From: The bearing capacity factor N γ of strip footings on c–ϕ–γ soil using the method of characteristics
ϕ (°) | Present method | Bolton and Lau (1993) | Frydman and Burd (1997) | Woodward and Griffiths (1998) | Hjiaj et al. (2005) | Martin (2005) | Smith (2005) | Kumar (2009) | |||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
λ | |||||||||||||
0 | 0.1 | 1 | 10 | 100 | 104 | ||||||||
5 | 0.085 | 0.144 | 0.210 | 0.242 | 0.246 | 0.248 | 0.09 | – | – | 0.0862–0.0914 | – | – | 0.087 |
10 | 0.281 | 0.438 | 0.619 | 0.707 | 0.721 | 0.723 | 0.29 | – | 0.3 | 0.283–0.299 | 0.2809 | – | 0.282 |
15 | 0.699 | 1.023 | 1.411 | 1.605 | 1.637 | 1.641 | 0.71 | – | 0.7 | 0.701–0.737 | – | 0.70 | 0.699 |
20 | 1.579 | 2.194 | 2.968 | 3.375 | 3.445 | 3.452 | 1.60 | – | 1.5 | 1.578–1.665 | 1.579 | 1.58 | 1.577 |
25 | 3.461 | 4.607 | 6.137 | 6.995 | 7.145 | 7.163 | 3.51 | – | 3.4 | 3.454–3.653 | – | 3.46 | 3.457 |
30 | 7.653 | 9.816 | 12.92 | 14.80 | 15.16 | 15.19 | 7.74 | 7.9 | 7.6 | 7.623–8.078 | 7.653 | 7.65 | 7.644 |
35 | 17.58 | 21.83 | 28.47 | 32.88 | 33.76 | 33.86 | 17.8 | 18.9 | – | 17.46–18.51 | – | 17.6 | 17.55 |
40 | 43.19 | 52.14 | 67.50 | 78.96 | 81.44 | 81.74 | 44 | 42 | – | 42.77–45.42 | 43.19 | 43.2 | 43.08 |
45 | 117.6 | 138.4 | 178.1 | 212.1 | 220.4 | 221.3 | 120 | 92 | – | 115.6–123.3 | – | 118 | 117.1 |
50 | 372.0 | 427.9 | 547.6 | 667.8 | 701.7 | 706.2 | 389 | – | – | – | 372.0 | 372 | 370.0 |