Bearing Capacity of Foundations:
Introduction, Types of shallow foundations, General reqirements of foundations, Modes of shear failure, Bearing capacity equations (Terzaghi’s, Meyerhof’s, Brinch Hansen’s and IS code method), Footings with eccentric loadings, Effect of water table on bearing capacity. Bearing capacity from SPT, SCPT, DCPT and Field plate load tests. Evaluation from in-situ tests codal recommendations. Numerical Problems.
Bearing Capacity for footings on homogeneous and layered soils, slopes, Bearing capacity of foundations with uplift or tension forces, Bearing capacity of rock, Bearing capacity based on Building codes (Presumptive pressure), Safety factors in Foundation Design, Numerical Problems.
Settlement analysis:
Immediate settlement, Consolidation settlement and Secondary consolidation settlements, With codal provisions. Numerical problems. Contact pressure under footings – Contact pressure under rigid rectangular footing, strip foundation, rigid circular footing, Principles of footing design, Design of non – rigid combined footings. Numerical problems.
Foundations on sanitary landfill site, recent refuge fills, residual soils, permafrost and adjoining to the river bed. Proportionating of shallow footings, Introduction to special foundations, Foundation design in relation to ground movements.
Design of Raft foundations- types of rafts, Bearing capacity of mat foundations, Mat settlements, Modulus of subgrade reactions for mats and subgrades, Numerical problems. Allowable soil pressures for rafts in cohesionless and cohesive soils, Design of raft by rigid beam method and Winkler method, Solution based on elastic half space and based on elastic theory.