Specific Objectives of course:
Introduction: Applications in engineering practice, soil formation: mechanical and chemical weathering agents. Types of soil deposits & their properties, soil structure and clay minerals.
Index properties of soil: Water content, voids ratio, porosity, degree of saturation, specific gravity, unit weight and their determination. Mass-volume relationships.
Soil Classification: Importance of soil classification. Grain size distribution by sieve analysis and hydrometric analysis, Atterberg’s limits, classification systems.
Geotechnical Investigation: Purpose, phases and scope. Methods of soil exploration: probing, test trenches/pits, auger boring, wash boring, rotary drilling. Disturbed and undisturbed samples. Introduction to Geotechnical report writing.
Permeability and Seepage: Darcy’s law, factors affecting permeability, laboratory and field determination of permeability. Introduction to flow nets. Estimation of seepage quantity and gradients.
Stress Distribution in Soils: Geo-static stresses, total stress and pore pressure, effective stress, capillarity and its effects. Vertical stresses induced due to structural loads: Boussinesq & Westergaard’s theory. Pressure bulb, Stress distribution diagrams on horizontal and vertical planes. Induced stress at a point outside the loaded area: use of influence charts and 2:1 method.
Shear Strength: Concept, parameters, Coulomb’s law, shear strength of cohesive and non-cohesive soils. Factors affecting shear strength of soil and its applications in engineering. Laboratory and field tests for determination of shear strength.
Compaction: Mechanism, moisture density relationship, compaction standards, laboratory tests, factors affecting compaction, field control and measurements of in-situ density. Field compaction equipment. Relative density, relative compaction & compaction specification
The Design work and/or experiments related to above mentioned outline shall be covered in the Laboratory/Design class.