1.1 This test method for toughness of wood-based structural panels covers the determination of energy necessary to cause failure by impact loading of a beam specimen which is simply supported and loaded at midspan. Wood-based structural panels in use include plywood, waferboard, oriented strand board, and composites of veneer and of wood-based layers. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilit