Table 9.10 Variation of a (Interpolated Values Based on Terzaghi, Peck and Mesri, 1996) Cu Pa < 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 Note: Pa = atmospheric pressure = 100 kN/m? or 2000 lb/ft? Figure P9.27 7 The plan of a group pile is shown in Figure P9.27. Assume that the piles are embedded in a saturated homogeneous clay having a c, = 90 kN/m². Given: diameter of piles (D) = 316 mm, center-to-center spacing of piles = 600 mm, and length of piles = 20 m. Find the allowable load-carrying capacity of the pile group. Use Table 9.10 and FS = 3.
Table 9.10 Variation of a (Interpolated Values Based on Terzaghi, Peck and Mesri, 1996) Cu Pa < 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 Note: Pa = atmospheric pressure = 100 kN/m? or 2000 lb/ft? Figure P9.27 7 The plan of a group pile is shown in Figure P9.27. Assume that the piles are embedded in a saturated homogeneous clay having a c, = 90 kN/m². Given: diameter of piles (D) = 316 mm, center-to-center spacing of piles = 600 mm, and length of piles = 20 m. Find the allowable load-carrying capacity of the pile group. Use Table 9.10 and FS = 3.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Redo Problem 9.27 with the following: center-to-center spacing of piles 5 30 in., length of piles = 45 ft, D = 12 in., cu = 860 lb/ft2, and FS = 3. Use Table 9.10.
Transcribed Image Text:Table 9.10 Variation of a
(Interpolated Values Based on
Terzaghi, Peck and Mesri, 1996)
Cu
Pa
< 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
Note: Pa = atmospheric pressure
= 100 kN/m? or 2000 lb/ft?
Transcribed Image Text:Figure P9.27
7 The plan of a group pile is shown in Figure P9.27. Assume that the piles are
embedded in a saturated homogeneous clay having a c, = 90 kN/m². Given:
diameter of piles (D) = 316 mm, center-to-center spacing of piles = 600 mm, and
length of piles = 20 m. Find the allowable load-carrying capacity of the pile group.
Use Table 9.10 and FS = 3.
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