The URL can be used to link to this page

Home My WebLink About20_West Babcock Chamber PROJECT SUMMARY CALCULATION DETAILS •LOADING=HS20&HS25 •APPROX.LINEAR FOOTAGE=65 If. STORAGE SUMMARY •STORAGE VOLUME REQUIRED=1,560 cf. •PIPE STORAGE VOLUME=817 cf. •BACKFILL STORAGE VOLUME=763 cf. •TOTAL STORAGE PROVIDED=1,580 cf. PIPE DETAILS •DIAMETER=48 IN. •CORRUGATION=2 2/3x1/2 •GAGE=16 •COATING=ALT2 •WALL TYPE=Perforated •BARRELL SPACING=24 IN. BACKFILL DETAILS •WIDTH AT ENDS=30 IN. •ABOVE PIPE=12 IN. •WIDTH AT SIDES=24 IN. •BELOW PIPE=12 IN. 65'-0" 0 v 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%js x Y'r 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. IFADDITIONAL 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 a 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. ASSEMBLY 3 PLEASE CONTACT YOUR LOCAL CONTECH REP FOR up MODIFICATIONS. SCALE: 1 rr = 1 Or d The design and Information shown on this drawing Is p—lded PROJECT No.: SEQ.No.: DATE: as a service to the project owner,engineer cd contractor by Contach Enginsered Solutions LLC r"Contech').Neither this /� A�I�_\ITCAIJ 8474 13489 2/8/2022 or, drawing,noranymnthereof,may be used,reproduced or C�i►NTECH \\� ` �� DY013489 WEST BABCOCK g modified In any manner without the poor written consent of i P ��.,��` `�r� DESIGNED: DRAWN: Contach.Failure to comply cl.im.s done at the y oruser's ponsib risk tyforand WEST BABCOCK CHAMBER Contech expressly tlisclaims any liability or responsibility for ENGINEERED SOLUTIONS LLC CMP DETENTION SYSTEMS DYO DYO Fsuch use. r If discre cies between thesu lied information which www.ContechES.com Bozeman, MT CHECKED:DYO APPROVED:DVO Pan PP Pon CONTECH he drawingis based and actual had cenditiens are encountered DYODS 9025 Centre Pointe Dr.,Suite 400, West Chester,OH 45069 DETENTION SYSTEM SHEET NO.: D� d as site work progresses,these discrepancies must be reported X to Contech immediately forr_e 1uation ofthedesign.Contech W accepts no liability for designs based on missing,incomplete or 800-338-1122 513-645-7000 513-645-7993 FAX DRAWING inaccomes,information supplied!b ethers. DATE REVISION DESCRIPTION BY g Infiltration Systems-CMP Infiltration&CMP Perforated Drainage Pipe 7 Material Location Description Material Designation 2'-6" 0 0 0 0 0 0 0 0 0 0 0 o Designation W W A Rigid or Flexible Pavement a a o O O O O O O O O O O O O (if applicable) S Q Road Base(if applicable O O O O O O O O O O O 0 0 0 0 0 0 0 0 0 0 0 0 0 Geotextile Layer Non-Woven Geotextile CONTECH C40 Engineer Decision for consideration to prevent soil O O O O O O O O A or C45 migration into varying soil types.Wrap the trench only. 6 0 0 0 0 0 0 o Backfill Infiltration pipe systems have AASHTO M 145- Material shall be worked into the pipe haunches by FRONT a pipe perforation sized of A-1 or AASHTO means of shovel-slicing,rodding,air-tamper,vibratory 