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HomeMy WebLinkAboutO&M Manual 11-22-19 OPERATIONS & MAINTENANCE MANUAL FOR POST-CONSTRUCTION MEASURES Carmel Elementary Reconstruction 101 4th Avenue SE, Carmel, Indiana 46032 Karen K. Collins, PE Indiana registration No. 10404538 PREPARED FOR CARMEL CLAY SCHOOLS 5201 EAST MAIN STREET CARMEL, IN 46033 November 2019 8365 Keystone Crossing, Suite 201 Indianapolis, Indiana 46240 Phone: (317) 202-0864 Fax: (317)202-0908 Carmel Elementary School Clay Center Road Elementary OPERATIONS & MAINTENANCE MANUAL Table of Contents 1. BMP Owner 2. Definition of Best Management Practice (BMP) 3. Description of BMPs a. Aqua-Swirl AS-6 & AS-7 4. Inspection and Maintenance a. Aqua-Swirl AS-6 & AS-7 5. Description of BMPs a. Underground Dry Pond with Isolator Row(s) 6. Inspection and Maintenance a. Underground Dry Pond with Isolator Row(s) 7. Owner Acknowledgement Agreement 8. Operation, Maintenance and Management Inspection Checklists 9. BMP Location Maps 10. BMP Details a. Aqua-Swirl AS-6 b. Aqua-Swirl AS-7 c. Underground Dry Pond with Isolator Row(s) Carmel Elementary School 1. BMP OWNER Name: Carmel Clay School District Attn. Mr. Ron Farrand Jr., RA Address: 5201 East 131st Street Carmel, IN 46033 Phone: 317-815-3962 2. DEFINITION OF A BEST MANAGEMENT PRACTICE (BMP) A Best Management Practice (BMP) is defined as a structural measure (wetland, pond, vegetated swale, sand filter, etc.) designed to benefit water quality and quantity. Storm water can easily become polluted by grease, oil, sediment, chemicals, and other contaminants as it travels to an inlet or receiving water. The purpose of a BMP is to improve storm water quality primarily through the removal of Total Suspended Solids (TSS). The City of Carmel has Right-of-Entry to the development to inspect and maintain the BMP as necessary. Easement(s) have been provided around the BMPs for this development, with implied access as needed. 3. DESCRIPTION OF BMPs: Aqua-Swirl: BMP #1, the Aqua-Swirl AS-6 & AS-7 hydrodynamic swirl filter, is used to treat storm water on this site. The Aqua-Swirl filter provides treatment for the most contaminated first flush, while the cleaner peak storm runoff is diverted through the main conveyance pipe. The operation begins when storm water enters the Aqua-Swirl through a tangential inlet pipe which produces a circular (or vortex) flow pattern that causes contaminates to settle. Because storm water flow is intermittent by nature, the Aqua-Swirl Concentrator retains water between storm events providing both dynamic and quiescent settling of inorganic solids. The dynamic settling occurs during each storm event, while the quiescent settling takes place between successive storms. A combination of gravitational and hydrodynamic drag forces encourages the solids to drop out of the flow and migrate to the center of the chamber where velocities are the lowest. 4. INSPECTION AND MAINTENANCE Aqua-Swirl:  BMP Owner must routinely inspect BMPs to verify that all BMP components are functioning as designed and are not in danger of failing. All BMPs need maintenance to function as water quality and quantity enhancements. Maintenance can range from dredging/pumping sediment out of the treatment structures to repairing any damage that has affected the structure’s integrity and function.  BMP Owner is responsible for the maintenance of the BMP and any costs associated with Carmel Elementary School maintaining the BMP. BMP Owner is required to perform any maintenance tasks outlined in this text.  BMP Owner shall keep the BMP free from litter, floating pollutants, and sediment accumulated above levels outlined in this text.  Representatives from the City of Carmel have the right to enter this property to inspect the BMPs. The BMP Owner shall be financially responsible for any maintenance, repairs, or recommendations for modification as required by the City of Carmel or its representatives during inspections.  Refer to the checklists with this Manual for guidance on BMP inspections.  Inspections must be documented on the inspection forms included in this manual. 