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40-27 BUILDING <br />PRECAST CONCRETE <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />PART 2 - PRODUCTS <br />2.1 REINFORCING MATERIALS <br />A. Recycled Content of Steel Products: Provide products with an average recycled <br />content of steel products so postconsumer recycled content plus one-half of <br />preconsumer recycled content is not less than 25 percent. <br />B. Reinforcing Bars: ASTM A 615/A 615M, Grade 60, deformed. <br />C. Steel Bar Mats: ASTM A 184/A 184M, fabricated from ASTM A 615/A 615M, <br />Grade 60, deformed bars, assembled with clips. <br />D. Plain -Steel Welded Wire Reinforcement: ASTM A 185, fabricated from as -drawn steel <br />wire into flat sheets. <br />E. Deformed -Steel Welded Wire Reinforcement: ASTM A 497/A 497M, flat sheet. <br />F. Supports: Suspend reinforcement from back of mold or use bolsters, chairs, spacers, <br />and other devices for spacing, supporting, and fastening reinforcing bars and welded <br />wire reinforcement in place according to PCI MNL 117. <br />2.2 CONCRETE MATERIALS <br />A. Portland Cement: ASTM C 150, Type I or Type III, gray, unless otherwise indicated. <br />B. Supplementary Cementitious Materials: <br />1. Fly Ash: ASTM C 618, Class C or F, with maximum loss on ignition of 3 percent. <br />2. Ground Granulated Blast -Furnace Slag: ASTM C 989, Grade 100 or 120. , <br />C. Normal -Weight Aggregates: Except as modified by PCI MNL 117, ASTM C 33, with <br />coarse aggregates complying with Class 5S. Stockpile fine and coarse aggregates for I <br />each type of exposed finish from a single source (pit or quarry) for Project. <br />D. Water: Potable; free from deleterious material that may affect color stability, setting, or ' <br />strength of concrete and complying with chemical limits of PCI MNL 117. <br />E. Air -Entraining Admixture: ASTM C 260, certified by manufacturer to be compatible ' <br />with other required admixtures. <br />F. Chemical Admixtures: Certified by manufacturer to be compatible with other <br />admixtures and to not contain calcium chloride, or more than 0.15 percent chloride ions ' <br />or other salts by weight of admixture. <br />1. Water -Reducing Admixtures: ASTM C 494/C 494M, Type A. ' <br />2. Retarding Admixture: ASTM C 494/C 494M, Type B. <br />3. Water -Reducing and Retarding Admixture: ASTM C 494/C 494M, Type D. <br />4. Water -Reducing and Accelerating Admixture: ASTM C 494/C 494M, Type E. ' <br />C06922.001.00 03 45 00 - 4 <br />05-22-14 <br />