Principles of Foundation Engineering (MindTap Course List)
8th Edition
ISBN: 9781305081550
Author: Braja M. Das
Publisher: Cengage Learning
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Chapter 4, Problem 4.14P
Consider a continuous foundation of width B = 1.4 m on a sand deposit with c′ = 0, ф′ = 38°, and γ = 17.5 kN/m3. The foundation is subjected to an eccentrically inclined load (see Figure 6.33). Given: load eccentricity e = 0.15 m, Df = 1 m, and load inclination β = 18°. Estimate the failure load Qu(ei) per unit length of the foundation
- a. for a partially compensated type of loading [Eq. (6.89)]
- b. for a reinforced type of loading [Eq. (6.90)]
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Question 1:
A cylindrical soil sample is connected to two water reservoirs:
a) Determine the pressure, elevation, and total head at a point one meter above the bottom of the sample (point A).
b) Calculate the pore pressure and effective stress at point A if the soil has a saturated unit weight of 18.7kN/m^3. c) Determine the water flow rate though the sample if the soil has a coefficient of permeability of 0.19 cm/s and the radius of the sample is 20 mm.
d) Is it possible for the soil to reach the “quick condition”(zero effective stress) by raising the level of the water in the upper reservoir? Why or why not?.
Question 2:
A new structure is planned to be constructed in…
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Question 1: (refer to the image for visual understanding)
For the soil element shown on the right:
a) Draw the Mohr’s circle for this case
b) Find the major and minor principal stresses
c) Find the normal and shear stresses on plane AB.
Question 2: (refer to the image)
A soil sample in a triaxial test with a cell pressure of 100 kPa fails when the vertical stress reaches 400 kPa. The resulting failureplane is observed to dip 60 degrees from horizontal (see figure).
Assume that the soil is drained during the test, i.e. there is no pore pressure.
a) Determine the friction angle of the soil. Hint: draw the…
Please solve all points
Chapter 4 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 4 - For the following cases, determine the allowable...Ch. 4 - A square column foundation has to carry a gross...Ch. 4 - Prob. 4.3PCh. 4 - The applied load on a shallow square foundation...Ch. 4 - A column foundation (Figure P6.9) is 3 m × 2 m in...Ch. 4 - Prob. 4.6PCh. 4 - For the design of a shallow foundation, given the...Ch. 4 - An eccentrically loaded foundation is shown in...Ch. 4 - Prob. 4.9PCh. 4 - For an eccentrically loaded continuous foundation...
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