5. DESCRIPTION OF BMPs: Underground Dry Pond with Isolator Row(s): BMP #2, the underground dry pond with isolator row(s), is used to treat storm water on this site. The detention basin isolator row configuration provides water quality treatment by intercepting debris as well as sediment and silt (materials) into the isolator row(s), which are non-perforated pipes (to prevent unwanted escape of materials in rock voids outside the detention pond). Once the materials have accumulated to a significant depth, such as 3 to 6 inches deep, the access hatch can be opened and a vacuum truck used to remove the materials and restore once again the full available detention volume. 6. INSPECTION AND MAINTENANCE Underground Dry Pond with Isolator Row(s):  The checklist is for the use of the BMP owner in performing routine inspections. The City of Carmel may perform inspections of the BMP using a similar checklist. The BMP owner is responsible for the cost of maintenance and annual inspections. The BMP owner must maintain and update the BMP operations and maintenance plan. At a minimum the operations and maintenance plan must include, but is not limited to:  -Restore and stabilize any erosion.  -Restorative maintenance involving removal of any litter, pollutants, excessive accumulated debris or sediment. This may include skimming, dredging or vacuum removal.  BMP Owner must routinely inspect BMP to verify that all BMP components are functioning as designed and are not in danger of failing. All BMPs need maintenance to function effectively as water quality (and peak attenuation / mitigation) enhancements.  Inspections must be documented on the inspection form included in this manual. Carmel Elementary School Maintenance of all storm water pollution & prevention plan (SWPPP) measures will be the responsibility of the project owner, utilizing procedures outlined in this manual for post construction water quality measures.  Inspect outlet structure and remove any litter, debris or clogging as needed to restore function.  Do not place any fill (or any other material) in the detention basin.  Deep-rooted plants and trees are not allowed in the vicinity of the detention basin.  During the first year, monthly to semi-monthly (6 to 12 times in the year) inspections shall be performed.  After the first year, quarterly (four times a year) inspections should be performed. Carmel Elementary School Requirements regarding the submittal of annual inspection reports to the City of Carmel Engineering Department: The first report is due one year after construction is completed, with subsequent reports due each year within the same month of the initial report, or on a schedule set by the City of Carmel. If there are any deficiencies found during the inspection, these should be addressed. If the inspection report is not received within the month it is due, if there are deficiencies which were not included in the report, or if any deficiencies included in the report are not addressed in a timely manner, the BMP owner faces enforcement action from the City. Send to: City of Carmel Engineering Department Storm Water O & M Program Manager 1 Civic Square Carmel, IN 46032 This Operation and Maintenance Manual is submitted to the City of Carmel, IN with the intent of insuring the longevity and adequate functioning of all BMPs. The BMP Owner noted is responsible for any additional maintenance and/or repair activities noted in this text as required by the City of Carmel, and any activities required to maintain the function and longevity of the BMP, including, if necessary, measures and / or practices that are above and beyond what is herein described. Carmel Elementary School 7. OWNER ACKNOWLEDGMENT AGREEMENT Carmel Elementary School Owner Acknowledgement Agreement ("Agreement) For good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the undersigned owner (“Owner”) hereby submits this Operation and Maintenance Manual (“Manual”) to the City of Carmel, Indiana (“City”) as a written acknowledgement of Owner’s warranty and agreement to institute, maintain, and follow the water quality Best Management Practices (“BMPs”) listed below, and to follow and abide by the inspection schedule and maintenance activities listed in this Manual. The Owner also hereby agrees to provide, at Owner’s cost, all additional maintenance, repair, and/or replacement services reasonably necessary to maintain the function and longevity of the BMP from and including the date this Agreement is executed by Owner to and including the date on which a new Agreement is filed with the City by another party who assumes all of the obligations and responsibilities of Owner as set forth herein. The City of Carmel is Granted Authority to access the