Creep in structural-sized beams of Argentinean Eucalyptus Grandis
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Universidad del Bío Bío
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The results presented in this paper were obtained from a test carried out during the last series of aresearch project regarding the creep behaviour of Argentinean Eucalyptus grandis loaded in drycondition. A test with a sample containing 15 structural-sized beams was carried out during 470 days.7 pieces were free of pith and another 8 contained it. The results allow to compare the creep behaviourof these beams with previous data reported for both structural-sized and small-clear specimens of thistimber species and also with those reported for other species. The effectiveness of the criteria adoptedby overseas standards as well as those of Latin-American countries for calculating the creep deflectionsof this timber species under a long-term loading is analysed. The creep deflections obtained in thepresent research are higher than those calculated by means of the procedures of the Brazilian standardNBR 7190, the European standard Eurocode 5, the American standard National Design Specificationfor Wood Construction and the Peruvian standard. On the contrary, creep results obtained in this testare lower than those calculated according to the New Zealand standard NZS 3603, the Chilean standardNCh 1198 and the former German standard DIN 1052.
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