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KNAPP RESIDENCE OUTLINE SPECIFICATIONS <br /> SECTION 03410 - STRUCTURAL PRECAST CONCRETE <br /> A. PROJECT INCLUDES <br /> 1 . Precast Units : <br /> a . Conventionally reinforced precast concrete units . <br /> B. QUALITY ASSURANCE <br /> 1 . Casting: Plant cast . <br /> 2 . General Notes : See sheet S5 for additional information <br /> pertaining to this section. <br /> 3 . Standards : ACI 318 Building Code Requirements for <br /> Reinforced Concrete, and CRSz Manual of Standard Practice . <br /> 4 . Testing: Independent testing laboratory. <br /> 5 . Erection Tolerance Limits : PCI MNL 127 . <br /> C. PRODUCTS <br /> 1 . Design Mix: <br /> a . 5000 psi, 28 day compressive strength for typical units . <br /> b. 3500 psi release strength for prestressed units . <br /> 2 . Formwork: Plywood or metal panel formwork sufficient for <br /> structural and visual requirements . <br /> 3 . Reinforcing Materials : <br /> a . Reinforcing Bars : ASTM A 615, Grade 60, deformed. <br /> b. Steel Wire : ASTM A 82 . <br /> c . Steel wire Fabric: ASTM A 185, welded. <br /> d. Supports for Reinforcement for Exposed to View Concrete : <br /> CRSI Class 1, plastic protected legs . <br /> e . Prestressing Tendons : ASTM A 416 , Grade 250 , 7-wire <br /> stress-relieved strand. <br /> 4 . Concrete Materials : ASTM C 150, Type I or Type III, <br /> Portland cement; potable water. <br /> a . ASTM C 33 , normal weight aggregates . <br /> 5 . Concrete Admixtures : Containing less than 0 . 1 percent <br /> chloride ions . <br /> a . Air-Entraining Admixture: ASTM C 260 . <br /> b. water-Reducing Admixture: ASTM C 494 , Type A. <br /> DIVISION 3 - CONCRETE d PAGE 3-5 <br />