Civil Engineering Department

Soil Mechanics803440-3

Introduction

Lecture 1Week 1

2014/2015

UMM AL-QURA UNIVERSITY

Content

Part I

• Course Description

• Lecturer Information

• Course Outline

• Text Book and Recommended Readings

• Lab Schedule

• Activities

• Assessment

Part II

• Definitions

Course Description

Soil Mechanics803440-3

3 Credit Hours2 Theoretical

1 Practical

Department Requirement

Course Description

Soil Mechanics803440-3

Prerequisite for: Foundation Engineering

Prerequisite: Mechanics of Materials

Course Outline

Date Topic

1st WeekIntroduction

Grain Size Analysis

2nd WeekWeight-Volume Relationships,Plasticity, and Structure of Soil

Atterberg's Limits

3rd WeekEngineering Classification of Soil

Revision - Problems Solving

Course Outline

Date Topic

4th WeekSoil Compaction

Permeability

5th WeekSeepage

Revision - Problems Solving

6th Week Midterm

Course Outline

Date Topic

7th WeekIn Situ Stresses

Stresses in a Soil Mass

8th WeekRevision - Problems Solving

Compressibility of Soil

9th WeekCompressibility of Soil

Shear Strength of Soil

Course Outline

Date Topic

10th WeekShear Strength of Soil

Revision - Problems Solving

11th Week Final Exam

Braja M. Das

Principles of Geotechnical Engineering

FIFTH EDITION

2002

Bill Stenquist

Text Book

R. F. Craig

Soil Mechanic

SIXTH EDITION

1997

Spon Press

Recommended Readings

. القصبى. الفتاح عبد السيد د أ

التربة ميكانيكا

األولى الطبعة

1999

مصر - العلمية الكتب دار

Recommended Readings

Lab Schedule

Date Experiment

1st Week Sieve Analysis, Hydrometer Analysis

2nd WeekDetermination of Moisture Content, Specific Gravity

3rd WeekLiquid Limit Test, Plastic Limit Test, Shrinkage Limit Test

4th WeekModified Proctor Compaction TestDetermination of Field Unit Weight of Compaction by Sand Cone Method

5th Week Falling Head Permeability Test in Sand

6th Week Midterm

Date Experiment

7th Week Unconfined Compression Test

8th Week Consolidation Test

9th Week Direct Shear Test on Sand

10th Week Revision - Problems Solving

11th Week Final Exam

Lab Schedule

Activities

Lectures• Theory and Principles

• Examples

• Group Work

• Quizzes

• Software, Case Studies, and Applications

Lab

Eight Experiments

Assignments

Assessment

Mid-term Exam 25%

Final Exam 50%

Assignments 10%

Quizzes 5%

Lab evaluation 10%

100%

Questions?!

The uncemented aggregate of mineral grains and decayed organic matter (solid particles) with liquid and gas in the empty spaces between the solid particles.

Soil for Engineering Purposes

Soil consists of the thin layers of the earth’s crust formed by surface weathering that are able to support plant life.

Agronomy definition:

Definitions

Solids

Definitions

Liquid

Gas

The branch of science that deals with the study of the physical properties of soil and the behavior of soil masses subjected to various types of forces.

Soil mechanics

Definitions

The application of the principles of soil mechanics to practical problems.

The subdiscipline of civil engineering that involves natural materials found close to the surface of the earth. It includes the application of the principles of soil mechanics and rock mechanics to the design of foundations, retaining structures, and earth structures.

Soils engineering

Geotechnical engineering

Definitions

Soil Properties

Physical Properties Mechanical Properties

Gradation and Structure

Soil-Water Relationships

Atterberg’s Limits

Soil Compaction

Permeability

Compressibility

Shear Strength

Bearing Capacity

ClaySilt Sand Gravel

Cobb

les

Boul

ders

Fine Med. Coarse Fine Med. Coarse Fine Med. Coarse

0.002

0.006 0.02

0.06

0.2 0.6

2

6 20

60 200

(mm)

Soil-Particle Size

ClaySilt Sand Gravel

Cobb

les

Boul

ders

Fine Med. Coarse Fine Med. Coarse Fine Med. Coarse

0.002

0.006 0.02

0.06

0.2 0.6

2

6 20

60 200

(mm)

Summery

• Engineering Definition for Soil

• Soil Mechanics: Physical >> Mechanical

• Soil Gradation: Clay, Silt, Sand, Gravel

Next Lecture

• Sieve Analysis• Hydrometer Analysis

Grain Size Analysis