BMPs. BMPs:_Two Aqua-Swirl AS-6, One Aqua-Swirl AS-7, and Underground Dry Pond with Isolator Row(s)______________ _______________________________ ___________________________ Owner Signature Date _______________________________ ___________________________ Printed Name Company STATE OF INDIANA ) ) SS: COUNTY OF HAMILTON ) BEFORE ME, the undersigned, a Notary Public in and for said County and State, personally appeared _________________________________ Owner subscribed and sworn before this ____ day of __________________, ________. ______________________________ ______________________________ County of Residence Signature ______________________________ Commission Expiration Date ______________________________ Printed Name Carmel Elementary School 8. OPERATIONS, MAINTENANCE AND MANAGEMENT CHECKLISTS Carmel Elementary School Aqua-Swirl Inspection Check List Page 1 of 15 Aqua-Swirl® Stormwater Treatment System Inspection and Maintenance Manual AquaShieldTM, Inc. 2705 Kanasita Drive Chattanooga, TN 37343 Toll free (888) 344-9044 Phone: (423) 870-8888 Fax: (423) 826-2112 Email: info@aquashieldinc.com www.aquashieldinc.com March 2013 © AquaShieldTM, Inc. 2013 Page 2 of 15 Table of Contents Page(s) AquaShieldTM Stormwater Treatment Systems 3 Aqua-Swirl® Stormwater Treatment System 4 – 9 Inspection and Maintenance Worksheets 10 – 14 Aqua-Swirl® Tabular Maintenance Schedule 15 AquaShieldTM, Inc. 2705 Kanasita Drive Chattanooga, Tennessee 37343 Toll free (888) 344-9044 Fax (423) 870-2112 www.aquashieldinc.com Page 3 of 15 AquaShield™, Inc Stormwater Treatment Solutions The highest priority of AquaShieldTM, Inc. (AquaShield™) is to protect waterways by providing stormwater treatment solutions to businesses across the world. These solutions have a reliable foundation based on over 20 years of water treatment experience. Local regulators, engineers, and contractors have praised the AquaShield™ systems for their simple design and ease of installation. All the systems are fabricated from high performance, durable and lightweight materials. Contractors prefer the quick and simple installation of our structures that saves them money. The patented line of AquaShield™ stormwater treatment products that provide high levels of stormwater treatment include the following: Aqua-Swirl® Stormwater Treatment System: hydrodynamic separator, which provides a highly effective means for the removal of sediment, floating debris and free- oil. Aqua-FilterTM Stormwater Filtration System: treatment train stormwater filtration system capable of removing gross contaminants, fine sediments, waterborne hydrocarbons, heavy metals and total phosphorous. Aqua-Swirl® Stormwater Treatment System Aqua-Filter™ Stormwater Filtration System Page 4 of 15 Aqua-Swirl® Stormwater Treatment System The patented Aqua-Swirl® Stormwater Treatment System is a single chamber hydrodynamic separator which provides a highly effective means for the removal of sediment, free oil, and floating debris. Both treatment and storage are accomplished in the swirl chamber without the use of multiple or “blind” chambers. Independent laboratory and field performance verifications have shown that the Aqua-Swirl® achieves over 80% suspended solids removal efficiency on a net annual basis. The Aqua-Swirl® is most commonly installed in an “off-line” configuration. Or, depending on local regulations, an “in-line” (on-line) conveyance flow diversion (CFD) system can be used. The CFD model allows simple installation by connecting directly to the existing storm conveyance pipe thereby providing full treatment of the “first flush,” while the peak design storm is diverted and channeled through the main conveyance pipe. The patented Aqua-Swirl® Stormwater Treatment System provides a highly effective means for the removal of sediment, floating debris, and free oil. Swirl technology, or vortex separation, is a proven form of treatment utilized in the stormwater industry to accelerate gravitational separation. Page 5 of 15 Floatable debris in the Aqua-Swirl® Each Aqua-Swirl® is constructed of high performance, lightweight and durable materials including polymer coated steel (PCS), high density polyethylene (HDPE), or fiberglass reinforced polymer (FRP). These materials eliminate the need for heavy lifting equipment during installation. System Operation The treatment operation begins when stormwater enters the Aqua-Swirl® through a tangential inlet pipe that