I need answer only for question NO 14.2 HFigure 14.20factor of safety with respect to overturning and sliding and bearing capacity. Usaactive pressure for the calculation.14.6 Repeat Problem 14.5. Use Coulomb's active pressure calculation and & = .14.7 Determine the factor of safety of the retaining wall shown in Figure 14.22 withfailure The uniL weight of the concrete is 14.1 State whether the following are true or false.a. Cantilever retaining walls do not have steel reinforcements.b. Cantilever retaining walls have smaller cross sections than gravity retaining walls.c. Adhesion at the base of the retaining wall is generally less than the cohesion of the soilbeneath the base.d. Provision of a key at the base of the wall reduces the passive resistance.e. The pressure distribution beneath the base of a retaining wall is never uniform.For Problems 14.2 through 14.6, use k = k2 = and P, = 0 while using Eq. (14.10).14.2 For the cantilever retaining wall shown in Figure 14.20, the wall dimensions are H = 24 ft,1.2 ft, x2 = 1.8 ft, x3 = 4.5 ft, x4 = 10 ft, x5 = 3 ft, D = 5.25 ft, and =10°. The soil= Ixproperties are YI = 107 lb/ft', i = 32°, y2 = 112 lb/ft, = 28°, and c = 630 lb/ft.Calculate the factors of safety with respect to overturning, sliding, and bearing capacity. Useunit weight of concrete, y, = 150 lb/ft'.14.3 Repeat Problem 14.2 with the following:Wall dimensions: H = 18 ft, x, = 18 in., x230 in., x, = 4 ft, x = 6 ft, xg = 2.75 ft,%3DD = 4 ft, a = 10°110 Ib/ft", ; = 18", c = 800 lb/ft²Soil properties: YI = 117 lb/ft', i = 34°, y2 =Use unit weight of concrete, y = 150 lb/ft'.14.4 Repeat Problem 14.2 with the following:Wall dimensions: H = 22 ft, x = 12 in., x2 = 27 in., x3 = 4.5 ft, x = 8 ft, xs = 2.75 ft,%3DD = 4 ft, a = 5°Soil properties: yI = 110 lb/ft', 6i = 36°, y2= 120 lb/ft', = 15°, ch = 1000 lb/ft150 lb/ft.14.5 The gravity retaining wall shown in Figure 14.21 has wall dimensions of H = 15 ft, x = 1.5 ft,Use unit weight of concrete, Ye =W59 F Mostly cle

Consider the following figure: The value of the active earth pressure coefficient, Ka from the…

14.2 For the cantilever retaining wall shown in Figure 14.20, the wall dimensions are H = 24 ft, X1 = 1.2 ft, x2 = 1.8 ft, x3 = 4.5 ft, x4 = 10 ft, xs = 3 ft, D = 5.25 ft, and a = 10°. The soil properties are Y = 107 lb/ft', 'i = 32°, y2 = 112 lb/ft’, = 28°, and c = 630 Ib/ft. Calculate the factors of safety with respect to overturning, sliding, and bearing capacity. Use unit weight of concrete, y. = 150 lb/ft'.

14.2 For the cantilever retaining wall shown in Figure 14.20, the wall dimensions are H = 24 ft, X1 = 1.2 ft, x2 = 1.8 ft, x3 = 4.5 ft, x4 = 10 ft, xs = 3 ft, D = 5.25 ft, and a = 10°. The soil properties are Y = 107 lb/ft', 'i = 32°, y2 = 112 lb/ft’, = 28°, and c = 630 Ib/ft. Calculate the factors of safety with respect to overturning, sliding, and bearing capacity. Use unit weight of concrete, y. = 150 lb/ft'.

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter15: Retaining Walls, Braced Cuts, And Sheet Pile Walls

Section: Chapter Questions

Problem 15.3P

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