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1) A frictionless retaining wall is shown in Fig. 1, where the groundwater table lies at a depth of 1.5 m from the ground surface. If the retaining wall moves away from the soil ground, answer the following questions based on Rankine's earth pressure theory. Take the unit weight of water =9.8 kN/m³. 1.5 m Sandy 17 kN/m³, -30°, c=0 (1.1) Show pressure diagrams of lateral earth pressure for this condition. 6.0 m Saturated Sandy 19 kN/m³, -30°, c=0 (1.2) Determine the resultant force of earth pressure per unit length of the retaining wall. (1.3) Also, determine the location of the resultant force of earth pressure obtained in (1.2). Figure 1

1) A frictionless retaining wall is shown in Fig. 1, where the groundwater table lies at a depth of 1.5 m from the ground surface. If the retaining wall moves away from the soil ground, answer the following questions based on Rankine's earth pressure theory. Take the unit weight of water =9.8 kN/m³. 1.5 m Sandy 17 kN/m³, -30°, c=0 (1.1) Show pressure diagrams of lateral earth pressure for this condition. 6.0 m Saturated Sandy 19 kN/m³, -30°, c=0 (1.2) Determine the resultant force of earth pressure per unit length of the retaining wall. (1.3) Also, determine the location of the resultant force of earth pressure obtained in (1.2). Figure 1

Principles of Foundation Engineering (MindTap Course List)
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 13.6P
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1) A frictionless retaining wall is shown in Fig. 1, where the groundwater table lies at a depth of 1.5 m from the ground surface. If the retaining wall moves away from the soil ground, answer the following questions based on Rankine's earth pressure theory. Take the unit weight of water =9.8 kN/m³. 1.5 m Sandy 17 kN/m³, -30°, c=0 (1.1) Show pressure diagrams of lateral earth pressure for this condition. 6.0 m Saturated Sandy 19 kN/m³, -30°, c=0 (1.2) Determine the resultant force of earth pressure per unit length of the retaining wall. (1.3) Also, determine the location of the resultant force of earth pressure obtained in (1.2). Figure 1
Transcribed Image Text:1) A frictionless retaining wall is shown in Fig. 1, where the groundwater table lies at a depth of 1.5 m from the ground surface. If the retaining wall moves away from the soil ground, answer the following questions based on Rankine's earth pressure theory. Take the unit weight of water =9.8 kN/m³. 1.5 m Sandy 17 kN/m³, -30°, c=0 (1.1) Show pressure diagrams of lateral earth pressure for this condition. 6.0 m Saturated Sandy 19 kN/m³, -30°, c=0 (1.2) Determine the resultant force of earth pressure per unit length of the retaining wall. (1.3) Also, determine the location of the resultant force of earth pressure obtained in (1.2). Figure 1
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