Q14Basic Civil Engineering

To accurately calculate the different types of areas for a building, we must distinguish between the overall external footprint and the internal usable spaces, factoring in the thickness of the walls which occupy a significant portion of the constructed area. The given plan has overall external dimensions of $7.6\text{ m}\times 6.2\text{ m}$, and a uniform wall thickness of $30\text{ cm}$ ($0.3\text{ m}$).

1. Plinth Area: The Plinth Area is defined as the total built-up covered area measured at the external boundaries of the floor level. It includes the area occupied by all walls. $PlinthArea=OverallLength\times OverallWidth$ $PlinthArea=7.6\text{ m}\times 6.2\text{ m}=47.12{\text{ m}}^2$

2. Floor Area: The Floor Area represents the total internal area of the building, which is calculated by subtracting the area occupied by the walls from the Plinth Area. First, calculate the total length of the walls to find their area, or alternatively, calculate the sum of all internal room dimensions. Internal dimensions provided: - Room 1: $3.5\text{ m}\times 3.0\text{ m}=10.5{\text{ m}}^2$ - Room 2: $3.0\text{ m}\times 3.0\text{ m}=9.0{\text{ m}}^2$ - W/C & Bath: $3.5\text{ m}\times 2.0\text{ m}=7.0{\text{ m}}^2$ - Verandah: $3.0\text{ m}\times 2.0\text{ m}=6.0{\text{ m}}^2$ Sum of internal clear areas = $10.5+9.0+7.0+6.0=32.5{\text{ m}}^2$. (Note: The floor area calculation often includes areas like corridors and verandahs. The sum of clear internal room areas is $32.5{\text{ m}}^2$, which represents the total floor area assuming these are all the usable spaces).

3. Carpet Area: The Carpet Area is the strictly usable liveable space, excluding areas like bathrooms, W/C, and verandahs. $CarpetArea=AreaofRoom1+AreaofRoom2$ $CarpetArea=10.5{\text{ m}}^2+9.0{\text{ m}}^2=19.5{\text{ m}}^2$