Hardwood glued laminated timber bridges

H. B. Manbeck, John Jack Janowiak, P. R. Blankenhorn, P. Labosky

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Design standards and specifications for 5.5- to 27.4-m (18- to 90-ft) clear span hardwood glued-laminated (glulam) highway bridges have been developed and are available from the Pennsylvania Department of Transportation. Resin systems, preservative treatment processes, laminating procedures, and key structural properties have been determined and incorporated into the standards for three commercially important hardwood species: northern red oak, red maple, and yellow poplar. The keys to successfully bonding the hardwoods are proper open assembly time and clamping pressure. Pressure treatment cycles to attain 160.2 to 192.2 kg/m3 (10 to 12 pcf) retention of creosote in northern red oak, red maple, and yellow poplar glulam girders had no adverse effect on the flexural strength or stiffness.

Original languageEnglish (US)
Title of host publicationTransportation Research Record
Pages50-56
Number of pages7
Edition1426
StatePublished - Oct 1 1993

Fingerprint

Hardwoods
Timber
Laminating
Highway bridges
Beams and girders
Bending strength
Structural properties
Resins
Stiffness
Specifications

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Mechanical Engineering

Cite this

Manbeck, H. B., Janowiak, J. J., Blankenhorn, P. R., & Labosky, P. (1993). Hardwood glued laminated timber bridges. In Transportation Research Record (1426 ed., pp. 50-56)
Manbeck, H. B. ; Janowiak, John Jack ; Blankenhorn, P. R. ; Labosky, P. / Hardwood glued laminated timber bridges. Transportation Research Record. 1426. ed. 1993. pp. 50-56
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Manbeck, HB, Janowiak, JJ, Blankenhorn, PR & Labosky, P 1993, Hardwood glued laminated timber bridges. in Transportation Research Record. 1426 edn, pp. 50-56.

Hardwood glued laminated timber bridges. / Manbeck, H. B.; Janowiak, John Jack; Blankenhorn, P. R.; Labosky, P.

Transportation Research Record. 1426. ed. 1993. p. 50-56.

Research output: Chapter in Book/Report/Conference proceedingChapter

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Manbeck HB, Janowiak JJ, Blankenhorn PR, Labosky P. Hardwood glued laminated timber bridges. In Transportation Research Record. 1426 ed. 1993. p. 50-56