GATE CE 2024 Set 2 — Question 34
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Geotechnical Engineering → Deep Foundations → Pile Capacity in Clays
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Question
A reinforced concrete pile of length and diameter is embedded in a saturated pure clay with unit cohesion of . If the adhesion factor is , the net ultimate uplift pullout capacity (in kN) of the pile is _________________ (rounded off to the nearest integer).
Correct answer
545 to 555
Solution
The net ultimate uplift capacity () of a pile in saturated clay is provided by the skin friction resistance along the pile shaft.The formula for net ultimate uplift capacity is:Where:
- is the adhesion factor =
- is the unit cohesion =
- is the surface area of the pile shaft =
- is the diameter of the pile =
- is the embedded length of the pile =
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