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Home My WebLink AboutR-4220161 PROJECT SUMMARY CALCULATION DETAILS • LOADING = HS20 & HS25 • APPROX. LINEAR FOOTAGE = 696 If. STORAGE SUMMARY • STORAGE VOLUME REQUIRED = 19,663 cf. • PIPE STORAGE VOLUME = 19,679 Cf. • BACKFILL STORAGE VOLUME = 0 cf. • TOTAL STORAGE PROVIDED = 19,679 cf. PIPE DETAILS • DIAMETER = 72 IN. • CORRUGATION = 50 GAGE = 16 • COATING =ALT2 • WALL TYPE = Solid • BARRELL SPACING = 36 IN. BACKFILL DETAILS • WIDTH AT ENDS = 12 IN. • ABOVE PIPE = 0 IN. • WIDTH AT SIDES = 12 IN. • BELOW PIPE = 0 IN. NOTES • ALL RISER AND STUB DIMENSIONS ARE TO CENTERLINE. ALL ELEVATIONS, DIMENSIONS, AND LOCATIONS OF RISERS AND INLETS, SHALL BE VERIFIED BY THE ENGINEER OF RECORD PRIOR TO RELEASING FOR FABRICATION. • ALL FITTINGS AND REINFORCEMENT COMPLY WITH ASTM A998. • ALL RISERS AND STUBS ARE 2%3" x Y" CORRUGATION AND 16 GAGE UNLESS OTHERWISE NOTED. • RISERS TO BE FIELD TRIMMED TO GRADE. • QUANTITY OF PIPE SHOWN DOES NOT PROVIDE EXTRA PIPE FOR CONNECTING THE SYSTEM TO EXISTING PIPE OR DRAINAGE STRUCTURES. OUR SYSTEM AS DETAILED PROVIDES NOMINAL INLETAND/OR OUTLET PIPE STUB FOR CONNECTION TO EXISTING DRAINAGE FACILITIES. IF ADDITIONAL PIPE IS NEEDED IT IS THE RESPONSIBILITY OF THE CONTRACTOR. • BAND TYPE TO BE DETERMINED UPON FINAL DESIGN. • THE PROJECT SUMMARY IS REFLECTIVE OF THE DYODS DESIGN, QUANTITIES ARE APPROX. AND SHOULD BE VERIFIED UPON FINAL DESIGN AND APPROVAL. FOR EXAMPLE, TOTAL EXCAVATION DOES NOT CONSIDER ALL VARIABLES SUCH AS SHORING AND ONLY ACCOUNTS FOR MATERIAL WITHIN THE ESTIMATED EXCAVATION FOOTPRINT. • THESE DRAWINGS ARE FOR CONCEPTUAL PURPOSES AND DO NOT REFLECT ANY LOCAL PREFERENCES OR REGULATIONS. PLEASE CONTACT YOUR LOCAL CONTECH REP FOR MODIFICATIONS. TEMPORARY COVER FOR CONSTRUCTION LOADS HEIGHT OF COVER 0%, NTECH® ENGINEERED SOLUTIONS LLC www.ContechES.com 9025 Centre Pointe Dr., Suite 400, West Chester, OH 45069 800-338-1122 513-645-7000 513-645-7993 FAX FINISHED GRADE CONSTRUCTION LOADS FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRAAMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER THE TOP OF THE PIPE. THE HEIGHT -OF -COVER SHALL MEET THE MINIMUM REQUIREMENTS SHOWN IN THE TABLE BELOW. THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC. PIPE SPAN, AXLE LOADS (kips) INCHES 18-50 50-75 75410 110-150 MINIMUM COVER (FT) 2.0 2.5 3.0 3.0 1242 48-72 3.0 3.0 3.5 4.0 78-120 3.0 3.5 4.0 4.0 126-144 3.5 4.0 4.5 4.5 "MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SURFACE. CONSTRUCTION LOADING DIAGRAM SCALE: N.T.S. ASSEMBLY SCALE: 1" = 20' DYO 14312 600 SW 10th Detention for parking expansion Renton, WA DETENTION SYSTEM A ACCESS CASTING TO BE PROVIDED AND INSTALLED BY CONTRACTOR. 