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40-27 BUILDING <br />CAST -IN -PLACE CONCRETE I <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />D. Trowel and Fine -Broom Finish: Apply a first trowel finish to surfaces where ceramic or <br />quarry tile is to be installed by either thickset or thinset method. While concrete is still <br />plastic, slightly scarify surface with a fine broom. <br />Comply with flatness and levelness tolerances for trowel -finished floor surfaces. <br />E. Broom Finish: Apply a broom finish to exterior concrete platforms, steps, ramps, and <br />elsewhere as indicated. <br />Immediately after float finishing, slightly roughen trafficked surface by brooming <br />with fiber -bristle broom perpendicular to main traffic route. Coordinate required <br />final finish with Engineer before application. <br />3.12 MISCELLANEOUS CONCRETE ITEM INSTALLATION <br />A. Filling In: Fill in holes and openings left in concrete structures after work of other trades <br />is in place unless otherwise indicated. Mix, place, and cure concrete, as specified, to <br />blend with in -place construction. Provide other miscellaneous concrete filling indicated <br />or required to complete the Work. <br />B. Curbs: Provide monolithic finish to interior curbs by stripping forms while concrete is <br />still green and by steel -troweling surfaces to a hard, dense finish with corners, <br />intersections, and terminations slightly rounded. <br />C. Equipment Bases and Foundations: <br />1. Coordinate sizes and locations of concrete bases with actual equipment <br />provided. <br />2. Construct concrete bases Height as indicated, and extend base not less than 6 <br />inches in each direction beyond the maximum dimensions of supported <br />equipment unless otherwise indicated or unless required for seismic anchor <br />support. <br />3. Minimum Compressive Strength: 4000 psi at 28 days. <br />4. Install dowel rods to connect concrete base to concrete floor. <br />5. Prior to pouring concrete, place and secure anchorage devices. Use setting <br />drawings, templates, diagrams, instructions, and directions furnished with items <br />to be embedded. <br />6. Cast anchor -bolt insert into bases. Install anchor bolts to elevations required for <br />proper attachment to supported equipment. <br />D. Steel Pan Stairs: Provide concrete fill for steel pan stair treads, landings, and <br />associated items. Cast -in inserts and accessories as shown on Drawings. Screed, <br />tamp, and trowel finish concrete surfaces. <br />3.13 CONCRETE PROTECTING AND CURING <br />A. General: Protect freshly placed concrete from premature drying and excessive cold or <br />hot temperatures. Comply with ACI 306.1 for cold -weather protection and ACI 301 for <br />hot -weather protection during curing. <br />C06922.001.00 03 30 00 - 14 <br />05-22-14 ' <br />