The wood pole is a relatively basic, yet robust and useful, structural resource, dating back to antiquity in usage and maintaining significance today as it numbers million in the United States. Despite the objective simplicity of the common natural material, guidance for defining the quality, dimensions, and basic engineering data of preserved wood poles has been in use for the past century, undergoing refinement throughout the years to assure reliable performance of contemporary utility poles. ANSI O5. Manufacturing requirements, including bark removal, sawing, trimming, shaving, and marking, are also designated in the standard.
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This standard provides minimum specifications for the quality and dimensions of wood poles that are to be used as single-pole utility structures. The poles described herein are considered as simple cantilever members subject to transverse loads only. Fiber strength values, provided as a basis for determining pole class sizes, apply only to poles that meet or exceed the minimum quality specifications.
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PLS-POLE ANSI Wood Pole Component Files
We strongly suggest that Annex A be read and understood before designing a wood pole structure under this standard. These strength reduction factors will not be used on poles 55 feet and shorter as per Annex A. Should you need to use one of these three materials, you must determine the correct properties for your jurisdictions and incorporate them into your library. Finally, the density of wood poles can vary greatly. Not only does the actual species of wood vary, but the moisture content, drying process, and treatment are all factors that can result in large density variations.
ANSI O5.1-2017 – Wood Poles – Specifications and Dimensions