Design of Electrical Transmission Lines Structures and Foundations by Sriram Kalaga and Prasad Yenumula
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Design of Electrical Transmission Lines Structures and Foundations by Sriram Kalaga and Prasad Yenumula

I am honored and thankful to be asked to write the foreword to this timely textbook, Design of Electrical Transmission Lines – Structures and Foundations. As an industry, we find ourselves at a crossroads. Many industry professionals are nearing retirement as part of the large ‘baby boom’ generation. They will take decades of knowledge and experience with them. Engineering curricula typically do not include electric utility design courses. We learn the basic engineering principles and then, over time, learn how to apply these facts to our industry. As this transition occurs, many of us are concerned about the need for effective and timely knowledge transfer. How can we pass on this critical knowledge to the next generation?

Design of electrical transmission structures requires proper application of fundamental theories of strength of materials, engineering mechanics, structures, soil mechanics and electrical engineering. Knowledge of applicable industry codes and standards is also necessary as they govern the design process. Traditionally, engineers learn the design process on the job, from their mentors, colleagues, at seminars and workshops, and from utility proprietary manuals and other tools. In the absence of a specific reference book that contains this guidance, the learning process can take years. I am encouraged that Sriram Kalaga and Prasad Yenumula have created this textbook in an attempt to bridge that gap. They have taken their many combined years of experience and put them into a single location for the benefit of the rest of us.

Design of Electrical Transmission Lines – Structures and Foundations will provide industry professionals a valuable resource from which to learn. The detailed overview and design instruction, along with references to applicable standards, will help younger industry professionals more quickly understand the basic design principles. I also believe readers will benefit from the many detailed sample problems, design tables, hardware information and line design illustrations. I trust that you will find value in spending time in this book. It will prove to be a valuable resource in your electric utility career!

The authors of “Design of Electrical Transmission Lines – Structures and Foundations’’ have created a unique engineering book for utility engineers. The subject is presented from the viewpoint of civil engineers; however their presentation can greatly benefit anyone involved with engineering of transmission lines. The main purpose of this book is to assist utility engineers in understanding basic design of transmission line structures and foundations. For young engineers it is a great resource for learning, understanding, and applying the engineering principles required to successfully design transmission line structures and foundations. While for the mature engineer the book becomes a quick reference which can be used to refresh their knowledge of a particular subject.

Many of the theories and methods in the book have sample problems to aid in their understanding. These sample problems also provide excellent “blueprints’’ for applying these theories and methods in real life applications. Illustrations, photos, charts, and graphs are also effectively used throughout the book to define the subject matter. It has been an honor to write a foreword to this book written by Sriram Kalaga and Prasad Yenumula. The book’s comprehensive engineering approach reflects their combined knowledge and experience of transmission lines. May this book prove enjoyable and valuable to utility engineers for many years!

Electrical power is now an indispensable requirement for the comfort, safety and welfare of mankind in the 21st century. No matter what the source of power generation is, its final destination is the abode of the individual consumer – a person, industry, machine or organization. This book deals with the how, what and where the many engineering disciplines collaborate to make that journey happen. The design of overhead electrical transmission lines is a unique activity which involves direct or indirect contributions of many other disciplines, both engineering and others.

The word “electrical’’ just implies that the main focus is transmittal of electrical power or energy from one point to another. But that movement of power also requires conductors, insulators, supporting structures (or pylons), connecting hardware, good anchorage into ground while satisfying myriad technical rules, governmental regulations and guidelines aimed at safety and reliability. This calls for the involvement of civil engineers (structural and geotechnical), electrical engineers, surveyors (analog and digital), drafters (CAD) and finally construction contractors who build what we design. Since transmission lines often begin and end at substations, specialists in substation design and protection and control are also involved.

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