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a). The government of Ghana through the infrs agreement has secured funding for the construction of an interchange at Takoradi to case traffic flow within the Takoradi Metropolis. In order to get the required number of road way, it is intended to provide partitions in the form of retaining walls. A consultant was engaged to design these retaining walls. A 4.5m high cantilever retaining wall has been designed The fill consists of two different căiesionless materials as shown in Figure 4. The unit weight of concrete, ve-24KN/m'and friction angle between concrete base and the underlying soil is 20. The underlying soil has a friction angle of 28*and cohesion of 50KN/m². Ignore the effect of the front fill material on the stability of the wall 20KN'm 20kNm 2.5m 4.5m T-17.5kNim 1.4m 0.90m 0.6m 2 5m Figure 4 a). Determine the Rankin's total active lateral carth pressure against the wall Note: Include the pressure distribution sketches along the wall b). As senior geotechnical engineer you have been employed to check the work done by the consultant for its acceptability or otherwise in terms of, Overturning IL Sliding IL Bearing capacity failure e). Will you consider the wall safe? If not what measures should be put in place to make it safe

a). The government of Ghana through the infrs agreement has secured funding for the construction of an interchange at Takoradi to case traffic flow within the Takoradi Metropolis. In order to get the required number of road way, it is intended to provide partitions in the form of retaining walls. A consultant was engaged to design these retaining walls. A 4.5m high cantilever retaining wall has been designed The fill consists of two different căiesionless materials as shown in Figure 4. The unit weight of concrete, ve-24KN/m'and friction angle between concrete base and the underlying soil is 20. The underlying soil has a friction angle of 28*and cohesion of 50KN/m². Ignore the effect of the front fill material on the stability of the wall 20KN'm 20kNm 2.5m 4.5m T-17.5kNim 1.4m 0.90m 0.6m 2 5m Figure 4 a). Determine the Rankin's total active lateral carth pressure against the wall Note: Include the pressure distribution sketches along the wall b). As senior geotechnical engineer you have been employed to check the work done by the consultant for its acceptability or otherwise in terms of, Overturning IL Sliding IL Bearing capacity failure e). Will you consider the wall safe? If not what measures should be put in place to make it safe

Fundamentals of Geotechnical Engineering (MindTap Course List)
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 15.1P
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a). The government of Ghana through the infrs agreement has secured funding for the construction of an interchange at Takoradi to ease traffic flow within the Takoradi Metropolis. In order to get the required number of road way, it is intended to provide partitions in the form of retaining walls. A consultant was engaged to design these retaining walls. A 4.5m high cantilever retaining wall has been designed. The fill consists of two different cảiesionless materials as shown in Figure 4. The unit weight of concrete, ve-24KN/m²and friction angle between concrete base and the underlying soil is 20. The underlying soil has a friction angle of 28 and cohesion of 50kN/m Ignore the effect of the front fill material on the stability of the wall -20KN'm 20kNm 2.5m Y=19kN/m 4.5m 14m Y=17.5kN/m 0.90m 0,6m 2.5m Figure 4 a). Determine the Rankin's total active lateral earth pressure against the wall Note: Include the pressure distribution sketches along the wall b). As senior geotechnical engineer you have been employed to check the work done by the consultant for its acceptability or otherwise terms of Overturning IL. Sliding IIL Bearing capacity failure c). Will you consider the wall safe? If not what measures should be put in place to make it safe
Transcribed Image Text:a). The government of Ghana through the infrs agreement has secured funding for the construction of an interchange at Takoradi to ease traffic flow within the Takoradi Metropolis. In order to get the required number of road way, it is intended to provide partitions in the form of retaining walls. A consultant was engaged to design these retaining walls. A 4.5m high cantilever retaining wall has been designed. The fill consists of two different cảiesionless materials as shown in Figure 4. The unit weight of concrete, ve-24KN/m²and friction angle between concrete base and the underlying soil is 20. The underlying soil has a friction angle of 28 and cohesion of 50kN/m Ignore the effect of the front fill material on the stability of the wall -20KN'm 20kNm 2.5m Y=19kN/m 4.5m 14m Y=17.5kN/m 0.90m 0,6m 2.5m Figure 4 a). Determine the Rankin's total active lateral earth pressure against the wall Note: Include the pressure distribution sketches along the wall b). As senior geotechnical engineer you have been employed to check the work done by the consultant for its acceptability or otherwise terms of Overturning IL. Sliding IIL Bearing capacity failure c). Will you consider the wall safe? If not what measures should be put in place to make it safe
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