GATE CE 2019 Set 1 — Question 62
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Geotechnical Engineering → Deep Foundations → Pile Capacity in Clays
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Question
A reinforced concrete circular pile of length and diameter is embedded in stiff clay which has an undrained unit cohesion of . The adhesion factor is . The Net Ultimate Pullout (uplift) Load for the pile (in , round off to 1 decimal place) is ________
Correct answer
1240 to 1250
Solution
The net ultimate pullout capacity () of a pile in clay is given by the skin friction resistance:Where:
- (adhesion factor)
- (undrained cohesion)
- (surface area of the pile)
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