The value of x is 8 Q.2. A rectangular foundation of size 2 by 2.5 m is constructed at a depth of D= (1.5 +below the ground surface as shown (where X is your group number). The foundation carries aload of 1000 kN.Use 2:1 method to find the stress increment. (2:1 means 2 vertical : 1 horizontal).a) Compute the settlement due to the consolidation of the clay. Assume the clay as onelayer.b) Repeat (a) by dividing the clay layer into two equal sublayers (each sublayer 3 m).c) Write comments on your results in (a) and (b).1000 kNGround surfaceFine SAND"Yat= 19.81 kN/m²GWT4 m= 19 kN/m³2 m by 2.5 m1.5 mFine SAND y= 19 kN/m³ Ye- 19.81 kN/mCLAY, yF 18 kN/m³Ysat=19 kN/m³e, = 0.8Cc = 0.36mBed Rock Q.1. The figure below shows the flow net for seepage under a concrete dam. The is silty sandwith coefficient of permeability of 4X104 cm/sec, a void ratio of 0.6 and specific gravity of 2.7.The height of water upstream is H=( 6+÷) m (where X is your group number).(a) Determine the flow rate under the dam in m/day per m length of the dam.(b) Determine the water pressure distribution at the base of the dam. (Select 3 points under thebase. Comment on your results.(c) From (b), calculate the resultant uplift force and its location from the upstream face of thedam. Also, calculate the weight of the dam to prevent uplift using a factor of safety of 5.(d) What is the factor of safety against piping? Is the dam safe?(e) Calculate the total vertical overburden stress, pore water pressure and the effective verticaloverburden stress at Points A and B. Comment on your results.H17.5 m1.25 mtx B4 m%3D3DImpervious clay

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Q.2. A rectangular foundation of size 2 by 2.5 m is constructed at a depth of D = (1.5 +) m below the ground surface as shown (where X is your group number). The foundation carries a load of 1000 kN. Use 2:1 method to find the stress increment. (2:1 means 2 vertical : 1 horizontal). a) Compute the settlement due to the consolidation of the clay. Assume the clay as one layer. b) Repeat (a) by dividing the clay layer into two equal sublayers (each sublayer 3 m). c) Write comments on your results in (a) and (b).

Q.2. A rectangular foundation of size 2 by 2.5 m is constructed at a depth of D = (1.5 +) m below the ground surface as shown (where X is your group number). The foundation carries a load of 1000 kN. Use 2:1 method to find the stress increment. (2:1 means 2 vertical : 1 horizontal). a) Compute the settlement due to the consolidation of the clay. Assume the clay as one layer. b) Repeat (a) by dividing the clay layer into two equal sublayers (each sublayer 3 m). c) Write comments on your results in (a) and (b).

Principles of Geotechnical Engineering (MindTap Course List)

9th Edition

ISBN:9781305970939

Author:Braja M. Das, Khaled Sobhan

Publisher:Braja M. Das, Khaled Sobhan

Chapter7: Permeability

Section: Chapter Questions

Problem 7.22P: Refer to Figure 7.24. The following data were collected during the field permeability measurement of...

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