Answered: The pile group shown consists of 12…

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 pile group shown consists of 12 friction piles each 0.3 m diameter. Each pile is driven clay layer with different unconfined compressive strength. Unit weight of the clayey soil is 18.18 KN/m^3. Bearing capacity factor Nc = 9. Factor of safety is 3.0.
1. Compute the allowable load of the pile group considering that the piles act individually.
a. 2650 kN
b. 2370 kN
c. 2460 kN
d. 3360 kN
2. Compute the allowable load of the pile group based on block failure.
a. 2650 kN
b. 2370 kN
c. 2460 kN
d. 3360 kN
3. Compute the maximum center- to- center spacing of piles to achieve 100% efficiency. *
a. 627 mm
b. 860 mm
c. 800 mm
d. 560 mm

Cui =58kPa
L1= 4m
a1 = 1.0
L2= 5m
Cu2 =76kPa
a2 =0.5
Cuz =95 kPa
L3= 3m
C3 = 0.5
0,6m
0.6m
0.6m
0.6
0.6m

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