The section of a 4 × 4 group pile in a layered saturated clay is shown in Figure 1. The piles are square in cross-section (356 mm × 356 mm). The center-to-center spacing (d) of the piles is 1 m. Determine the allowable loadbearing capacity of the pile group. Use FS = 3 and Table 1.
Figure 1
Table 1
|
|
α |
|
≤ 0.1 |
1.00 |
|
0.2 |
0.92 |
|
0.3 |
0.82 |
|
0.4 |
0.74 |
|
0.6 |
0.62 |
|
0.8 |
0.54 |
|
1.0 |
0.48 |
|
1.2 |
0.42 |
|
1.4 |
0.40 |
|
1.6 |
0.38 |
|
1.8 |
0.36 |
|
2.0 |
0.35 |
|
2.4 |
0.34 |
|
2.8 |
0.34 |
