Foundation Design: Principles and Practices (3rd Edition)
Foundation Design: Principles and Practices (3rd Edition)
3rd Edition
ISBN: 9780133411898
Author: Donald P. Coduto, William A. Kitch, Man-chu Ronald Yeung
Publisher: PEARSON
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Chapter 7, Problem 7.15QPP

A certain column carries a vertical downward load of 1,200 kN. It is to be supported on a 1 m deep, square footing. The soil beneath this footing has the following properties: γ = 20.5 kN/m 3 , c ' = 5 kPa, and ϕ ' = 36 ° . The groundwater table is at a depth of 1.5 m below the ground surface. Using ASD, compute the footing width required for a factor of safety of 3.5.

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Problem 6: A strip footing founded on dense sand (p =35° from direct shear tests and ysat-17kN/m³), is to be designed to support a vertical load of 400kN per meter length. Determine a suitable width for this footing for FS=3. The footing is located 1 m below the ground surface. The groundwater level is 10 m below the ground surface. Use Meyerhof Eq. but for shape factors to Use DeBeer and for depth factor to use those proposed by Hansen. (use Yb-15.5kN/m³)
A rectangular footing 3m by 4m is founded 1.2m below the ground surface for which the unit weight of soil is 17.8kN/m3. The cohesion strength is 10kPa and the angle of internal friction is 20degrees. Under the condition of general failure, evaluate the contribution from the following to the ultimate soil bearing capacity in kPa. The ground water table is at a level that does not affect the unit weight of the soil. Use Terzaghi’s bearing capacity factor. For Ø=20degrees: Nc = 17.69, Nq = 7.44, Ny = 3.64. 23. Due to Cohesion Strength  Due to soil overburden Due to footing dimension
A strip footing 2.5 m wide is to be constructed at a depth of 3m below ground level. The shear strength parameters to be used in design being c|= 65kN/m2 and ø| = 34°. The unit weight of the soil above water table is 18kN/m3  , and below the water table the saturated unit weight is 20kN/m3. a. If the water table is well below foundation level b. If the water table is at the surface.

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Foundation Design: Principles and Practices (3rd Edition)

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