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the time concrete is placed. Do not place concrete around manholes or <br />other structures until they are completed to required finish elevation and <br />alignment. All concrete driveways shall be FDOT Class 1 and a minimum of <br />6 inches thick with wire or fiber mesh reinforcement. All sidewalks shall be a <br />minimum of 4 inches thick, shall be sawcut every 5 feet, and shall have an <br />expansion joint every 30 feet. <br />1. Place concrete using methods which prevent segregation of the mix. <br />Consolidate concrete along the face of forms and adjacent to <br />transverse joints with an internal vibrator. Keep vibrator away from <br />joint assemblies, reinforcement, or side forms. Use only square - <br />faced shovels for hand -spreading and consolidation. Consolidate <br />with care to prevent dislocation of reinforcing, dowels, and joint <br />devices. Do not use vibrators to push or move concrete in forms or <br />chute. <br />2. Deposit and spread concrete in a continuous operation between <br />transverse joints, as far as possible. If interrupted for more than one- <br />half hour, place a construction joint. <br />3. Curbs and Gutters: Automatic machine may be used for curb and <br />gutter placement at Contractor's option. If machine placement is to <br />be used, submit revised mix design and laboratory test results which <br />meet or exceed the minimum herein specified. Machine placement <br />must produce curbs and gutters to the required cross-section, <br />lines, grades, finish, and jointing as specified for formed concrete. If <br />results are not acceptable, remove and replace with formed concrete <br />as specified. <br />4. Joints: Construct expansion, weakened -plane (contraction), and <br />construction joints true -to -line with face perpendicular to surface of <br />the concrete, unless otherwise indicated. Construct transverse joints <br />at right angles to the centerline, unless otherwise indicated. When <br />joining existing structures, place transverse joints to align with <br />previously -placed joints, unless otherwise indicated. <br />a. Weakened -Plane Joints: Provide weakened -plane <br />(contraction) joints sectioning concrete into areas where <br />required. Construct weakened -plane joints for a depth equal <br />to at least one-quarter concrete thickness, by sawing within <br />24 hours of placement or formed during finishing operations. <br />Place joints at intervals not to exceed 10 feet, if not <br />otherwise indicated. <br />b. Construction Joints: Place construction joints at the end of <br />all pours and at locations where placement operations are <br />stopped for a period of more than one-half hour, except <br />where such pours terminate at expansion joints. <br />Construction joints shall be as shown or, if not shown, use <br />standard metal keyway -section form of appropriate height. <br />C. Expansion Joints: <br />(1) Provide premolded joint filler for expansion joints <br />abutting concrete curbs, catch basin, manholes, <br />02576 Pavement, Sidewalk, and Driveway Replacement.doc <br />02576-6 <br />Ji07-02912 Inch W M -Vero Lake EstatesOommenlslReportslBidding Contract Specifications%02576 Pavement, Sidewalk, and Driveway Replacemenldoc <br />