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The equation used for determining the bearing capacity of a group of friction piles is __________

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in Geotechnical Engineering II by (93.8k points)
The equation used for determining the bearing capacity of a group of friction piles is __________

(a) Qup = Rf + Rp

(b) Qug = n Qup . ηg

(c) Qug = n Qup / ηg

(d) None of the mentioned

I had been asked this question in an international level competition.

The question is from Group Action in Piles in chapter Pile Foundations of Geotechnical Engineering II

1 Answer

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by (243k points)
Correct choice is (b) Qug = n Qup . ηg

The explanation: A method of estimating the bearing capacity of a group of friction piles is to multiply the quantity nQup by a reduction factor called the efficiency of pile group.

Qug = n Qup . ηg.

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