Standard Practice for
Preservative Treatment of Utility Poles by the Thermal
Process1

This standard is issued under the fixed designation D 4064; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.

1. Scope

1.1 This practice covers the full-length preservative treatment of utility poles by the thermal process.

1.2 Poles furnished under this practice shall be limited to the
following species:
Douglas fir (Pseudotsuga menziesii),
Lodgepole pine (Pinus contorta),
Alaska yellow cedar (Chamaecyparis nootkatensis),
Northern white cedar (Thuja occidentalis), and
Western red cedar (Thuja plicata).

1.3 The purchaser should note that requirements both within
and between species vary and care must be used in selection of
specific options for the intended use and service area.

2. Referenced Documents

2.1 ASTM Standards:
D 390 Specification for Coal-Tar Creosote for the Preservative Treatment of Piles, Poles, and Timbers for Marine,
Land, and Fresh Water Use2
D 1272 Specification for Pentachlorophenol2
D 1860 Test Method for Moisture and Creosote-Type Preservative in Wood2
D 2085 Test Method for Determining Chloride Used In
Calculating Pentachlorophenol in Solutions or Wood
(Lime Ignition Method)2
D 2604 Specification for High-Boiling Hydrocarbon Solvent for Preparing Oil-Borne Preservative Solutions2
D 3507 Test Methods for Penetration of Preservatives in
Wood and for Differentiating Between Heartwood and
Sapwood2

2.2 Other Standard:
ANSI 05.1 American National Standard for Wood Poles

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