- 2079 Bhadra · 6 marks
Preliminary estimate: office, 2000 m², Rs 20000
Short answer
Plinth area = 3,333.33 m². Civil cost Rs66,666,666.67. Adding 1% interior design,5% extra services, assumed 5% contingency,3% supervision gives total Rs76,320,000.
Prepare a preliminary estimate of a building having a total carpet area of 2000 m² for obtaining the administrative approval of the ministry. Given the following data:
- 30% built up area will be taken up by circulation space
- 10% built up area is occupied by walls
- Plinth area rate is Rs 20000.00 /sqm
- Interior design will take 1% of the building cost
- Other extra services will cost 5% of the building cost
- Take supervision charge as 3%
Plinth area
Estimate
No contingency is given; 5% is assumed (usual practice). Supervision is 3% as given.
| Item | Basis | Amount (Rs) |
|---|---|---|
| Building cost (plinth area x rate) | 3,333.33 m² x 20,000 | 66,666,666.67 |
| Interior design | 1% of civil cost | 666,666.67 |
| Other extra services | 5% of civil cost | 3,333,333.33 |
| Total building cost | 70,666,666.67 | |
| Contingency (assumed) | 5% of 70,666,667 | 3,533,333.33 |
| Supervision charge | 3% of 70,666,667 | 2,120,000.00 |
| Total estimated cost | 76,320,000.00 |
Answer: Plinth area = 3,333.33 m²; total estimated cost = Rs 76,320,000.00.
✓ Answer checked by Claude Opus 5.5 (high effort)
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