Specifications include, but are not limited to: Flange Post1. Description Posts are to be hot rolled flanged channel with a galvanized finish and intended to be used as supports for traffic signs. 2. Material Posts are to be rolled from high strength hot rolled steel conforming to ASTM designation A-499-81, Grade 60. The strength of the flange post shall conform to the specifications mandated by the Commonwealth of Massachusetts Highway Department. 3. Section Post shall be of a uniform flanged channel section. The dimensions of the posts shall follow the Commonwealth of Massachusetts Highway Department specifications for 2 and 3 pounds per foot flanged post. 4. Weight of sign post & base The weight of each sign post, before holes are punched, shall be 2 pounds per foot with a tolerance of plus or minus 3 ounces per foot