The plan of a group pile is shown in the figure. Assume that the piles are embedded in a saturated homogeneous clay having a cu=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. Using FS=3 and table.

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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The plan of a group pile is shown in the figure. Assume that the piles are
embedded in a saturated homogeneous clay having a cu=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. Using FS=3 and table.

Table 11.10 Variation of a (interpo-
lated values based on Terzaghi, Peck
and Mesri, 1996)
C.
P.
<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: P. = atmospheric pressure
100 kN/m?
Transcribed Image Text:Table 11.10 Variation of a (interpo- lated values based on Terzaghi, Peck and Mesri, 1996) C. P. <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: P. = atmospheric pressure 100 kN/m?
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