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� DIVISION 03 Section 03300- Cast-In-Place Concrete <br /> ' 3.02 REINFORCEMENT <br /> A Accurately position and support reinforcement,and secure against displacement,. <br /> � Locate and support reinforcement to maintain minimum cover with metal chairs,runners, <br /> bolsters,spacers and hangers as required.Set wire ties with ends directed into concrete,not <br /> toward exposed concrete surfaces. <br /> ' <br /> 1. Install welded wire fabric in lengths as long as practicable;lap at least one full mesh and <br /> lace splices with wire. <br /> ' B. Joints: Locate and install construction,isolation,and control joints as indicated or required. <br /> Locate construction joints so they do not impair strength and appeazance of structure. Place. <br /> � isolation and control joints in slabs-on-ground to.stabilize differential settlement and <br /> prevent random cracking. <br /> ' C. Installation of Fmbedded Items:Set and build anchorage devices and other embedded <br /> items required for other work that is attached to or supported by cast-in-place concrete. Use <br /> setting diagrams, templates,.and instructions provided by others for locating and setting. <br /> � 3.03 CONCRETE PLACEMENT <br /> � A.Comply with ACI 304, Guide for Measuring, Mixing, Transporting, and Placing concrete, for <br /> placing concrete in a continuous operation within planned joints or sections. Do not begin <br /> concrete placement until other affected work is completed. <br /> ` 1. Consolidate placed concrete using mechanical vibrating equipment with hand <br /> rodding and tamping so that concrete is worked azound reinforcement and other <br /> embedded items and into forms. <br /> � 2. Protect concrete hom physical damage or reduced strength due to weather extremes <br /> during mixing,placing,and curing. <br /> � a. In cold weather comply with ACI 306. <br /> b. In hot weather comply with ACI 305. <br /> ' B. Finish of Footing Surface:As follows: <br /> 1. Float Finish:Apply float finish to monolithic footing surfaces when surface water has <br /> � disappeared and when concrete has stiffened sufficiently to permit use of IIoats. <br /> Consolidate-surface by hand-floating. <br /> a. Check and level surface plane to tolerances of F(F) 18 (floor flatness) and <br /> � F(L) 15 (floor levelness). Cut down high spots and fill low spots. <br /> Immediately after leveling,reIloat surface to a uniform, smooth, granular <br /> , texture. <br /> C. Curing: Protect freshly placed concrete from premature drying and excessive cold or hot <br /> temperatures. In hot, dry, and windy weather, apply an evaporation-control compound <br /> , according to manufacturer's instructions after screeding and bull IIoating,but before floating. <br /> 1. Begin initial curing as soon as free water has disappeared from exposed surfaces. <br /> � <br /> page 03300- 4 <br /> I�NNEPIN COUNTY Orono Sak Stora�e <br /> ' March 22,2002 Project No.:0031569 Contract No.:0751R2 <br />