0 o O O O O rn 3/8"diameter.An open M 43-3,4 rod,or other effective methods. Compaction of all 2-6 W graded,free draining stone, placed fill material is necessary and shall be IXNOTE: with a particle size of%"—2 considered adequate when no further yielding of the I OR CMP 4 CMP > %"diameter is recommended. material is observed under the compactor,or under F� PIPE SYSTEMS WITH DIAMETERS MANWAY DETAIL APPLICABLE F AND O O * foot,and the Project Engineer or his representative is 0 o satisfied with the level of compaction" PLAN LARGER.MANWAYS MAY BE REQUIRED Bedding Stone Well graded granular bedding AASHTO M43- For soil aggregates larger than 3/8"a dedicated ON SMALLER SYSTEMS DEPENDING ON O O material w/maximum particle 3,357,4,467,5, bedding layer is not required for CMP.Pipe may be TYPICAL MANWAY DETAIL ACTUAL SITE SPECIFIC CONDITIONS. size of 3" 56,57 placed on the trench bottom comprised of native O O suitable well graded&granular material.For Arch HAUNCH ZONE pipes it is recommended to be shaped to a relatively SCALE: N.T.S. O O flat bottom or fine-grade the foundation to a slight RISER(TYR) 0 0 0 0 0 o v-shape.Soil aggregates less than 3/8"and unsuitable SEE DETAIL material should be over-excavated and re-placed with a 4"-6"layer of well graded&granular stone per the material designation. Geotextile Layer None None Contech does not recommend geotextiles be placed 3 �q under the invert of Infilitration systems due to the propensity for geotextiles to clog over time. A 2 //\/\ / / Note:The listed AASHTO designations are for gradation only. The stone must also be angular and clean. INITIAL FILL ENVELOPE —— 2 2/3"x 1/2" o o 0 o o 0 0 CORRUGATION-STEEL o ti 0 0 0 0 0 0 0 MINIMUM WIDTH DEPENDS ON SITE CONDITIONS AND ENGINEERING JUDGEMENT. AND ALUMINUM CMP EDGE 0 0 0 0 0 0 0 0 EDGE SPACING EQUAL ,— 0 FOUNDATION/BEDDING PREPARATION ON BOTH SIDES 2 8" COILWIDTH ELEVATION END PRIOR TO PLACING THE BEDDING,THE FOUNDATION MUST BE CONSTRUCTED TO OPEN AREA=3.76 SQ IN/SQ FT NOTE: 2 A UNIFORM AND STABLE GRADE. IN THE EVENT THAT UNSUITABLE FOUNDATION TYPICAL RISER DETAIL LADDERS ARE OPTIONALAND ARE NOT MATERIALS ARE ENCOUNTERED DURING EXCAVATION,THEY SHALL BE REMOVED REQUIRED FOR ALL SYSTEMS. AND BROUGHT BACK TO THE GRADE WITH A FILL MATERIALAS APPROVED BY SCALE: N.T.S. THE ENGINEER. 20 MIL HDPE MEMBRANE 3"x 1"CORRUGATION- LINER OVER TOP OF PIPE HAUNCH ZONE MATERIAL SHALL BE PLACED AND UNIFORMLY COMPACTED WITHOUT STEEL AND ALUMINUM 0 o o o cjs f o o o (IF REQUIRED) SOFT SPOTS. CMP o o o 0 o (COIL PROVIDED FROM c. BACKFILL CONTECH LANTANA,FL o 0 0 0 0 0 0 0 LIMITS OF MATERIAL SHALL BE PLACED IN 8"-10"MAXIMUM LIFTS.INADEQUATE COMPACTION CAN PLANT) 3 `bIL WIDTH REQUIRED LEAD TO EXCESSIVE DEFLECTIONS WITHIN THE SYSTEM AND SETTLEMENT OF THE BACKFILL SOILS OVER THE SYSTEM. BACKFILL SHALL BE PLACED SUCH THAT THERE