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' <br /> 1.4 QUALITY ASSURANCE <br /> A. Codes and Standards: Comply with provisions of the following codes, speci�cations, ' <br /> and standards,except where more stringent requirements are shown or specified: <br /> 1. ACI 318, "Building Code Requirements for Reinforced Concrete." ' <br /> 2. Concrete Reinforcing Steel Institute(CRSI)"Manual of Standard Practice." <br /> PART 2-PRODUCTS ' <br /> See General Structural Notes: in Division I General rec}uirements for: <br /> 2.1 REINFORCING MATERIALS , <br /> A. Reinforcing Bars: <br /> B. Galvanized Reinforcing Bars: ' <br /> C. Steei Wire: ASTM A 82,piain,coid-drawrf steel. (if any,see drawings). <br /> D. Welded Wire Fabric: (If any,see drawings). , <br /> E. Supports for Reinforcemenr Bolsters, chairs, spacers, and other devices for spacing, <br /> supporting, and fastening reinforcing bars and weidect wire fa.bric in place. Use wire bar-type ' <br /> supports complying with CRSI specifications. <br /> 1. For slabs-on-grade, use supports with sand plates or horizontal runners where , <br /> base materia�will not support chair legs. <br /> 2. For exposed-to-view concrete surfaces where legs of supports are in contact with <br /> forms,provide supports with legs that are protected by plastic(CRSI,Class 1)or stainless <br /> steel(CRSI,Class 2). , <br /> 2.2 CONCRETE MATERIALS <br /> A. Portland Cement: ASTM C 150,Type I. ' <br /> 1. Use one brand of cement throughout Project unless otherwise acceptable to <br /> Architec� ' <br /> B. Fly Ash: ASTM C 618,Type F. <br /> C. Normal-VVeight Aggregates: ASTM C 33. Provide aggregates from a single source for , <br /> exposed concrete. <br /> 1. For exgosed exterior surFaces,do not use fine or coarse aggregates that contain , <br /> substances that can cause spalling. <br /> 2. Local aggregates not camplying with ASTM C 33 that have been shown to , <br /> produce concrete of adequate strength and durability by special tests or actual <br /> service may be used when acceptable to Architect. <br /> D. Lightweight Aggregates: ASTM C 330. ' <br /> E. Water: Potable. <br /> G. Admixtures,General: Provide concrete admixtures that conta.in not more than 0.1 percent , <br /> chloride ions. <br /> H. Air-Entraining Admixture: ASTM C 260, certified by snanufacturer to be compatible ' <br /> with other required adraixtures <br /> CONCRETE Page 2 of 8 <br /> , <br />