Methods of Estimation MCQ with answer and solution

Concept

Standard units of measurement for surface dressing

Formula

NONE

Step-by-step solution

1. Review IS 1200 rules for measurement of earthwork and site preparation. 2. Surface dressing involves trimming and levelling natural ground not exceeding 30 cm depth. 3. Such shallow operations are billed per unit area of ground treated. 4. Therefore, the standard MKS unit of measurement is Square Meter (option A). Answer: A

Explanation

In estimating and costing (as per IS 1200 Part 1), surface dressing, clearing, and levelling where the average excavation depth does not exceed 30 cm is measured in units of area, specifically Square Meters (m²). Excavation exceeding 30 cm in depth is measured in Cubic Meters (m³).

Why the other options are wrong

B) Meter is a linear unit used for pipes, fences, or curbs. C) Cubic Meter is used for earthwork in excavation where depth exceeds 30 cm. D) Percentage Cubic Meter is not a recognized MKS unit of measurement.

Shortcut

Surface dressing / shallow levelling (depth ≤ 30 cm) = Square Meter (m²); deep excavation = m³.

Common mistake

Selecting Cubic Meter (m³) by confusing surface dressing with general bulk earthwork excavation.