UNIT – 1
Preview of Geotechnical field problems in Civil Engineering, Soil formation, transport
and deposit, Soil composition, Basic definitions, Clay minerals, Index properties, Particle
size analysis, Soil classification.
UNIT – 2
Soil-water systems, capillarity-flow, Darcy’s law, permeability, field and lab tests,
piping, quick sand condition, seepage, flow nets, flow through dams, filters.
Soil compaction, water content – dry unit weight relationships, OMC, field compaction
control, Proctor needle method.
UNIT – 3
Effective stress principle, Stresses due to applied loads, Boussinesq and Westergaard
Compressibility and consolidation characteristics, Rate of consolidation, Terzaghi’s one
dimensional theory of consolidation and its applications, Over Consolidation Ratio,
determination of coefficient of consolidation and secondary consolidation (creep),
consolidation under construction loading.
UNIT – 4
Shear strength - direct & triaxial shear tests, Mohr – Coulomb strength criterion, drained,
consolidated, undrained and unconsolidated tests, strength of loose and dense sands,
Normally Consolidated and Over Consolidated soils, dilation, pore pressure, Skempton’s
coefficient. Earth pressure theories, Coulomb and Rankine approaches for c-φ soils, smooth
andrough walls, inclined backfill.
UNIT – 5
Characterization of ground, site investigations, groundwater level, methods of drilling,
sampling, in situ test, SPT, CPT, DCPT
Types of foundations – shallow / deep, isolated, combined, mat, etc., Definitions, Bearing
capacity of shallow foundations (Terzaghi analysis), general, local and punching shear
failures, corrections for size, shape, depth, water table, Bearing capacity by consolidation
method, insitu bearing capacity determination, Provisions of IS code of practice, selection
of depth of footing, eccentrically loaded footings.