Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781337516877
Author: Das
Publisher: Cengage
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Chapter 16, Problem 16.17P
To determine
Find the gross allowable load that the footing could carry using the effective area concept.
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Students have asked these similar questions
b) As shown in the figure below, a rectangular footing (B x L = 2m x 2.2m) is subjected
to a vertical load (400 kN) and moment (100 kN-m). The eccentricity is in the direction
, the effective length L =___, and
of L. Determine the effective width B' =
=
9max =
-
400 kN
100 kN-m
2.2 m
Rock
b) As shown in the figure below, a rectangular footing (B x L = 2m x 2.2m) is subjected
to a vertical load (400 kN) and moment (100 kN-m). The eccentricity is in the direction
of L. Determine the effective width B'
=
9max =
, and
400 kN
2.2 m
Rock
1
the effective length L'
100 kN-m
A footing 2.25 m square is located at a depth
of 1.5 m in a sand of unit weight 18 kN/m³.
The shear strength parameters are c' = 0 and
6 = 36°. Calculate the safe load carried by the
footing against complete shear failure. Factor
of safety against shear failure is 3. Use
Terzaghi's analysis. (N. = 65.4, N,
= 54.0)
= 49.4,
b.
%3D
N.
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 square footing is shown on the right. The footing is subjected to an eccentric load. For the following cases, determine the gross allowable load that the Qult Unit weight of soil = y (or density = F footing could carry. Use Meyerhof's procedure and Fs = 4. Given: p = 1950 kg/m³ ; c' = 0 $ = 40° D,= 1.4 m ; В 3 3 m ;x = 0.5 %3D y = 0arrow_forwardThe ultimate bearing capacity of a strip footing is 1500 mm wide and 120 cm deep for a frictional cohesive soil, Use Terzaghi's formula at general failure condition. Take Nc= 57.80, Nq= 41.4, Nϒ= 42.4, ϒ = 18kN/m3, c= 15kN/m3arrow_forwardA square footing is shown on the right. The footing is subjected to an eccentric load. For the following cases, determine the gross Qult Unit weight of soil = y (or density = f allowable load that the footing could carry. Use Meyerhof's procedure and Fs = 4. Given: y = 120 lb/ft3 ; c' = 400 lb/ft? $ = 25° %D %3D ; B = 6 ft %3D D, = 4.5 ft ; x = 0 В y = 0,5 ftarrow_forward
- 1. A circular footing 3 m in diameter is shown below. [Soil Bearing Capacity] ( Assume the general shear failure and use a factor of safety 2.8. Determine the follow N. = 25.13 , N, = 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/m³ C = 80 kPa + = 25° 1.1 m D: = 1.8 m Water table Tse = 19.2 kN/m? Diameter = 3 marrow_forwardA strip footing is to carry a load of 750kN/m at a depth of 1.6m in acohesive soil having unit weight of 18kN/ m3 & C=20kN/ m2and angle of internal friction is 25 degree. Determine the width of footing, using F.O.S as 3. Use Terzhagi’s equations. Nc = 25.1, Nq = 12.7 and Nγ = 9.7arrow_forwardFDE 007: A square footing 2m x 2m is located at a depth of 1.2m below the ground surface. The soil properties are cohesion c' = 10 kPa, angle of internal friction = 15 degrees, unit weight of soil = 16.7 kN/m³ and saturated unit weight of soil = 20kN/m³. Use Terzhagi's bearing capacity equation: q=1.3cNc + (gamma)D+Na+ 0.4(B)(gamma)(Ngamma) Bearing capacity factors, Nc = 12.9, Nq = 4.4, Ngamma = 2.5. Find qu under the following conditions: Refer to FDE 007. When the water table is at the ground surface. Select the correct response: 94.563 kPa 277.75 kPa 126.58 kPa 328.67 kPaarrow_forward
- Q: A rigid shallow footing has the dimension of 1m x 1m, shown in the following figure. The depth of footing, mechanical properties of supporting soil and the load transmitted through the footing are shown in the figure. Determine shape factor (Is) and depth factor (I). 500 mm E,= 6500 kN/m² H₂=0.3 E, - 5000 kN/m² 1₂ = 0.3 E, 10000 kN/m = H₂ = 0.3 Ao = 200 kN/m² 0.0 m 3.0 m 5.0 m 8.0 marrow_forwardEx1: A footing is uniformly loaded with q = 100 kN/m² as shown in the figure. Compute the vertical stress increments under Points A, B, and C at z = 10 m. By 13.5 Footing 12m Use Vertical stress Increment under corner of rectangular footing 7 (Plane view) 6arrow_forwardA rectangular footing 2 m x 3 m carries a column load of 600 kN a at depth of 1 m. The footing rests on a c-O soil strata 6 m thick, having Poisson's ratio of 0.25 and Young's modulus of elasticity as 20000 kN/m2. The immediate elastic settlement of the footing occurs as soon as the load is applied. The depth of the footing after immediate settlement from original ground level will be. (Take I, = 1.06) mm.arrow_forward
- A 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_forwardA square footing 3 m x 3 m is supporting an axial load of 650 kN. The weight of the soil is aasumed to be 17.32 kN/m^3. Compute the vertical stress increment due to this load at a depth of 1.5 m below the center of the footing using the approximate method. a. 51.46 kPa b. 32.10 kPa c. 76.54 kPa d. 50.56 kPaarrow_forward1. A strip footing 1.10 m wide is supported in a uniform deposit of stiff clay. Bottom of the footing is 0.70 m below the ground surface. Unconfined compressive strength of soil is 134 kPa. Unit weight of soil is 20.42 kN/m3. Terzaghi’s bearing capacity factors are as follows: Nc = 37.20, Nq = 22.50, NΥ = 19.(a) What is the ultimate bearing capacity of this footing? (b) What is the allowable bearing capacity when FS = 3.5? (c) Compute the allowable wall load.arrow_forward
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