Fire retardant treated (FRT) oriented strandboard (OSB) and plywood of different widths were tested in static bending to determine width effects. Results were consistent with previous width effect studies and showed that increasing specimen width results in a decrease in sample MOR properties among all the sample groups tested in this study. Increasing sample width for OSB samples leads to more consistent MOR and MOE values. FRT plywood has a better width factor value than the two OSB sample groups tested in this study.
Keywords: OSB, fire retardant treatment, bending, sample width