Self-supported Wood Pole Fixity at ANSI Groundline
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VIEW THE ORIGINAL ARTICLEPublication: Practice Periodical on Structural Design and Construction
Volume 7, Issue 4
Abstract
Most utility engineers in the United States use the American National Standard for Wood Poles, American National Standards Institute (ANSI) 05.1, to determine the dimensional properties of different species of wood poles. ANSI 05.1 defines a groundline distance from the butt for each pole height for use when a definition of groundline is necessary in order to apply requirements relating to scars, straightness, and likewise. In addition, the groundline distance is used to determine the horizontal load capacity of each class of pole. This paper reviews the adequacy/fixity for different pole heights and species with setting depths based on the ANSI 05.1 groundline location in soils with different properties. The effects on the pole setting depths of backfill diameter and strength as well as groundline forces are also discussed.
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References
American National Standards Institute (ANSI). (1992). “Specifications and dimensions for wood poles.” 05.1, New York.
CAISSON program—Version 2. (1993). Power Line Systems, Madison, Wis.
Davisson, M. T., and Shamsher, P. (1963). “A review of soil-pole behavior.” Transportation Research Record 39, Transportation Research Board, Washington, D.C.
FAD—Version 3. (1997). Foundation Analysis and Design Program, TLWorkstation, Electric Power Research Institute, Palo Alto, Calif.
Institute of Electrical and Electronics Engineers (IEEE). (1991). “IEEE trial-use design guide for wood transmission structures.” 751, Piscataway, N.J.
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PLS-POLE program—Version 5. (2001). Power Line Systems, Madison, Wis.
Rural Electrification Administration (REA). (1992). “Design manual for high voltage transmission lines.” Bulletin 1724E-200, U.S. Dept. of Agriculture, Washington, D.C.
Seiler, J. F. (1932). “Effect of depth of embedment on pole stability.” Wood Preserving News, X(11).
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Published In
Practice Periodical on Structural Design and Construction
Volume 7 • Issue 4 • November 2002
Pages: 147 - 155
Copyright
Copyright © 2002 American Society of Civil Engineers.
History
Received: Oct 9, 2001
Accepted: Oct 10, 2001
Published online: Oct 15, 2002
Published in print: Nov 2002
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