THE HORIZONTAL POLES OF TUMWATER CANYON

The guardrail system is described which offers protection to motorists while contributing to the aesthetics of the view. Logs were installed on concrete pedestals and subsequent overlays and shaping of the roadway required the installation of shims to adjust the height of the rail. The Douglas Fir timber railing is pressure-treated for performance and durability. The timber is pressure-treated with pentachlorophenol 10 pounds per cubic foot).

  • Corporate Authors:

    American Wood Preservers Institute

    1651 Old Meadow Road
    McLean, VA  USA  22101
  • Publication Date: 1971

Media Info

  • Features: Figures; Photos;
  • Pagination: 3 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00153022
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 4 1977 12:00AM