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t <br /> � � <br /> ' Cool in�redients before mixing to maintain concrete temperature at time of placement <br /> below 90 degrees F (32 degrees C). Mixinq water may be chilled, or chopped ice may be <br /> used to control temperature provided water equivalent of ice is calculated to total <br /> � amount of mixing water. Use of liquid nitrogen to cool concrete is Contractor's option. <br /> Cover reinforcint� steel with water-soaked burlap if it becomes too hot, so that steel <br /> , temperature will not. exceed the ambient air temperature immediately before <br /> embedment in concrete. <br /> Fog spray focros, reinforcing steel and subgrade just before concrete is placed. � <br /> � Use water-reducint� retardin� admixtures (Type D) when required b hi h tem r <br /> - low humidrty, or other adverse placing conditions. y � Pe atures, <br /> ' <br /> 1 • <br /> 1 . <br /> 1 � � <br /> 1 <br /> 3.06 MONOLITHIC SLAB FINISHES: - <br /> � Float Finish: Apply float finish to monolithic slab surfa <br /> other finishes as hereinafter specified, and slab surfaces wh chrarel to tbe cove edhw th <br /> ' .membrane or elastic waterproofing, membrane or elastic roofing, or sand-bed terrazzo, <br /> and as otherwise indicated. <br /> After screening and consolidating, and leveling concrete slabs, do not work surface until <br /> , ready for floating. Begin floatin� when surface water has disappeared or when concrete <br /> has stiffened sufficiently to permit operation of power-driven floats, or both. <br /> Consolidate surface with power-driven floats, or by hand-floatinR if area is small or <br /> � inaccessible to power units. Check and level surface plane so that depressions between <br /> high spots do not exceed S/16" under a 10' straightedge. Cut down high spots and fill low <br /> spots. Uniformly slope surfaces to drains. Immediately after leveling, refloat surface to <br /> ' a uniform, smooth, granular texture. <br /> I <br /> c:V(vC;KETE WORK 033I0 - 5 <br /> � <br /> 1 <br />