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Home My WebLink AboutWWP2703653.3SANITARY SEWER NOTES & SPECIFICATIONS Sanitary Sewer Notes and Specifications 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 some 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. OF NE 1 /4 OF SEC 16, 7' 1 ,B, T NOT TO SCALE T 23 N, R 3 E.) E.M. MANHOLE FRAME AND COVER SEE STD. PLAN 401 ADJUSTMENT RINGS (2" MIN.) SEE NOTE 6 MORTAR JOINT(S) (3/8" MN.) SEE NOTE 5 CONE (ECCENTRIC) RUBBER GASKETED JOINTS IN ACCORDANCE WITH ASTM C-443 STEPS - POLYPROPYLENE STEPS SHALL BE INCLUDED CONCRETE RISER BY PIPE INC., OR APPROVED EQUAL. LADDER -POLYPROPYLENE SHALL BE ATTACHED TO MANHOLE MAX. PIPE SIZE -- 'E' CONCRETE SHELF PRECAST BASE SECTION OR CAST IN SHELF. 48" MH ,A, 48" ,B, 6" MIN. MIN D, 24" MIN. ,E, 21" I.D. 54" MH 54" 8" MIN. 5.5" MIN. 24" MIN. 24" I.D. 60" MH 60" 1 8" MIN. I 6" MIN. 42" MIN. 30" I.D. i NOTES: STEPS TO BE POLYPROPYLENE SAFETY STEPS. 2. STEPS ARE TO BE IN PLACE BEFORE MANHOLE SECTIONS ARE INSTALLED. 3. CASTING SHALL BE PER STD. PLAN 401. 4. MANHOLE SECTIONS TO BE OF REINFORCED PRECAST CONCRETE. 5. ALL JOINTS BETWEEN THE CONE, RISER RINGS, BRICKS AND CASTING SHALL BE GROUTED. 6. ADJUSTMENT OF THE CASTING TO GRADE SHALL BE ACCOMPLISHED WITH A COMBINATION OF ADJUSTMENT RINGS, BRICKS AND MORTAR ONLY. BRICKS SHALL BE STAGGERED TO CREATE A RUNNING BOND OR 1/2 BOND. THE USE OF SHIMS IS PROHIBITED. 7. SANITARY SEWER MANHOLES SHALL HAVE ALL INTERIOR SURFACES, INCLUDING CHANNELING, COATED (SEALED) WITH A HIGH SOLIDS URETHANE COATING; WASSER MC-AROSHIELD OR APPROVED EQUAL; COLOR OF COATING SHALL BE WHITE. 8. RUBBER GASKETED JOINTS SHALL BE IN CONFORMA14CE WITH ASTM C-443. 9. CHANNEL HEIGHT SHALL BE A MINIMUM OF 3/4 OF THE INSIDE DIAMETER OF THE LARGEST PIPE. 10. CONNECTIONS TO MANHOLE SHALL BE MADE USING GPK ADAPTOR, KOR-N-SEAL BOOTS OR APPROVED EQUAL. 11. N UNIMPROVED AREAS, MANHOLES SHALL EXTEND A MINIMUM OF 6" AND A MAXIMUM OF 12" ABOVE FINISHED GRADE OR MUST HAVE A MINIMUM 2' DIAMETER CONCRETE RINGS POURED AT GRADE. IN PAVED AREAS, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING. ti'�Y o I STD. PLAN - 400.1 + �'� PUBLIC WORKS ` DEPARTMENT STANDARD SANITARY MANHOLE �O SEPTEMBER 2011 6" BUILDING SEWER PIPE TEE WITH 6" SIDE OUTLET 1:3:5 MIX - D' CONCRE BLOCKING PROPERTY LINE Z. 3'-0" o FUTURE BUILDING SEWER W ? LX15"X13" WYE �2 x 4" STUD MARKING POST PAINTED � SURFACE EANOUT WITH WHITE WITH THE WORD "SEWER" STENCILED X CAST IRON RING & COVER IN 3" HIGH BLACK LETTERS AND �16 WIRE o(EAST JORDAN IRON WORKS WRAPPED AROUND THE STUD AND 2975 OR APPROVED EQUAL, EXTENDED TO THE TOP OF THE STUD. a_ SPECIFY "SEWER" ON LID, SEE STD. PLAN 403.1 FOR INSTALLATION) ACCEPTABLE PROCEDURES FOR SIDE SEWER CONNECTIONS TO MAIN LINES ARE AS FOLLOWS: A. VITRIFIED CLAY MAIN - CUT IN A NEW TEE USING FLEXIBLE COUPLINGS (FERNCO OR APPROVED EQUAL). B. CONCRETE MAIN - CORE -DRILLED WITH A ROMAC SADDLE (OR APPROVED EQUAL). C. PVC MAIN - CORE -DRILLED WITH A ROMAC SADDLE (OR APPROVED EQUAL) OR CUT IN A NEW TEE USING RIGID COUPLINGS. D. DUCTILE IRON MAIN - CORE -DRILLED WITH A ROMAC SADDLE (OR APPROVED EQUAL) E. MANHOLE CONNECTION - ALL CONNECTIONS TO MANHOLES SHALL BE AT MANUFACTURED KNOCK -OUTS OR THE STRUCTURE SHALL BE CORE -DRILLED. 60" ALLOWABLE MAX FOR CAST IRON PIPE OR DUCTILE IRON PIPE. 061 CO 2% MIN SLOPE HORIZONTAL L - 6" SIDE OUTLET TEE SEWER 6" MIN. MAIN CONCRETE BLOCKING ANGLE OF TEE, AT MA VAR 2Y5 ELEVATION SEWER MAIN NOTE: UNLESS OTHERWISE SHOWN ON PLAN, SIDE SEWER SHALL HAVE A MINIMUM 2.5' COVER AT PROPERTY LINE OR 3-5' LOWER THAN THE LOWEST HOUSE ELEVATION, WHICHEVER IS LOWER. TYPICAL SIDE SEWER ELEVATION Y STANDARD SIDE SEWER MD. PLAN - 406.1 PUBLIC WORKS DEPARTMENT INSTALLATION (SEWER MAIN TO PROPERTY LINE`, SEPTEMBER 2011 "AS -BUILT" NOTE: "AS -BUILT" IS BASED ON A ACTUAL FIELD SURVEY BY TOUMA ENGINEERS AND INFORMATION SUPPLIED BY CONTRACTOR. S=365306 N N W U af LLJ IL WO W� r� Z 3� ti A cN � '( Q Z �• E® ^7 a � I N .r LQ 0 N T v! W LLJ F- �- 0 Q z UJI W UJ Q J cn RECOMMENDED FAR APPROVAL BY DATE BY DATE BY DATE r� BY DATE BY DATE a , { r" t=1 Cn OC7� tTJ z� m C" vD C c) 0 zx WCn O °z b W