Versuche mit großflächig geleimten Stabwerken

For confirmation of results from previous tests with glued lap timber joints six plus two trusses with spans of 10 and 15 m respectively and with differently designed glued joints were produced and tested. The ultimate loads of the investigated trusses varied between 195 and 480 kN depending on the size of the available glued areas and on the different shear strengths of the joints, which in turn related to joint geometry, angle of gluing and type of material used (spruce timber, beech plywood). Maximum deflection ranged from 32 to 46 mm. An effect of density on ultimate load and deflection of the trusses was observed. The ultimate shear strength of the joints varied from 0,68 N/mm² to 2,41 N/mm².