Internal Marks: 40
External Marks: 60
Total Marks: 100
1. Basic Concepts: Definition of soil and soil mechanics, common soil mechanics problems in
Civil Engineering. Principal types of soils. Important properties of very fine soil. Characteristics
of main Clay mineral groups. Weight volume relationship and determination of specific gravity
from pycnometer test. Field density from sand replacement method and other methods.
2. Index Properties: Grain size analysis. Stokes’s law and Hydrometer analysis. Consistency
and sensitivity of Clay, Atterbeg Limits, Flow Index and Toughness Index. Underlying theory of
shrinkage limit determination. Classification of coarse and fine grained soils as per Indian
Standard.
3. Compaction: Definition and object of compaction and concept of O.M.C. and zero Air Void
Line.Modified proctor Test. Factors affecting compaction Effect of compaction on soil properties
and their discussion. Field compaction methods- their comparison of performance and
relativesuitability. Field compacative effort, Field control of compaction by proctor.
4. Consolidation: Definition and object of consolidation, Difference between compaction and
consolidation. Concept of various consolidation characteristics i.e. av, mv and cv, primary and
secondary consolidation. Terzaghi's Differential equation and its derivation. Boundary conditions
for Terzaghi's solution for one dimensional consolidation concept of cv, tv & U. consolidation
test determination of cv from curve fitting methods, consolidation pressure determination.
Normally consolidated and over consolidated clays. Causes of over-consolidation. Effect of
disturbance on e-Logσ curves of normally consolidated clays, importance of consolidation
settlement in the design of structures.
5. Permeability and Seepage: Concept of effective stress principal, seepage pressure, critical
hydraulic gradient and quick sand condition. Capillary phenomenon in soil. Darcy’s Law and its
validity, seepage velocity, co-efficient of permeability (k) and its determination in the laboratory.
Average permeability of startified soil mass, factors affecting 'k' and brief discussion.
6. Shear Strength: Stress analysis of a two dimensional stress system by Mohr circle. Concept
of pole. Coulomb's law of shear strength coulomb - Mohr strength theory. Relation between
principal stesses at failure. Direct, triaxial and unconfined shear strength tests. Triaxial shear
tests based on drainage conditions typical strength envelopes for clay obtained from these tests.
Derivation of skempton's pore pressure parameters. Stress strain and volume change
characteristics of sands.
7.Stability of Slopes: slope failure, base failure and toe failure - Swedish circle method - φ=0
analysis and c=0 analysis - friction circle method - Taylor’s stability number - stability charts -
sliding block analysis
External Marks: 60
Total Marks: 100
1. Basic Concepts: Definition of soil and soil mechanics, common soil mechanics problems in
Civil Engineering. Principal types of soils. Important properties of very fine soil. Characteristics
of main Clay mineral groups. Weight volume relationship and determination of specific gravity
from pycnometer test. Field density from sand replacement method and other methods.
2. Index Properties: Grain size analysis. Stokes’s law and Hydrometer analysis. Consistency
and sensitivity of Clay, Atterbeg Limits, Flow Index and Toughness Index. Underlying theory of
shrinkage limit determination. Classification of coarse and fine grained soils as per Indian
Standard.
3. Compaction: Definition and object of compaction and concept of O.M.C. and zero Air Void
Line.Modified proctor Test. Factors affecting compaction Effect of compaction on soil properties
and their discussion. Field compaction methods- their comparison of performance and
relativesuitability. Field compacative effort, Field control of compaction by proctor.
4. Consolidation: Definition and object of consolidation, Difference between compaction and
consolidation. Concept of various consolidation characteristics i.e. av, mv and cv, primary and
secondary consolidation. Terzaghi's Differential equation and its derivation. Boundary conditions
for Terzaghi's solution for one dimensional consolidation concept of cv, tv & U. consolidation
test determination of cv from curve fitting methods, consolidation pressure determination.
Normally consolidated and over consolidated clays. Causes of over-consolidation. Effect of
disturbance on e-Logσ curves of normally consolidated clays, importance of consolidation
settlement in the design of structures.
5. Permeability and Seepage: Concept of effective stress principal, seepage pressure, critical
hydraulic gradient and quick sand condition. Capillary phenomenon in soil. Darcy’s Law and its
validity, seepage velocity, co-efficient of permeability (k) and its determination in the laboratory.
Average permeability of startified soil mass, factors affecting 'k' and brief discussion.
6. Shear Strength: Stress analysis of a two dimensional stress system by Mohr circle. Concept
of pole. Coulomb's law of shear strength coulomb - Mohr strength theory. Relation between
principal stesses at failure. Direct, triaxial and unconfined shear strength tests. Triaxial shear
tests based on drainage conditions typical strength envelopes for clay obtained from these tests.
Derivation of skempton's pore pressure parameters. Stress strain and volume change
characteristics of sands.
7.Stability of Slopes: slope failure, base failure and toe failure - Swedish circle method - φ=0
analysis and c=0 analysis - friction circle method - Taylor’s stability number - stability charts -
sliding block analysis
can you plzz send me all question papers of 5th semester in my email id: iammohsinriaz@gmail.com
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