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<br />n <br /> <br />L.J <br /> <br />(' <br /> <br />L.J <br /> <br />n <br /> <br />L.J <br /> <br />n <br /> <br />LJ <br /> <br />(' <br /> <br />u <br /> <br />n <br /> <br />u <br /> <br />(' <br /> <br />L.J <br /> <br />n <br /> <br />LJ <br /> <br />n <br /> <br />u <br /> <br />n <br /> <br />LJ <br /> <br />n <br /> <br />w <br /> <br />n <br /> <br />L.J <br /> <br />n <br /> <br />LJ <br /> <br />n <br /> <br />LJ <br /> <br />n <br /> <br />u <br /> <br />ri <br /> <br />LJ <br /> <br />n <br /> <br />L.J <br /> <br />n <br /> <br />L.J <br /> <br />n <br /> <br />u <br /> <br />1.04 DESCRIPTION <br /> <br />1.05 <br /> <br />A. <br /> <br />Concrete shall be of Portland cement, ASTM C-94, fine aggregate, coarse aggregate, water <br />and admixtures as specified and shall be ready-mixed, or transit-mixed concrete. All <br />constituents, including admixture, shall be hatched at the central batch plant. <br /> <br />B. <br /> <br />Reinforced concrete shall conform to ACI Specification 318-89 or latest revision. <br /> <br />C. <br /> <br />Field testing and inspection services required will be provided by the Contractor. Cost of <br />such work, except as specifically stated otherwise, will be paid for by the Contractor. <br />Methods oftest will comply in detail with the latest applicable ASTM Methods of Testing. <br /> <br />D. <br /> <br />Samples of constituents and of concrete as placed will be subjected to laboratory tests. <br />Materials incorporated in the work shall conform to approved samples. <br /> <br />E. <br /> <br />Under special circumstances, the Engineer may allow minor deviations from the material <br />requirements specified, provided the resulting concrete quality is not adversely affected or <br />provided a suitable adjustment in cement content is made to compensate for such <br />deviations without cost to the Owner. <br /> <br />SUBMIrr ALS <br /> <br />A. <br /> <br />Submit, as provided in the General Conditions and Section 01340, shop drawings showing <br />placement of forms, form joints, major inserts and blockouts. <br /> <br />1.06 QUALITY ASSURANCE <br /> <br />06/05 <br /> <br />A. <br /> <br />The actual acceptance of aggregates and development of mix proportions to produce <br />concrete conforming to the specific requirements shall be determined by means of prior <br />laboratory tests made by the Concrete Supplier or the Contractor at his expense with the <br />constituents to be used on the work. <br /> <br />B. <br /> <br />The Concrete Supplier shall submit through the Contractor to the Engineer for approval the <br />concrete mix he intends to use, designed within the limits of these specifications, listing the <br />brand of cement, source and results of tests of aggregates and admixtures not later than 14 <br />days prior to the beginning of placing concrete. <br /> <br />C. <br /> <br />The limiting strengths, water-cement ratios and cement factors as shown on (Table A) shall <br />apply. Maximum water-cement (#/#) for structures shall be 0.53 by weight. <br /> <br />TABLE A <br /> <br />Minimum <br />Compo Str. <br />psi at 28 days <br /> <br />Maximum Net <br />Water Content <br />gals/I 00 lbs* <br /> <br />Minimum <br />Cement Factor <br />100 lbs/cu yd** <br /> <br />2500 <br />3000 <br />3500 <br />4000 <br /> <br />7.4 <br />7.0 <br />6.4 <br />5.85 <br /> <br />4.3 <br />4.8 <br />5.64 <br />5.64 <br /> <br />*Maximum; decrease if possible. This represents total water in mix at time of mixing, <br />including free water on aggregates, and water in admixture solution. <br /> <br />**Minimum; increase as necessary to meet other requirements. These cement factors apply <br />to "controlled" concrete subject to specific inspection. <br />03300-2 03-4138.8 <br />