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required finish elevation and alignment. <br />C. Place concrete using methods which prevent segregation of mix. Consolidate concrete <br />along face of forms and adjacent to transverse joints with internal vibrator. Keep <br />vibrator away from joint assemblies, reinforcement, or side forms. Use only square - <br />faced shovels for hand -spreading and consolidation. Consolidate with care to <br />prevent dislocation of reinforcing, dowels, and joint devices. <br />D. Deposit and spread concrete in a continuous operation between transverse joints, as far <br />as possible. If interrupted for more than 1/z hour, place a construction joint. Do not use <br />concrete pumps unless they are capable of delivering 3/4" rock mix. <br />3.03 JOINTS: <br />A. General: <br />Construct expansion, weakened -plane (contraction), and construction joints true -to -Pane <br />with face perpendicular to surface of concrete. Construct transverse joints at right <br />angles to the centerline, unless otherwise indicated. <br />B. Tooled Joints: <br />Form weakened -plane joints in fresh concrete by grooving top portion with a <br />recommended cutting tool and finishing edges with a jointer. <br />C. Construction. Joints: <br />Place construction joints at the end of pours and at locations where placement <br />operations are stopped for a period of more than 12 hour, except where such pours <br />terminate at expansion joints. <br />D. Sawcut Control Joints shall be cut a minimum of 1" deep within 24 hours of concrete <br />placement and located per drawings. <br />3.04 CONCRETE FMSHING <br />A. After striking -off and consolidating concrete, smooth surface by screeding and <br />floating. Use hand methods only where mechanical floating is not possible. Adjust <br />floating to compact surface and produce uniform texture. <br />B. After floating, test surface to trueness with a 10' straightedge. Distribute concrete as <br />required to remove surface irregularities, and refloat repaired areas to provide a <br />continuous smooth finish. <br />C. Work edges of slabs, back top edge of curb, and formed joints with an edging tool, and <br />round to V? radius, unless otherwise indicated. Eliminate tool marks on concrete <br />surface. <br />D. After completion of floating and when excess moisture or surface sheen has <br />disappeared, complete surface finishing as follows: <br />Broom finish, by drawing a fine -hair broom across concretesurface, perpendicular <br />02516-3 <br />