7� N T a a o ao a � O d GASKET MATERIAL EO MP RISER SUFFICIENT TO PREVENT CL -- SLAB FROM BEARING ON LU RISER TO BE PROVIDED BY a - CONTRACTOR. OB 11" TYP. < rn #4 DIAGONAL TRIM BAR (TYR 4 PLACES), SEE NOTE 7. OPENING IN PROTECTION _ SLAB FOR CASTING SCOPE PIPE THIS SPECIFICATION COVERS THE MANUFACTURE AND INSTALLATION OF THE PIPE SHALL BE MANUFACTURED IN ACCORDANCE TO THE APPLICABLE THE DESIGNED DETENTION SYSTEM DETAILED IN THE PROJECT PLANS. REQUIREMENTS LISTED BELOW: MATERIAL ALUMINIZED TYPE 2: AASHTO M-36 0RASTM A-760 THE MATERIAL SHALL CONFORM TO THE APPLICABLE REQUIREMENTS LISTED BELOW: GALVANIZED: AASHTO M-36 OR ASTM A-760 ALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THE POLYMER COATED: AASHTO M-245 OR ASTM A-762 APPLICABLE REQUIREMENTS OF AASHTO M-274 OR ASTM A-92. ALUMINUM: AASHTO M-196 OR ASTM B-745 THE GALVANIZED STEEL COILS SHALL CONFORM TO THE APPLICABLE REQUIREMENTS OF AASHTO M-218 OR ASTM A-929. HANDLING AND ASSEMBLY SHALL BE IN ACCORDANCE WITH NCSP'S (NATIONAL CORRUGATED STEEL THE POLYMER COATED STEEL COILS SHALL CONFORM TO THE PIPE ASSOCIATION) FORALUMINIZED TYPE 2, GALVANIZED OR POLYMER APPLICABLE REQUIREMENTS OF AASHTO M-246 OR ASTM A-742. COATED STEEL. SHALL BE IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS FOR ALUMINUM PIPE. THE ALUMINUM COILS SHALL CONFORM TO THE APPLICABLE REQUIREMENTS OF AASHTO M-197 OR ASTM B-744. INSTALLATION SHALL BE IN ACCORDANCE WITH AASHTO STANDARD SPECIFICATIONS FOR CONSTRUCTION LOADS HIGHWAY BRIDGES, SECTION 26, DIVISION II DIVISION II OR ASTM A-798 (FOR CONSTRUCTION LOADS MAY BE HIGHER THAN FINAL LOADS. FOLLOW THE ALUMINIZED TYPE 2, GALVANIZED OR POLYMER COATED STEEL) OR ASTM MANUFACTURER'S OR NCSPA GUIDELINES. B-788 (FOR ALUMINUM PIPE) AND IN CONFORMANCE WITH THE PROJECT PLANS AND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES OR CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE WITH THE SITE ENGINEER. NOTE: THESE DRAWINGS ARE FOR CONCEPTUAL IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO FOLLOW OSHA PURPOSES AND DO NOT REFLECTANY LOCAL GUIDELINES FOR SAFE PRACTICES. PREFERENCES OR REGULATIONS. PLEASE CONTACT YOUR LOCAL CONTECH REP FOR MODIFICATIONS. SECTION VIEW REINFORCING TABLE CMP "BEARING A m B REINFORCING PRESSURE RISER (PSF) 24" a 4' 26" #5 @ 12" OCEW 2,410 4,X4, #5 @ 12" OCEW 1,780 30" 0 4'-6" 32 #5 @ 12" OCEW 2,120 4'-6" X 4'-6" #5 @ 12" OCEW 1,530 36" 0 5' 5' 38 #5 @ 10" OCEW 1,890 X 5' #5 @ 10- OCEW 1,350 42 0 V-6" 5'-6" 44" #5 @ 10" OCEW 1,720 X 6-6" #5 @ 9" OCEW 1,210 48" 06. 