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Home My WebLink AboutR-412818CONSTRUCTION PROVISIONS (REVISED 05116111) STANDARD SPECIFICATIONS ALL WORK, MATERIALS AND TESTING SHALL CONFORM TO THE STANDARDS OF SODS CREEK WATER & SEWER DISTRICT AND THE "STANDARD SPECIFICATIONS FOR ROAD, BRIDGE, AND MUNICIPAL CONSTRUCTION CURRENT EDITION, AS PREPARED BY THE WASHINGTON STATE DEPARTMENT OF TRANSPORTATION, AND HEREINAFTER REFERRED TO AS THE "STANDARD SPECIFICATIONS," EXCEPT AS HEREIN MODIFIED. 2, TRENCH EXCAVATION, BEDDING AND BACKFILL ALL WORK WITHIN THE RIGHT-OF-WAY SHALL COMPLY WITH ALL PERTINENT PERMITS, THE GOVERNING AGENCY'S CURRENT ROAD STANDARDS, AND THE STANDARD SPECIFICATIONS ALL MATERIAL FROM CLEARING AND GRUBBING SHALL BE HAULED TO AN APPROVED WASTE DISPOSAL SITE PROVIDED BY THE DEVELOPER/CONTRACTOR. WHEN TRENCHING THROUGH EXISTING PAVEMENT, THE PAVEMENT SHALL BE CUT ON A NEAT -LINE BY SAW CUTTING. TRENCH SIDES SHALL BE KEPT AS VERTICAL AS POSSIBLE GIVEN THE SOIL CONDITIONS. COMPACTION AND RESTORATION SHALL BE DONE AS DETAILED BELOW AND IMMEDIATELY AFTER THE TRENCH BACKFILL IS PLACED, SO AS TO CAUSE THE LEAST DISRUPTION TO TRAFFIC. ALL PAVEMENT SHALL BE CUT I F00T OUTSIDE THE EDGE OF THE TRENCH ON EACH SIDE. ANY TRENCH EXCEEDING FOUR FEET IN DEPTH SHALL BE PROVIDED WITH ADEQUATE SAFETY SYSTEMS MEETING THE REQUIREMENTS OF THE WASHINGTON STATE INDUSTRIAL SAFETY AND HEALTH ACT (WISHA), CHAPTER 49.17 RCW AND ALL REGULATIONS ADOPTED PURSUANT THERETO. THE DEVELOPER/CONTRACTOR SHALL HAVE A STRUCTURAL ENGINEER REVIEW AND STAMP ANY AND ALL SHORING PLANS AND CALCULATIONS. THE DEVELOPER/CONTRACTOR SHALL BE RESPONSIBLE FOR WORKER SAFETY AND THE DISTRICT AND THE DISTRICT'S ENGINEER ASSUME NO RESPONSIBILITY, WHEN NATIVE MATERIAL AT THE TRENCH BOTTOM IS SUITABLE FOR PIPE BEDDING, THE BOTTOM SHALL BE HAND FINISHED TO GRACE SO THAT THE PIPE WILL HAVE UNIFORM SUPPORT ALONG THE BARREL AND BELL. AFTER THE PIPE IS IN PLACE, ADDITIONAL HAND SELECTED NATIVE MATERIAL MEETING THE REQUIREMENTS FOR BEDDING MATERIAL SHALL BE PLACED AND TAMPED AROUND THE PIPE FOR A MINIMUM OF 4 INCHES ABOVE THE CROWN OF THE PIPE. WHEN NATIVE MATERIAL AT THE TRENCH BOTTOM IS STONY OR OTHERWISE NON -UNIFORM, THE TRENCH SHALL BE OVER -EXCAVATED A MINIMUM OF 6 INCHES BELOW THE SPECIFIED GRADE AND A LAYER OF PIPE BEDDING MATERIAL SHALL BE FURNISHED AND PLACED TO THE SPECIFIED GRADE. AFTER THE PIPE IS IN PLACE, ADDITIONAL HAND SELECTED NATIVE MATERIAL MEETING THE REQUIREMENTS FOR BEDDING MATERIAL SHALL BE PLACED AND TAMPED AROUND THE PIPE FOR A MINIMUM OF 4 INCHES ABOVE THE CROWN OF THE PIPE. IF THE NATIVE MATERIAL AT THE TRENCH BOTTOM IS UNSUITABLE FOR FOUNDATION PURPOSES OR WILL HAVE DIFFICULTY PROVIDING UNIFORM BEARING FOR THE PIPE, SUCH MATERIAL SHALL BE REMOVED