produces a circular (or vortex) flow pattern that causes contaminates to settle to the base of the unit. Since stormwater flow is intermittent by nature, the Aqua-Swirl® retains water between storm events providing both dynamic and quiescent settling of solids. The dynamic settling occurs during each storm event while the quiescent settling takes place between successive storms. A combination of gravitational and hydrodynamic drag forces encourages the solids to drop out of the flow and migrate to the center of the chamber where velocities are the lowest. The treated flow then exits the Aqua-Swirl® behind the arched outer baffle. The top of the baffle is sealed across the treatment channel, thereby eliminating floatable pollutants from escaping the system. A vent pipe is extended up the riser to expose the backside of the baffle to atmospheric conditions, preventing a siphon from forming at the bottom of the baffle. Custom Applications The Aqua-Swirl® system can be modified to fit a variety of purposes in the field, and the angles for inlet and outlet lines can be modified to fit most applications. The photo below demonstrates the flexibility of Aqua-Swirl® installations using a “twin” configuration in order to double the Page 6 of 15 Custom designed AS-9 Twin Aqua-Swirl® water quality treatment capacity. Two Aqua-Swirl® units were placed side by side in order to treat a high volume of water while occupying a small amount of space. Retrofit Applications The Aqua-Swirl® system is designed so that it can easily be used for retrofit applications. With the invert of the inlet and outlet pipe at the same elevation, the Aqua-Swirl® can easily be connected directly to the existing storm conveyance drainage system. Furthermore, because of the lightweight nature and small footprint of the Aqua-Swirl®, existing infrastructure utilities (i.e., wires, poles, trees) would be unaffected by installation. AquaShield™ Product System Maintenance The long term performance of any stormwater treatment structure, including manufactured or land based systems, depends on a consistent maintenance plan. Inspection and maintenance functions are simple and easy for the AquaShieldTM Stormwater Treatment Systems allowing all inspections to be performed from the surface. It is important that a routine inspection and maintenance program be established for each unit based on: (a) the volume or load of the contaminants of concern, (b) the frequency of releases of contaminants at the facility or location, and (c) the nature of the area being drained. In order to ensure that our systems are being maintained properly, AquaShieldTM offers a maintenance solution to all of our customers. We will arrange to have maintenance performed. Page 7 of 15 Inspection All AquaShieldTM products can be inspected from the surface, eliminating the need to enter the systems to determine when cleanout should be performed. In most cases, AquaShieldTM recommends a quarterly inspection for the first year of operation to develop an appropriate schedule of maintenance. Based on experience of the system’s first year in operation, we recommend that the inspection schedule be revised to reflect the site-specific conditions encountered. Typically, the inspection schedule for subsequent years is reduced to semi-annual inspection. Aqua-Swirl® Maintenance The Aqua-Swirl® has been designed to minimize and simplify the inspection and maintenance process. The single chamber system can be inspected and maintained entirely from the surface thereby eliminating the need for confined space entry. Furthermore, the entire structure (specifically, the floor) is accessible for visual inspection from the surface. There are no areas of the structure that are blocked from visual inspection or periodic cleaning. Inspection of any free- floating oil and floatable debris can be directly observed and maintained through the manhole access provided directly over the swirl chamber. Aqua-Swirl® Inspection Procedure To inspect the Aqua-Swirl®, a hook is needed to remove the manhole cover. AquaShieldTM provides a customized manhole cover with our distinctive logo to make it easy for maintenance crews to locate the system in the field. We also provide a permanent metal information plate affixed inside the access riser which provides our contact information, the Aqua-Swirl® model size, and serial number. Page 8 of 15 Sediment inspection using a stadia rod in a