For updated version, please click on http://ocw.ump.edu.my GEOTECHNICAL ENGINEERING Lateral Earth Pressure of Soil (Learning activities) by Dr. Amizatulhani Abdullah Faculty of Civil Engineering ad Earth Resources amizatulhani@ump.edu.my

Reference 1) Das, B.M., “Principles of Geotechnical Engineering, 5th edition”, Thomson Learning (2002). Lateral Earth Pressure of Soil by Dr. Amizatulhani Abdullah

Angle of internal friction,   Sand Unit weight =  Angle of internal friction =  Cohesion = 0 Angle of wall friction = 0 H Figure 1 Assuming that the wall shown in Figure 1 is restrained from yielding, find the magnitude and location of the resultant lateral force per unit width of the wall. Case Wall’s height, H (m) Unit weight,  kN/m3 Angle of internal friction,   1 3 17.6 36 2 4.5 20 42 5.5 17.8 37 Lateral Earth Pressure of Soil by Dr. Amizatulhani Abdullah

Angle of internal friction,   Sand Unit weight =  Angle of internal friction =  Cohesion = 0 Angle of wall friction = 0 H Figure 2 Assume that the retaining wall shown in Figure 2 is frictionless. For each problem, determine the Rankine active force per unit length of the wall, the variation of active earth pressure with depth, and the location of the resultant. Case Wall’s height, H (m) Unit weight,  kN/m3 Angle of internal friction,   1 4 18 36 2 5 17 40 Lateral Earth Pressure of Soil by Dr. Amizatulhani Abdullah

Surcharge, q = 15 kN/m2 Soil 1 d = 15.5 kN/m3  = 30 c = 0 3 m Soil 2 sat = 19 kN/m3  = 36 c = 0 3 m Figure 3 A retaining wall is shown in Figure 3. Determine the Rankine active force, Pa per unit length of the wall and the location of the resultant. Lateral Earth Pressure of Soil by Dr. Amizatulhani Abdullah

Angle of internal friction,   Sand Unit weight =  Angle of internal friction =  Cohesion = 0 Angle of wall friction = 0 H Figure 4 Assume that the retaining wall shown in Figure 4 is frictionless. For each problem, determine the Rankine passive force per unit length of the wall, the variation of active earth pressure with depth, and the location of the resultant. Case Wall’s height, H (m) Unit weight,  kN/m3 Angle of internal friction,   1 5 14 35 2 4 15 30 Lateral Earth Pressure of Soil by Dr. Amizatulhani Abdullah

Author Information Dr. Amizatulhani Abdullah Dr Author Information Dr. Amizatulhani Abdullah Dr. Mohd Yuhyi Mohd Tadza Dr. Youventharan Duraisamy Dr. Muzamir Hasan Ir. Azhani Zukri