LRFD Format for Transmission Structures

by Alain H. Peyrot, Univ of Wisconsin, Madison, WI, USA,

Document Type: Proceeding Paper

Part of: Innovations in the Design of Electrical Transmission Structures


The structural design of high voltage electric transmission lines in the US is usually governed by the National Electrical Safety Code (NESC). A simple reliability-based Load and Resistance Factor Design (LRFD) format has been proposed as an alternative or a supplement to the NESC. With the proposed LRFD method, the designer is able to assign relative levels of reliability to different lines, to different structures within one line and to different components within one structure. This paper demonstrates how the LRFD method of design is to be used and it discusses its advantages over more traditional methods.

Subject Headings: Load and resistance factor design | Power transmission | Structural safety | Power transmission lines | Structural reliability | Structural members | Safety | Standards and codes | United States

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