This book has been prepared for mechanical engineering students as a complementary book to be used in the course of "Mechanical Engineering Design or Design of Machine Elements. Methodic approaches for the solutions of the problems are provided in order to improve the efficiency of teaching Machine Elements Course. Most of the problems are selected from previous years' examinations sheets. Owing to an increased volume of the contents of Mechanical Engineering Design. it is considered to be more practical and usable to present the book in two parts. This first part is devoted to the subjects of Machine Elements I : stress analysis, deflection analysis, design for static strength, design for fatigue strength, tolerances and fits, design of power screws, design of bolted joints, design of riveted joints and design of welded joints. The subjects are treated in seperate sections and for a beter understanding of the solution of the problems. they are incorporated with introductory sections in which a brief summary of design and/or selection principles of the respective elements are given