Principles Of Foundation Engineering 9e
9th Edition
ISBN: 9781337705035
Author: Das, Braja M.
Publisher: Cengage,
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Chapter 6, Problem 6.4P
Redo Problem 6.2 using the general bearing capacity equation [Eq. (6.28)].
A 5.0 ft wide square footing is placed at 3.0 ft depth within the ground where c′ = 200 lb/ft2, ф′ = 25°, and γ = 115.0 lb/ft3. Determine the ultimate bearing capacity of the footing using Terzaghi’s bearing capacity equation and the bearing capacity factors from Table 6.1. What is the maximum column load that can be allowed with a factor of safety of 3.0?
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3. A square footing that carries an axial load of
150000kg has its bottom resting on a ground water
table at a depth of 2.5m from the ground surface. Take
PDRY = 1860kg/m3 and PSAT = 1950kg/m3, c =
1600kg/m2, ø = 30degrees. Use the approximate
formulas for the determination of the bearing capacity
factors.
a.Compute the required width of the footing using a
factor of safety of 2.
b.Compute the ultimate bearing capacity of the soil.
c.Compute the net factor of safety.
d.Compute the net soil pressure.
For the Soil profile given below, determine the net allowable bearing
capacity of the isolated rectangular footing (2.5m x 3m) that subjected to a
given load as shown. Use FS =3
800 N
60%
$ = 20
C = 35 kN/m?
Y = 16 kN/m
1.2 m
%3D
1.1
1.9
$ = 32
C = 0.0
Y = 18 kN/m
%3D
2,7
Yat = 19.5 kN/m³
Problem 2
A 5ft square footing is constructed 3ft below grade. Find the ultimate bearing capacity of the footing and
the maximum load that can be applied using Terzaghi's BC equation and the factors from Table 6.1.
Assume c' = 200psf, D' = 25°, y = 115pcf and a FOS of 3.0.
Chapter 6 Solutions
Principles Of Foundation Engineering 9e
Ch. 6 - For the following cases, determine the allowable...Ch. 6 - A 5.0 ft wide square footing is placed at 3.0 ft...Ch. 6 - Prob. 6.3PCh. 6 - Redo Problem 6.2 using the general bearing...Ch. 6 - The applied load on a shallow square foundation...Ch. 6 - A 2.0 m wide continuous foundation carries a wall...Ch. 6 - Determine the maximum column load that can be...Ch. 6 - A 2.0 m wide strip foundation is placed in sand at...Ch. 6 - A column foundation (Figure P6.9) is 3 m × 2 m in...Ch. 6 - For the design of a shallow foundation, given the...
Ch. 6 - An eccentrically loaded foundation is shown in...Ch. 6 - Prob. 6.12PCh. 6 - For an eccentrically loaded continuous foundation...Ch. 6 - A 2 m 3 m spread footing placed at a depth of 2 m...Ch. 6 - Prob. 6.15PCh. 6 - A tall cylindrical silo carrying flour is to be...Ch. 6 - A 2.0 m 2.0 m square pad footing will be placed...Ch. 6 - An eccentrically loaded continuous foundation is...Ch. 6 - A square foundation is shown in Figure P6.19. Use...Ch. 6 - The shallow foundation shown in Figure 6.25...Ch. 6 - Consider a continuous foundation of width B = 1.4...
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