Unit 204 mock test

Which one of the following types of drawing indicates the bonding arrangement for a solid brick wall?

• General location Drawing

• Sectional drawing

• Orthographic projection

• Isometric projection

Answer explanation

Orthographic projection is the correct choice as it provides a detailed representation of the bonding arrangement in a solid brick wall, showing the layout and dimensions accurately in multiple views.

What scale should be used to draw the bonding arrangement for a solid brick wall in orthographic projection?

• 1:200

• 1:50

• 1:20

• 1:5

Answer explanation

The scale 1:20 is appropriate for detailed drawings like a solid brick wall in orthographic projection, allowing for clear representation of the bonding arrangement. Larger scales like 1:5 may be too detailed, while smaller scales may lack clarity.

What action should be taken if the dimensions (measurements) on a working drawing are unclear?

• Report it to your surveyor

• Report it to your supervisor

• Report to the health & safety officer

• Report to the building inspector

Answer explanation

If the dimensions on a working drawing are unclear, the best action is to report it to your supervisor. They can provide clarification or guidance to ensure the project proceeds correctly.

What tool would you use to remove existing joints?

• Cold chisel

• Plugging chisel

• Bolster chisel

• Comb chisel

Answer explanation

A plugging chisel is specifically designed to remove existing joints by cutting through the material. It has a narrow blade that allows for precise work, making it the correct choice for this task.

What tool prevents the line sagging?

• Wall plate

• Line pin

• Corner block

• Tingle plate

Answer explanation

A tingle plate is used to prevent line sagging by providing additional support and maintaining tension in the line, ensuring it remains straight and properly aligned.

What would you use to check the face plane of brickwork?

• Tape measure

• Storey rod

• Straight edge

• Tingle plate

Answer explanation

A straight edge is used to check the face plane of brickwork as it provides a long, flat reference to identify any deviations in alignment. Other tools like tape measures and storey rods serve different purposes.

What material would provide a DPC for a garden wall?

• Concrete bricks

• Lightweight blocks

• Dense concrete blocks

• Engineering bricks

Answer explanation

Engineering bricks are dense and have low water absorption, making them ideal for damp-proof courses (DPC) in garden walls. Other options like concrete bricks and lightweight blocks do not provide the same level of moisture resistance.

In a mortar mix of 1:4, what does the 4 represent?

• Cement

• Lime

• Aggregate

• Sand

Answer explanation

In a mortar mix of 1:4, the '4' represents the proportion of sand. This means for every part of cement, there are four parts of sand, which is essential for achieving the right consistency and strength in the mix.

How would you calculate the number of bricks needed for a one brick thick wall?

• Area x120

• Area / 120

• Volume x 120

• Volume /120

Answer explanation

To calculate the number of bricks for a one brick thick wall, you multiply the area of the wall by the number of bricks per square meter (120). Thus, the correct formula is Area x 120.

Why is it important to check the datum height of brickwork at corner positions?

• To ensure that the wall works bricks

• To ensure level and length

• To ensure level and height

• To ensure that the foundation is square

Answer explanation

Checking the datum height at corners ensures that the wall is both level and of the correct length. This is crucial for maintaining structural integrity and alignment throughout the brickwork.