Friday, April 11, 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


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.