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' <br /> � <br /> veneer plaster, painting, or another similar system. This is an as-cast concrete surface <br /> obtained with selected form-facing material, arranged in an orderly and symmetrical � <br /> znanner with a minimum of seams or as shown. Repair and patch defective areas wit�fms <br /> and other projections completeiy removed and smoothed. <br /> 3:8 MONOLITHIC SLAB FIl�TISHES � <br /> , A. Float Finish: Apply float finish to monolithic slab surfaces to receive trowel finish and <br /> other finishes as specified; slab surfaces to be covered with membrane or elastic <br /> waterproofing,membrane or elastic roofing,or sand-bed terrazzo; and where indicated. � <br /> 1. After screeding, consolidating, and leveling concrete slabs, do not work surface <br /> until ready for floating. Begin floating, using float blades or float shoes only, � <br /> when surface water has disappeared, or when concrete has stiffened sufficientIy <br /> to permit operation of power-driven floats, or both. Consolidate surface with <br /> power-driven floats or by hand-floating if area is small or inaccessible to power ' <br /> units. Finish surfaces to tolerances of F(F} 18 (floor flatness) and F(L) 15 (floor <br /> levelness) measuted according to ASTM E 1155. Cut down high spots and fill <br /> !ow spots. Uniformly slope surfaces to drains. Immediately after leveling, <br /> cefloat surface to a uniform, smooth,granular texture. � <br /> B. After floating, begin first trowel-finish operation vsing a power-driven trowel. Begin <br /> � final troweling when surface produces a ringing sound as trowel is moved over surface. � <br /> Consolidate concrete surface by final hand-troweling operation, free of trowel znarks, <br /> uniform in texture and appearance, and finish surfaces to tolerances of F(F) 20 (floor <br /> flatness) and F(L) I7 (floor levelness) measured according to ASTM E 1155. Grind <br /> smooth any surface defects that would telegraph through appfied floor covering system. � <br /> C. Trowel and Fine Broom Pinish: Where ceramic or quarry tile is to be installed with thin- <br /> set mortar, apply a trowel finish as spec�ed, then immediately follow by slightly , <br /> scarifying the surface with a fine broom. <br /> 3.9 MISCELLANEOUS CONCRETE TTEMS <br /> A. Filling In: Fill in holes and openings left in concrete structures for passage of work by � <br /> otlaer firades, unless otherwise shown or directed, after work of other trades is in place. <br /> Miac, place, and cure conerete as specified to blend with in-place construction. Provide � <br /> other miscellaneous concrete filling shown or required to complete Work. <br /> B. Cwrbs: 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 comers, ' <br /> intersections,and terminations slightly rounded. <br /> C. Equipment Bases and Foundations: Provide machine and equipment bases and � <br /> foundations as shown on drawings. Set anchor bolts for machines and equipment to <br /> template at correct elevations, complying with diagrams or templates of manufacturer <br /> furnishing machines and equipment. <br /> 3.10 CONCRETE CURING AND PROTECTTON • � <br /> A. General: Pratect freshiy placed concrete from premature drying and excessive cold or hot � <br /> temperatures. �n hot, dry, and windy weather protect concrete from rapid moisture loss <br /> before and during fmishing operations with an evaporation-control material. Apply <br /> according to manufacturer's instructions after screeding and bull floating, but before <br /> power floating and troweling. � <br /> B. Start initial curing as soon as free water has disappeared from concrete surface after <br /> placing and fnishing. Weather permitting, keep continuously moist for not less than 7 � <br /> days. <br /> CONCRETE Page 6 of 8 <br />