1999-049 - Laserfiche WebLink

Home Browse Search

4a C> will be based upon hourly rates and actual materials cost to the County. The labor rates will be supplied to the Contractor prior to beginning work under this Contract. if the Contractor does not pay the invoice as presented by the County, the County reserves the right to withhold that amount from the contractor on the Final Pay for this Contract. 3.06 SIDEWALK, CONCRETE DRIVEWAY, CURB, AND COMBINED GUTTER REMOVAL AND REPLACEMENT A. SURFACE PREPARATION: I. Remove loose material from the compacted subbase surface immediately before placing concrete. 2. Proof -roll prepared subbase surface to check for unstable areas and the need for additional compaction. Do not begin paving work until such conditions have been corrected and are ready to receive ,paving. comply with requirements of FDOT Section 230, Paragraph 230-6. B. CONCRETE PLACEMENT: I.. Do not place concrete until subbase and forms have been checked for line and grade. Moisten if required to provide a uniform dampened condition at the time concrete is placed. Do not place concrete around manholes or other structures until they are completed to required finish elevation and alignment... All concrete driveways shall be FDOT Class 1 and a minimum of 6 inches thick with wire or fiber mesh reinforcement. All sidewalks shall be a minimum of 4 inches thick, shall be sawcut every 5 feet, and shall have an expansion joint every 30 feet. 2. Place concrete using methods which prevent segregation of the mix. Consolidate concrete along the face of forms and adjacent to transverse joints with an internal vibrator. Keep vibrator away from joint assemblies, reinforcement, or side forms. Use only square --faced shovels for hand -spreading and consolidation. Consolidate with care to prevent dislocation of reinforcing, dowels, and joint devices. Do not use vibrators to push or move concrete in forms or chute. 02576-7