe

• To store rainwater

• To filter rainwater

• To heat rainwater

How is a running outlet designed to cope with water flow?

• With water flowing from one direction

• With water flowing from two directions

• By storing excess water

• By evaporating excess water

What determines the position of the running outlet in a rainwater system?

• The size of the property

• The location of the drains of the property

• The amount of rainfall

• The type of gutter used

What is the effect of having more outlets on a rainwater system?

• Rainwater travels a longer distance in the gutter

• Rainwater travels a shorter distance in the gutter

• The system becomes less efficient

• The system becomes more expensive

What should you always check to find out the flow capacity of a running outlet design?

• The roof area

• The manufacturer's data sheet

• The expected flow rate

• The technical literature

How can you determine the number of outlets a roof line may require?

• By checking the roof area

• By dividing the expected flow rate of the roof area by the flow rate for the outlet

• By consulting the manufacturer's data sheet

• By estimating the roof size

According to BS EN 12056, what is the recommended fall for gutters per metre length?

• 0-1mm

• 1-3mm

• 3-5mm

• 5-7mm