Specifications include, but are not limited to: Revetment Bedding Stone: Bedding stone for future revetment construction shall be durable quarried stone, hard and angular, free from laminations, weak cleavages, and undesirable weathering, and of such character that it will not disintegrate from the action of air, salt water, freezing and thawing, and in handling and placing. Sedimentary stone will not be accepted. Bedding stone shall be approximately 3" up to 8" in size. Bedding stones smaller than 3" will not be acceptable. The bedding stone shall have a minimum unit weight of 160 lbs. per cubic foot. No. 57 Stone: aggregate as defined in Maryland State Highway Administration (MSHA) Standard Specifications for Construction and Materials issued July 2018 with all the latest addenda.