AND REPLACED WITH A MINIMUM OF 6 INCHES OF COMPACTED FOUNDATION MATERIAL. THE BEDDING MATERIAL SHALL BE CARRIED UP EVENLY ON BOTH SIDES OF THE PIPE SIMULTANEOUSLY IN APPROXIMATELY 6-INCH LAYERS AND EACH LAYER THOROUGHLY COMPACTED WITH APPROPRIATE TOOLS IN SUCH MANNER AS TO AVOID INJURING OR DISTURBING THE COMPLETED PIPELINE. ALL BEDDING AND NATIVE MATERIAL SHALL BE STORED AWAY FROM THE EDGES OF EXCAVATION AND OFF THE PAVED ROADWAY AND SHOULDER. ALL TRENCH BACKFILL SHALL BE MECHANICALLY COMPACTED TO 95% OF THE MAXIMUM DENSITY WITHIN THE RIGHT-OF-WAY AND IN ALL AREAS (PAVED AND EXCEPT FOR TRENCHES OVER 8 FEET IN DEPTH. WHEN THE TRENCH DEPTH EXCEEDS 8 FEET, TRENCH BACKFILL UP TO 4 FEET FROM THE TOP OF THE TRENCH SHALL BE MECHANICALLY COMPACTED 70 907 OF THE MAXIMUM DENSITY. THE REMAINING TOP 4 FEET OF THE TRENCH SHALL THEN BE MECHANICALLY COMPACTED TO 95% OF THE MAXIMUM DENSITY. IN UNPAVED AREAS AND OTHER AREAS NOT SUBJECT TO VEHICULAR TRAFFIC, TRENCH BACKFILL FROM THE PIPE TO WITHIN 3 FEET OF THE SURFACE SHALL BE COMPACTED 70 90% OF THE MAXIMUM DENSITY THE UPPER 3 FEET SHALL BE COMPACTED TO 95% OF THE MAXIMUM DENSITY. ALL DENSITIES SHALL BE DETERMINED BY TESTING PER THE MODIFIED PROCTOR METHOD, ASTM D1557. THE DEVELOPER/CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING DENSITY TEST REPORTS CERTIFIED BY A PROFESSIONAL ENGINEER REGISTERED IN THE STATE OF WASHINGTON. A MINIMUM OF ONE TEST SHALL BE TAKEN WITHIN EVERY 500 FEET OF TRENCH LENGTH AND AT DEPTHS UP TO 509 OF TRENCH DEPTH, OR AS DIRECTED BY THE DISTRICT'S FIELD REPRESENTATIVE OR THE GOVERNING ROAD AGENCY. COMPACTION OF LATERALS OR SERVICE LINE TRENCHES SHALL BE TESTED WHERE DIRECTED BY THE DISTRICT'S FIELD REPRESENTATIVE OR THE GOVERNING ROAD AGENCY. TESTING OF CDF, WHEN USED AS REQUIRED BY THE GOVERNING ROAD AGENCY, SHALL BE IN ACCORDANCE WITH ASTM 04832. TRENCH BACKFILL SHALL BE PLACED IN UNIFORM LOOSE LAYERS NO MORE THAN 12 INCHES THICK AND MECHANICALLY COMPACTED AS SPECIFIED. IN ANY TRENCH WHERE THE SPECIFIED COMPACTION CANNOT BE ACHIEVED WITH NATIVE BACKFILL, THE TOP 4 FEET SHALL BE REPLACED AND COMPACTED TO 959 OF THE MAXIMUM DENSITY WITH IMPORTED BANK RUN GRAVEL. THE DISTRICT'S FIELD REPRESENTATIVE RESERVES THE RIGHT TO REQUEST A COMPACTION TEST AT ANY TIME ON THE BACKFILL MATERIAL. IN CUTS TRANSVERSE TO THE ROAD ALIGNMENT AND AT ALL UTILITY CROSSINGS, THE ENTIRE TRENCH SHALL BE BACKFILLED WITH CRUSHED SURFACING BACKFILL SHALL BE PLACED AND MECHANICALLY COMPACTED IN 12-INCH MAXIMUM LIFTS. AFTER BACKFILL AND COMPACTION, AN IMMEDIATE COLD MIX PATCH SHALL BE PLACED AND MAINTAINED IN A MANNER ACCEPTABLE TO THE GOVERNING ROAD AGENCY UNTIL REPLACED WITH PERMANENT SURFACING. ALL PIPE AND FITTINGS SHALL BE LAID "IN THE DRY" UNLESS OTHERWISE APPROVED BY ENGINEER. TRENCH