6' 50" #5 9 OCEW 1 600 X 6' #5 @ 8" OCEW 1,100 "ASSUMED SOIL BEARING CAPACITY OA A /�OOL aB A F� #4 DIAGONAL TRIM BAR (TYR 4 PLACES), SEE NOTE 7. 2"COVER (TYR) tiGo'e Q INTERRUPTED BAR REPLACEMENT, SEE NOTE 6. OPENING I PROTECTIO SLAB FOI CASTINI STANDARD STANDARD REINFORCING, REINFORCING, y mB INTERRUPTED BAR SEE TABLE SEE TABLE REPLACEMENT, SEE NOTE 6. ROUND OPTION PLAN VIEW SQUARE OPTION PLAN VIEW NOTES: 1. DESIGN IN ACCORDANCE WITH AASHTO, 17th EDITION. 7. TRIM OPENING WITH DIAGONAL #4 BARS, EXTEND BARS A MINIMUM OF 12" BEYOND OPENING, BEND 2. DESIGN LOAD HS25. BARS AS REQUIRED TO MAINTAIN BAR COVER. 3. EARTH COVER = V MAX. 8. PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED AND INSTALLED BY CONTRACTOR. 4. CONCRETE STRENGTH = 3,500 psi 9. DETAIL DESIGN BY DELTA ENGINEERING, BINGHAMTON, NY. 5. REINFORCING STEEL =ASTM A615, GRADE 60. 6. PROVIDE ADDITIONAL REINFORCING AROUND MANHOLE CAP DETAIL OPENINGS EQUAL TO THE BARS INTERRUPTED, HALF EACH SIDE. ADDITIONAL BARS TO BE IN SCALE: N.T"S. THE SAME PLANE. erpinearana cony n«� ® n PROJECT No.: BED. No.: DATE: E9 a S.Mi�;LLC(� t.°) Na•,arl .vi/ w�l%uT_ CwIJ DY014312 600 SW 10th 9015 14312 3/a/2022 i ��bap reo�°c C RI NTECH aw h Fa.I «.Ira mpnorwnnen raaasald �► �` r� DESIGNED: DRAWN: �`°'I"m"�m"'r"°°"`°` ENGINEERED SOLUTIONS LLC CMP DETENTION SYSTEMS Detention for parking expansion DYO DYO e+«eawy alecreime any )repo www.ContechES.com Renton, WA CHECKED: APPROVED: waepmvias between he wpDlied im°rmallo"pp«, wnid, CONTECH DYO DYO 9025 Centre Pointe Dr. Suite 400 West Chester OH 45069 ��kmyn�e1w"Neagd DYODS DETENTION SYSTEM .c�pre q°ilaNliyr°r aaaieaa«�mia.mq.mmmware« 800-338-1122 513-645-7000 513-645-7993 FAX DRAWING SHEET NO.: D3 I... mm,mall°°aped"awdrem. DATE REVISION DESCRIPTION BY 1 CCP SUBMITTAL #1 lal NO. REVISION J U_ W 0 Q 10 INITIAL FILL ENVELOPE - - MINIMUM WIDTH DEPENDS ON SITE CONDITIONS AND ENGINEERING JUDGEMENT DETENTION SYSTEMS - CMP DETENTION I CMP DRAINAGE Material Location Description Material Designation Designation Rigid or Flexible Pavement (if applicable) Road Base (if applicable) Geotextile Layer Non -Woven Geotextile CONTECH C-40 or Engineer Decision for consideration to prevent soil C-45 migration into varying soil types Backfll Well graded granular material AASHTO M 145-A-1, Placed in 8" +/- loose lifts and compacted to 90% which may contain small A-2, A-3 Standard Proctor Per AASHTO T 99 amounts of silt or clay. Bedding Stone Well graded granular bedding AASHTO M43 - Engineer to determine if bedding is required. Pipe material w/maximum particle 3,357,4,467, 5, 56, 57 may be placed on the trench bottom of a relatively size of 3" loose, native suitable well graded & granular