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• <br />11 <br />DIVISION 3. CONCRETE <br />SECTION O3010 - CONCRE E <br />A. Materials: <br />Concrete: <br />Cement: <br />Aggregates: <br />Water: <br />Reinforcing: <br />Wire Mesh: <br />Reinforcing Accessories <br />B. Standards for Work: <br />Transit Mix ASTM C -94-74a <br />3000 P.S.I. <br />Portland ASTM C-150-76, Type I <br />As,rm C -33-71a <br />Potable <br />Intermediate Grade Billet ASTM A <br />615072 and A 305-60 <br />Deformation ASTM A 345 <br />ASTM A 186-72 <br />Not -Dipped Galvanized with ASTM <br />D-544 <br />A.C.I. 318-71 Building Code Requirements for Reinforced Concrete <br />A.C.I. 315-°74 detailing Standards <br />A.C.I. 301-72 Specifications for Structural Concrete for Bldgs. <br />A.C.I. 347-68 Recommended Practice for Concrete Form Work <br />C.R.S.I. 63 Recommended Practice for Placing Reinforcing Bars <br />C. General Requirements: <br />I. No concrete shall be placed/poured without prior notice <br />to the 0% -.nor and the Architect. A11 concrete is to be <br />poured in a continuous operation, <br />2. All form work shall conform to the shape and dimensions <br />as shown on the drawings. The Contractor is to properly <br />brace and tie water -tight the formwork so as to insure <br />dimensional stability and safety. The Contractor shall <br />wet down the forms or use an approved "release" material. <br />Do not strip the forms until permitted to do .so by the <br />Architect. Any defective concrete or concrete surfaces <br />that are out of alignment, shall be removed and replaced.. <br />All sueh rgnpir Work sha11 be accumpliished by approver! <br />concrete repair methods. <br />3. All concrete shall be of a design-ioiix to achieve a com- <br />prehensive strength of 3,000 P.S.I. at 28 days. No re - <br />tempered or contaminated- concrete will be allowed. All <br />concrete shall be placed within 90 minutes of di ,)atch <br />time, <br />03010-1 <br />