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The group efficiency of pile group
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- 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 cohesion less soils and less than 100% for those in cohesive soils.
Correct Option: C
Group efficiency,
| ηg = | n × Qu |
It will be greater than or less than 100. It will be usually greater than 100% for loose and medium dense sands and less than 100% for dense sands.