material. For Arch pipes it is recommended to be shaped to a relatively flat bottom or fine -grade the foundation to a slight v-shape. Unsuitable material should be over -excavated and re -placed with a 4%6" layer of well graded & granular stone per the material designation. See AASHTO 26.3.8.1126.5.3 Bedding info. Geotextile Layer Non -Woven Geotextile CONTECH C-40 or Engineer Decision for consideration to prevent soil C-45 migration into varying soil types Note: Backfill using controlled low -strength material (CLSM, "flash fill" or Towable fi/17 when the spacing between the pipes will not allow for placement and adequate compaction of the backfill. PRIOR TO PLACING THE BEDDING, THE FOUNDATION MUST BE CONSTRUCTED TO A UNIFORM AND STABLE GRADE. IN THE EVENT THAT UNSUITABLE FOUNDATION MATERIALS ARE ENCOUNTERED DURING EXCAVATION, THEY SHALL BE REMOVED AND BROUGHT BACK TO THE GRADE WITH A FILL MATERIALAS APPROVED BY THE ENGINEER. HAUNCH ZONE MATERIAL SHALL BE PLACED AND UNIFORMALLY COMPACTED WITHOUT SOFT SPOTS. BACKFILL WHEN PLACING THE FIRST LIFTS OF BACKFILL IT IS IMPORTANT TO MAKE SURE THAT THE BACKFILL IS PROPERLY COMPACTED UNDER AND AROUND THE PIPE HAUNCHES. BACKFILL SHALL BE PLACED SUCH THAT THERE IS NO MORE THAN ATWO LIFT (16") DIFFERENTIAL BETWEEN ANY OF THE PIPES AT ANYTIME DURING THE BACKFILL PROCESS. THE BACKFILL SHALL BE ADVANCED ALONG THE LENGTH OF THE DETENTION SYSTEM AT THE SAME RATE TO AVOID DIFFERENTIAL LOADING ON THE PIPE. OTHER ALTERNATE BACKFILL MATERIAL MAY BE ALLOWED DEPENDING ON SITE SPECIFIC CONDITIONS, AS APPROVED BY SITE ENGINEER. 0% NTECH" ENGINEERED SOLUTIONS LLC www'ContechES.com 9025 Centre Pointe Dr., Suite 400, West Chester, OH 45069 800-338-1122 513-645-7000 513-645-7993 FAX 2'-6" IL IL m1 L FRONT NOTE: MANWAY DETAIL APPLICABLE FOR CMP SYSTEMS WITH DIAMETERS 48"AND PLAN LARGER. MANWAYS MAYBE REQUIRED ON SMALLER SYSTEMS DEPENDING ON TYPICAL MANWAY DETAIL ACTUAL SITE SPECIFIC CONDITIONS. SCALE: N.T S. RISER (TYR) SEE DETAIL ELEVATION END NOTE: TYPICAL RISER DETAIL LADDERS ARE OPTIONAL AND ARE NOT REQUIRED FOR ALL SYSTEMS. SCALE: N.T.S. 20 MIL HOPE MEMBRANE LINER OVER TOP OF PIPE (IF REQUIRED) TYPICAL SECTION VIEW LINER OVER ROWS SCALE: N.T.S. NOTE: IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THE PROJECT, AN HDPE MEMBRANE LINER IS RECOMMENDED WITH THE SYSTEM. THE IMPERMEABLE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFER TO THE CORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL INFORMATION. DY014312 600 SW 10th Detention for parking expansion Renton, WA DETENTION SYSTEM TS OF UIRED KFILL CMP DETENTION SYSTEM INSPECTION AND CMP DETENTION INSTALLATION