Rainwater systems

What are the following gutter profiles depicted called?

• Ogee

• Square Line

• Box Line

• Half Round

Answer explanation

The gutter profiles are called Ogee, Square Line, and Half Round. Ogee has a decorative curve, Square Line offers a modern look, and Half Round is semi-circular for efficient water flow, commonly used in traditional homes.

List the five areas where rainwater can be discharged to.

• Surface Water Drain and Combined Sewer

• In to the bath waste system

• A water Course and Soak away

• A Rainwater Harvesting System

• Internally to the home via the vent stack

Answer explanation

Rainwater can be discharged into Surface Water Drains, Combined Sewers, Water Courses, Soak Aways, and Rainwater Harvesting Systems. The other options do not represent appropriate discharge areas.

Which source of information states the statutory requirements for a rainwater system?

• Building regulations Part H3

• Building regulations part F3

• Water regulations (water fittings) 1999

• BS EN 12056Part 3

Answer explanation

Building regulations Part H3 outlines the statutory requirements for rainwater systems, making it the correct source of information compared to the other options listed.

Which source of information offers guidance about the installation of a rainwater system?

• BS EN 12056 Part 2

• CPD 7 2016

• BS EN 12056 Part 3

• BS EN12056:3-2000

Answer explanation

BS EN 12056 Part 3 provides specific guidance on the design and installation of rainwater systems, making it the correct choice for this question.

What is rainfall intensity measured in?

• Litres/second/meter²

• Litres/minute/meter³

• Gallons/hours/foot²

• Pints/minute/foot³

Answer explanation

Rainfall intensity is measured in Litres/second/meter², indicating the volume of rain falling per second on a square meter. This makes it the correct choice among the options provided.

why is the roof area is an important consideration when designing a rainwater system.

• The steeper the the roof pitch the better

• The less the roof are the more rainwater collected

• Flat roofs are better than a pitched roof

• The greater the roof area the more rainwater collected

Answer explanation

The greater the roof area, the more rainwater can be collected. A larger surface allows for more runoff during rainfall, making it crucial for effective rainwater harvesting systems.

What is the ratio of fall that BS EN 12056 Part 3 states should be in place for a gutter system to work correctly?

• 1:800

• 1:700

• 1:600

• 1:500

Answer explanation

According to BS EN 12056 Part 3, the correct ratio of fall for a gutter system is 1:600. This ratio is essential for ensuring proper drainage and preventing water accumulation in the gutter.

Which one of the following is a style of plastic guttering?

• Elsan

• Mansard

• Ogee

• Half channel

Answer explanation

Ogee is the correct choice as it refers to a style of plastic guttering with an S-shaped profile, making it both functional and visually appealing, commonly used in residential buildings.

Which one of the factors listed needs to be considered before the installation of a rainfall system?

• The height and shape of the building

• The type of roof covering that the property has

• The roof area and direction of fall

• What type of drainage system the building is connected to

Answer explanation

The roof area and direction of fall are crucial for determining how effectively the rainfall system will manage water runoff, ensuring proper drainage and preventing potential water damage.

How can you check a gutter and downpipe for soundness and performance?

• Wait until it rains, then climb up to look

• Pour water into the gutter and inspect the system for ponding and leaks

  Explanation: This method allows you to actively test the gutter and downpipe system for any issues by simulating rain conditions, making it easier to spot leaks or areas where water may not be draining properly.

• Ask the customer to let you know if they see any leaks

• Join the system together before installation and inspect for leaks

Answer explanation

Pouring water into the gutter allows for a direct test of the system's performance, helping to identify leaks and areas of poor drainage, simulating actual rain conditions effectively.