In this paper, bending behaviours in hybrid composite glulam timbers reinforced using deformed steel bars and epoxy resin adhesives (RGTSB) are presented. The technique RGTSB was developed in order to improve flexural stiffness and strength in glulam timbers composed of rapid grown Japanese cedars. A 2:3-scaled column and two halfscaled column-beam assemblies were tested under reversed cyclic loading. Force-displacement curves, hysteresis loops, flexural strain distributions, observations on failure on the tests, are described. Numerical-analysis results are reported to predict force-displacement hysteresis loops until failure of the column and beams using a software for reinforced concrete members and structures.