GUIDE IN -SITU TRENCH WALL MAINTENANCE WHEN PLOWABLE FILL IS USED, YOU MUST PREVENT PIPE FLOATATION. PROPER INSTALLATION OF A FLEXIBLE UNDERGROUND DETENTION SYSTEM IF EXCAVATION IS REQUIRED, THE TRENCH WALL NEEDS TO BE CAPABLE OF TYPICALLY, SMALL LIFTS ARE PLACED BETWEEN THE PIPES AND THEN UNDERGROUND STORMWATER DETENTION AND INFILTRATION SYSTEMS MUST WILL ENSURE LONG-TERM PERFORMANCE. THE CONFIGURATION OF THESE SUPPORTING THE LOAD THAT THE PIPE SHEDS AS THE SYSTEM IS LOADED. IF ALLOWED TO SET-UP PRIOR TO THE PLACEMENT OF THE NEXT LIFT. THE BE INSPECTED AND MAINTAINED AT REGULAR INTERVALS FOR PURPOSES OF SYSTEMS OFTEN REQUIRES SPECIAL CONSTRUCTION PRACTICES THAT SOILS ARE NOT CAPABLE OF SUPPORTING THESE LOADS, THE PIPE CAN DEFLECT. ALLOWABLE THICKNESS OF THE CLSM LIFT IS A FUNCTION OF A PROPER PERFORMANCE AND LONGEVITY. PERFORM A SIMPLE SOIL PRESSURE CHECK USING THE APPLIED LOADS TO BALANCE BETWEEN THE UPLIFT FORCE OF THE CLSM, THE OPPOSING DIFFER FROM CONVENTIONAL FLEXIBLE PIPE CONSTRUCTION. CONTECH WEIGHT OF THE PIPE, AND THE EFFECT OF OTHER RESTRAINING INSPECTION ENGINEERED SOLUTIONS STRONGLY SUGGESTS SCHEDULING A DETERMINE THE LIMITS OF EXCAVATION BEYOND THE SPRING LINE OF THE MEASURES. THE PIPE CAN CARRY LIMITED FLUID PRESSURE WITHOUT PRE -CONSTRUCTION MEETING WITH YOUR LOCAL SALES ENGINEER TO OUTER MOST PIPES. PIPE DISTORTION OR DISPLACEMENT, WHICH ALSO AFFECTS THE CLSM INSPECTION IS THE KEY TO EFFECTIVE MAINTENANCE OF CMP DETENTION LIFT THICKNESS. YOUR LOCAL CONTECH SALES ENGINEER CAN HELP SYSTEMS AND IS EASILY PERFORMED. CONTECH RECOMMENDS ONGOING, DETERMINE IF ADDITIONAL MEASURES, NOT COVERED IN THIS GUIDE, ARE IN MOST CASES THE REQUIREMENTS FOR A SAFE WORK ENVIRONMENT AND APPROPRIATE FOR YOUR SITE. PROPER BACKFILL PLACEMENTAND COMPACTION TAKE CARE OF THIS CONCERN. DETERMINE THE PROPER LIFT THICKNESS. ANNUAL INSPECTIONS. SITES WITH HIGH TRASH LOAD OR SMALL OUTLET CONTROL ORIFICES MAY NEED MORE FREQUENT INSPECTIONS. THE RATE AT BACKFILL-WELL GRADED WHICH THE SYSTEM COLLECTS POLLUTANTS WILL DEPEND MORE ON SITE FOUNDATION VELOAp 4"GRANULAR AND SMALLER SPECIFIC ACTIVITIES RATHER THAN THE SIZE OR CONFIGURATION OF THE STAGE POURSAS REQUIREDTO CONTROL FLOATATION AND PIPE SYSTEM. CONSTRUCTA FOUNDATION THAT CAN SUPPORT THE DESIGN LOADING EMBANKMENT DISTORTION/DISPLACEMENT APPLIED BY THE PIPE AND ADJACENT BACKFILL WEIGHT AS WELLAS MAINTAIN \ CLSM F/I/ INSPECTIONS SHOULD BE PERFORMED MORE OFTEN IN EQUIPMENT ITS INTEGRITY DURING CONSTRUCTION. \ / - \v EMBANKMENT WASHDOWN AREAS, IN CLIMATES WHERE SANDING AND/OR SALTING GEOTEXTILE SEPARATION �' (ABOVE AND BELOW / e •om ` j/� OPERATIONS TAKE PLACE, AND IN OTHER