Data from recent test programs for Oriented Strand Board (OSB) and waferboard were used by the Structural Board Association (SBA) in establishing levels for strength and stiffness classes. The SBA is planning to submit a proposal to CSA Technical Committee (TC) on Engineering Design in Wood for inclusion of engineering properties of Design Rated OSB. This report provides a summary of the short-term (1 to 10 minutes time-to-failure) test data to assist the members of the CSA TC on Engineering Design in Wood in their evaluation of the SBA's submission. Summary of test results is presented, and conformance of the test samples to current standards, the within-mill variability, and effects of thickness, orientation and loading mode (tension versus compression) on engineering properties are discussed. Load duration, creep, and moisture effects on strength and stiffness of OSB and waferboard are not within the scope of this report.