JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

• To Plan Soil exploration programme for civil Engineering Projects
• To check the stability of slopes
• To determine the lateral earth pressures and design retaining walls
• To determine the Bearing capacity of Soil
• To design pile group foundation

Course Outcomes

At the end of the course the student will able to

• understand the principles and methods of Geotechnical Exploration
• decide the suitability of soils and check the stability of slopes
• calculate lateral earth pressures and check the stability of retaining walls
• analyse and design the shallow and deep foundations

UNIT - I

SOIL EXPLORATION: Need – methods of soil exploration – boring and sampling methods – penetration tests – plate load test– planning of soil exploration programme, Bore logs and preparation of soil investigation report.

UNIT - II

SLOPE STABILITY: Infinite and finite earth slopes – types of failures – factor of safety of infinite slopes – stability analysis by Swedish slip circle method, method of slices, Bishop’s Simplified method of slices – Taylor’s Stability Number- stability of slopes of earth dams under different conditions.

UNIT - III

EARTH PRESSURE THEORIES: Active, Passive and at rest soil pressures Rankine’s theory of earth pressure – earth pressures in layered soils – Coulomb’s earth pressure theory.

RETAINING WALLS: Types of retaining walls – stability of gravity and cantilever retaining walls against overturning, sliding and, bearing capacity, filter material for drainage.

UNIT - IV

SHALLOW FOUNDATIONS - Types - choice of foundation – location and depth - safe bearing capacity – shear criteria – Terzaghi’s, and IS code methods - settlement criteria – allowable bearing pressure based on SPT N value and plate load test – allowable settlements of structures.

UNIT - V

PILE FOUNDATION: Types of piles – load carrying capacity of piles based on static pile formulae – dynamic pile formulae – Pile Capacity through SPT results - pile load tests - load carrying capacity of pile groups in sands and clays – Settlement of pile groups – negative skin friction

TEXT BOOKS:

• 1. Basic and Applied Soil Mechanics by Gopal Ranjan & ASR Rao, New age International Pvt . Ltd, New Delhi
• 2. Principals of Geotechnical Engineering by Braja M. Das, Cengage Learning Publishers.

REFERENCES:

• 1. Soil Mechanics and Foundation Engineering by VNS Murthy, CBS Publishers and Distributors.
• 2. Geotechnical Engineering Principles and Practices by Cuduto, PHI International. R18 B.TECH CIVIL ENGG. III YEAR
• 3. Analysis and Design of Substructures – Swami Saran, Oxford and IBH Publishing company Pvt Ltd
• 4. (1998).
• 5. Geotechnical Engineering by S. K.Gulhati & Manoj Datta – Tata Mc.Graw Hill Publishing company New Delhi. 2005.
• 6. Bowles, J.E., (1988) Foundation Analysis and Design – 4th Edition, McGraw-Hill Publishing company, Newyork. R18 B.TECH CIVIL ENGG. III YEAR