VARIOUS INSTANCES IN WHICH ONE IF SOFT OR UNSUITABLE SOILSARE ENCOUNTERED, REMOVETHEPOOR �\//j//\\//j / / // BEDDING) WITH UNLAYER. V \ \\/\SOILS DOWN TO A SUITABLE DEPTH AND THEN BUILD UP TO THE GRADED BEDDING LAYER. �/ "'•` /j\/j�, WOULD EXPECT HIGHER ACCUMULATIONS OF SEDIMENT OR ABRASIVE/ APPROPRIATE ELEVATION WITH A COMPETENT BACKFILL MATERIAL. THE BEIANINLARAND cruoeD �i CORROSIVE CONDITIONS. A RECORD OF EACH INSPECTION IS TO BE STRUCTURAL FILL MATERIAL GRADATION SHOULD NOTALLOW THE GRANULARAND SMALLER `//\/ // �i, /\/��\�//j\i�i\/�//\/\\\��/j; MAINTAINED FOR THE LIFE OF THE SYSTEM MIGRATION OF FINES, WHICH CAN CAUSE SETTLEMENT OF THE DETENTION \��/ WEIGHTED PIPE WITH MOBILE SYSTEM OR PAVEMENT ABOVE. IF THE STRUCTURAL FILL MATERIAL IS NOT CONCRETE BARRIERS COMPATIBLE WITH THE UNDERLYING SOILS AN ENGINEERING FABRIC SHOULD BACKFILL PLACEMENT (OR OTHER REMOVABLE WEIGHTS) MAINTENANCE BE USED AS A SEPARATOR. IN SOME CASES, USING A STIFF REINFORCING GEOGRID REDUCES OVER EXCAVATION AND REPLACEMENT FILL QUANTITIES. CMP DETENTION SYSTEMS SHOULD BE CLEANED WHEN AN INSPECTION BACKFILL MATERIAL SHALL BE WORKED INTO THE PIPE HAUNCHES BY MEANS OF REVEALS ACCUMULATED SEDIMENT OR TRASH IS CLOGGING THE DISCHARGE GEOGRID USED TO REDUCE COVER SHOVEL -SLICING, RODDING, AIR TAMPER, VIBRATORY ROD, OR OTHER EFFECTIVE THE AMOUNT OF UNDERCUT GEOGRID WASNT USED METHoos. CONSTRUCTION LOADING ORIFICE. MAXIMUM UNBALANCE LIMITED ACCUMULATED SEDI MENT AND TRASH CAN TYPICALLY BE EVACUATED �j\\ \j \ `EMBANKMENT T02LIFTS (APPROx. 16") TYPICALLY, THE MINIMUM COVER SPECIFIED FORAPROJECT ASSUMES H-20 /i\�/ THROUGH THE MANHOLE OVER THE OUTLET ORIFICE. IF MAINTENANCE IS NOT LIVE LOAD. BECAUSE CONSTRUCTION LOADS OFTEN EXCEED DESIGN LIVE PERFORMED, S RECOMMENDED, SEDIMENTAND TRASH MAYACCUMULATE IN \EMBANKMENT PIPE L PIPED \ \j\� LOADS, INCREASED TEMPORARY MINIMUM COVER REQUIREMENTS ARE FRONT OF THE OUTLET ORIFICE. MANHOLE COVERS SHOULD BE SECURELY NECESSARY. SINCE CONSTRUCTION EQUIPMENT VARIES FROM JOB TO JOB, SEATED FOLLOWING CLEANING ACTIVITIES. CONTECH SUGGESTS THATALL SYSTEMS BE DESIGNED WITH AN ACCESS/INSPECTION MANHOLE SITUATED AT IT IS BEST TO ADDRESS EQUIPMENT SPECIFIC MINIMUM COVER \ \ /\ OR NEAR THE INLET AND THE OUTLET ORIFICE. SHOULD IT BE NECESSARY TO GEOGRID UNDERCUT AND REPLACE y\ \ \/\\ \ \\ \\ \ \\ \/\ REQUIREMENTS WITH YOUR LOCAL CONTECH SALES ENGINEER DURING GET INSIDE THE SYSTEM TO PERFORM MAINTENANCE ACTIVITIES, ALL BEDDING UNSUITABLE SOILS 8- LOOSE LIFTS BEDDING YOUR PRE -CONSTRUCTION MEETING. APPROPRIATE PRECAUTIONS REGARDING CONFINED SPACE ENTRYAND OSHA GRADE THE FOUNDATION SUBGRADE TOA UNIFORM OR SLIGHTLY SLOPING