UNIT I SOIL CLASSIFICATION AND COMPACTION
Formation of soil – Soil description – Particle – Size shape and colour – Composition of gravel, sand, silt, clay particles – Particle behaviour – Soil structure – Phase relationship – Index properties – Significance – BIS classification system – Unified classification system – Compaction of soils – Theory, Laboratory and field tests – Field Compaction methods – Factors influencing compaction of soils.
UNIT II EFFECTIVE STRESS AND PERMEABILITY
soil – water – Static pressure in water – Effective stress concepts in soils – Capillary phenomena– Permeability interaction – Hydraulic conductivity – Darcy’s law – Determination of Hydraulic Conductivity – Laboratory Determination (Constant head and falling head methods) and field measurement pumping out in unconfined and confined aquifer – Factors influencing permeability of soils – Seepage – Two dimensional flow – Laplace’s equation – Introduction to flow nets – Simple problems. (Sheet pile and weir).
UNIT III STRESS DISTRIBUTION AND SETTLEMENT
Stress distribution in homogeneous and isotropic medium – Boussinesq theory – (Point land, Line land and udl) Use of New marks influence chart –Components of settlement –– Immediate and consolidation settlement – Terzaghi’s one dimensional consolidation theory – Computation of rate of settlement. – √t and log t methods– e-log p relationship.
UNIT IV SHEAR STRENGTH
Shear strength of cohesive and cohesion less soils – Mohr-Coulomb failure theory – Measurement of shear strength – Direct shear, Triaxial compression, UCC and Vane shear tests – Pore pressure parameters – Cyclic mobility – Liquefaction
. UNIT V SLOPE STABILITY
Stability Analysis – Infinite slopes and finite slopes – Total stress analysis for saturated clay – Friction circle method – Use of stability number – Method of slices – Fellenious and Bishop’s method – Slope protection measures.
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