IEEE 1217-2001 pdf download IEEE Guide for Preservative Treatment of Wood Distribution and Transmission Line Structures
1.Overview
Wood is one of the most common structural materials used in the U.S. for distribution and high-voltagetransmission structures. To date, there has been limited guidance to the design engineer on preservativesystems and treatment methods used for wood structures.
Wood can be protected from the attack of decay fungi, harmful insects, or marine borers by properapplication of selected wood preservatives. Obtaining prolonged service life of treated wood utility productsrequires careful control of all aspects of the conditioning and treating process. Effective treatment willsignificantly increase the service life of wood structures.
1.1 Scope
This guide is intended to provide practical information to be used in conjunction with technical informationprovided in the AWPA 2001 Book of Standards, ANSI 05.1-1992 (for wood poles), ANSI 05.2-1989 (forwood products such as structural glued laminated timber for utility structures), and ANSI 05.3-1989 (forwood products such as solid sawn wood crossarms and braces). These voluntary product standards are usedworldwide and are modified as necessary by users for their specific needs.
1.2 Purpose
The purpose of this guide is to provide the design engineer with information on treatment of wood poles andcrossarms for distribution and overhead transmission lines.
2. References
This guide shall be used in conjunction with the following publications. When the following standards aresuperseded by an approved revision the revision shall apply.
ANSI 05.1-1992,American National Standard Specifications and Dimensions for Wood Poles.
ANSI 05.2-1989,American National Standard Specifications for Structural Glued Laminated Timber forUtility Structures.
ANSI 05.3-1989,American National Standard for Solid Sawn Wood Crossarms and Braces–Specificationsand Dimensions.
Federal Specification TT-W-571 (1977), Wood Preservation Treating Practices 1997.4
Rural Utilities Service (RUS) Bulletin 1728F-700, RUS Specification for Wood Poles, Stubs and AnchorLogs, September 1993.5
3. Definitions
For the purposes of this guide, the following terms and definitions apply. The IEEE 100, The AuthoritativeDictionary of IEEE Standards Terms, Seventh Edition (B5] should be referenced for terms not defined inthis clause.
3.1 carrier: Medium that is used to carry the preservative into the wood.
3.2 empty-cell process: Treating process where air pressure is used to force excess preservative out of thewood at the end of the process.
3.3 full-cell process: Treating process where preservative is forced by pressure into the wood.
3.4 fungi: Organisms that can decay wood.
3.5 Lowry: A specific type of empty-cell treating process.
3.6 oilborne: Dissolved in oil.
3.7 pressure treatment: Preservative treatment where wood is placed in a pressure vessel and preservativeis forced into the wood.
3.8 seasoned: Term used for wood that has the moisture content reduced enough to receive preservativetreatment.
3.9 thermal treatment: Preservative treatment in open tanks where temperature diferential causespreservative movement into wood.
3.10 treating cylinder: Cylindrical pressure vessel used in the treating process, ranging in length to over
36 m
3.11 waterborne: Dissolved in water.
IEEE 1217-2001 pdf download
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