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<br />Copyright 2004 AIA <br /> <br />MASTERSPEC Short Form <br /> <br />05/04 (R 05/06) <br /> <br />PART 2 - PRODUCTS <br /> <br />2.1 REINFORCING MATERIALS <br /> <br />A. Recycled Content of Steel Products: Provide products with an average recycled content of steel <br />products so postconsumer recycled content plus one-half of preconsumer recycled content is not <br />less than [60] <Insert numher> percent. <br /> <br />B. Reinforcing Bars: ASTM A 615/A 615M, Grade 60 (Grade 420), deformed. <br /> <br />C. Low-Alloy-Steel Reinforcing Bars: ASTM A 706/A 706M, deformed. <br /> <br />D. Plain-Steel Welded Wire Reinforcement: ASTM A 185, fabricated from [as-drawn] <br />[galvanized] steel wire into flat sheets. <br /> <br />E. Deformed-Steel Welded Wire Reinforcement: ASTM A 497/A 497M, flat sheet. <br /> <br />F. Supports: Suspend reinforcement from back of mold or use bolsters, chairs, spacers, and other <br />devices for spacing, supporting, and fastening reinforcing bars and welded wire reinforcement <br />in place according to PCI MNL 117. <br /> <br />G. Prestressing Strand: ASTMA416/A416M, Grade 270 (Grade 1860), uncoated, 7-wire, low- <br />relaxation strand. <br /> <br />1. Coat unbonded post-tensioning strand with corrosion inhinitor passing ASTM D 1743 <br />and sheath with polypropylene tendon sheathing. Include anchorage devices and coupler <br />assemblies. <br /> <br />2.2 CONCRETE MATERIALS <br /> <br />A. Portland Cement: ASTM C 150, Type I or Type ill, gray, unless otherwise indicated. <br /> <br />1. For surfaces exposed to view in fmished structure, mix gray with white cement, of same <br />type, brand, and mill source. <br /> <br />B. Supplementary Cementitious Materials: <br /> <br />1. Fly Ash: ASTM C 618, Class C or F, with maximum loss on ignition of 3 percent. <br />2. Metakaolin Admixture: ASTM C 618, Class N. <br />3. Silica Fume Admixture: ASTM C 1240, with optional chemical and physical <br />requirement. <br />4. Ground Granulated Blast-Furnace Slag: ASTM C 989, Grade 100 or 120. <br /> <br />C. Normal-Weight Aggregates: Except as modified by PCI MNL 117, ASTM C 33, with coarse <br />aggregates complying with Class 5S. Stockpile fine and coarse aggregates for each type of <br />exposed fmish from a single source (pit or quarry) for Project. <br /> <br />1. Face-Mixture-Coarse Aggregates: Selected, hard, and durable; free of material that <br />reacts with cement or causes staining; to match selected fmish sample. <br /> <br />ARCHITECTURAL PRECAST CONCRETE <br /> <br />03450 - 3 <br />