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ST0004(2006)-SP001030REINFORCED CONCRETE PAVEMENT REPAIRS SPECIFICATIONS FOR REPAIRS REINFORCED CONCRETE PAVEMENTS 1. All repairs are to be saw cut full depth a minimum of 12" beyond the failure or to the next joint if within Y and are to be square or rectangular in shape. 2. Complete removal of all pavement within the repair area is to be accomplished leaving clean vertical sides. Damaged vertical sides will be resawed, removed and replaced at the contractor's expense. Limit of pay will only be to the original saw line. Spoils from this activity and subgrade removal will be disposed of off -site at the contractor's expense. 3. Subgrade shall be removed to a depth of 6" below bottom of the existing pavement and cement treated base (CTB) is to be placed and compacted (to 95% standard proctor density) in place of the removed subgrade. If the removal leaves a void deeper than the 6" requirement, or if unstable material is encountered that has to be removed, then flexbase shall be placed and compacted (to 95% standard proctor density) to bring subgrade up to 6" below bottom of the existing pavement. 4. Vertical sides of repair area are to be doweled with #4 bars, epoxy embedded 6 "into the sides at 12" centers. A 24" #6 smooth dowel with dowel sleeve will be used at any transverse expansion joint that may be disturbed. See City of Coppell Standard Specifications. 5. Reinforcement steel shall be minimum #3 bar on 24" centers with 30 diameters bar laps. ( #3 - 12" lap) and shall be supported by bar chairs spaced adequately to support the weight of the concrete during placement. 6. Concrete shall consist of Type I cement at a rate of 6 sacks per CY and a compressive strength of 3500 PSI at 28 days. After placement of concrete, the entire new concrete section shall receive a coat of approved white pigmented curing compound applied by use of a sprayer capable of producing an even and thorough coverage. Six cylinders shall be obtained for testing on the 7`', 14", and 28`' day. Testing to be provided by contractor, at the sole expense of the contractor, through a City approved laboratory. Pavement may be placed in service if a strength of 3000 PSI is obtained on the 7 or 14 day breaks. If a strength of 3500 PSI is reached on the 7 or 14 day breaks, then no additional test will be required. If the 28- day break does not obtain 3500 PSI the pavement shall be removed and replaced at the contractor's expense. 7. Construction joints shall be per the City of Coppell Standard Specifications with silicon sealer at all joints as well as replacement redwood at transverse expansion joints. If no longitudinal joint is existing on the existing paving, a longitudinal joint will still be required on the new sections of full width paving. 8. Any buttons, striping or other traffic control device removed during construction shall be replaced to match pre- existing conditions. %-i 1 11 Ur 4-UrrELL • PURCHASING DEPARTMENT • 255 PARKWAY BOULEVARD • COPPELL,TEXAS 75019 REINFORCED CONCRETE PAVEMENT REPAIRS 9. A comprehensive traffic control plan is to be submitted for all job sites that is consistent with the TMUTCD for Engineering review. Implementation of the traffic control plan and all traffic control devices necessary for a safe work environment shall be provided at the sole expense of the contractor. No streets will be allowed for full closure without a thorough review by the City of Coppell. 10. A 24 -month maintenance bond at 50% of total value, on a form provided by the City, will be provided by the successful bidder. 11. Reference the City of Coppell Standard Construction Details and Subdivision Ordinance for further clarification. 12. All irrigation systems damaged will be repaired to as good or better and to the satisfaction of the property owner. It is the contractor's responsibility to obtain utility locations. Any damage to existing utilities will be the sole responsibility of the contractor. Contractor will be responsible for backfilling behind the curb, where curb has been removed and replaced, and sodding the disturbed area with like turf. All items of #14 are subsidiary to the price bid. 13. It will be the responsibility of the contractor to provide written notification to affected residents in the vicinity of the repair are prior to the beginning of work. Information to be included will be beginning and end dates of project, road closure information - either total or partial, and contact number(s). 14. LABOR CLASSIFICATION AND MINIMUM WAGE SCALE The City of Coppell is the contracting agency for this construction project. The following statute requires any contracting agency to specify the generally prevailing rate of wages in contracts that are bid. Vernon's Texas Civil Statutes - Article 5159a: "Construction of Public Works in State and Municipal or Political Subdivisions; Prevailing Wage Rate to be maintained." Pursuant to the requirements of this statute, the City of Coppell, has ascertained the following rates of wages are paid to various classifications of workers in the locality of this project. Not less than the following hourly rates shall be paid for the various classifications of work required by this project. Workers in classifications where rates are not identified shall be paid not less than the general prevailing rate of "laborer" for the various classifications of work therein listed. The hourly rate for legal holiday and overtime work shall be not less than one and one -half (1 & 1/2) times the base hourly rate. CITY OF COPPELL • PURCHASING DEPARTMENT • 255 PARKWAY BOULEVARD • COPPELL,TEXAS 75019 REINFORCED CONCRETE PAVEMENT REPAIRS The rates specified are journeyman rates. Apprentices may be used on the project and may be compensated at a rate determined mutually by the worker and employer, commensurate with the experience and skill of the worker but not at a rate not less than 60% of the journeyman's wage as shown. At no time shall a journeyman supervise more than one (1) apprentice. All apprentices shall be under the direct supervision of a journeyman working as a crew. CITY OF COPPELL • PURCHASING DEPARTMENT • 255 PARKWAY BOULEVARD • COPPELL,TEXAS 75019 5T000l- r T H E - C I T Y - O F COPPELL �P.O. 750 9 Phone: (972)304 -3679 * r Fax: (972)304 -3570 0 F It ENGINEERING DEPARTMENT FAX COVER SHEET • _ waffw.Mul R1 " .. Fax: ry '! I a -it ?—TS¢T d Date: 0 Phone: Pages: (including cover sheet) Re: CC: ❑ Urgent fdiFor Review ❑ Please Comment ❑ Please Reply ❑ As Requested eComments: IF YOUDO NOT RECEIVE ALL OF THE PAGES PLEASE CALL (972) 304 -3679 "City of Coppell Engineering - Excellence By Design"