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INDIAN RIVER COUNTY JULY 25, 2014 <br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS <br />3.6 FACE -UP FINISHES <br />A. Float Finish: Consolidate surface of plastic concrete with power -driven floats or by hand <br />floating. Restraighten and cut down high spots and fill low spots. Repeat float passes and <br />restraighten until surface is left with a uniform, smooth, granular texture. <br />3.7 FACE -DOWN FINISHES <br />Smooth, As -Cast Finish: Cast panel to produce a surface free of pockets, sand streaks, and <br />honeycombs. Produce a surface appearance of uniform color and texture. <br />3.8 CONCRETE PROTECTING AND CURING <br />A. Protect freshly placed concrete from premature drying and excessive cold or hot temperatures <br />according to ACI 301. <br />1. Apply evaporation retarder in hot, dry, or windy weather to protect concrete from rapid <br />moisture loss before and during finishing operations. Apply according to manufacturer's <br />written instructions after screeding and bull floating concrete, but before float finishing. <br />B. Begin curing immediately after finishing concrete. Cure by one or a combination of the following <br />methods according to ACI 308.1: <br />Curing Compound: Apply uniformly in continuous operation by power spray or roller <br />according to manufacturer's written instructions. Recoat areas subjected to heavy rainfall <br />within three hours after initial application. Maintain continuity of coating and repair <br />damage during curing period. <br />3.9 ERECTION <br />Use erection equipment with care to prevent damage to floor slabs and panels <br />B. Lift, support, and erect panels only at designated lifting or supporting points indicated on Shop <br />Drawings. <br />C. Do not erect panels until 75 percent of 28 -day compressive strength of concrete has been <br />verified. <br />D. Do not erect panels until verified compressive strength of concrete exceeds 3000 psi. <br />Install tilt -up concrete panels level, plumb, square, and true. Place panels on leveled grout - <br />setting pads or shims in correct position. Maintain joint width of 1/2 inch between panels. <br />Install tilt -up concrete panels with face -down surfaces exposed to exterior of building. <br />F. Temporarily brace and support panels securely in position against loads comparable in intensity <br />to those for which structure was designed. Maintain braces and supports in place, undisturbed, <br />until entire integrated supporting structure has been completed and permanent connections to <br />panels are secured. <br />G. Anchor panels in place and, if indicated, to one another. <br />TILT -UP CONCRETE 034000 - 10 <br />