Units of Measurement MCQ with answer and solution

Concept

Half-brick (partition) walls are measured in square metres, not cubic metres.

Step-by-step solution

1. Normal brickwork (one brick and thicker walls) is measured in cubic metres. 2. Reinforced brickwork and brickwork in arches are also measured in cubic metres. 3. A half-brick wall (about 10 cm thick) is thin, so it is measured by area. 4. So the half-brick wall is not measured in cubic metres. Answer is (C).

Explanation

As per standard modes of measurement, half-brick walls are measured in square metres, with thickness stated in the item. All thicker brickwork, including arches and reinforced brickwork, is measured in cubic metres.

Why the other options are wrong

A: Reinforced brickwork is measured in m³. B: Brickwork in arches is measured in m³. D: One brick and thicker walls are measured in m³.

Shortcut

Thin items like half-brick walls, plaster and flooring are measured in m². Thick masonry is measured in m³.

Common mistake

Thinking all brickwork is measured in m³, whatever the thickness.