IS NO MORE OPEN AREA=4.16 SQ IN/SQ FT O O O O THAN A TWO-LIFT DIFFERENTIAL BETWEEN THE SIDES OF ANY PIPE IN THE SYSTEM AT o o SYSTEM o 0 ALL TIMES DURING THE BACKFILL PROCESS. BACKFILL SHALL BE ADVANCED ALONG DIAMETER VARIES VARIES THE LENGTH OF THE SYSTEM AT THE SAME RATE TO AVOID DIFFERENTIAL LOADING 5"x 1"CORRUGATION-STEEL ONLY o ON ANY PIPES IN THE SYSTEM. EDGE SPACING EQUAL ON BOTH SIDES U O O O O EQUIPMENT USED TO PLACE AND COMPACT THE BACKFILL SHALL BE OF A SIZE AND U d 0 0 0 0 0 0 o 0 0 0 0 0 0 0 0 0 0 TYPE SO AS NOT TO DISTORT,DAMAGE,OR DISPLACE THE PIPE. ATTENTION MUST r o 0 0 o o 0 0 0 o o o BE GIVEN TO PROVIDING ADEQUATE MINIMUM COVER FOR SUCH EQUIPMENT. 0 0 0 0 0 0 0 0 0 0 0 MAINTAIN BALANCED LOADING ON ALL PIPES IN THE SYSTEM DURING ALL SUCH OPERATIONS. __—] 9@2.711"=24.399" " OTHERALTERNATE BACKFILL MATERIAL MAY BE ALLOWED DEPENDING ON SITE 2.711 COILWIDTH TYPICAL SECTION VIEW SPECIFIC CONDITIONS. REFER TO TYPICAL BACKFILL DETAIL FOR MATERIAL OPEN AREA=3.33 SQ IN/SQ FT LINER OVER ROWS REQUIRED. NOTES: SCALE: N.T.S. 1. PERFORATIONS MEET AASHTO AND ASTM SPECIFICATIONS. NOTE:IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR 2. PERFORATION OPEN AREA PER SQUARE FOOT OF PIPE IS BASED ON THE PROJECT,AN HDPE MEMBRANE LINER IS RECOMMENDED WITH THE SYSTEM. THE NOMINAL DIAMETER AND LENGTH OF PIPE. THE IMPERMEABLE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE 3. ALL DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES. POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE 4. ALL HOLES 03/8". SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME.PLEASE REFER TO THE CORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL TYPICAL PERFORATION DETAIL INFORMATION. 3 SCALE: N.T.S. 0 >I d The design and Information shown on thls drawing Is provided PROJECT No.: SEQ.No.: DATE: as a service to the project owner,engineer and contractor by toContact,Enginsered Solutions LLC r"Contech').Neither this A� �_\ITCAIJ 8474 13459 2/8/2022 F drawing,noranypartthereof,may be used,reproduced or \\� ` �� DY013489 WEST BABCOCK g modified In any manner without the poor written consent of Ceil"I"PNTECH" ��.,��` r�r� DESIGNED: DRAWN: Contech.Failure to comply cl.im.s done at the y oruser's ponsib risk tyforand WEST BABCOCK CHAMBER Contech expressly tlisclaims any liability or responsibility for ENGINEERED SOLUTIONS LLC CMP DETENTION SYSTEMS DYO DYO Fsuch use. r If discre ties between thesu lied information which www.ContechES.com Bozeman, MT CHECKED:DYO APPROVED:DYO Pan PP Pon CONTECH the drewin iabasedandactual fie,d cenditi—meencounlere1 DYODS g 9025 Centre Pointe Dr.,Suite 400, West Chester,OH 45069 DETENTION SYSTEM SHEET NO.: D2 d as site work progresses,these discrepancies must be reported L X to Contech immediately for reevaluation ofthedesign.Contech W accepts no liability for designs based on