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 16.4P
Redo Problem 16.1 with the following: γ = 16.5 kN/m3, cu = 41 kN/m3,
16.1 A continuous footing is shown in Figure 16.17. Using Terzaghi’s bearing capacity factors, determine the gross allowable load per unit area (qall) that the footing can carry. Assume general shear failure. Given: γ = 19 kN/m3, c′ = 31kN/m2,
Figure 16.17
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1. A continuous footing is shown in Figure 16.19. Using Terzaghi's bearing
capacity factors, determine the gross allowable load per unit area (4an) that the
footing can carry. Assume general shear failure. Given: y = 115 lb/ft,
c' = 600 lb/ft', d' = 25°, D, = 3.5 ft, B = 4 ft, and factor of safety = 3.
qall
Unit weight
of soil = y
Figure 16.19
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.
A continuous footing is shown in Figure 16.17. Using Terzaghi’s bearing capacity factors, determine the gross allowable load per unit area (all ) that the footing can carry. Assume general shear failure. Given: γ = 19 kN/m3, c′ = 31kN/m2 , , Df = 1.5 m, B = 2 m, and factor of safety = 3.5.
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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- 7. [Soil Bearing Capacity] ( a gross load of 700 kN. Using a factor of safety 3, determine the required value of B. Assume general shear failure. N. = 63.53,Nq = 47.16, N, = 54.36 A square footing is shown below. The footing will carry Q = 700 kN Y = 17.4 kN/m $ = 36° C = 0 1.2 m Barrow_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_forward2. A spread footing of 1.2 x 1.8 m (B = 1.2 m, L = 1.8 m) is loaded with a resultant force at its center, inclined at 20° to the vertical in the plane perpendicular to the footing length. Calculate the bearing capacity of this footing in MN. Use Prandtl/Reissner/Hansen bearing capacity factors. 20° P Y = 16.0 kN/m' c' = 0 d' = 32° D 1.5 m 1.20 m y = 19.0 kN/m Y = 20.0 kN/m' c' = 0 kPa d' = 340 1.00 marrow_forward
- 7. [Soil Bearing Capacity] a gross load of 700 kN. Using a factor of safety 3, determine the required value of B. Assume general shear failure. N. = 63. 53 , Ng = 47.16, N, = 54.36 »). A square footing is shown below. The footing will carry %3D Q = 700 kN y = 17.4 kN/m 0 = 36° C = 0 1.2 m Barrow_forwardA 2 m wide strip footing is located at a depth of 2 m in a stiff clay of saturated unit weight of 20 kN/m³ and having , = 0° and c₁ = 120 kN/m². Using Terzaghi's bearing capacity equation, compute the safe load carried by footing per metre length with factor of safety F = 3 with respect to shear failure. Given : No = 5.7.arrow_forwardA square footing is proposed to be constructed on the silty sand layer as shown in Figure Q2. If the gross load (Qall) is 600 kN, check whether the foundation can carry the load or not. (Use Terzaghi's bearing capacity equation with general shear failure and FS = 3). 2. Qall Silty Sand 1.5 m y 19 kN/m c' 8 kN/m2 = 25° Ground Water 0.5 m 1.2 m Level Kar 19.0 kN/m' Figure Q2: A Square Footingarrow_forward
- For the rectangular footing (3m×4m) shown in figure. Calculate the factor of safety against general bearing capacity and determine whether design good or not. If,e= 0.35m and q max= 400 Kn/m^2.arrow_forward2. A square footing is proposed to be constructed on the silty sand layer as shown in Figure Q2. If the gross load (Qall) is 600 kN, check whether the foundation can carry the load or not. (Use Terzaghi's bearing capacity equation with general shear failure and FS = 3). 1.5 m 0.5 m Qall 1.2 m Silty Sand Y = 19 kN/m³ c'= 8 kN/m² = 25° Ysat 19.0 kN/m³ Figure Q2: A Square Footing Ground Water Levelarrow_forwardA square footing (1.5 m × 1.5 m) is located at a depth of 1.0 m. The footing is subjected to an eccentric load of 450 kN, with an eccentricity of 0.2 m along one of the symmetrical axes. Determine the factor of safety against bearing failure. U se Vesic's equation. Take y= 21 kN/m³, c = 100 kN/m², p= 0; N = 5.14; s = 1.14; s = 1; d. 1.27 ; d = 1; i = ig = 1. = q qarrow_forward
- 2. A continuous footing is shown in the figure. Use the Terzaghi's bearing capacity equation with the given values: y = 155 pcf, c = 615 psf, p = 28°, Df= 1.8 ft, B = 2.3 ft, and F.S. = 3 qu = CNc + yDiNg + 0.50yBNy a. Determine the gross allowable load per unit area that the footing can carry, in kN/m². b. Determine the net allowable bearing capacity with bearing capacity with a factor of safety of 3, in psf then covert it to kPa. Determine the gross allowable bearing capacity with a factor of safety of 3 with respect to shear failure, in kPa. C.arrow_forward2. A circular footing having a diameter of 2m has its bottom at a depth of 2.5m from the ground surface. Given the following properties: = 17KN/m3, c = 25kPa, ø = 30degrees. Use the Y approximate formulas for the determination of the bearing capacity factors. a.Assuming local shear failure, find the gross bearing сараcity. b.Determine the gross allowable load using a factor of safety of 2 assuming general shear failure. c.Find the width of the strip footing with an equivalent gross allowable load.arrow_forward5A strip footing was constructed on a pure sand which is 1.5 m wide with its base at a depth of 1 m. Using Terzaghi's method, the ultimate bearing capacity of strip footing will be [Take Y₁ = 16 kN/m³, N = 75, Assume general shear failure] 1 (a) 1876 kN/m² (b) 1860 kN/m² (d) 1792 kN/m² (c) 1788 kN/m²arrow_forward
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