Please answer 11.25 (Answer)4362kN 11.25 The section of a 4 X 4 group pile in a layered saturated clay is shown in Figure P11.25.The piles are square in cross section (356 mm X 356 mm). The center-to-centerspacing (d) of the piles is 1 m. Determine the allowable load-bearing capacity of thepile group. Use FS = 3. Table 9.10 Variation of a(Interpolated Values Based onTerzaghi, Peck and Mesri, 1996)P.< 0.11.000.20.920.30.82ClayC= 25 kN/m²5 m0.40.740.60.620.80.541.00.48ClayC, = 45 kN/m²6 m1.20.421.40.401.60.381.80.366 mClayc, = 60 kN/m?2.00.352.40.342.80.341 mNote: p. = atmospheric pressure- 100 kN/m² or 2000 lb/f²Figure P11.25

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11.25 The section of a 4 X 4 group pile in a layered saturated clay is shown in Figure P11.25. The piles are square in cross section (356 mm X 356 mm). The center-to-center spacing (d) of the piles is 1 m. Determine the allowable load-bearing capacity of the pile group. Use FS = 3.

11.25 The section of a 4 X 4 group pile in a layered saturated clay is shown in Figure P11.25. The piles are square in cross section (356 mm X 356 mm). The center-to-center spacing (d) of the piles is 1 m. Determine the allowable load-bearing capacity of the pile group. Use FS = 3.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter12: Pile Foundations

Section: Chapter Questions

Problem 12.2P: A 20 m long concrete pile is shown in Figure P12.2. Estimate the ultimate point load Qp by a....

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Question

Please answer 11.25

(Answer)

4362kN

11.25 The section of a 4 X 4 group pile in a layered saturated clay is shown in Figure P11.25.
The piles are square in cross section (356 mm X 356 mm). The center-to-center
spacing (d) of the piles is 1 m. Determine the allowable load-bearing capacity of the
pile group. Use FS = 3.

Table 9.10 Variation of a
(Interpolated Values Based on
Terzaghi, Peck and Mesri, 1996)
P.
< 0.1
1.00
0.2
0.92
0.3
0.82
Clay
C= 25 kN/m²
5 m
0.4
0.74
0.6
0.62
0.8
0.54
1.0
0.48
Clay
C, = 45 kN/m²
6 m
1.2
0.42
1.4
0.40
1.6
0.38
1.8
0.36
6 m
Clay
c, = 60 kN/m?
2.0
0.35
2.4
0.34
2.8
0.34
1 m
Note: p. = atmospheric pressure
- 100 kN/m² or 2000 lb/f²
Figure P11.25

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