EXCAVATIONS SHALL BE DEWATERED BY USING WELL POINT SYSTEMS, SUMPS WITH PUMPS OR OTHER METHODS APPROVED BY THE DISTRICT. DEWATERING SYSTEMS SHALL BE USED IN ACCORDANCE WITH GOOD STANDARD PRACTICE AND SHALL BE EFFICIENT ENOUGH TO LOWER THE WATER LEVEL IN ADVANCE OF THE EXCAVATION AND MAINTAIN IT CONTINUOUSLY TO KEEP THE TRENCH BOTTOM AND SIDES FIRM AND DRY. DEVELOPER/CONTRACTOR SHALL SUBMIT THE DEWATERING PLAN TO THE DISTRICT FOR REVIEW AT LEAST 10 DAYS PRIOR TO COMMENCING ANY DEWATERING WORK. ALL DEWATERING EFFLUENT SHALL BE ROUTED THROUGH A DEWATERING POND PRIOR TO RELEASE. FOR REFERENCE ONLY. SEE APPROVED SOOS CREEK SEWER PLANS u m GROUNDWATER SHALL BE CONTROLLED SUCH THAT SOFTENING OF THE z BOTTOM OF EXCAVATIONS OR FORMATION OF QUICK" CONDITIONS OR w 6. SEWER MAIN TESTING "BOILS" DURING EXCAVATION SHALL BE PREVENTED AND NO SOIL SHALL o BE ERODED INTO THE EXCAVATION FROM THE SIDES OF EXCAVATION. GRAVITY SEWERS AND APPURTENANCES SHALL BE TESTED AFTER ¢ DEWATERING SYSTEMS SHALL BE DESIGNED AND OPERATED SO AS TO BACKFILLING BY THE LOW-PRESSURE AIR METHOD IN ACCORDANCE WITH PREVENT REMOVAL OF THE NATURAL SOILS. THE DEVELOPER/CONTRACTOR SECTION 7-17.3(2) OF THE STANDARD SPECIFICATIONS, EXCEPT WHERE SHALL AT ALL TIMES HAVE ON HAND SUFFICIENT PUMPING EQUIPMENT AND THE GROUND WATER TABLE IS SUCH THAT THE DISTRICT MAY REQUIRE MACHINERY IN GOOD WORKING CONDITION FOR ALL ORDINARY THE INFILTRATION TEST. FINAL ACCEPTANCE OF THE SEWER MAIN EMERGENCIES, INCLUDING POWER OUTAGES, AND SHALL HAVE AVAILABLE INSTALLATION WILL BE SUBJECT TO THE DISTRICT'S RESOLUTION NO. AT ALL TIMES COMPETENT WORKERS FOR THE OPERATION OF SAID 1904-S, WHICH ALLOWS A MAXIMUM PONDING DEPTH OF 3/4-INCH. IN < EQUIPMENT. THE EVENT OF CONFLICTS BETWEEN THE STANDARDS ESTABLISHED IN DEVELOPER/CONTRACTOR SHALL CONTROL SURFACE RUNOFF SO AS TO RESOLUTION NO. 1904-5 AND THE STANDARDS SPECIFIED IN SECTION ' m 7-17.3(2) OF THE STANDARD SPECIFICATIONS, WE STANDARDS OF THE PREVENT ENTRY COLLECTION OF WATER IN EXCAVATIONS AND SHALL RESOLUTION WILL TAKE PRECEDENCE. i MAINTAIN THE UNDISTURBED STATE OF THE FOUNDATION SOILS AND ALLOW THE PLACEMENT OF ANY BACKFILL TO THE REQUIRED DENSITY. THE 7. REPAIR OF PIPELINE FAILURES RELEASE OF GROUNDWATER TO ITS STATIC LEVEL SHALL BE STATE PERFORMED BROKEN OR OTHERWISE DEFECTIVE PIPE SHALL BE REMOVED AND NATURAL FOUNDATION SOILS, PREVENT DISTURBANCE COMPACTED IN SUCH A MANNER AS MAINTAIN THE UNDISTURBED STATE OF THE REPLACED. REPAIR BANDS OR CLAMPS SHALL NOT BE USED 70 REPAIR TR BACKFILL, AND PREVENT FLOTATION OR MOVEMENT OF STRUCTURES AND BROKEN PIPE. PIPELINES. B. JACKED CROSSING DEVELOPER/CONTRACTOR SHALL BE RESPONSIBLE FOR COMPLYING KITH AT LOCATIONS AS REQUIRED BY THE DISTRICT OR GOVERNING ROAD ALL PERMIT REQUIREMENTS AND PROVISIONS FOR MONITORING