Table 2.
Comparison of the bearing capacity factor N γ for a rough footing
| ϕ (°) | Present method | Meyerhof (1963) | Bolton and Lau (1993) | Kumbhojkar (1993) | Zhu et al. (2001) | Hjiaj et al. (2005) | Martin (2005) | Smith (2005) | Kumar (2009) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| λ | ||||||||||||||
| 0 | 0.1 | 1 | 10 | 100 | 104 | |||||||||
| 5 | 0.113 | 0.215 | 0.376 | 0.474 | 0.492 | 0.495 | 0.0697 | 0.62 | 0.144 | 0.107 | 0.115–0.120 | – | – | 0.114 |
| 10 | 0.433 | 0.700 | 1.122 | 1.387 | 1.441 | 1.446 | 0.367 | 1.71 | 0.559 | 0.453 | 0.434–0.455 | 0.4332 | – | 0.430 |
| 15 | 1.181 | 1.722 | 2.579 | 3.148 | 3.267 | 3.282 | 1.129 | 3.17 | 1.520 | 1.309 | 1.178–1.234 | – | 1.18 | 1.173 |
| 20 | 2.839 | 3.841 | 5.458 | 6.616 | 6.871 | 6.904 | 2.871 | 5.97 | 3.641 | 3.367 | 2.822–2.961 | 2.839 | 2.84 | 2.822 |
| 25 | 6.491 | 8.293 | 11.33 | 13.70 | 14.25 | 14.32 | 6.765 | 11.6 | 8.342 | 7.864 | 6.431–6.738 | – | 6.49 | 6.458 |
| 30 | 14.75 | 18.02 | 23.89 | 28.94 | 30.22 | 30.38 | 15.67 | 23.6 | 19.13 | 17.58 | 14.57–15.24 | 14.75 | 14.8 | 14.68 |
| 35 | 34.48 | 40.61 | 52.65 | 64.16 | 67.32 | 67.73 | 37.15 | 51.0 | 45.41 | 40.20 | 33.95–35.65 | – | 34.5 | 34.31 |
| 40 | 85.57 | 97.93 | 124.8 | 153.5 | 162.3 | 163.4 | 93.69 | 121.0 | 115.3 | 97.93 | 83.33–88.39 | 85.57 | 85.6 | 85.10 |
| 45 | 234.2 | 262.0 | 328.7 | 410.2 | 438.6 | 442.7 | 262.7 | 324.0 | 325.3 | 263.7 | 224.9–240.9 | – | 234 | 232.6 |
| 50 | 742.9 | 815.2 | 1008.5 | 1282.2 | 1394.5 | 1412.6 | 873.9 | 1052.0 | 1072.8 | 824.3 | – | 742.9 | 743 | 736.4 |