This is a report of progress in the 15-year investigation to determine the most effective preservative with minimum retention to be used in treating either oak, pine or fir species to reduce decay and termite attack. The results of the investigation after 112 months exposure of the specimens are: 1) Specimens treated with Coal Tar Creosote show less decay and termite attack than specimens treated with other preservatives. 2) Chromated Zinc Chloride and Tanalith are affording less protection against decay and termite attack than the other preservatives. 3) In general, the fir specimens treated with most of the preservatives, are subject to less decay and termite attack than the oak and pine specimens, however, oak is generally more resistant to decay and termite attack than pine or fir when not treated. 4) The average index rating increases with the amount of preservative in the specimens. 5) The analysis of one fir stake treated with Pentachlorophenol indicated considerable loss in preservative in that part of the stake buried in the ground for 112 months. From the data secured during the inspection of treated specimens of oak, fir and pine species after 112 months exposure, it seems logical to conclude that Coal Tar Creosote is affording more resistance to decay and termite attack than the other preservatives.

  • Supplemental Notes:
    • See also RRIS #072587, Section 09, RRIS Bulletin 7501 and RRIS #084949 through #084954 and #084956, Section 01, RRIS Bulletin 7502. Conducted under sponsorship of AREA Committee 3- Ties and Wood Preservation.
  • Corporate Authors:

    Association of American Railroads Research Center

    3140 South Federal Street
    Chicago, IL  United States  60616
  • Publication Date: 1967-1

Media Info

  • Features: Figures; Tables;
  • Pagination: 27 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00084955
  • Record Type: Publication
  • Source Agency: Association of American Railroads
  • Files: TRIS
  • Created Date: Jun 10 1975 12:00AM