- 2075 Chaitra · 4×3 marks
Building: excavation, brick 1:4, wood work
Short answer
For assumed room 4.0×3.6 m: earthwork excavation 14.51 m³, first class brickwork in 1:4 mortar in foundation and plinth 6.30 m³, and woodwork for frames 0.141 m³.
Prepare detailed estimate of the following items of work for a building from the attached Fig. 1. i) Earthwork in excavation in foundation ii) First class brick work in (1:4) cement mortar in foundation and plinth. iii) Wood work in door and window frame. [Fig. 1 not included in the scanned paper]
Fig. 1 is not available, so the method is worked on an assumed room 4.0 m × 3.6 m clear with 230 mm walls. Centre-line length = 2(4.0 + 3.6 + 2 × 0.23) = 16.12 m.
Assumed data
- Trench 0.90 m × 1.00 m; PCC 1:3:6 200 mm; first class brick footings 0.69 m and 0.46 m wide (150 mm each); 230 mm wall to plinth (0.45 m above GL), wall height from the last step = 0.95 m.
- Door D 1.0 × 2.1 (1 no.); windows W1 1.2 × 1.2 (1 no.), W2 1.0 × 1.2 (2 nos.); frames 100 × 75 mm.
i) Earthwork in excavation in foundation
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Trench, all walls (centre-line) | 1 | 16.120 | 0.900 | 1.000 | 14.508 |
| Total | 14.508 |
ii) First class brickwork (1:4) in foundation and plinth
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Brick footing step 1 (0.69 m wide) | 1 | 16.120 | 0.690 | 0.150 | 1.668 |
| Brick footing step 2 (0.46 m wide) | 1 | 16.120 | 0.460 | 0.150 | 1.112 |
| Wall up to plinth | 1 | 16.120 | 0.230 | 0.950 | 3.522 |
| Total | 6.303 |
iii) Wood work in door and window frames
| Frame | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Door frame D (2×2.1 + 1.0) | 1 | 5.200 | 0.100 | 0.075 | 0.0390 |
| Window frame W1 (2×1.2 + 2×1.2) | 1 | 4.800 | 0.100 | 0.075 | 0.0360 |
| Window frame W2 (2×1.2 + 2×1.0) | 2 | 4.400 | 0.100 | 0.075 | 0.0660 |
| Total | 0.1410 |
Answer: Excavation 14.51 m³; brickwork 6.30 m³; timber for frames 0.141 m³ (assumed dimensions).
✓ Answer checked by Claude Opus 5.5 (high effort)
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