JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-Requisites

Engineering Geology, Applied Mechanics, Fluid Mechanics

Course Objectives

To enable the student to study the properties of soil and to determine the

behaviour soil under various conditions and loads.

Course Outcomes

At the end of the course, the student will be able to:

• Understand the mechanism Behaviour of Soil for different loads
• and from Soil Condition will be able to determine properties of soil

UNIT - I

Introduction: Soil formation and structure – moisture content – Mass- volume relationship – Relative density. Index Properties Of Soils: Grain size analysis – Sieve–

UNIT - II

Permeability: Soil water – capillary rise – flow of water through soils – Darcy’s law- permeability – Factors affecting permeability – laboratory determination of coefficient of permeability –Permeability of layered soils – In-situ permeability tests (Pumping in & Pumping out test). Effective Stress & Seepage Through Soils: Total, neutral and effective stress – principle of effective stress - quick sand condition – Seepage through soils – Flownets: Characteristics and Uses.

UNIT - III

Stress Distribution In Soils: Boussinesq’s and Westergaard’s theories for point load, uniformly loaded circular and rectangular areas, pressure bulb, variation of vertical stress under point load along the vertical and horizontal plane, and Newmark’s influence chart for irregular areas. Compaction: Mechanism of compaction – factors affecting compaction effects of compaction on soil properties – Field compaction Equipment – compaction quality control.

UNIT - IV

Consolidation: Types of compressibility – Immediate Settlement, primary consolidation and secondary consolidation - stress history of clay; e-p and e-log(p) curves – normally consolidated soil, over consolidated soil and under consolidated soil - preconsolidation pressure and its determination - Terzaghi’s 1-D consolidation theory – coefficient of consolidation: square root time and logarithm of time fitting methods - computation of total settlement and time rate of settlement.

UNIT - V

Shear Strength Of Soils: Importance of shear strength – Mohr’s– Coulomb Failure theories – Types of laboratory tests for strength parameters – strength tests based on drainage conditions – strength envelops – Shear strength of sands - dilatancy – critical void ratio.

R16 B.TECH CIVIL & ENV. ENGG.

TEXT BOOKS:

• 1. Principals of Geotechnical Engineering by Braja M. Das, Cengage Learning Publishers, 8th Edition, (2014).
• 2. Geotechnical Engineering Principles and Practices by Cuduto, PHI International
• 3. Basic and Applied Soil Mechanics by Gopal Ranjan & ASR Rao, New age International Pvt. Ltd.

REFERENCES:

• 1. Geotechnical Engineering by Manoj Dutta & Gulati S.K – Tata McGraw Hill Publishers New Delhi.
• 2. Soil Mechanics and Foundation Engineering by VNS Murthy, CBS Publishers and Distributors.
• 3. Geotechnical Engineering by C. Venkataramiah, New age International Pvt. Ltd, (2002). R16 B.TECH CIVIL & ENV. ENGG.