BS 144:1997
Withdrawn
Specification for coal tar creosote for wood preservation
Hardcopy , PDF
English
07-15-1997
03-28-2022
Requirements for four types of coal tar creosote for wood preservation. Some test methods are included together with guidance on the methods of treatment of timber.
| Committee |
B/515
|
| DevelopmentNote |
Supersedes 96/120287 DC, BS 144-1(1990) & BS 144-2(1990). (04/2003) Reviewed and confirmed by BSI, December 2009. (11/2009)
|
| DocumentType |
Standard
|
| Pages |
26
|
| PublisherName |
British Standards Institution
|
| Status |
Withdrawn
|
| Supersedes |
This British Standard specifies requirements for four types of coal tar creosote for wood preservation. Type 1 creosote is intended for treatment of timber by pressure impregnation.
Type 2 creosote is also intended for pressure impregnation, but has a more closely defined distillation range and a more restricted residue content than creosote of type 1. Type 2 creosote is especially suitable for treatment of poles for overhead power and telecommunication lines, and for structural timbers where bleeding in service could present a problem.
Type 3 creosote is intended for treatment of timber by immersion and brushing.
Type 4 creosote is intended for treatment of timber by pressure impregnation at temperatures > 100 °C. This creosote excludes the lower boiling fractions allowable in the other three creosote types and is especially suitable where volatility leading to odour is a problem.
NOTE. Creosote of types 1, 2 and 3 may be used for the hot-and-cold open tank process.
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