CE8591 – NOTES & QP
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CE8591 – SYLLABUS
UNIT I SITE INVESTIGATION AND SELECTION OF FOUNDATION
Scope and objectives — Methods of exploration — Auguring and boring — Wash boring and rotary drilling — Depth and spacing of bore holes — Soil samples — Representative and undisturbed — Sampling methods — Split spoon sampler, Thin wall sampler, Stationary piston sampler — Penetration tests (SPT and SCPT) — Data interpretation — Strength parameters — Bore log report and Selection of foundation.
UNIT II SHALLOW FOUNDATION
Location and depth of foundation — Codal provisions — Bearing capacity of shallow foundation on homogeneous deposits — Terzaghi?s formula and BIS formula — Factors affecting bearing capacity — Bearing capacity from in-situ tests (SPT, SCPT and plate load) — Allowable bearing pressure — Seismic considerations in bearing capacity evaluation. Determination of Settlement of foundations on granular and clay deposits — Total and differential settlement — Allowable settlements — Codal provision — Methods of minimizing total and differential settlements.
UNIT III FOOTINGS AND RAFTS
Types of Isolated footing, Combined footing, Mat foundation — Contact pressure and settlement distribution — Proportioning of foundations for conventional rigid behaviour — Minimum thickness for rigid behaviour — Applications — Compensated foundation — Codal provision
UNIT IV PILE FOUNDATION
Types of piles and their functions — Factors influencing the selection of pile — Carrying capacity of single pile in granular and cohesive soil — Static formula — Dynamic formulae (Engineering news and Hileys) — Capacity from insitu tests (SPT and SCPT) — Negative skin friction — Uplift capacity-Group capacity by different methods (Feld?s rule, Converse — Labarra formula and block failure criterion) — Settlement of pile groups — Interpretation of pile load test (routine test only), Under reamed piles — Capacity under compression and uplift — Cohesive — expansive — non expansive — Cohesionless soils — Codal provisions.
UNIT V RETAINING WALLS
Plastic equilibrium in soils — Active and passive states — Rankine?s theory — Cohesionless and cohesive soil — Coulomb?s wedge theory — Condition for critical failure plane — Earth pressure on retaining walls of simple configurations — Culmann?s Graphical method — Pressure on the wall due to line load — Stability analysis of retaining walls — Codal provisions.