missing,incomplete or 800-338-1122 513-645-7000 513-645-7993 FAX DRAWING inaccurate information supplier!b ethers. DATE REVISION DESCRIPTION BY A - REINFORCING TABLE TEMPORARY COVER FOR ACCESS CASTING TO BE CONSTRUCTION LOADS PROVIDED AND INSTALLED 0 CMP "BEARING 0 BY CONTRACTOR% 0 . A 0 B REINFORCING PRESSURE HEIGHT RISER FINISHED (PSF) OF lull_ GRADE COVER ill N EW 2,410 a a a a 24" 4,X4, 26' #5 @ 12"OCEW 1,780 'I�IE=111-1 c m G III III �1�I0 4'-6" #5 @ 12"OCEW 2,120 -1lli 1 - ° 4 a 30 4'-6"X 4'-6" 32 #5 @ 12"OCEW 1,530 A ra �1i1 GASKET MATERIAL ¢ 5 X 5' S #5 @ 10"OCEW 1,350 36" 38" CMP RISER CONSTRUCTION LOADS SUFFICIENT TO PREVENT a -- SLAB FROM BEARING ON W 42„ 5'-6"5'-6" #5 @ 10"OCEW 1,720 RISER TO BE PROVIDED BY FOR TEMPORARY CONSTRUCTION VEHICLE LOADS,AN EXTRAAMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER o_ X 5'-6" 44 #5 @ 9"OCEW 1,210 THE TOP OF THE PIPE. THE HEIGHT-OF-COVER SHALL MEET THE MINIMUM REQUIREMENTS SHOWN IN THE TABLE BELOW. CONTRACTOR. OB 11"TYP. ¢ fn THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED 0 6' 6' #5 @ 9"OCEW 1,600 GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC. 48 X 6' 50 #5 @ 8"OCEW 1,100 SECTION VIEW PIPE SPAN, AXLE LOADS (kips) -ASSUMED SOIL BEARING CAPACITY INCHES 18-50 1 50-75 1 75-110 110-150 MINIMUM COVER(FT) o OA A 12-42 2.0 2.5 3.0 3.0 AOG6Q OB 48-72 3.0 3.0 3.5 4.0 #4 DIAGONAL TRIM #4 DIAGONAL TRIM BAR(TYP.4 PLACES), 78-120 3.0 3.5 4.0 4.0 BAR(TYP.4 PLACES), SEE NOTE 7. 126-144 3.5 4.0 4.5 4.5 SEE NOTE 7. 2"COVER 'MINIMUM COVER MAY VARY,DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL f (TYP) 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 o0-1e� SCALE: N.T.S. a OPENING IN PROTECTION SPECIFICATION FOR DESIGNED DETENTION SYSTEM: SLAB FOR OPENING IN CASTING PROTECTION SCOPE PIPE SLAB FOR THIS SPECIFICATION COVERS THE MANUFACTURE AND INSTALLATION OF THE PIPE SHALL BE MANUFACTURED IN ACCORDANCE TO THE APPLICABLE CASTING THE DESIGNED DETENTION SYSTEM DETAILED IN THE PROJECT PLANS. REQUIREMENTS LISTED BELOW: MATERIAL ALUMINIZED TYPE 2: AASHTO M-36 OR ASTM A-760 INTERRUPTED BAR THE MATERIAL SHALL CONFORM TO THE APPLICABLE REQUIREMENTS REPLACEMENT,SEE LISTED BELOW: GALVANIZED: AASHTO M-36 OR ASTM A-760 NOTE 6. STANDARD STANDARD INTERRUPTED BAR ALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THE POLYMER COATED: AASHTO M-245 OR ASTM A-762 REINFORCING, REINFORCING, OB APPLICABLE REQUIREMENTS OF AASHTO M-274 OR ASTM A-92. SEE TABLE SEE TABLE REPLACEMENT, ALUMINUM: AASHTO M-196 ORASTM B-745 SEE NOTE 6. THE GALVANIZED STEEL COILS-218O CONFORM APPLICABLE ROUND OPTION PLAN VIEW SQUARE OPTION PLAN VIEW 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)FOR ALUMINIZED TYPE 2,GALVANIZED OR POLYMER NOTES: APPLICABLE REQUIREMENTS OF AASHTO M-246 OR ASTM A-742. COATED STEEL. SHALL BE IN ACCORDANCE WITH THE MANUFACTURER'S RECOMMENDATIONS FORALUMINUM PIPE. 1. DESIGN IN ACCORDANCE WITH AASHTO,17th EDITION. 