Answered: The plan of a group pile is shown in…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

The plan of a group pile is shown in the figure. Assume that the piles are
embedded in a saturated homogeneous clay having a c_u=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?

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