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2. For the driven pile shown in the soil profile below: Outside Diameter 2 Soft Clay (CL) Inside Diameter 111 Ysa 105 pcf Gu 500 psf, 0 30 Hollow (soil plugged) (Assume NC) Firm Clay (CL) Ya 115 pcf Gu 750 psf, 8 Soil (Assume NC) Note: Pile & soil profile are not drawn to scale 40 Plug a. Calculate the ultimate load carrying capacity of the pile tip (Qp) using Meyerhofs method. Assume that the total vertical stress at the pile tip is not balanced by the weight of the pile. b. Calculate the ultimate load carrying capacity of the pile shaft (Q,) using the a method. Please check the a values that you get for each layer using a variety of sources (at least 3). However, for grading purposes, please carry the a value determined using the Randolph & Murphy (1985) chart forward in your analyses. c. Calculate the ultimate load carrying capacity of the pile shaft (Q,) using the B method. d. Calculate the ultimate load carrying capacity of the pile shaft (Q) using the 2 method e. Using the answer that verage of your answers trom parts (b-d), calculate the maximum allowable load for the pile that is shown. Please use an Allowable Stress Design (ASD) approach for your analysis. Use a factor of safety of 3 for design, and please include the effect of the weight of the pile in your analysis (assume Yrasel 490 pcf and ycone 150 pcf). For this problem, only determine Qan for a geotechnical limit state failure. (Note that in the real world you must also be sure to determine Qail for structural capacity and settlement as well, and select the one that controls).

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WRITE ON Dote WHITE Page 105 Dept sina M 4WRITE ON Dote WHITE Page Pot at 2 -3

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