7. TRIM OPENING WITH DIAGONAL#4 BARS,EXTEND THE ALUMINUM COILS SHALL CONFORM TO THE APPLICABLE BARS A MINIMUM OF 12"BEYOND OPENING,BEND REQUIREMENTS OF AASHTO M-197 OR ASTM B-744. INSTALLATION 2. DESIGN LOAD HS25. BARS AS REQUIRED TO MAINTAIN BAR COVER. SHALL BE IN ACCORDANCE WITH AASHTO STANDARD SPECIFICATIONS FOR CONSTRUCTION LOADS HIGHWAY BRIDGES,SECTION 26,DIVISION II DIVISION II OR ASTM A-798(FOR 3. EARTH COVER=V MAX. 8. PROTECTION SLAB AND ALL MATERIALS TO BE CONSTRUCTION LOADS MAYBE HIGHER THAN FINAL LOADS.FOLLOW THE ALUMINIZED TYPE 2,GALVANIZED OR POLYMER COATED STEEL)OR ASTM PROVIDED AND INSTALLED BY CONTRACTOR. MANUFACTURER'S OR NCSPA GUIDELINES. B-788(FOR ALUMINUM PIPE)AND IN CONFORMANCE WITH THE PROJECT 4. CONCRETE STRENGTH=3,500 psi PLANS AND SPECIFICATIONS.IF THERE ARE ANY INCONSISTENCIES OR 9. DETAIL DESIGN BY DELTA ENGINEERING,BINGHAMTON,NY. CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE WITH THE 5. REINFORCING STEEL=ASTM A615,GRADE 60. SITE ENGINEER. co NOTE: 6. PROVIDE ADDITIONAL REINFORCING AROUND MANHOLE CAP DETAIL THESE DRAWINGS ARE FOR CONCEPTUAL IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO FOLLOW OSHA OPENINGS EQUAL TO THE BARS INTERRUPTED, PURPOSESAND DO NOT REFLECTANY LOCAL GUIDELINES FOR SAFE PRACTICES. HALF EACH SIDE. ADDITIONAL BARS TO BE IN SCALE: N.T.S. 3 PREFERENCES OR REGULATIONS.PLEASE THE SAME PLANE. o CONTACT YOUR LOCAL CONTECH REP FOR >I MODIFICATIONS. d The design and Information shown on thus drawing Is provided PROJECT No.: SEQ.No.: DATE: as a service to the project owner,engineer and.nta-,by Contach Engines d Solutions LLC r"Contech').Neither this A�I�_\ITCAIJ 8474 �3489 2/S/2D22 F creasing,nor any pan thereof,may be used,reproduced or C�i►NTECH \\� ` �� DY013489 WEST BABCOCK g modified In any manner without the poor written consent of v ��4wiq- `�r� DESIGNED: DRAWN: Contach.Failure to comply yliabitty or risk WEST BABCOCK CHAMBER Contech expressly tlisclaims any liability or responsibility for ENGINEERED SOLUTIONS LLC CMP DETENTION SYSTEMS DYO DYO Fsuch use. r If discre cies between the suppled information which www.ContechES.com Bozeman, MT CHECKED:DYO APPROVED:DVO Pan PP Pon CONTECH hedrawin is based and actual fieldcenditiensars-countered DYODS g 9025CentrePointeDr.,Suite400, West Chester,OH DETENTION SYSTEM SHEET NO.: D3 d as site work progresses,these discrepancies must be reported Ld to Contech immediately for reevaluation of the design.Contech W accepts no liability for tlesigns basetl on missing,inwmplete or 800-338-1122 513-645-7000 513-645-7993 FAX DRAWING inaccurate information supplicalb ethers. DATE REVISION DESCRIPTION BY CMP DETENTION SYSTEM INSPECTION AND CMP DETENTION INSTALLATION GUIDE IN—SITU TRENCH WALL MAINTENANCE WHEN FLOWABLE 