Chapter 23

Transmission Line Structures

23.1 Transmission Line Design Practice 23-1

Transmission Line Support Structures • Transmission Line Foundations • Factors Influencing Structure and Foundation Selection

23.2 Current Design Practices 23-6

Deterministic Design Approach • Reliability-Based Design Approach • Security Level

23.3 Foundation Design 23-10

Subsurface Investigation • Foundation Geotechnical Design Parameters • Foundation Design Models • Foundation Reliability-Based Design

References23-14

Robert E. Nickerson

Consulting Engineer

Peter M. Kandaris

Salt River Project

Anthony M. DiGioia, Jr.

DiGioia, Gray and Associates, LLC

An overhead transmission line (OHTL) is a complex electric/mechanical system designed to transfer electricity ...

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