- 2074 Asoj · 12 marks
Building with verandah: excavation, panelled shutter, brick
Short answer
Earthwork excavation for main walls, dwarf wall, and pillar pits: 16.73 m3. Panelled door shutter (1.10x2.10 m) after frame deduction: 1.92 m2. Brickwork in foundation and plinth: 9.75 m3.
Estimate the quantities of the following items of work from the accompanying Building drawings: a) Earthwork in excavation in foundation b) Panelled door shutter c) Brick work in foundation and plinth [Fig. 3: room 5 m × 4 m with 1.5 m wide verandah and 20 × 20 cm pillars; schedule: door D = 110 × 210 cm, window W = 90 × 150 cm, shelf S = 90 × 150 cm; part sectional elevation on ABCD and section XY: 7.5 L.C. over 10 R.C.C. slab, R.C.C. band lintel, D.P.C., 2.5 C.C. over 7.5 L.C., earth filling, heights 2.50, 2.80, 2.10, 3.60 m; steps tread 30, riser 15; foundation sections on main wall, dwarf wall and pillar with footing widths 45/70/80 cm. Dimensions in cm, details approximate.]
Reading of the figure
Room 5.0 × 4.0 m (clear), main walls 300 mm, with a 1.5 m verandah on the long side carried on three 20 × 20 cm pillars joined by a 200 mm dwarf wall. Assumed foundations (from the footing widths 45 / 70 / 80 cm marked): main wall PCC 0.80 m wide × 0.25 m, brick steps 0.70 m and 0.45 m wide (0.20 m high each), 300 mm wall; trench depth 0.90 m; dwarf wall trench 0.45 m × 0.75 m deep (PCC 0.20 m); pillar pit 0.70 × 0.70 × 0.90 m. Plinth 0.45 m above GL. Door D 1.10 × 2.10 m (1 no.) is the only door shown.
Centre-line of main walls = 2[(5.0 + 0.3) + (4.0 + 0.3)] = 19.20 m; dwarf wall = 5.3 − 3 × 0.20 = 4.70 m.
a) Earthwork in excavation in foundation
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Main walls trench 0.80 wide | 1 | 19.200 | 0.800 | 0.900 | 13.824 |
| Dwarf wall trench 0.45 wide × 0.75 deep | 1 | 4.700 | 0.450 | 0.750 | 1.586 |
| Pillar pits 0.70 × 0.70 × 0.90 (3 nos.) | 3 | 0.700 | 0.700 | 0.900 | 1.323 |
| Total | 16.733 |
b) Panelled door shutter
Frame assumed 75 mm.
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m²) |
|---|---|---|---|---|---|
| Door shutter D (1.10−0.15) × (2.10−0.075), 1 no. | 1 | 0.950 | 2.025 | – | 1.924 |
| Total | 1.924 |
c) Brickwork in foundation and plinth
Main wall height above step 2 = 0.90 − 0.25 − 0.20 − 0.20 + 0.45 = 0.70 m.
| Item | No. | L (m) | B (m) | H/D (m) | Qty (m³) |
|---|---|---|---|---|---|
| Main wall step 1: 0.70 × 0.20 | 1 | 19.200 | 0.700 | 0.200 | 2.688 |
| Main wall step 2: 0.45 × 0.20 | 1 | 19.200 | 0.450 | 0.200 | 1.728 |
| Main wall 0.30 × 0.70 to plinth | 1 | 19.200 | 0.300 | 0.700 | 4.032 |
| Dwarf wall 0.20 thick: (0.75 − 0.20 + 0.45 = 1.00) high | 1 | 4.700 | 0.200 | 1.000 | 0.940 |
| Pillar footing step 0.60 × 0.60 × 0.20 | 3 | 0.600 | 0.600 | 0.200 | 0.216 |
| Pillar base 0.23 × 0.23 × 0.90 to plinth | 3 | 0.230 | 0.230 | 0.900 | 0.143 |
| Total | 9.747 |
Answer: Excavation 16.73 m³; door shutter 1.92 m²; brickwork in foundation and plinth 9.75 m³ (assumed details).
✓ Answer checked by Claude Opus 5.5 (high effort)
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