Principles of Foundation Engineering (MindTap Course List)
Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 12, Problem 12.3P

A 500 mm diameter are 20 m long concrete pile is driven into a sand where γ = 18.5 kN/m3 and ϕ′ = 32º. Assuming δ′ = 0.7ϕ′ and K = 1.5 Ko, determine the load-carrying capacity of the pile, with a factor of safety of 3. Use Meyerhof’s method [Eq. (12.18)] for computing the point load-carrying capacity Qp, and Eqs. (12.42) and (12.43) for computing the load-carrying capacity of the pile shaft Qs.

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A 20-m-long concrete pile is shown in Figure P9.1. Estimate the ultimate point load Q, by a. Meyerhof's method b. Vesic's method c. Coyle and Castello's method Use m = 600 in Eq. (9.26). 9.1 Concrete pile 460 mm x 460 mm Loose sand di = 30° y = 18.6 kN/m3 20 m Dense sand d'2 = 42° y = 18.5 kN/m3 Figure P9.1

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Principles of Foundation Engineering (MindTap Course List)

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