Bearing Capacity Calculator
Calculate ultimate and allowable bearing capacity for foundations using Terzaghi's equation. Supports strip, square, circular, and rectangular footings with depth and shape factors.
Depth below ground surface to foundation base
Typical: 2.5-3.0
| Soil Type | c (kPa) | φ (°) | γ (kN/m³) |
|---|---|---|---|
| Loose Sand | 0 | 28 | 16 |
| Medium Dense Sand | 0 | 33 | 18 |
| Dense Sand | 0 | 38 | 20 |
| Soft Clay | 25 | 0 | 17 |
| Medium Clay | 50 | 0 | 18 |
| Stiff Clay | 100 | 0 | 19 |
Ultimate Capacity
1353
Allowable Capacity
451
Allowable Load
1805
Ultimate Bearing Capacity (qu)
1353 kPa
Allowable Bearing Capacity (qa)
451 kPa
Maximum Allowable Load
1805 kN
Based on foundation area of 4.00 m²
Formula Used: Terzaghi-Meyerhof
Effective overburden stress (q) = 27.0 kPa
Notes:
- Results based on Terzaghi-Meyerhof general bearing capacity theory
- Water table correction applied if specified
- Verify with site-specific geotechnical investigation
- Consider settlement criteria for final design
- Factor of Safety 3 applied to ultimate capacity
IMPORTANT DISCLAIMER
This calculator provides PRELIMINARY ESTIMATES ONLY and is intended for planning and budgeting purposes. Results should NOT be used for final structural design or construction without verification by a licensed Professional Engineer (PE) or Chartered Engineer (CEng).
By using this tool, you acknowledge that:
1. All calculations are indicative and may not account for site-specific conditions, load combinations, or local code requirements.