This specification covers asphalt plank used for bridge decks as well as for industrial floors. Asphalt planks shall be classified according to usage: Type Ia; Type Ib; and Type II. Asphalt plank shall be formed from a mixture of asphalt, fibers, modifiers, or a combination thereof, and mineral filler in such a manner as to produce a uniformly dense mass. The following test methods shall be intended to measure those attributes necessary to measure the ability of asphalt plank to provide a reasonably long and satisfactory service: absorption; brittleness; dimensions; and hardness.