Table of Contents
1 Cover
6 Preface
8 1 Introduction 1.1 Scope 1.2 Background
9 2 Pole Structures 2.1 General 2.2 Wood Pole Strength 2.3 Loads 2.4 Embedment Depth 2.5 Guying 2.6 Column Buckling 2.7 Grounding and Bonding Notes
10 3 Pole Installation and Maintenance 3.1 Pole Placement 3.2 Guys and Anchors 3.3 Pole Maintenance
11 4 Wires, Conductors, and Cables 4.1 Categories 4.2 Messenger Wire/Strand 4.3 Electric Supply (Power) Cables 4.4 Communications Cables 4.5 Wireless Attachments
12 5 Cable Installation 5.1 Conductor and Cable Placement 5.2 Lashing Operation 5.3 Overlashing Notes
13 6 NESC® Requirements (Strength and Loading) 6.1 National Electrical Safety Code (NESC) 6.2 Loading Requirements 6.3 Strength Requirements 6.4 Wire Tensions 6.5 Guyed Poles 6.6 Extreme Wind Loads (“60 ft Limit”) 6.7 Allowable Deterioration 6.8 Overlashed Cables 6.9 Software Tools and Pole Loading Analysis Notes
14 7 NESC® Requirements (Clearances) 7.1 Clearances 7.2 Clearance Zones 7.3 Clearances Above Surfaces and Buildings 7.4 Clearances Between Wires 7.5 Overlashed Cables Note
15 8 Principles of Wire Sag 8.1 Catenary 8.2 Initial and Final Sag 8.3 Sag–Tension Relationship 8.4 Determining Change in Sag (and Tension) 8.5 Ruling Span 8.6 Point Load Note
16 9 General Order 95 (California) 9.1 General Order 95 (GO 95) 9.2 Loading Requirements 9.3 Strength Requirements 9.4 Clearances
17 10 Examples 10.1 Purpose 10.2 Tangent Line 10.3 Line Angle 10.4 Line Angle – Buckling Consideration 10.5 Additional Attachment 10.6 Summary Note
18 Appendix A: Properties of Messenger Strands
19 Appendix B: Wireless Attachments
20 Appendix C: Extreme Wind and Extreme Ice Loadings
21 Appendix D: Solution of Cubic Equation Note