Plinth area, carpet area, and floor area — identify the incorrect statement Read each definition and select the incorrect statement about plinth area, carpet area, and floor area in building estimation.

Introduction / Context:Clear terminology is crucial in estimation and valuation because quantities, costs, and compliance rules depend on how areas are defined. Plinth area, carpet area, and floor area are distinct and often confused terms.

Given Data / Assumptions:

• Standard estimation terminology as taught in civil engineering.
• Plinth area is measured at floor level and includes the thickness of walls.
• Carpet area is the net usable area inside rooms, excluding walls and most service shafts.
• Floor area (or built-up area usable) is defined systematically, not by “carpet area plus kitchens/baths” wording that implies kitchens/baths are not part of carpet area, which is misleading.

Concept / Approach:Correct definitions:

• Plinth area: Built-up covered area measured at floor level, generally including internal and external wall thicknesses.
• Carpet area: Usable area within the internal faces of walls; typically includes kitchens and other rooms but excludes wall thicknesses, verandahs (unless enclosed as rooms), balconies, etc.
• Floor area: A prescribed measure used by authorities; commonly related to built-up/covered area minus certain deductions; definitions vary by code, but it is not defined as “carpet area plus kitchens and baths”.

Step-by-Step Solution:

Verification / Alternative check:Compare with standard handbooks where carpet area already includes kitchen and most habitable/utility rooms (minus wall thickness and typical exclusions); thus (c) misleads by double-counting or misclassifying areas.

Why Other Options Are Wrong:

• Option (a): Correct definition of plinth area.
• Option (b): Acceptable definition of carpet area.
• Option (d) or (e): Broad choices that do not align with the targeted incorrect statement.

Common Pitfalls:Mixing local by-law definitions with general estimation terms; treating verandahs/balconies inconsistently; forgetting that code-specific definitions may vary but the logic of (c) remains flawed.

Final Answer:The carpet area of a building along with area of its kitchen, pantry, store, lavatory, bath room and glazed verandah, is called floor area