Construction Knowledge and Tools Quiz

What is the primary purpose of a building foundation?

• To support the weight of the building

• To improve the building's appearance

• To reduce the cost of construction

• To create extra storage space

Answer explanation

The primary purpose of a building foundation is to support the weight of the building, ensuring stability and safety. Other options, like improving appearance or reducing costs, are secondary and not the main function.

What is a cavity wall?

• A single layer of bricks laid in a stretcher bond

• Two walls separated by an air gap for insulation

• A wall reinforced with steel rods

• A wall used only for decorative purposes

Answer explanation

A cavity wall consists of two walls with an air gap in between, which provides insulation. This design helps to reduce heat loss and improve energy efficiency, making it the correct choice compared to the other options.

What is a trowel used for in bricklaying?

• Mixing mortar

• To spread and shape mortar

• To cut bricks

• To measure angles

Answer explanation

A trowel is primarily used in bricklaying to spread and shape mortar, ensuring a smooth and even application between bricks. This is essential for creating strong bonds and a stable structure.

Fill in the blank: Damp-proofing is important to _______.

• Strengthen the building's walls

• Prevent moisture from entering the building

• Improve insulation

• Make the building fireproof

Answer explanation

Damp-proofing is crucial to prevent moisture from entering the building, which can lead to structural damage and mold growth. The other options do not accurately reflect the primary purpose of damp-proofing.

Fill in the blank: A _______ is NOT a type of brick.

• Engineering brick

• Concrete block

• Facing brick

• Common brick

Answer explanation

A concrete block is not a type of brick; it is a different building material made from concrete. In contrast, engineering brick, facing brick, and common brick are all types of bricks used in construction.

Which material is most commonly used as an aggregate in concrete?

• Sand

• Limestone

• Gravel

• Clay

Answer explanation

Sand and gravel are the most commonly used aggregates in concrete. Sand provides fine particles that fill gaps, while gravel offers larger particles for strength and stability.

What is the difference between lime mortar and cement mortar?

• Lime mortar is weaker but more flexible

• Cement mortar is lighter in colour

• Lime mortar sets faster

• Cement mortar is not water-resistant

Answer explanation

Lime mortar is indeed weaker but offers more flexibility, making it suitable for historic buildings. Cement mortar, while stronger, is lighter in color and less water-resistant, which can lead to issues in wet conditions.

What type of bond alternates headers and stretchers in each course?

• Stretcher bond

• English bond

• Flemish bond

• Running bond

Answer explanation

Flemish bond alternates headers and stretchers in each course, creating a distinctive pattern. In contrast, stretcher bond uses only stretchers, while English bond uses alternating courses of headers and stretchers.

Why is personal protective equipment (PPE) important in construction?

• To complete tasks more quickly

• To ensure compliance with legal requirements

• To protect workers from potential hazards

• To improve the appearance of workers

Answer explanation

Personal protective equipment (PPE) is crucial in construction to protect workers from potential hazards and to ensure compliance with legal requirements, safeguarding health and safety on the job site.

Which piece of PPE is most important when cutting bricks with a saw?

• Hard hat

• Safety goggles

• High-visibility vest

• Steel-toe boots

Answer explanation

Safety goggles are crucial when cutting bricks as they protect the eyes from flying debris and dust, which can cause serious injuries. Other PPE items are important, but eye protection is the top priority in this scenario.