When a timber beam reinforced with steel plates attached by metal connectors and simply supported at both ends is extended outside of the span, stresses and strains of the reinforced beam in the span are considered to differ from those of simply supported beam at both ends. This paper deals with the elastic analysis of a reinforced timber beam with extra length outside of the span. The effects of extra length on the elastic behavior of a reinforced timber beam are relatively great and shear force of metal connectors, bending moment and deflection of the beam decrease considerably.
