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 3, Problem 3.7QPP
A vertical load of 300 kN is applied to a
- Compute the induced vertical stress,
- Compute the induced vertical stress,
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A vertical load of 300 kN is applied to a 1.5 m * 1.5 m area at the ground surface that is level.a. Compute the induced vertical stress, ∆sz, at a point 2.0 m below the corner of this squareloaded area.b. Compute the induced vertical stress, ∆sz, at a point 2.0 m below the center of this squareloaded area.
6. A concentrated load of 1500 KN is applied at the ground surface at point A whose coordinate is
(0,0,0).
a. Determine the vertical stress, in KN at a point 2.5 m directly below A.
b. Determine the vertical stress, in KN at a point whose coordinate is (1.5, 0, 2.5).
C.
Determine the vertical stress, in KN at a point whose coordinate is (1.5, 2, 2.5).
A concentrated load of 2000 kN is applied at the ground surface. Determine the vertical stress at a
pome E which is 6m directly below the load. Also calculate the vertical stress at a point R which is
at a depth of 6m but at a horizontal distance of 5m from the axis of the load.
Chapter 3 Solutions
Foundation Design: Principles and Practices (3rd Edition)
Ch. 3 - Explain the difference between moisture content...Ch. 3 - A certain saturated sand has a moisture content...Ch. 3 - Consider a soil that is being placed as a fill and...Ch. 3 - A sample of soil has a volume of and a weight of...Ch. 3 - A site is underlain by a soil that has a unit...Ch. 3 - The sub-surface profile at a certain site is shown...Ch. 3 - A vertical load of 300 kN is applied to a area at...Ch. 3 - A vertical load of 20 k is applied to a area at...Ch. 3 - 3m3m footing is to be built on the surface of a 15...Ch. 3 - A 3 ft square footing carries a sustained load of...
Ch. 3 - A 2m thick fill is to be placed on the soil shown...Ch. 3 - Estimate the effective friction angle of the...Ch. 3 - Explain the difference between the drained...Ch. 3 - A soil has c=5 kPa and =32. The effective stress...Ch. 3 - A footing with an embedment of 2 m is embedded in...Ch. 3 - Prob. 3.16QPPCh. 3 - Prob. 3.17QPPCh. 3 - A 9 ft thick fill is to be placed on the soil...
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- A concentrated load of 2000 kN is applied at the ground surface. Determine the vertical stress at a point P which is 6m directly below the load. Also calculate the vertical stress at a point R which is at a depth of 6m but at a horizontal distance of 5m from the axis of the load.arrow_forwardGround surface 2. The soil profile for a proposed construction site is shown. The groundwater table is located 2 m below the ground surface. Assume geostatic conditions and ignore any negative pore-water pressures due to capillary rise. Yt = 13.2 kN/m 2. Sand Ysat =? G, = 2.70 n= 0.5 (a) What is the effective stress (kPa) at point A? (Ans: 43 kPa) (b) What is the effective stress (kPa) at point B? (Ans: 82 kPa) (c) Ten years from now, the depth of the groundwater table will change, resulting in a new effective stress at point B of 72.6 kPa. Based on this information, how far below the ground surface will the new location of the groundwater table be? (Ans: 0 m; GWT is at the ground surface) A Clay Ysat = 19.6 kN/marrow_forward2 m e = 0.53 Gs = 2.65 A 4 m Dry Sand e = 0.47 6 m Saturated Sand Gs = 2.67 a. Determine the effective stress at point A in kPa. b. Determine the effective stress at point B in kPa. b. Determine the effective stress at point C in kPa. c. Determine how high (m) from point B will the water table rise up so that the effective stress at C is 125 kpa.arrow_forward
- 3. | Calculate the change in total vertical normal stress (o) and in effective stress (o) ai a depth of 10 feet in a saturated clay layer if the water table is dropped from the ground surface to a depth of 20 feet below the ground surface. The clay has a water content of 35%, S = 100% and G, = 2.75. Assume that no change in degree of saturation or water content occurs when the water table is lowered. Take into account the capillary stresses generated.arrow_forwardAn electric power transmission pole is 12 m above ground level and embedded 2 m into the ground. The butt diameter is 450 mm and the tip diameter (the top of the pole) is 320 mm. The weight of the pole, cross arms, and wires is 33 kN. Assuming the pole transmits the load as a point load, find the change in vertical stress in kPa at 2 m depth.arrow_forwardA circular tank full of water, the tank imposes a uniformly distributed load of 2000 lb/ft2 at the ground surface. The radius of the circular area is 10 ft, the soil unit weight is y=110 lb/fť. Compute the following: a) The vertical stress at a point 20 ft below the center of the circular area b) The vertical stress at 20 ft below the ground surface at a horizontal distance of 5 ft from the center of the circular tank. c) The vertical stress at 20 ft below the edge of the circular area d) The vertical stress at 20 ft below the ground surface at a horizontal distance of 18 ft from the center of the circular area.arrow_forward
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