1) The ultimate bearing capacity of the soil in the example is calculated as 350 kN/m^2.
2) The primary consolidation settlement of the clay layer under an increased vertical stress of 140 kPa is estimated to be 0.21 m.
3) The total active force on the retaining wall if tension cracks develop is 35 kN/m.
1) The ultimate bearing capacity of the soil in the example is calculated as 350 kN/m^2.
2) The primary consolidation settlement of the clay layer under an increased vertical stress of 140 kPa is estimated to be 0.21 m.
3) The total active force on the retaining wall if tension cracks develop is 35 kN/m.
1) The ultimate bearing capacity of the soil in the example is calculated as 350 kN/m^2.
2) The primary consolidation settlement of the clay layer under an increased vertical stress of 140 kPa is estimated to be 0.21 m.
3) The total active force on the retaining wall if tension cracks develop is 35 kN/m.
1) The ultimate bearing capacity of the soil in the example is calculated as 350 kN/m^2.
2) The primary consolidation settlement of the clay layer under an increased vertical stress of 140 kPa is estimated to be 0.21 m.
3) The total active force on the retaining wall if tension cracks develop is 35 kN/m.
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Self Assessment Test
GEOTECHNICAL ENGINEERING Duration: 1 hour 30 minutes 5. If the ratio of width of foundation to the width of 1. Consider the following statements: plate is 5 times, the ratio of corresponding settlements 1. 2/3rd of the final load at which total settlement is in clayey soils is 12mm. 2. 50% of the final load which causes a settlement a) 1:1 b) 1:5 equal to 10% of the shaft diameter. c) 15:1 d) 5:1 3. 2/3rd of the final load which causes a total settlement of 10% of the shaft diameter. 4. 50% of the final load which causes total settlement of 6mm.. 6. Inclination of a clay slope
A. 1 and 2 B. 1 and 3 a) can be greater than the angle of shearing resistance
C. 1, 3 and 4 D. 1, 2 4 b) cannot be greater than the angle of shearing resistance c) cannot be greater than angle of repose d) cannot be greater than 450 2. Match List-1 with List-2 and select the correct answer using the codes given below the lists 7. In an undrained triaxial compression test, sample List 1. failed at a deviator stress of 200KN/m 2, when the cell A. SPT Test pressure was 100KN/m2. The cohesion intercept is----- B. Plate load test a) 200KN/m2 b) 100KN/m2 C. Field Vane shear test D. CPT Test c) 300KN/m2 d) 50KN/m2
List 2. 8. During the first stage of triaxial test when the cell 1. Penetration Resistance pressure is increased from 0.10 N/mm2 to 0.26N/mm2, 2. Load-Settlement Data the pore water pressure increases from 0.07 N/mm2 to 3. Point resistance and friction 0.15N/mm2. What is the value of the Skemptons pore 4. In situ torque strength pressure parameter B? Codes A. 0.5 B. -0.5 A B C D a) 1 3 4 2 C. 2.0 D. -2.0 b) 1 2 4 3 9. If is poissons ratio of soil, then the coefficient of c) 3 4 1 2 active earth pressure at rest is d) 3 1 4 2 1 A. B. 1 3. A 3.0m square footing is located in dense sand at a 1+ C. D. depth of 2m. Water table was at 1m below the level of 1+ footing. The moist unit weight of sand above the water table is 18KN/m3 and the saturated unit weight is 10. The soil profile at a site for a proposed office building consists of a layer of fine sand 10.4 m thick 20KN/m3, angle of friction is 350, Nq=33, and N=34.0. above a layer of soft, normally consolidated clay 2 m The ultimate bearing capacity of soil in KN/m2 is---------- thick. Below the soft clay is a deposit of coarse sand. The groundwater table was observed at 3 m below ground level. The saturated unit weight of sand and 4. Consider the following statements related to triaxial clay are resp 19.3kN/m3 and 18 kN/m3. The building test. Which of the following statements are correct: will impose a vertical stress increase of 140 kPa at the 1. Failure occurs along predetermined plane. middle of the clay layer. Estimate the primary 2. Intermediate and minor principal stresses are consolidation settlement of the clay if over equal consolidation ratio of the soil is 1.5. Assume the soil 3. Volume change can be measured above the water table to be saturated, Cc= 0.3, Cr=0.05 4. Field conditions can be simulated and Gs = 2.7.-------------------- A. All wrong B. Only 3 C. 3 and 4 D. 2, 3 4 11. A 6m high retaining wall supports purely cohesive soil. The top 3m of the backfill has bulk density of 17kN/m3 and apparent cohesion of 15kN/m2. The bulk density and apparent cohesion of the bottom 3m is 19kN/m3 and 20kN/m2 respectively. If the tension cracks are develop, the total active force on the wall will be-------
12. The flow net constructed for a dam is as shown
below. The coefficient of permeability in horizontal and vertical direction are 0.01m/day and 0.02m/day respectively. The saturated unit weight of soil is 21kN/m3.
Determine effective stress at point X.--------------
13. Which of the following statement is correct with
reference to triaxial test?
a) Consolidated drained test takes least time for
completion. b) Unconsolidated undrained test is used in situation of dynamic loading. c) Consolidated Undrained Test is done for clays subjected to fast loading rate. d) Unconsolidated Drained Test is least time consuming process.
14. A flownet for and earth dam on impervious
foundation consists of 4 flow channels and 15 equipotential drops. The full reservoir level is 15m above the downstream horizontal filter. Given that horizontal permeability is 0.009mm/s and vertical permeability is 0.001mm/s, the quantity of seepage through dam in mililitre per second per metre will be.