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. BALANCE BETWEEN THE UPLIFT FORCE OF THE CLSM,THE OPPOSING PERFORM A SIMPLE SOIL PRESSURE CHECK USING THE APPLIED LOADS TO 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 FORA SAFE WORK ENVIRONMENTAND DETERMINE THE PROPER LIFT THICKNESS. ANNUAL INSPECTIONS.SITES WITH HIGH TRASH LOAD OR SMALL OUTLET APPROPRIATE FOR YOUR SITE. PROPER BACKFILL PLACEMENT AND COMPACTION TAKE CARE OF THIS CONCERN. CONTROL ORIFICES MAY NEED MORE FREQUENT INSPECTIONS.THE RATE AT a� BACKFILL-WELL GRADED WHICH THE SYSTEM COLLECTS POLLUTANTS WILL DEPEND MORE ON SITE FOUNDATION LIVE LOAD 4'GRANULAR AND SMALLER STAGE POURS AS REQUIRED TO SPECIFIC ACTIVITIES RATHER THAN THE SIZE OR CONFIGURATION OF THE CONSTRUCT A FOUNDATION THAT CAN SUPPORT THE DESIGN LOADING CONTROL FLOATATION AND PIPE SYSTEM.///// ///�/i DISTORTION/DISPLACEMENT EMBANKMENT CLSM APPLIED BY THE PIPE AND ADJACENT BACKFILL WEIGHTAS WELL AS MAINTAIN ITS INTEGRITY DURING CONSTRUCTION. \`%/\`%/ `%/\/\ /!\/\// !\ \\/! EMBANKMENT INSPECTIONS SHOULD BE PERFORMED MORE OFTEN IN EQUIPMENT jABovEAND BELOW \\\\ TION \/\/\ WASHDOWN AREAS,IN CLIMATES WHERE SANDING AND/OR SALTING IF SOFT OR UNSUITABLE SOILS ARE ENCOUNTERED,REMOVE THE POOR \\ \j\,\\/\\�\\/\\/\\/\ /\\/\/\/\\/\\ \\/\\/\\/\\/\\/\/\ BEDDING)WITH UNIFORMLY /i/%// j/j/j OPERATIONS TAKE PLACE,AND IN OTHER VARIOUS INSTANCES IN WHICH ONE SOILS DOWN TO A SUITABLE DEPTH AND THEN BUILD UP TO THE \\/// ///////�//// / ////�///////�///////�/// GRADED BEDDING LAYER. ////�j \`//\`/�� WOULD EXPECT HIGHER ACCUMULATIONS OF SEDIMENT OR ABRASIVE/ •.• ". APPROPRIATE ELEVATION WITH A COMPETENT BACKFILL MATERIAL.THE BEDDING-WELL GRADED CORROSIVE CONDITIONS.A RECORD OF EACH INSPECTION IS TO BE STRUCTURAL FILL MATERIAL GRADATION SHOULD NOT ALLOW THE GRANULAR AND SMALLER \/\\\/\//\//\/\\\\//\///\/\//\//\/\/\/\�j\/\/\/\�j\/\/\/ MAINTAINED FOR THE LIFE OF THE SYSTEM MIGRATION OF FINES,WHICH CAN CAUSE SETTLEMENT OF THE DETENTION WEIGHTED PIPE WITH MOBILE SYSTEM OR PAVEMENTABOVE. 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 CMP DETENTION SYSTEMS SHOULD BE CLEANED WHEN AN INSPECTION GEOGRID REDUCES OVER EXCAVATION AND REPLACEMENT FILL QUANTITIES. MATERIAL SHALL BE WORKED INTO THE PIPE HAUNCHES BY MEANS OF BACKFILL REVEALS ACCUMULATED SEDIMENT OR TRASH IS CLOGGING THE DISCHARGE COVER SHOVEL-SLICING,RODDING,AIR TAMPER,VIBRATORY ROD,OR OTHER EFFECTIVE REDUCE THE AMOUNT OF UEOGRID USED TO DERCUT GEOGRID WASN'T USED METHODS. CONSTRUCTION LOADING ORIFICE. MAXIMUM UNBALANCE LIMITED ACCUMULATED SEDIMENT AND TRASH CAN TYPICALLY BE EVACUATED EMBANKMENT TO2 LIFTS(APPROX.16") TYPICALLY,THE MINIMUM COVER SPECIFIED FOR A PROJECTASSUMES H-20 THROUGH THE MANHOLE OVER THE OUTLET ORIFICE.IF MAINTENANCE IS NOT LIVE LOAD.BECAUSE CONSTRUCTION LOADS OFTEN EXCEED DESIGN LIVE PERFORMED AS RECOMMENDED,SEDIMENTAND TRASH MAY ACCUMULATE