Design of electrical transmission lines. Volume 1 [electronic resource] : structures and foundations / Sriram Kalaga, Prasad Yenumula.

Cover; Half Title; Dedication; Title Page; Copyright Page; Table of contents; Foreword; Foreword; Preface; Acknowledgments; About the authors; Special thanks; Notice to the reader; List of abbreviations; List of figures; List of tables; Conversion factors; 1 Introduction; 1.1 History of electrical transmission; 1.2 Transmission structures; 1.3 Current state of the art; 1.4 Design processes; 1.5 Scope of this book; 2 General design criteria; 2.1 Climate; 2.1.1 Extreme wind; 2.1.2 Combined ice and wind district loading; 2.1.3 Extreme ice with concurrent wind; 2.1.4 High intensity winds. 2.1.5 Pollution2.1.6 Temperature; 2.2 Electrical design; 2.2.1 Regulatory codes; 2.2.2 Right of way; 2.2.3 Clearances; 2.2.3.1 Insulator swing; 2.2.4 Shielding; 2.2.5 Lightning performance and grounding; 2.2.6 Insulation requirements; 2.2.7 Conductor operating temperature; 2.2.8 Corona and field effects; 2.2.9 EMF and noise; 2.2.10 Galloping; 2.2.11 Ampacity; 2.3 Structural design of transmission lines; 2.3.1 Structure spotting; 2.3.2 Ruling spans; 2.3.3 Sags and tensions; 2.3.3.1 Galloping; 2.3.3.2 Tension limits; 2.3.4 Insulators; 2.3.5 Hardware; 2.3.6 Guy wires and anchors. 2.4 Structural analysis2.4.1 PLS-Pole"! 2.4.2 Tower"! 2.4.3 PLS-CADD"! 2.4.4 Load and strength criteria; 2.4.4.1 Structural design criteria; 2.4.4.2 Weather cases; 2.4.4.3 Load cases; 2.5 Foundation design criteria; 2.6 Constructability; 2.6.1 Construction considerations; 2.6.2 Environmental constraints; 2.6.3 Regulatory issues; 2.6.4 Public acceptance; 2.7 Codes and standards for line design; Problems; 3 Structural analysis and design; 3.1 Structure materials; 3.1.1 Wood; 3.1.1.1 Laminated wood; 3.1.2 Steel; 3.1.2.1 Wood equivalent steel poles; 3.1.3 Concrete; 3.1.4 Lattice towers. 3.1.5 Composite3.2 Structure families; 3.2.1 Structure models; 3.2.1.1 Insulator attachment to structure; 3.2.2 Structure types; 3.2.2.1 H-Frames; 3.2.2.2 Guyed structures; 3.3 Structure loads; 3.3.1 Load cases and parameters; 3.3.2 Load and strength factors; 3.3.3 Point loads; 3.3.4 Loading schedules; 3.3.5 Deflection limits; 3.3.6 P-Delta analysis; 3.4 Structural analysis; 3.4.1 Single tangent poles; 3.4.2 H-Frames; 3.4.3 Angle structures; 3.4.4 Deadends; 3.4.4.1 Wood pole buckling; 3.4.5 Lattice towers; 3.4.5.1 End restraints; 3.4.5.2 Crossing diagonals; 3.4.6 Substation structures. 3.4.6.1 Seismic considerations3.4.6.2 Deflection considerations; 3.4.7 Special structures; 3.4.7.1 Anti-cascade structures; 3.4.7.2 Long span systems; 3.4.7.3 Air-break switches; 3.4.7.4 Line crossings; 3.5 Structure design; 3.5.1 Strength checks; 3.5.1.1 Wood poles; 3.5.1.2 Steel poles; 3.5.1.3 Lattice towers; 3.5.1.4 Concrete poles; 3.5.1.5 Composite poles; 3.5.2 Assemblies and parts; 3.5.3 Framing drawings; 3.5.3.1 69 kV family; 3.5.3.2 161 kV structures; 3.5.3.3 345 kV structures; 3.5.3.4 Distribution structures; 3.5.3.5 Special structures; 3.5.3.6 Hardware; Problems; 4 Foundation design.

This book covers structural and foundation systems used in high-voltage transmission lines, conductors, insulators, hardware and component assembly. In most developing countries, the term "transmission structures" usually means lattice steel towers. The term actually includes a vast range of structural systems and configurations of various materials such as wood, steel, concrete and composites. This book discusses those systems along with associated topics such as structure functions and configurations, load cases for design, analysis techniques, structure and foundation modeling, design deliverables and latest advances in the field. In the foundations section, theories related to direct embedment, drilled shaf ts, spread foundations and anchors are discussed in detail. Featuring worked out design problems for students, the book is aimed at students, practicing engineers, researchers and academics. It contains beneficial information for those involved in the design and maintenance of transmission line structures and foundations. For those in academia, it will be an adequate text-book / design guide for graduate-level courses on the topic. Engineers and managers at utilities and electrical corporations will find the book a useful reference at work.