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1 29. Inlets, Manholes and Junction Boxes (Section 425) The applicable portions of the Metropolitan Miami -Dade County Public Works Manual (latest edition), Part 1, Standard Details, as pertain to the design and construction of drainage wells and structures, are part of these Contract Documents. Section 425 -6.7 - BACKFILLING: Add the following to this sub - article: Select material shall be used for backfill adjacent to riser inlets, manholes and drainage well structures as detailed in the Plans. It shall consist of well - graded limerock or limerock and sand fill. Sand or fill having a high proportion of sand will not be accepted as select fill. All selected fill shall be approved by the Engineer prior to placing. No separate payment will be made for select fill, but shall be included in the Unit Price Bid for each particular item as indicated in the Bid Form of the Proposal. Section 425 -8.2 - Adjusting Structures: This sub - article is expanded to include: Upon completion of the Work, and prior to acceptance and final payment all such structures will be inspected by the Engineer to ensure that they are free of all debris and thoroughly cleaned. 30. Adjustment or Relocation of Valve, Meter, Mail Boxes and Pull Boxes (Section 425 -8.2) The Work under these pay items includes any adjustments, relocation (raising, or lowering) of existing valve, meter, mail boxes and pull boxes. When relocation of the box is required, the Contractor shall make all necessary arrangements with the utility companies, as the utility companies are responsible to relocate the valves and meters and valve and meter boxes. Relocation of mail boxes are the Contractor's responsibility 31. Concrete Pipe (Section 449) 449 -4.1 Special Requirements: t Rubber gaskets for concrete pipe joints shall comply with section 420. ISpecial Provisions 09/24 Page 14 of 16 Concrete Pipe shall meet the design requirements of the class of pipe called for on the Bid Form of the Proposal. Pipe design shall be based upon requirements set forth in ASTM C 76 or Special Design which meet the requirements of ASTM C 655. For pipe designated as Class S, the pipe design will meet the requirements for ASTM C 655 and the 0.01" crack and ultimate D -loads given on the Roadway and Traffic Design Standards, Index Number 205. The Process of manufacture and the details of the pipe design, including strength of the concrete, will comply with the Standard Operating Procedure for the Inspection of Precast Drainage Products. At the Contractor's option non - reinforced pipe up to and including 36" diameter, may be used in place of reinforced concrete pipe designated Class S, Class I, Il, IIl, and IV. Non - reinforced pipe shall meet the requirements of ASTM C 985 and the ultimate D -loads given on the Roadway and Traffic Design Standards, Index Number 205. such pipe shall be properly marked. Plugging of existing pipes to be abandoned in place shall comply with section 430 4.5 t Rubber gaskets for concrete pipe joints shall comply with section 420. ISpecial Provisions 09/24 Page 14 of 16