IN EMBANKMENT (PIPE PIPE LOADS,INCREASED TEMPORARY MINIMUM COVER REQUIREMENTS ARE FRONT OF THE OUTLET ORIFICE.MANHOLE COVERS SHOULD BE SECURELY \ \ \ ___________________________ /, \ \ \ /\ \ SEATED FOLLOWING CLEANING ACTIVITIES.CONTECH SUGGESTS THATALL \//\//\\/// / \__\_\_\_\-\_\_\_\_\ \\/\ \\/ NECESSARY.SINCE CONSTRUCTION EQUIPMENT VARIES FROM JOB TO JOB, IT IS BEST TO ADDRESS EQUIPMENT SPECIFIC MINIMUM COVER SYSTEMS BE DESIGNED WITH AN ACCESS/INSPECTION MANHOLE SITUATED AT \`/\`/\`/\`i /\`/\`/\`/\`/\`/\ i�//`/i /`�/`//� GEOGRID OR NEAR THE INLET AND THE OUTLET ORIFICE.SHOULD IT BE NECESSARY TO UNDERCUTAND REPLACE 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 ENTRY AND OSHA GRADE THE FOUNDATION SUBGRADE TO A UNIFORM OR SLIGHTLY SLOPING REGULATIONS SHOULD BE FOLLOWED. GRADE.IF THE SUBGRADE IS CLAY OR RELATIVELY NON-POROUS AND THE CONSTRUCTION SEQUENCE WILL LAST FOR AN EXTENDED PERIOD OF TIME, ANNUAL INSPECTIONS ARE BEST PRACTICE FOR ALL UNDERGROUND SYSTEMS. IT IS BEST TO SLOPE THE GRADE TO ONE END OF THE SYSTEM.THIS WILL IF AASHTO T99 PROCEDURES ARE DETERMINED INFEASIBLE BY THE DURING THIS INSPECTION,IF EVIDENCE OF SALTING/DE-ICING AGENTS IS ALLOW EXCESS WATER TO DRAIN QUICKLY,PREVENTING SATURATION OF THE GEOTECHNICAL ENGINEER OF RECORD,COMPACTION IS CONSIDERED ADDITIONAL CONSIDERATIONS OBSERVED WITHIN THE SYSTEM,IT IS BEST PRACTICE FOR THE SYSTEM TO BE SUBGRADE. ADEQUATE WHEN NO FURTHER YIELDING OF THE MATERIAL IS OBSERVED RINSED,INCLUDING ABOVE THE SPRING LINE SOON AFTER THE SPRING THAW UNDER THE COMPACTOR,OR UNDER FOOT,AND THE GEOTECHNICAL BECAUSE MOST SYSTEMS ARE CONSTRUCTED BELOW-GRADE,RAINFALL AS PART OF THE MAINTENANCE PROGRAM FOR THE SYSTEM. ENGINEER OF RECORD(OR REPRESENTATIVE THEREOF)IS SATISFIED WITH THE LEVEL OF COMPACTION. CAN RAPIDLY FILL THE EXCAVATION;POTENTIALLY CAUSING FLOATATION GEOMEMBRANE BARRIER AND MOVEMENT OF THE PREVIOUSLY PLACED PIPES.TO HELP MITIGATE MAINTAINING AN UNDERGROUND DETENTION OR INFILTRATION SYSTEM IS POTENTIAL PROBLEMS IT IS BEST TO START THE INSTALLATION AT THE EASIEST WHEN THERE IS NO FLOW ENTERING THE SYSTEM.FOR THIS , A SITE'S RESISTIVITY MAY CHANGE OVER TIME WHEN VARIOUS TYPES OF FOR LARGE SYSTEMS,CONVEYOR SYSTEMS,BACKHOES WITH LONG REASON,IT IS A GOOD IDEA TO SCHEDULE THE CLEANOUT DURING DRY SALTING AGENTS ARE USED,SUCH AS ROAD SALTS FOR DEICING AGENTS.IF REACHES OR DRAGLINES WITH STONE BUCKETS MAY BE USED TO PLACE DOWNSTREAM END WITH THE OUTLET ALREADY CONSTRUCTED TO ALLOW WEATHER. BACKFILL. ONCE MINIMUM COVER FOR CONSTRUCTION LOADING ACROSS A ROUTE FOR THE WATER TO ESCAPE.TEMPORARY DIVERSION MEASURES SALTING AGENTS ARE USED ON OR NEAR THE PROJECT SITE,A THE ENTIRE WIDTH OF THE SYSTEM IS REACHED,ADVANCE THE EQUIPMENT THE FOREGOING INSPECTION AND MAINTENANCE EFFORTS HELP ENSURE GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM.THE TO THE END