Syllabus - Foundation Engineering (CE 802(B))

Selection of foundation and Sub-soil exploration/investigation

Types of foundation, Factors affecting the selection of type of foundations, Steps in choosing types of foundation based on soil condition. Objectives and planning of exploration program, methods of exploration-wash boring and rotary drilling-depth of boring, Soil samples and soil samplers-representative and undisturbed sampling, Field penetration tests: SPT, SCPT, DCPT. Introduction to geophysical methods, Bore log, report writing.

Shallow Foundation

Introduction, significant depth, design criteria, modes of shear failures. Detail study of bearing capacity theories (Prandtl, Rankine, Terzaghi, Skempton, Meyerhof), Bearing capacity determination using IS Code. Settlement, components of settlement & its estimation, permissible settlement, Proportioning of footing for equal settlement, allowable bearing pressure. Bearing capacity from in-situ tests (SPT, SCPT, PLATE LOAD), Factors affecting bearing capacity, Contact pressure under rigid and flexible footings. Floating foundation.

Pile foundations

Introduction, Load transfer mechanism, Types of piles and their function, Factors influencing selection of pile, their method of installation and their load carrying characteristics for cohesive and granular soils, Piles subjected to vertical loads- pile load carrying capacity from static formula, dynamic formulae (ENR and Hiley), Pile load test, Pile group: carrying capacity, efficiency and settlement. Negative skin friction.

Foundations on problematic soil & Introduction to Geosynthetics

Significant characteristics of expansive and collapsible soils, footing on such soils, Problems and preventive measures. Under- reamed pile foundation-its concept, design & field installation. Introduction to geosynthetics-materials, types, functions and uses.

LATERAL EARTH PRESSURE

Active, Passive and Earth pressure at rest. Rankine’s theory of earth pressure, Earth pressures in layered soils, Coulomb’s earth pressure theory, Culmann’s graphical method. RETAININGWALLS: Types of retaining walls- stability of retaining walls against overturning, sliding, bearing capacity and drainage from backfill. Reinforced earth retaining walls.