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' <br /> 1. AvaiIable Prodacts: Subject to compiiance with requirements, products that may <br /> � be incorporated in the Work include,but are not limited to,the foliowing: <br /> 2.. Products: Subject to compliance with requirements,provide one of the following: <br /> ' I. Water-Reducing Admixture: ASTM C 494,Type A. <br /> 1. Availabte Products: Subject to compliance with <br /> ' 2.3 RELATED MATERIALS <br /> ' I. Available Manufacturers: Subject to compliance with requirements. <br /> A. Sand Cushion: Clean,natural sand. <br /> ' B. Vapor Retarder: Provide vapor retarder that is resistant to deterioration when tested <br /> according to ASTM E 154,as follows: <br /> ' 1. Polyethylene sheet not less than 8 mils#hick. <br /> C. Liquid Membrane-Fortning Curing Compound: Liquid-iype rnembrane-forming curing <br /> compound complying with ASTM C 309, Type I, Class A. Moisture loss not more than <br /> ' 0.55 kgf sq.meter when applied at 240 sc�,ft./gal. <br /> 1. Pravide material that has a maximum volatile organic compound(VOC)rating of <br /> ' 350 mg per liter. <br /> 2. Available Products: Subject to campliance with requirements. <br /> PROPORTIONING AND DESIGNTNG NIIXES <br /> ' See)1015 Genexal Structura.l <br /> ' 2.4 CONCRETE MIIfl.i�IG <br /> A. Ready-Mixed Concrete: Comply with requirements of ASTM C 94,and as specified. <br /> ' PART 3-EXECUTION <br /> 3.I GENERAL <br /> ' A. Coordinate the installation of joint materials, vapor retarderlt�arrier, and other related <br /> materials with placement of forms and reiaforcing steel. <br /> , 3.2 FORMS <br /> A, General: Design,erect,support,bracs,and maintain formwork to support vertical,lateral, <br /> ' static, and dynaraic loads that might be applied until concrete struct�re can support such <br /> loads. Construct formwork so concrete members and structures are of correct size,shape, <br /> alignment, elevation, and position. Maintain fotmwork construction tolerances and <br /> surface irregularities c�mplying with the following ACi 3471imits: <br /> , 1. Provide Class A tolerances for concrete surfaces ex}�osed to view. <br /> 2. Provide Class C toierances for other concrete surfaces. <br /> ' B. Provisions for Other Trades: Provide openings in concrete formwork to accommadate <br /> worlc of other trades. Determine size and location of openings,mcesses,and chases from <br /> trades providing such items. Accurately piace and securely support itcros built into forms. <br /> I3.3 VAPOR RETARDER/BARR�R Il�TSTALLATION <br /> ' CONCRETE Page 3 of 8 <br />