Geotechnical Engineering
Load Bearing Capacity Calculator
Calculate soil bearing capacity and allowable load for different foundation types.
Foundation Type
Soil Type
Footing Width
m
Width of the footing
Footing Length
m
Length of the footing (for strip/raft)
Depth of Foundation
m
Depth from ground level to footing base
Water Table Depth
m
Depth of water table from ground level
Capacity
0%
Total Load Capacity
0 kN
maximum allowable load
Bearing Capacity
0 kN/m²
Footing Area
0 m²
Soil Type
Rock
Foundation Type
Strip
📊 Capacity Breakdown
| Metric | Value | Details |
|---|
How the formula works
Ultimate Bearing Capacity = c × Nc + γ × D × Nq + 0.5 × γ × B × Nγ (Terzaghi's Equation)
- c = Soil cohesion (varies by soil type)
- γ = Soil unit weight (kN/m³)
- D = Foundation depth (m)
- B = Footing width (m)
- Nc, Nq, Nγ = Bearing capacity factors (depends on friction angle)
- Allowable Capacity = Ultimate Capacity ÷ Factor of Safety (2.5-3.0)