Full-Scale Tests on Single-Tapered Glulam Members

by Richard M. Gutkowski, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Colorado State Univ., Fort Collins, Colo. 80523,
George R. Dewey, Instr. of Engrg. Sci.; Univ. of Idaho, Moscow, Idaho,
James R. Goodman, (M.ASCE), Prof. of Civ. Engrg.; Colorado State Univ., Fort Collins, Colo. 80523,


Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 10, Pg. 2149-2161


Document Type: Journal Paper

Abstract: Analytical and experimental studies were conducted on Glulam members with tapered configuration. Full-scale flexural tests were conducted under working loads. Three different geometries were investigated; namely a beam, an arch leg and an arch rafter. Each geometry was replicated in Douglas-fir and Southern pine species. Strain and deflection were measured and compared with theoretical predictions obtained by a finite element modeling. Load tests were also performed to failure. Stress results indicate that current design computations yield highly conservative stress levels. A commonly used interaction equation is evaluated in light of the ultimate strength results observed in the tests to destruction.

Subject Headings: Load tests | Laminated materials | Full-scale tests | Geometrics | Arches | Finite element method | Flexural strength | Load factors

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