- 2073 Shrawan · 10 marks
Building: lime concrete, second footing, shutters, DPC
Short answer
Lime concrete in foundation: 4.30 m3. Brickwork in second footing: 1.10 m3. Two door shutters total: 3.24 m2. DPC 25 mm thick, net wall length after door deduction: 3.22 m2.
Estimate the quantities of the following items of work from the accompanying BUILDING drawings. i) Lime concrete in foundation ii) Brick work in second footing iii) DOOR shutters iv) 25 mm thick DPC [Drawing not included in the scanned paper]
No drawing is given, so a typical room is assumed: 4.5 m × 3.0 m clear, 230 mm walls; centre-line length = 2(4.5 + 3.0 + 0.46) = 15.92 m. Foundation: trench 0.90 m wide; lime concrete 0.30 m thick; brick footings of 0.69 m (first) and 0.46 m (second), 0.15 m high each; DPC at plinth. Doors: D1 1.0 × 2.1 m, D2 0.9 × 2.1 m; two windows 1.2 × 1.2 m. Door frame 75 mm.
i) Lime concrete in foundation
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Lime concrete bed 0.90 wide × 0.30 thick | 1 | 15.920 | 0.900 | 0.300 | 4.298 |
| Total | 4.298 |
ii) Brickwork in second footing
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Second footing 0.46 × 0.15 | 1 | 15.920 | 0.460 | 0.150 | 1.098 |
| Total | 1.098 |
iii) Door shutters
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m²) |
|---|---|---|---|---|---|
| Door D1 shutter (1.0−0.15)×(2.1−0.075) | 1 | 0.850 | 2.025 | – | 1.721 |
| Door D2 shutter (0.9−0.15)×(2.1−0.075) | 1 | 0.750 | 2.025 | – | 1.519 |
| Total | 3.240 |
iv) 25 mm thick DPC
Measured in m² (length of wall × thickness of wall), not across door openings.
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m²) |
|---|---|---|---|---|---|
| DPC 25 mm, wall length | 1 | 15.920 | 0.230 | – | 3.662 |
| Deduct door openings (1.0 + 0.9) | -1 | 1.900 | 0.230 | – | -0.437 |
| Total | 3.225 |
Answer: Lime concrete 4.30 m³; second-footing brickwork 1.10 m³; door shutters 3.24 m²; DPC 3.22 m² (assumed dimensions).
✓ Answer checked by Claude Opus 5.5 (high effort)
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