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CE 481 Geotechnical Engineering II 1 st Semester 1437/1438 H

CE 481 Geotechnical Engineering II 1 st Semester 1437/1438 H. 1. INTRODUCTION. Instructor : Prof. Dr. Awad Ali Alkarni أ.د . عوض بن علي القرني Office: 2A-6 Office hours: As posted Phone: 467-7041

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CE 481 Geotechnical Engineering II 1 st Semester 1437/1438 H

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  1. CE 481 Geotechnical Engineering II 1st Semester 1437/1438 H

  2. 1. INTRODUCTION

  3. Instructor: Prof. Dr. Awad Ali Alkarniأ.د. عوض بن علي القرني • Office: 2A-6 • Office hours: As posted • Phone: 467-7041 • email: akarni@ksu.edu.sa • Website: http://fac.ksu.edu.sa/akarni • Text Books: • Das, B.M. Principles of Geotechnical Engineering, Latest edition. • Das, B. M. Chapter 8,Principles of Foundation Engineering, Latest edition • Supplementary References: • Holtz, R.D. and Kovacs, W.D. (1981). An Introduction to Geotechnical Engineering, Prentice Hall. • Bowles, J. (1992). Engineering Properties of Soils and their Measurement, McGraw Hill.

  4. Course Contents

  5. Course GradeDistribution Two Mid-term exams 50% Assignments 10% Final Exam 40% Total 100% 1st Mid-term Exam: 9/2/1438H 9/11/2016G 15 minutes after Maghreb Prayer 2nd Mid-term Exam: 30/3/1438H 29/12/2016G 15 minutes after Maghreb Prayer

  6. Branches of Geotechnical Engineering In a general sense, geotechnical engineering has two broad branches: • Soil Engineering • Rock Engineering Soil Engineering is the application of the principles of soil mechanics to practical problems. Soil Mechanics is the branch of geotechnical engineering that deals with the physical properties of soil and behavior of soil masses subjected to various types of forces. It applies the basic principles of mechanics including kinematics, dynamics, fluid mechanics and the mechanics of materials to soils. Rock Engineering is the application of the principles of rock mechanics to practical problems. • The geotechnical commission of the Swedish railways was the first to use the word geotechnical (GEOTEKNISKA), the combination of geology and civil engineering technology.

  7. Applications of Geotechnical Engineering • Foundation Engineering • Tunnel Engineering • Dam Engineering • Retaining Walls • Slope Stability • Geoenvironmental Engineering • Pavement Engineering • Earthquake Engineering • Geosynthetics • Geothermal

  8. Natural slope Slope cut Road Embankment Dam Embankment Tunnel Building foundation Construction on soft soil Supported excavation Offshore foundation • All civil engineering projects (buildings, roads, bridges, dams, tunnels and water tanks ..) are constructed on or in the ground. • Civil engineers are required to assess and avoid the major risks posed by ground conditions.

  9. What do we know so far? • In CE 382 “Geotechnical Engineering I” we introduced Geotechnical engineeringas the sub- discipline of civil engineering that involves the interrelationship between the geological environment and the works of man. The engineer doing this specific type of engineering work is called a "GEOTEHNICAL ENGINEER".. • In the first part of CE 382 “Geotechnical Engineering I” we have the first contact with soils and a number of topics related to soil formations were covered including: • Soil minerals • Types of rocks • Weathering process • Formation of soils

  10. Therefore this part tells us how soil was formed from the parent rocks and accumulated to form soil deposits we encountered in designing any project. • In the second part of CE 382 we laid the ground for soil mechanics and Geotechnical Engineering at large. Important terminology was introduced and the fundamental properties were discussed along with the treatment of some related problems like: • Permeability, • Seepage, • Principle of effective stress, • Induced stresses in soil masses.

  11. To be more precise you learned: • Phase relations • Consistency limits and indices • Classification of soils • Soil compaction • Flow through soils (permeability and seepage) • Principle of effective stress • Stresses in soil masses Where does CE 481 fit? With what we have learned in CE 380 and CE 382 as a background, we now can go to the discussion of the fundamental behavior of soils, particularly its strength and deformation and then applying this in the solution of some practical problems of which in this course we will cover: • Slope stability • Lateral earth pressures • Retaining walls.

  12. Geo-engineering at KSU CE 382 Geotechnical Engineering I CE 380 Soil Mechanics Laboratory CE 481 Geotechnical Engineering II CE 483 Foundation Engineering Elective Courses: • CE 484 Deep Foundations • CE 485 Introduction to Rock Mechanics • CE 486 Improvement of Geotechnical Engineering Materials • CE 487 Geotechnical Engineering in Arid Regions • CE 488 Selective Topics in Geotechnical Engineering PostgraduateM.Sc. : CE 581 to CE 589 Ph.D. : CE 681 to CE 689

  13. Course contents Compressibility of soils Shear strength of soils Slope stability Lateral earth pressures Retaining walls

  14. Compressibility of Soils

  15. Compressibility of Soils • Settlements at working loads must not cause damage, nor adversely affect the serviceability of the structure. • Possible settlements: Uniform, Differential, Immediate, and Long-term consolidation settlement.

  16. Shear Strength of Soil

  17. Slope Stability

  18. retaining wall Lateral earth pressure and Retaining Structures

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