A 20 m long bored concrete pile having a diameter of 375 mm is load tested, and the data are given below: Load (KN) 0 Settlement 0 (mm) 500 1000 15.0 1000 750 8.2 250 36.1 | 35.5 250 1250 39.6 750 38.2 500 37.5 2.0 5.0 39.5 Also given: Econcre= 25 X 10° MN/m?.
A 20 m long bored concrete pile having a diameter of 375 mm is load tested, and the data are given below: Load (KN) 0 Settlement 0 (mm) 500 1000 15.0 1000 750 8.2 250 36.1 | 35.5 250 1250 39.6 750 38.2 500 37.5 2.0 5.0 39.5 Also given: Econcre= 25 X 10° MN/m?.
Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN:9781305081550
Author:Braja M. Das
Publisher:Braja M. Das
Chapter9: Pile Foundations
Section: Chapter Questions
Problem 9.6P
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![NOTE: For any required additional data (i.e., tableifigure) please refer to the textbook (Das, B. M.
PRINCIPLES OF GEOTECHNICAL ENGINEERING 9TH ED.)
A 20 m long bored concrete pile having a diameter of 375 mm is load tested, and the data are
given below:
| 250
750 1000 1250 1000 750
5.0 8.2 15.0 39.6 39.5
Load (KN) 0
500
500
37.5
250
Settlement 0 2.0
36.1 35.5
38.2
|(mm)
Also given: Econcre= 25 X 10° MN/m?.
a. Estimate the allowable pile load using Davisson's (1973) method, with FS = 2.5.
b. At the maximum load of 1250 kN, what are the total and net settlements?
NOTE: Please write down all the caleulation steps! Show your work clearly!](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fedbfcc61-bdb0-4707-a87e-6d091a3b3abf%2F8cc3b3f1-72c8-4a16-bccf-1a595a632986%2Fcfu7u4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:NOTE: For any required additional data (i.e., tableifigure) please refer to the textbook (Das, B. M.
PRINCIPLES OF GEOTECHNICAL ENGINEERING 9TH ED.)
A 20 m long bored concrete pile having a diameter of 375 mm is load tested, and the data are
given below:
| 250
750 1000 1250 1000 750
5.0 8.2 15.0 39.6 39.5
Load (KN) 0
500
500
37.5
250
Settlement 0 2.0
36.1 35.5
38.2
|(mm)
Also given: Econcre= 25 X 10° MN/m?.
a. Estimate the allowable pile load using Davisson's (1973) method, with FS = 2.5.
b. At the maximum load of 1250 kN, what are the total and net settlements?
NOTE: Please write down all the caleulation steps! Show your work clearly!
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