OF THE RECENTLY PLACED FILL,AND BEGIN THE SEQUENCE MAY BE REQUIRED FOR HIGH FLOWS DUE TO THE RESTRICTED NATURE OF UNDERGROUND PIPE SYSTEMS USED FOR STORMWATER STORAGE CONTINUE GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM AGAIN UNTIL THE SYSTEM IS COMPLETELY BACKFILLED.THIS TYPE OF THE OUTLET PIPE. TO FUNCTION AS INTENDED BY IDENTIFYING RECOMMENDED REGULAR THE POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM THE USE OF CONSTRUCTION SEQUENCE PROVIDES ROOM FOR STOCKPILED BACKFILL INSPECTION AND MAINTENANCE PRACTICES.INSPECTION AND MAINTENANCE DIRECTLY BEHIND THE BACKHOE,AS WELLAS THE MOVEMENT OF CATCH BASIN RELATED TO THE STRUCTURAL INTEGRITY OF THE PIPE OR THE SOUNDNESS SUCH AGENTS INCLUDING PREMATURE CORROSION AND REDUCED ACTUAL CONSTRUCTION TRAFFIC.MATERIAL STOCKPILES ON TOP OF THE INLET OF PIPE JOINT CONNECTIONS IS BEYOND THE SCOPE OF THIS GUIDE. SERVICE LIFE. BACKFILLED DETENTION SYSTEM SHOULD BE LIMITED TO 8-TO 10-FEET HIGH WATER _WATER PAVED PARKING LOT AND MUST PROVIDE BALANCED LOADING ACROSS ALL BARRELS.TO THE PROJECT'S 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 IF ANYADDITIONAL PROTECTIVE LOCAL CONTECH SALES ENGINEER. WATER ELEVATION IN MEASURES ARE REQUIRED.BELOW IS ATYPICAL DETAIL SHOWING THE DETENTION SYSTEM PLACEMENT OF A GEOMEMBRANE BARRIER FOR PROJECTS WHERE SALTING AGENTS ARE USED ON OR NEAR THE PROJECT SITE. FINISHED FUNCTIONING SYSTEM TYPICAL BACKFILL SEQUENCE OUTLET CONTROL 20 MIL PE IMPERMEABLE '12"FORiT a"m) \�\/ e"FQR 1.021AND>) \//\\//\\/� /\\\\\�EMBANKMENT QLINER OVER TOP OF PIPE 14 LIMITSOF REQUIRED —FILL \//\�/\// 1' 2' 3' 4— C7 3 0 >I D. 2 The design and Information shown on thls drawing Is provided PROJECT No.: SEC.No.: DATE: as a service to the project owner,engineer and contractor by DoContach Enoinsered Solutions LLC("Contech').Neither this �� _\ITCAIJ 8474 13489 2/B/2D22 LU drawing,nor any part thereof,may be used,reproduced or ' NTE \\� ` �� DY013489 WEST BABCOCK g modified In any manner without the poor written consent of ll ��.,F�` `�r� DESIGNED: DRAWN: Contach.Failure to comply.im.doneattyor—'sownriyfor WEST BABCOCK CHAMBER Contech expressly tlisclaims any liability or responsibility for ENGINEERED SOLUTIONS LLC CMP DETENTION SYSTEMS DYO DYO Fsuch use. r If discrepancies between the supplant information which www.ContechES.com Bozeman, MT CHECKED:DYO APPROVED:DVO Pan PP Pon CONTECH the drawingis based and actual field cendions are encountered DYODS 9025 Centre Pointe Dr.,Suite 400, West Chester,OH 45069 DETENTION SYSTEM SHEET NO.: �4 d as site work progresses,these discrepancies must be reported X to Contech immediately for reevaluation of the design.Contech W accepts no liability for tlesigns based on missing,incomplete or 800-338-1122 513-645-7000 513-645-7993 FAX DRAWING inaccums,information supplier!b ethers. DATE REVISION DESCRIPTION BY