Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 10, Problem 10.2P
To determine
Find the value of
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Q2.
a) A 2 mx 2 m square footing is subjected to an axial load of 600 kN and a bending moment of 180
kNm as appears in Figure 2. The footing is located at 1.2 m deep in a cohesionless soil that has a
friction angle of 35° and a saturated unit weight of 18.4 kN/m³. The water table is 2.7 m below the
soil surface. Calculate the following,
(i) Calculate the eccentricity of the load,
(ii) Calculate and draw the soil contact pressure beneath the footing,
(iii) Determine the factor of safety of the footing against the bearing capacity (use the general
Meyerhof, bearing capacity equation).
Assume the soil above water table is saturated.
-600 KN
/sat = 18.4 kN/m³
1.2 m
c'= 0 kPa, o'= 35°
1.5 m
DI.
2 m
M = 180 kNm
Figure 2
Q1. A square footing is located in a dense sand at a depth of 2.80 m. Determine the ultimate bearing capacity for the following water table positions.
a. At ground surface
b. At footing level
c. At 1.5 m below the footing.
Footung size=2.5m
moist unit wight = 20.5Kn/m3
saturated unit weight=21.5Kn/m3
Nc=51.7
Nq=33.8
Ny(Gama)=36.5
A rectangular footing 3m x 2m exerts a pressure of 100kN/m2on a cohesive soil Es= 5x104 kN/m2and µ = 0.5. Estimate the immediatesettlement at the centre, assuming(a) the footing is flexible (b) the footing is rigid (ii) Write about influence of water table in determination of bearing capacity.
Chapter 10 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 10 - Refer to the rectangular combined footing in...Ch. 10 - Prob. 10.2PCh. 10 - Prob. 10.3PCh. 10 - Prob. 10.4PCh. 10 - Prob. 10.5PCh. 10 - Prob. 10.6PCh. 10 - Prob. 10.7PCh. 10 - Prob. 10.8PCh. 10 - A plate loading test was carried out on a medium...Ch. 10 - A 300 mm 450 mm plate was used in carrying out a...
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