Full-Scale Tests on Tapered and Curved Glulam Beams

by Vijaya K.A. Gopu, Grad. Student; Civ. Engrg. Dept., Colorado State Univ., Fort Collins, Colo.,
James R. Goodman, (M.ASCE), Prof.; Civ. Engrg. Dept., Colorado State Univ., Fort Collins, Colo.,

Serial Information: Journal of the Structural Division, 1975, Vol. 101, Issue 12, Pg. 2609-2626

Document Type: Journal Paper


A series of full-scale tests, designed to evaluate the available theoretical analyses, were conducted on double-tapered, pitched, and curved glulam beam members. The Douglas-fir beams, each with a span of 30 ft, varied in pitch from 2 in 12 to 5 in 12. Each beam was instrumented for strain and deflection measurements and tested under working loads. In addition, load tests were conducted to beam failure, which occurred in radial tension stress for the beams that were not reinforced. Test results generally confirm the currently used theory for evaluation of radial tension stress. Suggestions for altering current design procedures are examined.

Subject Headings: Curved beams | Load tests | Ultimate strength | Full-scale tests | Laminated materials | Radiation | Strain | Displacement (mechanics)

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