Methods of Estimation MCQ with answer and solution

Concept

Plinth Area Estimate

Formula

Plinth Area Estimate = Plinth Area × Plinth Area Rate

Step-by-step solution

1. Review the given statements regarding the Plinth Area Estimate concept. 2. Recall that Plinth Area is based on external floor-level dimensions (excluding courtyards/open spaces) and rates are derived from similar local buildings. 3. Determine that statements 1 and 3 are correct while statement 2 is incorrect, and select Option (c) as the correct choice.

Explanation

Statements 1 and 3 are correct, while statement 2 is incorrect. Statement 1 is correct because the plinth area estimate is calculated using the external dimensions of the building measured at floor level. Statement 3 is correct because the plinth area rate is calculated by dividing the total cost of a similar recently constructed building in the area by its plinth area. Statement 2 is incorrect because open spaces, courtyards, and open balconies are explicitly excluded when calculating the plinth area.

Shortcut

To easily remember rules for Plinth Area Estimate, use the mnemonic "EXTERNAL & EXCLUDE": - External Dimensions: Plinth area is always measured using external walls at floor level. - Exclude Open Spaces: Courtyards, open balconies, and open areas are strictly EXCLUDED from the plinth area. - Local Rates: Plinth area rate is always derived from recent similar local building costs.

Common mistake

A common mistake is selecting Option D (or Options A and B) by incorrectly assuming that courtyards and open spaces are included in the plinth area calculation. Students often confuse plinth area with total site area or plot area; in standard estimation, open areas, courtyards, and unenclosed spaces are explicitly excluded from the plinth area.