Table 7.
Statistical comparison of theoretical and load-test capacities for Project 5.
| Method | Soil type | Cum. skin friction (kN) | Skin friction, Qs (kN) | End bearing, Qb (kN) | Allowable capacity (kN) | Difference with load test (519.8 kN) | Bias factor, λ = Pred/Test | Statistical summary |
|---|---|---|---|---|---|---|---|---|
| SPT-based BNBC 2020 | Silt | 47.736 | 109.026 | 1193.8 | 436.0 | – 16.12% | 0.84 |
MAPE = 22.00%, Mean bias, λ̄ = 0.78 & COV = 0.05 |
| Sand | 61.29 | |||||||
| SPT-based Other | Silt | 56.16 | 117.45 | 1054.1 | 395.0 | – 24% | 0.76 | |
| Sand | 61.29 | |||||||
| BCE BNBC 2020 | Silt | 140.4 | 165.65 | 928.38 | 385.3 | – 25.88% | 0.74 | |
| Sand | 25.25 |