AND AGENCY, OR AS PROPOSED BY THE DEVELOPER/CONTRACTOR, SEWER MAIN MANAGING WATER DISCHARGED FROM THE EXCAVATION. CROSSINGS OF ARTERIAL STREETS SHALL BE MADE BY JACKING, DRIVING, 3. CONNECTION TO EXISTING SEWER SYSTEM OR AUGURING A STEEL CASING PIPE BENEATH THE SURFACE. ALIGNMENT AND GRADE OF CASINGS FURNISHED SHALL BE SUCH THAT NO ADDITIONAL CONNECTIONS TO EXISTING LINES SHALL BE MADE ONLY WITH THE WRITTEN FITTINGS ARE NECESSARY TO MAKE THE CONNECTION. IF THE CASING APPROVAL OF SODS TERDEVELOPER/CONTRACTOR CREEK S ALL W N07IFY& THE RDISTRICDIST'T'S FIELD CT. THE THE SCASING WITH MNOT MEETIOIST SAINDM NDONED AND IA NEW BEFILLING AINSTTALLEDB TO MEET q�P oD D. , REPRESENTATIVE AND OTHER UTILITIES AT LEAST 46 HOURS IN ADVANCE THE LINE AND GRADE REQUIREMENTS. NO OPEN EXCAVATION SHALL BE ay Rw OF ANY CONSTRUCTION AND MAKE THE NECESSARY ARRANGEMENTS IMTH MADE CLOSER THAN 6 FEET FROM THE EDGE OF PAVEMENT °' z THE DISTRICT'S FIELD REPRESENTATIVE FOR THE CONNECTION TO THE EXISTING SEWER SYSTEM. THE DEVELOPER/CONTRACTOR SHALL FURNISH DIAMETER OF CASING PIPE SHALL BE SUFFICIENT TO ALLOW INSTALLATION ALL MATERIAL, EQUIPMENT AND LABOR NECESSARY FOR MAKING THE OF THE SEWER. WALL THICKNESS SHALL BE SUFFICIENT TO WITHSTAND ,� 39374 �y CONNECTION UNDER THE SUPERVISION OF THE DISTRICT. THE 48-HOUR INSTALLATION FORCE AND HIGHWAY LOADING WITH A MINIMUM THICKNESS NOTICE REQUIREMENT SHALL NOT COUNT SATURDAYS, SUNDAYS, AND OF 1/4-INCH. AFTER THE SEWER MAIN HAS BEEN ADJUSTED TO GRADE, 7Bf+aL' HOLIDAYS. MOIST SAND SHALL BE TAMPED INTO THE CASING PIPE SO THAT ALL 11114119 WORK SHALL NOT BE STARTED UNTIL ALL OF THE MATERIAL, EQUIPMENT VOIDS WILL BE FILLED. MANUFACTURED CASING SPACERS THAT PROHIBIT AND LABOR NECESSARY TO PROPERLY COMPLETE WORK IS ASSEMBLED ON MOVEMENT OF THE PIPE IN ANY DIRECTION WITHIN THE CASING MAY BE THE SITE. ONCE WORK IS STARTED ON A CONNECTION, IT SHALL PROCEED USED IN LIEU OF FILLING THE VOID BETWEEN THE SEWER MAIN AND THE CONTINUOUSLY WITHOUT INTERRUPTION AND AS RAPIDLY AS POSSIBLE CASING WALL WITH SAND. UNTIL THE CONNECTON IS COMPLETED. BEFORE ORDERING MATERIALS FOR 10, EXISTING UTILITIES Y Q ANY CONNECTION TO AN EXISTING MANHOLE, DEVELOPER/CONTRACTOR W r U SHALL EXCAVATE THE MANHOLE AND VERIFY OUTSIDE DIAMETER OF ALL EXISTING UTILITIES SHOWN ON ANY REFERENCE DRAWINGS PROVIDED BY PIPES FOR DETERMINING TIDES OF FIT17NUS TO BE USED. ALL WORK THE DISTRICT HAVE BEEN PLOTTED FROM THE BEST INFORMATION SHALL BE COORDINATED WITH THE DISTRICT'S FIELD REPRESENTATIVE. THE AVAILABLE TO THE DISTRICT. THE DEVELOPER/CONTRACTOR SHALL BE ¢� o EXISTING SEWERS SHALL REMAIN IN SERVICE AT ALL TIMES. RESPONSIBLE FOR LOCATING ALL EXISTING UTILITIES WELL ENOUGH IN ADVANCE OF THE EXCAVATION TO PREVENT DAMAGE DURING CONNECTIONS TO SANITARY SEWER