Verify Account

SYLLABUS

UNIT-I

INTRODUCTION Soil formation – Soil structure and clay mineralogy – Mass – Volume relationship – Relative density. INDEX PROPERTIES OF SOILS: Moisture content, Specific gravity, Insitu density, Grain size analysis – Sieve and hydrometer methods – Consistency limits and indices – I.S. Classification of soils.

UNIT-II

PERMEABILITY: Soil water – Capillary rise – Adsorbed water – Flow of water through soils – Darcy’s law – Permeability – Factors affecting permeability – Laboratory determination of coefficient of permeability – Permeability of layered soils. SEEPAGE THROUGH SOILS: Total, neutral and effective stresses – Quick sand condition – Seepage through soils – Flow nets: Characteristics and uses.

UNIT-III

STRESS DISTRIBUTION IN SOILS: Boussinesq’s and Wester gaard’s theories for point loads and areas of different shapes – Newmark’s influence chart. COMPACTION Mechanism of compaction – Factors affecting – Effects of compaction on soil properties – Field compaction equipment – Compaction control.

UNIT-IV

CONSOLIDATION Types of compressibility – Immediate settlement, Primary consolidation and secondary consolidation – Stress history of clay; e-p and e-log p curves – Normally consolidated soil, Over consolidated soil and under consolidated soil – Pre-consolidation pressure and its determination – Terzaghi’s I-D consolidation theory – Coefficient of consolidation: Square root time and logarithm of time fitting methods

UNIT-V

SHEAR STRENGTH OF SOILS: Importance of shear strength – Mohr’s – Coulomb failure theories – Types of laboratory tests for strength parameters – Strength tests based on drainage conditions – Strength envelops – Shear strength of sands – Dilatancy – Critical void ratio – Liquefaction – Shear strength of clays.