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Home My WebLink AboutWWP2703471.1Ln N O F— Cn w W �X ZW w o a z O F_ Z LtJ CC THESE NOTES SHALL APPEAR ON PROJECTS FOR THE SANITARY SEWER UTILITY. 1. All work and work material shall be in conformance with the standards and specifications of the City of Renton Planning/Building/Public Works Department and the latest edition of the WSDOT/APWA Standards and Specifications, as approved and modified by the City of Renton in the Renton Standard Plans & Specifications. A set of approved plans shall be kept on site at all times during construction. 2. The hours of work in the street right of way shall be per City specifications on weekdays unless otherwise approved in writing by the Planning/Building/Public Works Department. An approved traffic control plan must be obtained prior to beginning any work within public right of way. 3. All locations of existing utilities shown are approximate and it shall be the contractor's responsibility to verify the true and correct location so as to avoid damage or disturbance. 4. A pre —construction conference and a 24 hour notice shall be required prior to starting new construction. It shall be the contractor's responsibility to secure all necessary permits prior to starting construction. (Inspection will be accomplished by a representative of the City of Renton.) It shall be the contractor's responsibility to notify the Public Works inspector 24 hours in advance of backfilling all construction. 5. Contractor is solely responsible for the means, methods and sequences of construction and for the safety of workers and others on the construction site. 6. It shall be the responsibility of the contractor to obtain street use and any other related permits prior to any construction. 7. Plans approved by the City of Renton, Public Works Department shall take precedence over all other plans. 8. A copy of these approved plans must be on the job site whenever construction is in progress. 9. The contractor shall provide the City of Renton with an as —built drawing of the sanitary sewer system, which has been stamped and signed by a licensed professional engineer or licensed professional surveyor. 10. Backfill shall be placed equally on both sides of the pipe in layers with a loose average depth of 6 inches, maximum depth of 8 inches, thoroughly tamping each layer to 95 percent of maximum density. These compacted layers must extend for one pipe diameter on each side of the pipe or to the side of the trench. Materials to complete the fill over pipe shall be the same as described. 11. Open cut road crossings for utility trenches on existing traveled roadway shall be backfilled with crushed rock and mechanically compacted unless otherwise approved by the Public Works inspector. Cuts into the existing asphalt shall be neatline cut with saw in a continuous line. A temporary mix patch must be placed immediately after backfill and compaction. A permanent hot mix patch shall be placed within 10 days and shall be per City of Renton current standards. 12. Datum shall be City of Renton, 1988 NAVD. 13. All disturbed areas shall be seeded and mulched or otherwise stabilized to the satisfaction of the Department for the prevention of on —site erosion after the completion of construction. 14. All pipe and appurtenances shall be laid on a properly prepared foundation in accordance with the standards and specifications of the City of Renton Planning/Building/Public Works Department and the latest edition of the WSDOT/APWA Standards and Specifications, as approved and modified by the City of Renton in the Renton Standard Plans & Specifications. This shall include necessary leveling of the trench bottom or the top of the foundation material, as well as placement and compaction of required bedding material, to uniform grade so that the entire length of the pipe will be supported on a uniformly dense, unyielding base. Pipe bedding shall be pea gravel 6 inches above and below the pipe. 15. Sanitary sewer pipe shall be polyvinyl chloride (PVC) rubber gasketed ASTM D 3034, SDR 35, or ductile iron class 50, unless otherwise approved by the Wastewater Utility. 16. In unimproved areas, manhole to extend minimum 6 inches and maximum 12 inches above finished grade or must have minimum 2' diameter concrete ring poured at grade. In paved area, cover must slope in all directions to match paving. SIDE SEWER NOTES 1. Prior to installation of a sanitary sewer connection, a side —sewer permit must be purchased from the City of Renton Public Works Department. 2. Types of pipe and fittings that can be used for sanitary sewers shall be approved by the Department of Public Works, Rubber or neoprene gaskets as specified by the manufacturer, shall be used on joints. 3. A minimum grade of 2% (1/4" per foot) must be maintained with 4" pipe. In the event a 2% grade cannot be maintained, the owner must grant a grade release to the City and then can install 6" pipe at a grade of 1 %. 4. For inspection of side sewer, call 24 hours in advance. The inspection phone number is on the side —sewer permit. Site must be ready for inspection and representation on the site when inspector arrives at appointed time. Side sewer and stub shall be tested per City specifications. Make the connection at the house. Do not backfill the ditch until approval is given by the inspector. Final approval will be granted after the existing septic tank has been pumped out and filled with sand. 5. Install side sewer with 2' minimum cover. 18" cover is allowed at the house if outlet is shallow. 6. If side sewer stub is not available. The contractor shall be responsible for its installation. The side sewer shall be a minimum 6" in size. If tee is not available, unless otherwise approved by the City, make tap through cast iron saddle secured to sewer main with stainless steel bands when connecting new side sewers to existing main. Plain and reinforced concrete, DI pipe, and Cl pipe sewer mains are to be core drilled. Vitrified clay pipe shall be cut and have a new tee sectioned in. All work within street right—of—way shall be done by a licensed and bonded contractor. 7. All work shall be accomplished in accordance with the Washington Industrial Safety and health Act. (WISHA) 8. All trench restoration for side sewers in the public right—of—way shall conform to the most current trench restoration as shown on dwg. #HR-23. 9. All building sewer and side sewers shall have bedding in accordance with drawing BW18C or BR09 as applicable. 10. There shall be a minimum 10 foot horizontal separation between sanitary side sewers and water services and a minimum 5 foot horizontal separation between sanitary side sewers and al other utilities. 5 347101 SW 1/4, SE 1/4, SEC 18, TWN 23N, RGE 5E, WX No, Date Revision 1 5/5/08 RESPONSE TO CITY COMMENTS Call 2 Working Days Before You Dig 1-800-424-5555 Utilities Underground Location Center By E3RA Inc. 9802 29th Ave. W. Suite 13102 CRL Everett, WA 98204 , s. 425-356-3372 - 425-356-3374 fax www.e3ra.com ..° ---- -74 CHECKED FOR COMPLIANCE TO CITY STANDARDS PROJECT: Renton Triplexes Renton, WA SHEET TITLE: Sanitary Sewer Notes DESIGNER: CRL ad DRAWN BY: CRL CHECKED BY: RCE � DATE: 515108 Date Date Date JOB NO: T07250 SCALE: SHEET: 5 FILE: D