MANHOLES SHALL BE MADE USING A CONSTRUCTION, THE DEVELOPER/CONTRACTOR SHALL BE RESPONSIBLE oa ua o o SAND COLLAR, A CONCRETE COUPLING OR A KOR-N-SEAL BOOT THE FOR ANY DAMAGE RESULTING FROM HIS OPERATIONS ON THE PROJECT. PIPE TO MANHOLE CONNECTION SHALL BE WATERTIGHT. ANY LEAKS IN THE 11. WARRANTY PERIOD COUPLINGS OR OTHER AREAS CREATED WHILE CONNECTING TO THE EXISTING MANHOLE SHALL BE SEALED WITH STRATA TECH ST-520 THE DEVELOPER MAKING THE APPLICATION FOR A LINE EXTENSION SHALL `. INJECTION RESIN OR APPROVED EQUAL. BE RESPONSIBLE FOR THE MATERIALS AND FOR SATISFACTORY OPERATION 4Am DEVELOPER/CONTRACTOR SHALL RE -CHANNEL EXISTING MANHOLES AS OF THE FACILITY FOR A PERIOD OF ONE YEAR FROM THE DATE OF NECESSARY TO SMOOTHLY DIRECT THE FLOW INTO THE EXISTING SYSTEM. ACCEPTANCE OF THE COMPLETED PROJECT AND THE BILL OF SALE TO THE �/ I DISTRICT 0 /� 6 ti ALL WATER AND/OR CONSTRUCTION DEBRIS SHALL BE REMOVED FROM NEW SEWERS AND NOT BE PERMITTED TO ENTER THE EXISTING SYSTEM. THE DEVELOPER/CONTRACTOR SHALL BE RESPONSIBLE FOR FLUSHING OUTAND OTHER LEA DEBRIS NING ANY HAS STINENTERDSEWERS INTOAS WHICH RESULGRAVTL, ROO THE yriNi 2 $ DEVELOPER'S/CONTRACTOR'S OPERATIONS, AND SHALL PAY FOR REPAIR �� 2 y TO LIFT STATIONS OR OTHER FACILITIES DAMAGED BY SUCH DEBRIS. ALL i W$a m FLUSHING WATER SHALL BE PUMPED FROM UPSTREAM MANHOLES OR z i SEWER LINES AND SHALL NOT BE ALLOWED TO ENTER THE EXISTING I g €g SEWER. ` ,W 3 '" 3 o i a ^Z _ 4. SEPARATION OF UTILITIES c: z MINIMUM SEPARATION BETWEEN SEWER AND WATER MAINS SHALL CONFORM (1 �W a ■+r p TO SECTION C7-9.1 OF THE "CRITERIA FOR SEWAGE WORKS DESIGN", _ £ z z CURRENT EDITION, AS PUBLISHED BY THE DEPARTMENT OF ECOLOGY. MINIMUM SEPARA7ON BETWEEN OTHER UTILITIES SHALL BE 6 INCHES WITH - 'a A SAND CUSHION. ¢ Q K PUGET SOUND ENERGY VAULTS, HAND HOLES AND LIGHT STANDARDS SHALL BE LOCATED NO CLOSER THAN 10 FEET FROM ANY SEWER MAINS AND STUB SERVICES. DEVELOPER/CONTRACTOR SHALL BE RESPONSIBLE FOR COORDINATION OF VAULTS, HAND HOLES, AND LIGHT STANDARDS WITH THE SEWER STUB SERVICES. NO CONSTRUCTION SHALL START UNTIL THE DEVELOPER/CONTRACTOR HAS FURNISHED THE DISTRICT WITH A WORK N/ SKETCH FROM PUGET SOUND ENERGY OR A SIGNED HOLD HARMLESS 00.0 Z AGREEMENT (FORM SUPPLIED BY THE DISTRICT) IS PROVIDED. LLJ Z O 5 WHEN DIGGING THRUST BLOCKING FITTINGS ON EXISTING PIPELINES, TEMPORARY Q O U) BLOCKING SHALL BE INSTALLED TO PREVENT BLOWOUTS, BLOCKING SHALL > Z i ALLOW FOR ANY CONNECTIONS TO THE FITTING TO BE REMOVED WITHOUT > l^ W W o DAMAGING THE FITTING. THRUST BLOCKING SHALL CONFORM TO THE co H Z of STANDARD DETAILS WHERE UNFAVORABLE GROUND CONDITIONS ARE x g a ENCOUNTERED, SPECIAL BLOCKING MAY BE REQUIRED AS DIRECTED BY THE LJ J Q W Z DISTRICT IN THE FIELD. W LLJ Z O Lu = U U) LLU W U F O oz$ U)i p BASE MAP BEET 5 BF 7