The term design means to plan for the construction of an object or the formulation of a plan for the satisfaction of needThe term machine design deals with the design of machines, their mechanisms and elements.Mechanical engineering design refers to the selection of material, design of component and the system of mechanical nature.This book through its careful explanations of concepts and its use of numerous practical examples, figures and sketches, bridges the gap between the knowledge and proper application of that knowledge and proper application of that knowledge.This book also gives information about the types of stress, nature of stresses in machine elements and corresponding types of load.