EBK PRINCIPLES OF FOUNDATION ENGINEERIN
8th Edition
ISBN: 8220100547058
Author: Das
Publisher: CENGAGE L
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Chapter 4, Problem 4.6P
To determine
Find the size of the foundation.
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A column foundation (Figure P4.5) is 3 m x 2 m in plan. Given: Df = 1.5 m, Φ' = 25°, c' = 70 kN/m2. Using Eq. (4.26) and FS = 3, determine the net allowable load [see Eq. (4.22)] the foundation could carry.
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The applied load on a shallow square foundation makes an angle
of 15° with the vertical. Given: B= 1.83 m, D;= 0.91 m, 7 = 18.08
kN/m³, ' = 25°, and d' = 23.96 kN/m?. Use FS= 4 and determine
the gross allowable (vertical component) load. Use Eq. (16.9).
Chapter 4 Solutions
EBK PRINCIPLES OF FOUNDATION ENGINEERIN
Ch. 4 - For the following cases, determine the allowable...Ch. 4 - A square column foundation has to carry a gross...Ch. 4 - Prob. 4.3PCh. 4 - The applied load on a shallow square foundation...Ch. 4 - A column foundation (Figure P6.9) is 3 m × 2 m in...Ch. 4 - Prob. 4.6PCh. 4 - For the design of a shallow foundation, given the...Ch. 4 - An eccentrically loaded foundation is shown in...Ch. 4 - Prob. 4.9PCh. 4 - For an eccentrically loaded continuous foundation...
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- For a square foundation, according to the information given and the assumption of vertical load, it is desirable to determine the dimensions of the foundation. Use the general formula. D, = 2 m; Qa = 3330 kN, y = 16.5 kN/m'; 6' = 30°; c' = 0; and FS 4.arrow_forwardFor a square foundation that is B × B in plan, D¡ = 2 m; vertical gross allowable load, Qall 3.6 = 3330 kN, y 16.5 kN/m³; ø' = 30°; c' 0; and FS = 4. Determine the size of the foundation. Use Eq. (3.19).arrow_forwardH.Q 1 Consider a rectangular foundation. Given: B = 1.5 m, L = 2.5 m, Df= 1.2 m, H =0.9 m, o' = 40°, c' = 0, and y= 17 kN/m3. Using a factor of safety of 3, determine the gross allowable load the foundation can carry. Use Meyerhof equation.arrow_forward
- 4.6 For a square foundation that is B X B in plan, D, = 2 m; vertical gross allowable load, Qall = 3330 kN, y = 16.5 kN/m³; ' = 30°; c' = 0; and FS = 4. Determine the size of the foundation. Use Eq. (4.26).arrow_forwardFor a square foundation that is B x B in plan, Df. = 2 m; vertical grossallowable load, Qall =3330kN, γ [gamma] =16.5 kN/m3; Φ=30; c= 0; and FS= 4. Determine the size of the foundation.arrow_forwardQuestion 12.4 Thanksarrow_forward
- Q6. A column foundation (Figure below) is 3 m X 2 m in plan. Given: De = 1.5 m, o = 25°, c= 70 kN/m . Terzaghi's equation and assume general shear failure in soil and FS = 3, determine the net alowable koad. y = 17 kN/m 1.5 m 3 m x 2 m Yat = 19.5 kN/m Groundwater levelarrow_forwardA column foundation (Figure P3.5) is 3 m x 2 m in plan. Given: D; = 2 m, o' = 25°, c' = 50 kN/m². Using Eq. (3.23) and FS = 4, determine the net allowable load [see Eq. (3.15)] the foundation could carry. Use bearing capac- ity, shape, and depth factors given in Şection 3.6.arrow_forwardProb. 3): A square shallow foundation is shown below. If the load eccentricity is 0.3 m, determine the maximúm allowable load that the foundation can carry. Use Mayerhof's method, and FS as 4. (Eccentricity in one direction only) e = 0.3 m Qal Y = 16.3 kN/m3 c' = 20 kN/m? p'=28° 1.0 m 1.5 m X 1.5 m Centerlinearrow_forward
- A square foundation is 1.5m x 1.5m in plan. The soil supporting the foundation has a friction angle '=20 and c'=15.2 kN/m². The unit weight of soil is y=17.8 kN/m². Determine the allowable gross load on the foundation with a factor of safety F,=4. Assume that the depth of the foundation D=1m and the general shear failure occur in the soils mass.arrow_forwardThe load on the square foundation with a vertical axis has an angle of 15 degrees. Based on the information provided, it is desirable to determine the allowable tolerable load. Use the general formula. B = 1.83 m, D, 0.9 m, y 18.08 kN/m, ' = 25°, and c' 23.96 kN/m. Use FS 4 %3Darrow_forwardA square foundation is shown in Figure P6.19. Use FS = 6,and determine the size of the foundation. Use Prakash and Saran's method [Eq. (6.59)].arrow_forward
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