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Civil Engineering - GATE Exam Questions - Discussion

Discussion Forum : GATE Exam Questions - Section 2 (Q.No. 2)
GATE Exam Questions
2.
The group efficiency of a pile group
will be always less than 100%.
will be always greater than 100%.
may be less than 100% or more than 100%.
will be more than 100% for pile groups in cohensionless soils and less than 100% for those in cohesive soils.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 1 of 2.
Vikash said:   5 years ago
Cohensionless soil means no friction between soil particles so easy to driven then why efficiency less than 100%.
MAYUR SAPARIYA said:   5 years ago
Cohesionless soil:

LOOSE SAND > 100%
DENSE SAND < 100%
Cohesive soil <100%

ANSWER = C.
Rajashri said:   6 years ago
C is the correct answer.
Harish said:   6 years ago
C is the correct answer.
Dolly said:   6 years ago
Option A is correct.
Dolly said:   6 years ago
Option A is correct.
Amrutham srikanth said:   7 years ago
I think C is the correct answer.
Himani said:   7 years ago
A is the correct answer.
ALEENA C said:   7 years ago
In cohesion, less soil efficiency increases due to increase in base area. While in cohesive soil surface area decreases as we consider pile in a group. Is that the reason for this?
Dolly said:   7 years ago
Answer is A. The efficiency of pile group is always less than 1.
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