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SANITARY SEWER NOTES AND SPECIFICATIONS
1. ALL WORK MATERIALS SHALL BE IN CONFORMANCE WITH THE
STANDARDS AND SPECIFICATION OF THE CITY OF RENTON
UTILITY DEPARTMENT AND THE LATEST EDITION OF THE
WSDOT /APWA STANDARDS AND SPECIFICATIONS.
2, ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH
"STANDARD SPECIFICATIONS FOR MUNICIPAL PUBLIC WORKS
CONSTRUCTION" PREPARED BY WASHINGTON STATE CHAPTER
AMERICAN PUBLIC WORKS ASSOCIATION, LATEST EDITION (APWA)
AND CITY OF RENTON STANDARD SPECIFICATIONS,
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. CONTRACTOR IS SOLELY RESPONSIBLE FOR THE MEANS,
METHODS AND SEQUENCES OF CONSTRUCTION AND FOR THE
SAFETY OF WORKERS AND OTHERS ON THE CONSTRUCTION SITE.
5. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO
OBTAIN STREET USE AND ANY OTHER RELATED PERMITS PRIOR
TO ANY CONSTRUCTION.
6. PLANS APPROVED BY THE CITY OF RENTON, PUBLIC WORKS
DEPARTMENT SHALL TAKE PRECEDENCE OVER ALL OTHER
PLANS
7. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB
SITE WHENEVER CONSTRUCTION IS IN PROGRESS.
8. 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.
9. 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.
10. OPEN CUT ROAD CROSSINGS FOR UTILITY TRENCHES ON
EXISTING TRAVELED ROADWAY SHALL BE BACKFILLED WITH
CRUSHED ROCK AND MECHANICALLY COMPACTED. 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.
11. DATUM SHALL BE CITY OF RENTON, 1988 NAVD.
12. 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.
13. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A
PROPERLY PREPARED FOUNDATION IN ACCORDANCE WITH
SECTION 7 OF THE CURRENT STATE OF WASHINGTON STANDARD
SPECIFICATIONS FOR ROAD AND BRIDGE CONSTRUCTION. 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.
14. SANITARY SEWER PIPE SHALL BE POLYVINYL CHLORIDE
(PVC) RUBBER GASKETED ASTM D 3034, SDR 35, OR DUCTILE
IRON CLASS 50.
15. IN UNIMPROVED AREAS, MANHOLE TO EXTEND MINIMUM 6
INCHES AND MAXIMUM 12 INCHES ABOVE FINISHED GRADE. IN
PAVED AREA, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH
PAVING.
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m o BENCHMARK: CITY OF RENTON MON # 2117
3 1/2" BRASS DISK STAMPED "CITY OF RENTON BM"
A ti IN THE NW CORNER OF CONCRETE BASE OF SIGNAL
ti J BRIDGE AT THE RAILROAD CROSSING AT THE NORTH
z ENTRANCE OF GENE COULON PARK. SIGNAL BASE
IS LOCATED SOUTH OF THE ENTRANCE ROAD INTO
GENE COULON PARK AND WEST OF RR TRACTS.
F ELEVATION = 37.25' (11.355m) NAVD 1988
'� \L SW 1/4 OF SECTION 5, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M.
LAKE PARK TOWNHOMES
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CITY OF RENTON MON #2117 \
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DETAIL BR 08),� _
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PIPE BEDDING
PER COR STD.
DETAIL BW 18c.
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EXPIRES 04/23/07
GRAPHIC SCALE
20 0 10 20
( IN FEET
1 inch = 20 ft.
CITY OF RENTON
APPROVAL FOR SITE CONSTRUCTION
1 1
CONCEPT ENGINEERING, INC.
fNS "45
5 Rainier Boulevard North
ssaquah, Washington 98027
® ) 392 -8055 FAX (425) 392 -0108 comments:
r.:,
Copyright U 1999 Concept En gineerin� =, In,. All
cD.S•�3�101
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