GRADE. IF THE SUBGRADE IS CLAY OR RELATIVELY NON-POROUSAND THE CONSTRUCTION SEQUENCE WILL LAST FORAN EXTENDED PERIOD OF TIME, IT IS BEST TO SLOPE THE GRADE TO ONE END OF THE SYSTEM. THIS WILL IF AASHTO T99 PROCEDURES ARE DETERMINED INFEASIBLE BY THE ALLOW EXCESS WATER TO DRAIN QUICKLY, PREVENTING SATURATION OF THE GEOTECHNICAL ENGINEER OF RECORD, COMPACTION IS CONSIDERED SUBGRADE. ADEQUATE WHEN NO FURTHER YIELDING OF THE MATERIAL IS OBSERVED UNDER THE COMPACTOR, OR UNDER FOOT, AND THE GEOTECHNICAL ENGINEER OF RECORD (OR REPRESENTATIVE THEREOF) IS SATISFIED WITH THE LEVEL OF COMPACTION. GEOMEMBRANE BARRIER A SITE'S RESISTIVITY MAY CHANGE OVER TIME WHEN VARIOUS TYPES OF FOR LARGE SYSTEMS, CONVEYOR SYSTEMS, BACKHOES WITH LONG SALTING AGENTS ARE USED, SUCH AS ROAD SALTS FOR DEICING AGENTS. IF REACHES OR DRAGLINES WITH STONE BUCKETS MAY BE USED TO PLACE BACKFILL. ONCE MINIMUM COVER FOR CONSTRUCTION LOADING ACROSS SALTING AGENTS ARE USED ON OR NEAR THE PROJECT SITE, A THE ENTIRE WIDTH OF THE SYSTEM IS REACHED, ADVANCE THE EQUIPMENT GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THE TO THE END OF THE RECENTLY PLACED FILL, AND BEGIN THE SEQUENCE GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM AGAIN UNTIL THE SYSTEM IS COMPLETELY BACKFILLED. THIS TYPE OF THE POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM THE USE OF CONSTRUCTION SEQUENCE PROVIDES ROOM FOR STOCKPILED BACKFILL DIRECTLY BEHIND THE BACKHOE, AS WELLAS THE MOVEMENT OF SUCH AGENTS INCLUDING PREMATURE CORROSION AND REDUCED ACTUAL CONSTRUCTION TRAFFIC. MATERIAL STOCKPILES ON TOP OF THE SERVICE LIFE. BACKFILLED DETENTION SYSTEM SHOULD BE LIMITED TO 8- TO 10-FEET HIGH AND MUST PROVIDE BALANCED LOADING ACROSS ALL BARRELS. TO THE PROJECTS ENGINEER OF RECORD IS TO EVALUATE WHETHER SALTING DETERMINE THE PROPER COVER OVER THE PIPES TO ALLOW THE AGENTS WILL BE USED ON OR NEAR THE PROJECT SITE, AND USE HIS/HER MOVEMENT OF CONSTRUCTION EQUIPMENT SEE TABLE 1, OR CONTACT YOUR BEST JUDGEMENT TO DETERMINE IFANYADDITIONAL PROTECTIVE LOCAL CONTECH SALES ENGINEER. MEASURES ARE REQUIRED. BELOW IS ATYPICAL DETAIL SHOWING THE PLACEMENT OF A GEOMEMBRANE BARRIER FOR PROJECTS WHERE SALTING AGENTS ARE USED ON OR NEAR THE PROJECT SITE. TYPICAL BACKFILL SEQUENCE / - - - - uNv[ Eq oa•w or mEE ,e roa,oanNo EMBANKMENT / M � � / /\ °kFRL - - - - / a Q / 3 grn° a �s° •atl ld«memo anoa", «� mi, arawn«, a pro�ea cJ q.roma pm M«Yq.r, ar•maaram c°mrea«by Con„ En9lneuea Sdullon LLC (•Canrecq'). N"nMrt e ra"i,g, noranypadhareo(, may be used repmtluced a a Wh,a,gisa°v maa°ar»;modlm «lo,.,dga"waaamd coare°b. raiwmmwmpiv is aoaa alma poor, o+m regain wco repo a+«aawr areglalm.aar