DESIGN OF CCA-TREATED STRESSED TIMBER DECKS

Transversely stressed longitudinal timber decks are commonly treated using oil based preservative. Water based preservatives are discouraged for use in stressed decks, primarily because they allow larger changes of the moisture content of the deck in service. As a result, higher dimensional changes of the deck occur, along with potentially dangerous fluctuations of the forces in the post tensioning rods, and a shorter life of the asphalt wearing surface. This paper describes potential problems associated with CCA treatment of stressed decks. It also describes the design and monitoring system of an experimental CCA-treated stressed decks, to be built in Gray, Maine in the fall of 1990.

Language

  • English

Media Info

  • Features: Figures;
  • Pagination: p. 261-264

Subject/Index Terms

Filing Info

  • Accession Number: 00799265
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 24 2000 12:00AM