- 2082 Baisakh · 7 marks
Preliminary estimate: residential, 500 m² carpet
Short answer
Plinth area = 609.76 m², volume = 2,012.20 m³. Civil cost = Rs 10,060,975.61. With 10% architecture, 6% water, 6% sanitary, 8% electrification, 5% contingency, 2.5% work-charged establishment: total Rs 14,060,213.41.
Prepare the preliminary estimate for the building project from the following data. Residential building of 4 stories having total carpet area of 500 m² and the wall is 8% of plinth area and that for circulation area occupied by passage, verandah, staircase, etc. is 10% of plinth area. The provision for architectural design is 10% of the civil cost, provision for water supply and sanitary are 6% of civil cost for each and for electrification is 8% of civil cost. The floor height of one flat of the building is 3 m and height of parapet wall on the top is 1.2 m. The rate of per cubic content is Rs. 5000 per m³. Assume suitable percentage contingencies and work charge establishment.
Assumptions
The total carpet area of 500 m² is for the whole four-storey building, and the plinth area is the same on each floor. Contingency is taken as 5% and work-charged establishment as 2.5% of the total building cost.
Plinth area and volume
Plinth area per floor = 609.76 / 4 = 152.44 m².
Height of the building = 4 x 3.0 + 1.2 (parapet) = 13.2 m.
Estimate
| Item | Basis | Amount (Rs) |
|---|---|---|
| Civil cost (volume x cube rate) | 2,012.20 m³ x 5,000 | 10,060,975.61 |
| Architectural design | 10% of civil cost | 1,006,097.56 |
| Water supply | 6% of civil cost | 603,658.54 |
| Sanitary work | 6% of civil cost | 603,658.54 |
| Electrification | 8% of civil cost | 804,878.05 |
| Total building cost | 13,079,268.29 | |
| Contingency (assumed) | 5% of 13,079,268 | 653,963.41 |
| Work-charged establishment (assumed) | 2.5% of 13,079,268 | 326,981.71 |
| Total estimated cost | 14,060,213.41 |
Answer: Volume = 2,012.20 m³; civil cost = Rs 10,060,975.61; total estimated cost = Rs 14,060,213.41.
✓ Answer checked by Claude Opus 5.5 (high effort)
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