11.5 Following is the variation of N60 with depth in a granular soildeposit. A concrete pile 9 m long (0.305 m x 0.305 m incross section) is driven into the sand and is fully embedded.Depth (m)1.53.04.5N6048756.07.5169.01810.52111.02412.52014.019 Estimate the allowable load-carrying capacity of the pile(all). Use FS = 4 and Meyerhof's equations [Eqs. (11.42)and (11.52)].

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Answered: 11.5 Following is the variation of N60…

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter9: Pile Foundations

Section: Chapter Questions

Problem 9.6P

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A single solid circular pile of diameter 0.75 m is driven 15 m into soil consisting of 5 m of loose sand over a thick layer of medium dense sand. The water table (WT) is 5.0 m below the ground surface. The upper layer of sand has γ=17kN/m 3 above the WT and γ=19.8kN/m 3 below the WT, c ′ =0,φ ′ =27 ∘ . The lower deposit of dense sand has γ=20.0kN/m 3 below the WT, c ′ =0 , φ ′ =38 ∘ . Along the pile-soil interface, it is assumed that K=1−sinϕ ′ and δ ′ =0.75φ ′ and the pile is assumed to be weightless with the bearing capacity factor N q =120 . (a) Determine the shaft capacity of the pile; (b) Calculate the base capacity of the pile; and (c) Determine the ultimate load capacity of the pile.
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A square concrete pile (30cm side) 10 m long is driven into coarse sandhaving γ = 18.5 kN/m3 & N = 20. Determine the allowable load (F.S = 3.0)
A 5 m deep excavation is required in a dry sand where g 517.5 kN/m3 and f9 5 328 (see Figure 18.11). Determinethe actual depth to which the sheet pile has to be driven andthe required section (from Table 18.1), assuming allowablestress of 190 MN/m2. Use the net pressure diagram.Dactual 5 1.3Dtheory
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The sheet pile is driven in the Cebu South reclamation area and the area to one side is pumped down as shown in the flow net. The permeability of the sand is 0.001 m/s. below the elevation of 20 m us an impermeable rock layer. Determine the flow per unit length.How high (above the ground surface) the water will rise if a piezometer will be placed at A?
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A circular pile having a diameter of 0.33 m is 14.21 m long which is embedded in a layer of dense compacted sand having the given properties. Soil properties: Lateral pressure factor, K = 3.53 Nq = 99 Specific gravity, Gs= 2.61 Void ratio, e =1.21 Saturation above the GWT = 0.41 Ground water table (GWT) is located 3.58 m below the ground. Use unit weight of water = 9.81 kN/m3 Coefficient of friction = 0.41 Factor of safety = 3.98 Calculate the allowable capacity of the pile in kN.
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Q1) Prove that angle of inclination in a Cipolletti weir equals to 14°2¹ ?
Draw a flow net for a single row of sheet piles driven into a permeable layer as showin Figure Q3 (b) below. Thus, determine the seepage loss per meter length of thesheet pile.H1 = 9.6 m D = 5 mH2 = 3.7 m D1 = 13 m
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