Chapter
Apr 26, 2012
Are Wood Poles Getting Weaker?
Publication: Electrical Transmission and Substation Structures 2009: Technology for the Next Generation
Abstract
This paper follows the evolution of wood pole design over the last 80 years and an example is used to demonstrate how the relative safety factor has increased. A brief review of the changes in the National Electrical Safety Code (NESC) strength requirements from 1927 to 2007 is presented to show how little it has changed. Technological advances in calculators, computers and computer software make it possible to analyze complex problems. Equations that were once simplified to facilitate computation are now expanded to include components previously ignored. However, the NESC has not adapted to incorporate these changes, resulting in more conservative designs.
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© 2010 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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P.E.
Civil Engineer, The Empire District Electric Co., 602 S. Joplin Ave., Joplin MO 64802. E-mail: [email protected]
P.E.
Civil Engineer, Allgeier, Martin and Associates, Inc., P.O. Box 2627, Joplin MO 64803. E-mail: [email protected]
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.