Principles of Foundation Engineering, SI Edition
8th Edition
ISBN: 9781305723351
Author: Braja M. Das
Publisher: Cengage Learning US
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Question
Chapter 8, Problem 8.1P
To determine
Find the net ultimate bearing capacity value for the given properties of mat foundation.
Expert Solution & Answer

Answer to Problem 8.1P
The value of net ultimate bearing capacity is
Explanation of Solution
Given information:
The depth of the foundation
The length of the foundation
The width of the foundation
The coefficient of friction
The angle of friction
Calculation:
Find the net ultimate bearing capacity of mat foundation
Therefore, the value of net ultimate bearing capacity is
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For the design of a shallow foundation, given the following:
Soil: ' = 20°
c' = 52 kN/m²
Unit weight, y = 15 kN/m³
Modulus of elasticity, E, = 1400 kN/m²
Poisson's ratio, μs = 0.35
Foundation: L=2m
B=1m
Df = 1 m
Calculate the ultimate bearing capacity. Use the equation:
1
-
qu = c' NcFcs Fcd Fcc +qNqFqsFqdFqc + ½√BN√Fãs F√dƑxc
2
For '=20°, Nc = 14.83, N₁ = 6.4, and N₁ = 5.39.
(Enter your answer to three significant figures.)
qu =
kN/m²
Chapter 8 Solutions
Principles of Foundation Engineering, SI Edition
Ch. 8 - Prob. 8.1PCh. 8 - Following are the results of a standard...Ch. 8 - Repeat Problem 8.2 for an allowable settlement of...Ch. 8 - Prob. 8.6PCh. 8 - Prob. 8.7PCh. 8 - From the plate load test (plate dimensions 1 ft ×...Ch. 8 - Refer to Problem 8.8. If the full-sized foundation...Ch. 8 - The subgrade reaction of a sandy soil obtained...
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