llaglllyor mapogwbnnr mr aIhp�tlmw�p boa°ea°daavalneawmm°n..... m°rep Irma rl..:e�w_, Naa>I9 a U ^coapb qo, aAwliylor eaip,v beaea«miasin9. inmmwere« C NTECH® ENGINEERED SOLUTIONS LLC www.ContechES.com 9025 Centre Pointe Dr., Suite 400, West Chester, OH 45069 REVISION DESCRIPTION BY 800-338-1122 513-645-7000 513-645-7993 FAX /10/2 SURVEYED: 04/01 /21 DESIGNED: AD/CH/NW DRAWN: AD/CH/NW CHECKED: CM BY I DATE I APPR I APPROVED: SCALE: AS SHOWN ONE INCH AT FULL SCALE IF NOT ONE INCH SCALE ACCORDINGLY ADDITIONAL CONSIDERATIONS BECAUSE MOST SYSTEMS ARE CONSTRUCTED BELOW -GRADE, RAINFALL CAN RAPIDLY FILL THE EXCAVATION; POTENTIALLY CAUSING FLOATATION AND MOVEMENT OF THE PREVIOUSLY PLACED PIPES. TO HELP MITIGATE POTENTIAL PROBLEMS, IT IS BEST TO START THE INSTALLATION AT THE DOWNSTREAM END WITH THE OUTLETALREADY CONSTRUCTED TO ALLOW A ROUTE FOR THE WATER TO ESCAPE. TEMPORARY DIVERSION MEASURES MAY BE REQUIRED FOR HIGH FLOWS DUE TO THE RESTRICTED NATURE OF THE OUTLET PIPE. CATCH BASIN INLET WATER �� _WATER PAVED PARKING LOT WATER ELEVATION IN DETENTION SYSTEM FINISHED FUNCTIONING SYSTEM OUTLET CONTROL CMP DETENTION SYSTEMS CONTECH DYODS DRAWING VERTICAL: NAVD 1988 HORIZONTAL: NAD 1983/1991 DATU M REGULATIONS SHOULD BE FOLLOWED. ANNUAL INSPECTIONS ARE BEST PRACTICE FORALL UNDERGROUND SYSTEMS DURING THIS INSPECTION, IF EVIDENCE OF SALTING/DE-ICING AGENTS IS OBSERVED WITHIN THE SYSTEM, IT IS BEST PRACTICE FOR THE SYSTEM TO BE RINSED, INCLUDING ABOVE THE SPRING LINE SOON AFTER THE SPRING THAW AS PART OF THE MAINTENANCE PROGRAM FOR THE SYSTEM. MAINTAINING AN UNDERGROUND DETENTION OR INFILTRATION SYSTEM IS EASIEST WHEN THERE IS NO FLOW ENTERING THE SYSTEM. FOR THIS REASON, IT IS A GOOD IDEA TO SCHEDULE THE CLEANOUT DURING DRY WEATHER. THE FOREGOING INSPECTION AND MAINTENANCE EFFORTS HELP ENSURE UNDERGROUND PIPE SYSTEMS USED FOR STORMWATER STORAGE CONTINUE TO FUNCTION AS INTENDED BY IDENTIFYING RECOMMENDED REGULAR INSPECTION AND MAINTENANCE PRACTICES. INSPECTION AND MAINTENANCE RELATED TO THE STRUCTURAL INTEGRITY OF THE PIPE OR THE SOUNDNESS OF PIPE JOINT CONNECTIONS IS BEYOND THE SCOPE OF THIS GUIDE. DY014312 600 SW 10th Detention for parking expansion Renton, WA DETENTION SYSTEM CITY OF RENTON Planning/Building/Public Works Dept. PROJECT No.: SEQ. No.: DATE: .5 14312 3/8/2022 DESIGNED: DRAWN: DYO DYO CHECKED: APPROVED: DYO DVO SHEET NO.: D4 01 /04/2023 IN COMPLIANCEWITH CITY OF RENTON STANDARDS DEVELOPMENT ENGINEERING 0 JChavez 01 /31 /2023 600 SW 10TH PARKING LOT STORM DRAIN & STORMWATER MANAGEMENT DETAILS DATE: 08/30/2022 FIELDBOOK: PAGE: C-507 SHEET: ---- OF: 22 co ^ L J N O O N N �, LJ H O J Z Q n 2 O U) O (0