Drainage | Quiz

What are the most important factors to be considered when sizing and selecting a guttering system?

• Drainage connection, rainfall direction, durability

• Rainfall intensity, roof area, gutter fall

• Material type, height, drainage system type

• Environmental factors, weight, labour availability

On completion of the installation of a rainwater gutter system, how would you check that the system does not leak?

• Return on a day when it is raining to visually check

• Carry out a visual inspection

• Discharge water on the roof with a hosepipe

• Use a manometer and weir cup

What type of gutter profile is shown in the image below?

• Half round

• Deep flow

• Ogee

• Square

Which is the most suitable gradient of fall for a standard gutter installation?

• 2mm/m

• 8mm/m

• 10mm/m

• 60mm/m

A south-facing gutter 20 m long is subjected to a 30°C temperature rise. What is the expansion of the gutter when the coefficient of linear expansion of the gutter is 0.06 mm/m/°C

• 12mm

• 18mm

• 36mm

• 42mm

Which part of the Building Regulations specifically covers rainwater systems?

• Document G

• Document H

• Document J

• Document P

What is the recommended clipping distance for PVCu gutters to fascia boards?

• 650mm

• 750mm

• 800mm

• 1000mm

What is the component marked 'X' in the image below?

• Rainwater shoe

• Expansion joint

• Gulley

• Hopper

Which of the following is not a common material used in the manufacture of rainwater systems?

• PVCu

• MDPE

• Copper

• Extruded aluminium

Which of the following British Standards gives specific information on the intensity of rainfall in the UK?

• BS EN 12056

• BS EN 806

• BS En 1057

• BS 6565