Item 07 - Sewer System Management Plan 2025 Update

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CITY OF SANTA ANA APPENDIX I PROJECT NO.: XX-XXXX PROJECT TITLE reviewed with and approved by the Water Resources Division. The larger manhole cover shall be in accordance with Standard Plan No. 1211 and these Special Provisions. For larger manhole frames and covers, the Water Resources Division may require frames and covers fabricated of fiber reinforced polymer (FRP). These larger FRP manhole frame and cover sets shall be manufactured by GMI Composites, Inc., no equal. The FRP frame and cover system shall meet the following requirements: contain 45 percent to 70 percent fiber reinforcement; thermoset resin with UV inhibitors to prevent photo degredation; minimum strength to weight ratio of 750:1; integrated gasket to minimize traffic shock, abate noise and orders and prevent water entry into manhole; skid slip resistance greater than 0.6 as described in ASTM C 1028 Standard; and dimensional tolerance of 1/16-inch. The FRP frame and cover shall be designed to exceed AASHTO H-20 loading by a factor of 2.5 (125,000 pounds) and shall meet AASHTO EN124 D400 loading (89,924 pound which exceeds AASHTO Proof Load of 50,000 pounds for severe traffic service) proof load on a 250 mm round plate for 30 seconds. Documentation of certified testing results shall be submitted including complete Fatigue Loading Test with no loss of carrying 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.