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Bending strength of shallow glued-laminated beams of a uniform gradeAuthor(s): Catherine M. Marx; Russell C. Moody
Source: Res. Pap. FPL-380. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 1981: 19 pages
Publication Series: Research Paper (RP)
Station: Forest Products Laboratory
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DescriptionNinety glued-laminated Douglas-fir or southern pine beams of a uniform grade with 2-, 4-, or 6-laminations were evaluated in static bending tests. No specially graded tension laminations or end joints were used. The purpose of the tests was to determine which of three present design criteria best predict near minimum bending strength values for shallow glued-laminated (glulam) beams. A variation of a strength ratio concept, with an applied adjustment factor of 0.85, was found to predict the near- minimum strengths more accurately than the IK/IG concept now used for deep beams. Because a new method for determining appropriate design stresses for shallow beams was developed, results will be useful to industry committees establishing specifications.
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CitationMarx, Catherine M.; Moody, Russell C. 1981. Bending strength of shallow glued-laminated beams of a uniform grade. Res. Pap. FPL-380. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 1981: 19 pages
KeywordsGlued-laminated beams, bending strength, glulam beams, static bending tests
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