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' 40-27 BUILDING CAST -IN -PLACE CONCRETE <br />BRPH ARCHITECTS -ENGINEERS, INC. <br />' 3.10 FINISHING FORMED SURFACES <br />A. Rough -Formed Finish: As -cast concrete texture imparted by form -facing material with <br />' <br />tie holes and defects repaired and patched. Remove fins and other projections that <br />exceed specified limits on formed -surface irregularities. <br />' <br />1. Apply to concrete surfaces not exposed to view . <br />' <br />B. Smooth -Formed Finish: As -cast concrete texture imparted by form -facing material, <br />arranged in an orderly and symmetrical manner with a minimum of seams. Repair and <br />patch tie holes and defects. Remove fins and other projections that exceed specified <br />limits on formed -surface irregularities. <br />1. Apply to concrete surfaces exposed to public view, or to be covered with a <br />coating or covering material applied directly to concrete. <br />' <br />C. Related Unformed Surfaces: At tops of walls, horizontal offsets, and similar unformed <br />surfaces adjacent to formed surfaces, strike off smooth and finish with a texture <br />matching adjacent formed surfaces. Continue final surface treatment of formed <br />' <br />surfaces uniformly across adjacent unformed surfaces unless otherwise indicated. <br />' 3.11 FINISHING FLOORS AND SLABS <br />A. General: Comply with ACI 302.1 R recommendations for screeding, restraightening, <br />' and finishing operations for concrete surfaces. Do not wet concrete surfaces. <br />B. Float Finish: Consolidate surface with power -driven floats or by hand floating if area is <br />' small or inaccessible to power -driven floats. Restraighten, cut down high spots, and fill <br />low spots. Repeat float passes and restraightening until surface is left with a uniform, <br />smooth, granular texture. <br />' 1. Apply float finish to surfaces to receive trowel finish. <br />C. Trowel Finish: After applying float finish, apply first troweling and consolidate concrete <br />by hand or power -driven trowel. Continue troweling passes and restraighten until <br />surface is free of trowel marks and uniform in texture and appearance. Grind smooth <br />any surface defects that would telegraph through applied coatings or floor coverings. <br />1. Apply a trowel finish to surfaces exposed to view or to be covered with resilient <br />flooring, carpet, ceramic or quarry tile set over a cleavage membrane, paint, or <br />another thin -film -finish coating system]. <br />2. Finish surfaces to the following tolerances, according to ASTM E 1155, for a <br />randomly trafficked floor surface: <br />C06922.001.00 <br />a. Specified overall values of flatness, F(F) 30; and of levelness, F(L) 20; with <br />minimum local values of flatness, F(F) 24; and of levelness, F(L) 15; for <br />suspended slabs. <br />033000-13 <br />05-22-14 <br />