| Check |
Value |
Requirement |
Status |
| Overturning Safety Factor |
2.45 |
≥ 2.0 (IRC 78) |
PASS |
| Sliding Safety Factor (without key) |
1.35 |
≥ 1.5 (IRC 78) |
FAIL |
| Sliding Safety Factor (with key) |
1.85 |
≥ 1.5 (IRC 78) |
PASS |
| Bearing Pressure (max) |
235 kN/m² |
≤ 250 kN/m² |
PASS |
| Bearing Pressure (min) |
85 kN/m² |
≥ 0 (no tension) |
PASS |
| Eccentricity |
0.48 m |
≤ B/6 = 0.67 m |
PASS |
| Element |
Location |
Reinforcement |
Spacing |
Steel Area |
% of Steel |
| Stem |
Vertical (Front) |
16 mm Φ |
150 mm c/c |
1340 mm²/m |
0.26% |
| Horizontal (Distribution) |
10 mm Φ |
200 mm c/c |
393 mm²/m |
0.08% |
| Base Slab |
Heel (Top) |
20 mm Φ |
150 mm c/c |
2094 mm²/m |
0.35% |
| Toe (Bottom) |
16 mm Φ |
150 mm c/c |
1340 mm²/m |
0.22% |
| Shear Key |
Vertical |
16 mm Φ |
150 mm c/c |
1340 mm²/m |
0.27% |
| Element |
Max Moment |
Moment Capacity |
Max Shear |
Shear Capacity |
Status |
| Stem |
215 kNm/m |
235 kNm/m |
125 kN/m |
185 kN/m |
SAFE |
| Heel |
185 kNm/m |
205 kNm/m |
110 kN/m |
165 kN/m |
SAFE |
| Toe |
95 kNm/m |
125 kNm/m |
75 kN/m |
115 kN/m |
SAFE |
| Shear Key |
35 kNm/m |
65 kNm/m |
85 kN/m |
105 kN/m |
SAFE |
Design Summary
- Wall Height: 6.0 m
- Base Width: 4.0 m
- Stem Thickness: 0.3m (top) to 0.6m (base)
- Concrete Grade: M25
- Steel Grade: Fe 415
- Shear Key: Included (0.5m × 0.5m)
- Backfill: φ = 30°, γ = 18 kN/m³
- Surcharge: 20 kN/m²
Key Results
- Overturning SF: 2.45 > 2.0 ✓
- Sliding SF: 1.85 > 1.5 ✓
- Bearing Pressure: 235 < 250 kN/m² ✓
- Max Steel: 0.35% (Heel)
- Concrete Volume: 12.8 m³/m
- Steel Weight: 325 kg/m
Design Status: All requirements satisfied as per IRC 112:2020 and IS 456:2000