Question 2:A gravity retaining wall is shown in figure below. Use ô'=2/3¢', and Coulomb's active earthpressure theory.Determine:1. Factor of safety against overturning;2. Factor of safety against sliding;3. The pressure on the soil at the toe and heel.Y = 18.5 kN/m³4i = 32°cj = 0Use Yconcrete = 23.58 kN/m³Note:For Coulomb method, note that the weight 5 mof the soil above the back face of the wall isnot taken into account in the resisting5.7 mP.moment.1502.83 m ------ Ph75°2.167 m1.5 m0.27 m 0.6 m1.53 m0.8 mC'Y2 = 18 kN/m³$i = 24°c = 30 kN/m²0.8 m0.3 m- 3.5 m%3D TUTORIAL (CHAPTER 3 PART 1)A reinforced earth retaining wall is to be 10 m high. Here,e b'e a'glunit areaIG45 + di/2unit weight, y,= 16 kN/m³ and soil fric-tion angle, j = 34°Backfill:SySandSyReinforcement:vertical spacing, Sy = 1 m; horizontalspacing, SH = 1.25 m; width of rein-forcement = 120 mm; f, = 260 MN/m²;Ou = 25°; factor of safety against tiepullout = 3; and factor of safety againsttie breaking = 3Sy(a)SySyz= NSySyIn situ soilDetermine:a. The required thickness of tiesb. The required maximum length of ties

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Question 2: A gravity retaining wall is shown in figure below. Use ô'=2/3¢', and Coulomb's active earth pressure theory. Determine: 1. Factor of safety against overturning; 2. Factor of safety against sliding; 3. The pressure on the soil at the toe and heel. Y = 18.5 kN/m³ $i = 32° e = 0 Use Yconerete = 23.58 kN/m³ Note: For Coulomb method, note that the weight 5 m of the soil above the back face of the wall is not taken into account in the resisting moment. 5.7 m P. 8' 15° 2.83 m – På 75° 2.167 m 1.5 m 0.27 m 0.6 m 1.53 m 0.8 m Y2 = 18 kN/m 4 = 24° = 30 kN/m² 0.8 m 0.3 m %3D 3.5 m

Question 2: A gravity retaining wall is shown in figure below. Use ô'=2/3¢', and Coulomb's active earth pressure theory. Determine: 1. Factor of safety against overturning; 2. Factor of safety against sliding; 3. The pressure on the soil at the toe and heel. Y = 18.5 kN/m³ $i = 32° e = 0 Use Yconerete = 23.58 kN/m³ Note: For Coulomb method, note that the weight 5 m of the soil above the back face of the wall is not taken into account in the resisting moment. 5.7 m P. 8' 15° 2.83 m – På 75° 2.167 m 1.5 m 0.27 m 0.6 m 1.53 m 0.8 m Y2 = 18 kN/m 4 = 24° = 30 kN/m² 0.8 m 0.3 m %3D 3.5 m

Principles of Foundation Engineering (MindTap Course List)

8th Edition

ISBN:9781305081550

Author:Braja M. Das

Publisher:Braja M. Das

Chapter13: Retaining Walls

Section: Chapter Questions

Problem 13.4P

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