Angela Street Bridge_AA 2023-0515

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February 26, 2018 Page 2 of 7 The HMA coarse aggregate materials shall meet the requirements of 904.03(b), except the coarse aggregate angularity table shall be modified as follows: COARSE AGGREGATE ANGULARITY Type Depth from Surface ≤ 4 inches > 4 inches A 55 B 75 50 C 85/80* 60 *Note: Denotes two faced crushed requirements. HMA coarse aggregates for surface mixtures shall meet the requirements of Section 904.03(d), except they may be modified as follows when the design speed or posted speed limit is equal to or less than 45 mph. Coarse Aggregate Type Traffic ESALs < 3,000,000 < 10,000,000 ≥ 10,000,000 Air-Cooled Blast Furnace Slag Yes Yes Yes Steel Furnace Slag Yes Yes Yes Sandstone Yes Yes Yes Crushed Dolomite Yes Yes Yes Polish Resistant Aggregates Yes Yes Yes Crushed Stone Yes Yes * Gravel Yes Yes * *Note: Crushed Stone or gravel may be used in accordance with ITM 221. HMA.04 Design Mix Formula and Mixture Type The design mix formula (DMF) shall be prepared by an INDOT approved Mix Design Laboratory in accordance with Section 401.05 and submitted to the Contracting Agency in an acceptable format one week prior to use. The DMF shall be based on the mixture type (design ESAL) and mixture designation of the following tables. Mixture Type Type A* Type B* Type C* Design ESAL <300,000 300,000 to <3,000,000 ≥3,000,000 AADT (Average Annual Daily Traffic)*** <4,000 4,000 - 15,000 15,000 - 30,000 AADTT (Average Annual Daily Truck Traffic)*** <50 50 - 1700 >1700 Commercial & Residential Application*** Passenger car parking with <500 stalls and <20 heavy trucks** per day, residential driveways Parking Lots with 20-300 heavy trucks** per day Heavy commercial parking lots with 150-300 heavy trucks** per day