Item 18 - Traffic Signal Installation at Segerstrom Avenue and Rosewood Avenue

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CITY OF SANTA ANA SPECIFICATIONS PROJECT NO.: 25-6030 TRAFFIC SIGNAL INSTALLATION AT SEGERSTROM AVENUE AND ROSEWOOD AVENUE performance and no visible damage (apply 16,000 pound point load for 2,000,000 cycles). The FRP frame and cover shall be provided with a five (5) year guarantee. 6.12 REMOVE EXISTING MANHOLE STRUCTURES Removal of existing manholes shall be accomplished in accordance with the project plans, City of Santa Ana Standards and Design Criteria, the applicable provisions of Section 306 of the Standard Specifications, and these Special Provisions. The following is added to the third paragraph of Subsection 306-5 of the Standard Specifications: The top six inches of backfilled subgrade shall be compacted to a relative compaction of 90%. 6.13 ABANDON EXISTING SEWER MAIN The Contactor shall abandon existing pipes per Section 306-5 of the Standard Specifications, as specified herein, and as shown on the construction plans. The Contractor shall provide traffic control as required and approved by the agency having jurisdiction. Under no circumstances shall the abandonment take place before existing sewers and manholes are out of service and all flow directed to the new or alternate pipes. The abandon pipes shall be filled with sand cement slurry 1-sack (94lbs) of concrete. In lieu of slurry, the contractor may use low density cellular concrete, Elastizell (EF) or approved equal. The Contractor shall demonstrate that the pipe to be abandoned has been completely filled, without voids, by providing volume calculations for each placement of grout and materials strength tests as required by the City. The Contractor is responsible for the selection methods and material to be used. Pipe abandonment shall be coordinated with the construction sequence. Appropriate plugs shall be installed by the Contractor, and grout shall be injected in an upslope manner to remove trapped air. Samples of the outgoing water (at the exit end) shall be made until the existing grout mix is observed to be similar to the grout being injected at the inlet end. The grouting plan, and grout mix design shall be submitted to the Engineer for review and approval prior to commencement of work. 6.14 ABANDON EXISTING MANHOLE STRUCTURES The contractor shall abandon existing manhole structures in conformance to the Standard Specifications Section 306-5, as specified herein, and as shown on the construction plans and per City of Santa Ana Standard Plan No. 1209. • •