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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
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Requested Product

Title: Naturally Durable Wood Species for Repair and Rehabilitation of Aboveground Components in Covered Bridges

Source: FPL RIP-4723-011

Author(s): Clausen, Carol

Publication Year: 2009  View PDF »

Related Publications: view

Category: Research In Progress

Abstract: Covered bridges are historical masterpieces that were designed for protection from the elements, thereby allowing untreated wood components to remain serviceable for decades. However, protecting all wood components continuously from all sources of moisture exposure is impractical. Some areas of the structures, such as weatherboarding and wood members near the ends of the bridges, are particularly susceptible to wind-driven precipitation. Chronic exposure to moisture or wet and dry cycling from rain can increase the moisture content of wood components sufficiently to allow for biological attack by fungi and insects.

Keywords: Covered bridge; aboveground; natural durability; extractives; invasive species

File size: 926 kb(s)

Date posted: 08/08/2009
Current FPL Scientist associated with this product
Clausen, Carol A.
Supervisory Research Microbiologist
  

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