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INDIAN RIVER COUNTY JULY 25, 2014 <br />INTERGENERATIONAL RECREATION CENTER 100% CONSTRUCTION DOCUMENTS <br />C. Accurately place and securely support embedded items, anchorages, inserts, cramps, retainers, <br />bar chords and sleeves, and other items to be built into panels. Coordinate with other trades for <br />installing cast -in items. <br />3.4 PANEL CASTING, GENERAL <br />Comply with ACI 301 for handling, placing, and consolidating concrete. <br />B. Maintain position of steel reinforcement, inserts, and anchors during concrete placement, <br />consolidation, and finishing. <br />C. Screed panel surfaces to correct level with a straightedge and strike off. <br />Begin initial floating before excess moisture or bleedwater appears on the surface. Use <br />bull floats or darbies to form a uniform and open -textured surface plane free of humps or <br />hollows. Do not disturb panel surfaces before beginning finishing operations. <br />D. Form chamfers at top edges of panel perimeters, openings, and similar locations not formed by <br />chamfer strips, unless otherwise indicated. <br />E. Surface Defects: Limit visible surface defects to those permitted by TCA's "Tilt -up Concrete <br />Association's Guideline Specifications" for Grade A, Architectural panel surfaces. <br />3.5 CASTING TOLERANCES <br />A. Cast tilt -up concrete panels without exceeding the following tolerances: <br />1. Height and Width of Panels: <br />a. For Panels up to 20 Feet Tall: 1/4 inch wide. <br />b. For Panels 20 to 30 Feet Tall: 3/8 inch wide. <br />c. Each Additional 10 Feet in Excess of 30 Feet Tall: 1/8 inch wide. <br />2. Thickness: 3/16 inch. <br />3. Skew of Panel or Opening: Difference in length of diagonals of 1/8 inch per 72 inches <br />with a maximum difference of 1/2 inch. <br />4. Openings Cast into Panel: <br />a. Size of Opening: 1/4 inch. <br />b. Location of Centerline of Opening: 1/4 inch. <br />5. Location and Placement of Embedded Items: <br />a. Inserts, Bolts, and Pipe Sleeves: 3/8 inch. <br />b. Lifting and Bracing Inserts: As required by manufacturer. <br />c. Lateral Placement of Weld Plate Embedments: 1 inch. <br />d. Tipping and Flushness of Weld Plate Embedments: 1/4 inch. <br />6. Deviation of Steel Reinforcement Cover: Maintain minimum cover required by ACI 301. <br />TILT -UP CONCRETE 034000 - 9 <br />