CE2251 – SOIL MECHANICS April/May – 2011 Previous Sem Question papers

CE2251 – SOIL MECHANICS April/May – 2011 Previous Sem Question papers

Sem: Fourth

Subject Name: Soil Mechanics

Subject Code: CE2251

Department: Civil Engineering

Download:CE2251 – SOIL MECHANICS April/May – 2011 Previous Sem Question papers

Syllabus For CE2251

UNIT I INTRODUCTION 10
Nature of Soil – Problems with soil – phase relation – sieve analysis – sedimentation analysis -
Atterberg limits – classification for engineering purposes – BIS Classification system – Soil
compaction – factors affecting compaction – field compaction methods and monitoring
UNIT II SOIL WATER AND WATER FLOW 8
Soil water – Various forms – Influence of clay minerals – Capillary rise – Suction – Effective
stress concepts in soil – Total, neutral and effective stress distribution in soil – Permeability -
Darcy’s Law- Permeability measurement in the laboratory – quick sand condition – Seepage -
Laplace Equation – Introduction to flow nets -properties and uses – Application to simple
problems.
UNIT III STRESS DISTRIBUTION, COMPRESSIBILITY AND SETTLEMENT 10
Stress distribution in soil media – Boussinesque formula – stress due to line load and Circular and rectangular loaded area – approximate methods – Use of influence charts – Westergaard equation for point load – Components of settlement – Immediate and consolidation settlement -
Terzaghi’s one dimensional consolidation theory – governing differential equation – laboratory consolidation test – Field consolidation curve – NC and OC clays – problems on final and time rate of consolidation

UNIT IV SHEAR STRENGTH 9
Shear strength of cohesive and cohesionless soils – Mohr – Coulomb failure theory – Saturated
soil – Strength parameters – Measurement of shear strength, direct shear, Triaxial compression,
UCC and Vane shear tests -Types of shear tests based on drainage and their applicability -
Drained and undrained behaviour of clay and sand – Stress path for conventional triaxial test.
UNIT V SLOPE STABILITY 8
Slope failure mechanisms – Modes – Infinite slopes – Finite slopes – Total and effective stress
analysis – Stability analysis for purely cohesive and C- soils – Method of slices – Modified
Bishop’s method – Friction circle method – stability number – problems – Slope protection
measures.