Thursday, April 10, 2014

syllabus - CVL 205: Soil Mechanics

Unit I: Introduction



Concept of soil,Definition and meaning of soil mechanics, History of soil mechanics


Scope of soil mechanics, Soil formation
Unit II: Weight And Volume Relationship Of Soil



Definition of soil mass, Components of soil mass, Phase diagram of soil mass and its


labeling, Weight and volume of soil with usual notation, Dry soil and wet soil


Void ratio, Porosity and their relations, Types of water in soil, Bulk density, saturated,


submerged and dry density, Difference between adsorbed water and absorbed water in


soil, Saturated, partly saturated and dry soil
Unit III: Classification Of Soil



Definition of Coarse and fine grained soil, Homogeneity, Consistency, Cohesiveness,


Toughness, Shear strength, Compressibility, Difference between coarse and fine grained


soil, Two methods of soil classification, Grain size classification of soil as per I.S.I and


classification of soil using plasticity chart, Sieve analysis and Stoke’s law, Sedimentation


analysis of soil, Particle size - Distribution curve on semi log scale, States of consistency and


its diagram, Consistency limits- Liquid limit, plastic limit, shrinkage limit and plasticity


index (P.I), Laboratory methods to find out these limits, Field identification tests
Unit IV: Permeability



Definition and understanding of permeability, Different types of soil and permeability,


Laminar and turbulent flow, Importance of permeability, Darcy’s Law


Coefficient of permeability and its determination in laboratory, Factors affecting


permeability, Confined and unconfined aquifer, Dupit’s Formula, Field determination of


permeability by pumping out and pumping in test, Concepts meaning of seepage, Effects of


seepage, Flow lines and flow net diagram (only understanding)
Unit V: Shear Strength And Bearing Capacity



Concepts of shear strength of loaded soil, Friction and coefficient of friction, between two


soils, Internal friction, Cohesion, Normal and shear stress, Shear strength of soil, Factors on


which shear strength of soil depends, Coulomb’s law, Shear failure, Types of shear test-


Box shear test and Tri axial test, Causes of failure of foundation, Meaning of Bearing


capacity and safe bearing capacity, Concepts of S.B.C. and ultimate bearing capacity,


Methods of finding S.B.C. of soil (Plate load test), Factors affecting bearing capacity of soil
Unit VI: Compaction



Concepts of meaning of compaction, Consolidation and its meaning, Difference between


consolidation and compaction, Max. Dry density and optimum moisture content, Proctor


test, Modified compaction test, Factors affecting compaction, Methods of compaction in

field

Unit VII: Earth Pressure
  

Define Earth pressure, Effective pressure, Neutral pressure, Total pressure, Magnitude of


earth pressure, Rankines theory, Assumptions made in the Rankine’s theory, Earth


retaining structures, Earth pressure on earth retaining structures.
Unit VIII: Soil Stabilization

 
 
Concepts and purpose of soil stabilization, Methods of stabilization, Materials of stabilizing


of soil and their uses, Determination & application of it
Unit IX: Soil Investigations

 
 
Meaning and objectives of soil investigation, Site investigation, Site exploration


Number Depth and disposition of borings, Methods of exploration, Trial pits types of


Augers- Auger boring, Wash boring and percussion, drilling.


Soil sample and their types, Disturbed and undisturbed samples and their meaning, Record

of boring, Borehole log.