ANNA UNIVERSITY, CHENNAI

AFFILIATED INSTITUTIONS

R -  2008

B.E. CIVIL ENGINEERING

SYLLABUS

CE2305                               FOUNDATION ENGINEERING                                               LT P C

3  0 0 3

OBJECTIVE

At the end of this course student acquires the capacity to assess the soil condition at a given location in order to sugest suitable foundation and also gains the knowledge to design various foundations.

 

UNIT I             SITE INVESTIGATION AND SELECTION OF FOUNDATION                            9

Scope and objectives – Methods of exploration-auguring and boring – Water boring and rotatory drilling – Depth of boring – Spacing of bore hole - Sampling – Representative and undisturbed sampling – sampling techniques – Split spoon sampler, Thin tube sampler, Stationary piston sampler  – Bore log report – Penetration tests (SPT and SCPT) – Data interpretation (Strength parameters and Liquefaction potential) – Selection of foundation based on soil condition.

 

UNIT II            SHALLOW FOUNDATION                                                                                   9

Introduction – 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 – problems - Bearing Capacity from insitu tests (SPT, SCPT and plate load) – Allowable bearing pressure, Settlement – Components of settlement – Determination of settlement of foundations on granular and clay deposits – Allowable settlements – Codal provision – Methods of minimising settlement, differential settlement.

 

UNIT III           FOOTINGS AND RAFTS                                                                                      9

Types of foundation – Contact pressure distribution below footings and raft - Isolated and combined footings – Types and proportioning - Mat foundation– Types, applications uses and proportioning-- floating foundation.

 

UNIT IV          PILES                                                                                                                    9

Types of piles and their function – Factors influencing the selection of pile – Carrying capacity of single pile in granular and cohesive soil - Static formula - dynamic formulae (Engineering news and Hiley's) – 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 – Forces on pile caps – under reamed piles – Capacity under compression and uplift.

 

UNIT V           RETAINING WALLS                                                                                             9

Plastic equilibrium in soils – active and passive states – Rankine's theory – cohesionless and cohesive soil  - Coloumb's wedge theory – condition for critical failure plane - Earth pressure on retaining  walls  of  simple  configurations  –  Graphical  methods  (Rebhann  and  Culmann)  - pressure on the wall due to line load – Stability of retaining walls.

 

TEXT BOOKS

TOTAL: 45 PERIODS