# GITAM University Geotechnical Engineering II Syllabus

UNIT-I:
Shear Strength of Soils : Stress at a point, Mohr circle of stress, Mohr coulomb failure theory shear tests –
shear box, unconfined compression, tri-axial compression tests, field vane shear tests, shear parameters,
types of shear tests in the laboratory based on drainage conditions, shear strength of sands, critical void ratio
and dilatancy, shear strength of clays, total stress analysis and effective stress analysis, Skempton’s pore
pressure coefficients.
UNIT-II:
Shallow foundations: Safe bearing capacity and allowable bearing pressure, Terzaghi’s bearing capacity
equations its modifications for square, rectangular and circular foundation, General and local shear failure conditions. Factors affecting bearing capacity of Soil. Allowable bearing pressure based on N-values.
Bearing capacity from plate load tests. Factors effecting locations of foundation and design considerations of shallow foundations, choice of type of foundations. Foundations on expansive soils.
Settlement analysis : causes of settlement, Computation of settlement, allowable settlement. Measures to reduce settlement.
UNIT-III:
Pile Foundations: Types, Construction, load carrying capacity of single pile – Dynamic Formula, Static
formula, Pile load tests, Load carrying capacity of pile groups, settlement of pile groups, Negative skin
friction.
Caissons : introduction , various forces acting and Types of caissons, box/ open/ pneumatic caissons,
Different shapes and cross sections of well foundations. Different Components of well, Grip length,
problems in well sinking and remedial measures.
UNIT-IV:
Earth Pressure: Types of Earth pressures, Rankines Active and Passive earth pressure, Smooth Vertical
wall with horizontal backfill. Extension to Coloumb’s wedge theory, Rebhann’s graphical method for active
earth pressure. Bulkheads– introduction and Classification. Introduction to ground improvement techniques.
UNIT-V:
Stability Analysis of Slopes: Finite Slopes, Fellinius method of locating critical slip centre, Friction circle method of stability analysis and Taylors stability number, types of failure of finite slopes – Toe, slope and Base failure. Factors influencing Slope Stability.
Note: This course does not cover structural design of foundations.

Reference Books:

1. Shamsher Prakash, Gopal Ranjan and Swami Saran, Analysis, Design of Foundations and Earth retaining Structures, M/S. Saritha Prakashan, Meerut.
2. J. E. Bowles, Foundation Analysis and Design, Mcgraw Hill, Publishers.
3. K.R. Arora, Soil Mechanics and Foundation Engg, Standard Publications, 6th edition, reprint 2005.
4. B.C. Punmia (SI-units), Soil Mechanics & Foundations, Lakshmi Book house, 9th edition, 1985.