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<br />Version 09/29/2021 Special Provisions - 10 <br />e. The paint shall dry to a no tracking condition in no more than 6 minutes. The no <br />tracking condition shall be determined by actual application on the pavement at a <br />wet film thickness of 30 mils (750 μm) or greater with white or yellow paint covered <br />with glass beads at a rate of 7 lb/gal. (0.7 kg/L). <br /> <br />2. Standard Pavement Marking Beads shall be in accordance with INDOT Specification <br />Section 921. <br /> <br />3. Material must be provided in 55-gallon drums. <br /> <br />4. Paint shall be Ennis-Flint High Build Fast Dry Waterborne Traffic Paint or an approved <br />equal. Specifications shall be submitted to both the Engineer and Manager of Traffic <br />and Lighting for approval. <br /> <br />XX. DIVISION F: SNOW REMOVAL MATERIALS <br /> <br />B. Prevailing specifications/INDOT Standard Specification Section: None <br /> <br />C. Additions: <br /> <br />1. This specification covers requirements for replaceable cutting-edge blades for motor <br />graders and underbody truck scrapers. <br /> <br />2. Material: <br /> <br />a. The cutting edges shall be formed from high carbon steel made by the open hearth, <br />basic oxygen, or electric furnace process and shall have the following composition. <br /> <br />b. The composition of steel shall be as follows: <br /> <br />High Carbon Heat Treated <br />Composition Min (%)Max (%)Composition Min (%) Max (%) <br />Carbon 0.80 1.00 Carbon 0.25 0.35 <br />Manganese 0.50 0.90 Manganese 0.75 1.20 <br />Phosphorous --- 0.05 Phosphorous --- 0.05 <br />Sulfur --- 0.05 Sulfur --- 0.05 <br />Silicon --- 0.35 Silicon 0.10 0.40 <br /> Boron 0.0005 0.0085 <br /> <br />c. The finished cutting edge shall have a Brinell hardness number, under a 3000 <br />kilogram load, of not less than 250 nor more than 350 for high carbon blades, and <br />not less than 400 nor more than 520 for heat treated blades. The Brinell hardness <br />number will be determined by the current Method Test for Brinell Hardness of <br />Metallic Materials, ASTM Designation E10. <br /> <br />d. A chemical analysis of each melt of steel shall be made available by the <br />manufacturer to determine the percentages of the elements specified. <br /> <br />3. The cutting edges shall be of the length specified on the request for quotation form and <br />shall be double bevel, curved, 5/8 inch or 3/4-inch-thick, and 6 inch or 8 inch wide after <br />forming. The bevel shall be 1 inch in length and the cutting edge shall have a radius <br />curvature of 7 1/2 inch to 10 inch. The finished blade section will be given a coat of rust <br />resistant paint and shall be free of warpage and longitudinal deviation. The cutting <br />edges for 5/8-inch blades and 3/4-inch blades shall be punched with 11/16-inch square <br />holes with countersink to receive 5/8-inch diameter #3 plow bolt. Hole punching to be