Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 16, Problem 16.13P
A square footing (B × B) must carry a gross allowable load of 1160 kN. The base of the footing is to be located at a depth of 2 m below the ground surface. If the required factor of safety is 4.5, determine the size of the footing. Use Terzaghi’s bearing capacity factors and assume general shear failure of soil. Given: γ = 17 kN/m3, c′ = 48 kN/m2,
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A 1.5m diameter footing is to be constructed 1.22m below the ground surface. The subsoil consists of a uniform deposit of dense soil having angle of internal friction=25deg, unconfined compressive strength=96KPa, unit wt of soil= 20.12kPa.
a. Compute the gross allowable bearing capacity using terzaghi's equation with factor of safety of 3.Nc=24.1, Nq=13.1, Ny=9.1.
b. Compute the ultimate bearing capacity using terzaghi's equation.Nc=24.1, Nq=13.1, Ny=9.1.
c. Compute the total allowable load including footing,column,weight of soil surcharge that the footing can carry using terzaghi's equation with factor of safety of 3. Nc=24.1, Nq=13.1, Ny=9.1.
A square footing which carries an axial load of 13000 kg has its bottom resting on a ground water table at a depth of 2.5 m from the ground surface. Nc = 35, Nq = 22, Nγ = 19. Take PDRY = 1910 kg/m3 and PSAT = 1600 kg/m3, c = 1800 kg/m2.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.
A circular footing 3 m in diameter is shown below. Assume the general shear failure and use a factor of safety 2.8. Determine the follow?? = ??. ?? , ?? = ??. ??, ?? = ?. ??a. The gross allowable bearing capacity.b. Net Allowable bearing capacityc. The safe load that the footing can carry.
Chapter 16 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
Ch. 16 - A continuous footing is shown in Figure 16.17....Ch. 16 - Refer to Problem 16.1. If a square footing with...Ch. 16 - Redo Problem 16.1 with the following: = 115...Ch. 16 - Redo Problem 16.1 with the following: = 16.5...Ch. 16 - Redo Problem 16.1 using the modified general...Ch. 16 - Redo Problem 16.2 using the modified general...Ch. 16 - Redo Problem 16.3 using the modified general...Ch. 16 - Redo Problem 16.4 using the modified general...Ch. 16 - Prob. 16.9PCh. 16 - If the water table in Problem 16.9 drops down to...
Ch. 16 - Prob. 16.11PCh. 16 - A square footing is subjected to an inclined load...Ch. 16 - A square footing (B B) must carry a gross...Ch. 16 - Redo Problem 16.13 with the following data: gross...Ch. 16 - Refer to Problem 16.13. Design the size of the...Ch. 16 - Prob. 16.16PCh. 16 - Prob. 16.17PCh. 16 - Refer to the footing in Problem 16.16. Determine...Ch. 16 - Figure 16.21 shows a continuous foundation with a...Ch. 16 - The following table shows the boring log at a site...
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- A strip footing is to be designed to carry a load of 800 kN/m at the depth of 7m in a gravelly sand . the appropriate shear strenght parameter are c =0 and φ=40o. Determine the width of the footing if a factor of safety 3 against shear failure is specified and assuming that that the water table may raise to foundation level.Above the water table the unit weight of the sand is 17 kn/m3 and below the water table the saturated unit weight is 20 kN/m3arrow_forwardA square footing is shown below. The footing will carry a gross load of 700 kN. Using a factor of safety 3, determine the required value of B. Assume general shear failure. ?? = ??. ?? , ?? = ??. ??, ?? = ??. ?�arrow_forward). A circular footing 3 m in diameter is shown below. 6. [Soil Bearing Capacity] (* Assume the general shear failure and use a factor of safety 2.8. Determine the follow N. = 25. 13 , Nq = 12.72, N, = 8.34 a. The gross allowable bearing capacity. b. Net Allowable bearing capacity c. The safe load that the footing can carry. Ground surface Y= 18.5 kN/m? C = 80 kPa = 25° 1.1 m D,- 1.8 m Water table Ye = 19.2 kN/m? Diameter = 3marrow_forward
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