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GATE CE 2017 Set 1 — Question 46

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NAT+2 / -0HardPile Capacity in SandsDeep FoundationsGeotechnical EngineeringFriction Piles

Geotechnical Engineering → Deep Foundations → Friction Piles

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Question

It is proposed to drive H-piles up to a depth of 7 m7\text{ m} at a construction site. The average surface area of the H-pile is 3 m23\text{ m}^2 per meter length. The soil at the site is homogeneous sand, having an effective friction angle of 32∘32^\circ. The ground water table (GWT) is at a depth of 2 m2\text{ m} below the ground surface. The unit weights of the soil above and below the GWT are 16 kN/m316\text{ kN/m}^3 and 19 kN/m319\text{ kN/m}^3, respectively. Assume the earth pressure coefficient, K=1.0K = 1.0, and the angle of wall friction, δ=23∘\delta = 23^\circ. The total axial frictional resistance (in kN, up to one decimal place) mobilized on the pile against the driving is ________
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