STUPIDSID
Answer any one question from Q1 and Q2
1 (a)
State details of all natural transportation agents for formation of soils and give one example of each category.
6 M
1 (b)
A sand deposite with specific gravity of 2.65, has bulk density of 19.20 kN/m3 on the filed. Its natural moisture content is 9%. Determine the critical hydraulic gradient of the sand deposite. Take γW=9.81 kN/m3.
6 M
2 (a)
Define consistency of soils and show the four states of consistency graphically with appropriate consistency limits.
6 M
2 (b)
With neat sketch explain the procedure of construction of flownet for seepage through earthen dam.
6 M
Answer any one question from Q3 and Q4
3 (a)
Explain the procedure for unconfined compression test with neat sketches.
6 M
3 (b)
Explain the process of field compaction and its control using Proctor needle.
6 M
4 (a)
State and explain the terms involved in Boussinesq? point
Load and circular load equation for vertical stress determination.
6 M
4 (b)
Define sensitivity:
A clayey sample when tested in unconfined compression, gave compressive strength of 100 kN/m2. Specimen of same clay, with same initial condition is subjected to undrained, unconsolidated triaxial test under a cell pressure of 100 kN/m2. Determine the axial stress in kN/m2 of failure.
A clayey sample when tested in unconfined compression, gave compressive strength of 100 kN/m2. Specimen of same clay, with same initial condition is subjected to undrained, unconsolidated triaxial test under a cell pressure of 100 kN/m2. Determine the axial stress in kN/m2 of failure.
6 M
Answer any one question from Q5 and Q6
5 (a)
Determine the relation for lateral earth pressure in active state for submerged cohesionless backfill.
7 M
5 (b)
Explain step by step procedure for determination of lateral earth pressure graphically by Rehbann? method with neat sketch.
6 M
6 (a)
Define the term lateral earth pressure in passive state. A wall 8 m high with a smooth vertical block retains dry cohesionless sand with γ=18 kN/m3 and ϕ=30°. Determine the total lateral pressure per meter length of the wall in passive state.
7 M
6 (b)
Determine the relation for lateral earth pressure in active state for dry and cohesive bacfill.
6 M
7 (a)
Explain Taylor's stability number.
Determine the factor of safety for a cohesive soil (ϕ=0)7 m high, if its stability number is known to be 0.156. The slope material has cohesion = 25 kN/m2 and unit weight 18.5 kN/m3.
Determine the factor of safety for a cohesive soil (ϕ=0)7 m high, if its stability number is known to be 0.156. The slope material has cohesion = 25 kN/m2 and unit weight 18.5 kN/m3.
7 M
7 (b)
State and describe the zones in the contaminated soil strata below the waste dump and how is their extent determined?
6 M
8 (a)
Discuss the slope stability measures that can be adopted to avoid the occurrence of landslides.
6 M
8 (b)
What is subsurface contamination? Discuss the solidification and stabilization method for control of subsurface contamination.
7 M
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