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Field performance of timber bridges. 12, Christian Hollow stress-laminated box-beam bridgeAuthor(s): J. P. Wacker; S. C. Catherman; R. G. Winnett
Source: (Research paper FPL ; RP-560):17 p. : ill., maps ; 28 cm.
Publication Series: Research Paper (RP)
Station: Forest Products Laboratory
PDF: Download Publication (814 KB)
DescriptionIn January 1992, the Christian Hollow bridge was constructed in Steuben County, New York. The bridge is a single-span, stress-laminated box-beam superstructure that is 9.1 m long, 9.8 m wide, and 502 mm deep (30 ft long, 32 ft wide, and 19-3/4 in. deep). The performance of the bridge was continuously monitored for 28 months, beginning shortly after installation. Performance monitoring involved gathering and analyzing data relative to the wood moisture content, force level in the stressing bars, vertical bridge creep, and behavior under static load conditions. In addition, comprehensive visual inspections were conducted to assess the condition of the overall structure. Based on field evaluations, the bridge is performing well with no structural or serviceability deficiencies.
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CitationWacker, J. P.; Catherman, S. C.; Winnett, R. G. Field performance of timber bridges. 12, Christian Hollow stress-laminated box-beam bridge. (Research paper FPL ; RP-560):17 p. : ill., maps ; 28 cm.
KeywordsBridges, Structural timbers, Laminated wood, Stress analysis, Performance, Construction technology, Stress lamination, Box beams
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