Prepare an approximate estimate for (G+4) R.C.C. building. Bldg consists of 4 flats on each floor & each flat has carpet area of 100 m² Assume area occupied by walls & columns etc. as 10% of built up area & area of circulation as 20% of built up area. Assume cost of construction as Rs. 12000/m².

Carpet area = $\text{Carpet area/flat} = 100m² \\ \text{Carpet area/floor} = 100*5 \\ = 500m²$

Total carpet area $= 500*5 \\ = 2500 m²$

Total built up area $= \text{C.A. + wall area + circulation area} \\ = 2500 + \dfrac{10}{100}* 2500 + \dfrac{20}{100} * 2500$

Built up area = …