single chamber Maintain system when sediment is 42-48 inches below water surface. Maximum sediment storage capacity reached when sediment is 30 inches below water surface. The only tools needed to inspect the Aqua-Swirl® system are a flashlight and a measuring device such as a stadia rod or pole. Given the easy and direct accessibility provided, floating oil and debris can be observed directly from the surface. Sediment depths can easily be determined by lowering a measuring device to the top of the sediment pile and to the surface of the water. When the sediment pile is within 42 to 48 inches of the water surface (or sediment pile thickness is 18 to 24 inches as measured from the base), the system should be maintained. The maximum sediment storage capacity of the Aqua-Swirl® is reached when the sediment pile is within 30 inches of the water surface (or sediment accumulation is 36 inches thick as measured from the base). It should be noted that in order to avoid underestimating the volume of sediment in the chamber, the measuring device must be carefully lowered to the top of the sediment pile. Keep in mind that the finer sediment at the top of the pile may offer less resistance to the measuring device than the larger particles which typically occur deeper within the sediment pile. The Aqua-Swirl® design allows for the sediment to accumulate in a semi-conical fashion as illustrated above. That is, the depth to sediment as measured below the water surface may be less in the center of the swirl chamber; and likewise, may be greater at the edges of the swirl chamber. Aqua-Swirl® Cleanout Procedure Cleaning the Aqua-Swirl® is simple and quick. Free-floating oil and floatable debris can be observed and removed directly through the 30-inch service access riser provided. A vacuum truck is typically used to remove the accumulated sediment and debris. An advantage of the 42-48” Page 9 of 15 Vacuum truck quickly cleans the Aqua-Swirl® from a single chamber Aqua-Swirl® design is that the entire sediment storage area can be reached with a vacuum hose from the surface (reaching all the sides). Since there are no multiple or limited (hidden or “blind”) chambers in the Aqua-Swirl®, there are no restrictions to impede on-site maintenance tasks. Disposal of Recovered Materials Disposal of recovered material is typically handled in the same fashion as catch basin cleanouts. AquaShieldTM recommends that all maintenance activities be performed in accordance with appropriate health and safety practices for the tasks and equipment being used. AquaShieldTM also recommends that all materials removed from the Aqua-Swirl® and any external structures (e.g, bypass features) be handled and disposed in full accordance with any applicable local and state requirements. Aqua-Swirl® Inspection and Maintenance Work Sheets on following pages Page 10 of 15 Aqua-Swirl® Inspection and Maintenance Manual Work Sheets SITE and OWNER INFORMATION Site Name: Site Location: Date: Time: Inspector Name: Inspector Company: Phone #: Owner Name: Owner Address: Owner Phone #: Emergency Phone #: INSPECTIONS I. Floatable Debris and Oil 1. Remove manhole lid to expose liquid surface of the Aqua-Swirl®. 2. Remove floatable debris with basket or net if any present. 3. If oil is present, measure its depth. Clean liquids from system if one half (½) inch or more oil is present. Note: Water in Aqua-Swirl® can appear black and similar to oil due to the dark body of the surrounding structure. Oil may appear darker than water in the system and is usually accompanied by oil stained debris (e.g. Styrofoam, etc.). The depth of oil can be measured with an oil/water interface probe, a stadia rod with water finding paste, a coliwasa, or collect a representative sample with a jar attached to a rod. II. Sediment Accumulation 1. Lower measuring device (e.g. stadia rod) into swirl chamber through service access provided (Figure 1). From a reference point at the top of the service access: 2. Record distance to top of sediment pile (Figure 2): inches 3. Record distance to top of water surface: inches 4. Calculate distance to sediment minus distance to water: inches 5. Schedule cleaning if value in Step #4 is 48 to 42 inches or less. The sediment storage capacity is exceeded when the depth to sediment is within 30 inches of the water surface and maintenance should be performed immediately. Page 11 of 15 III. Diversion Structures (External Bypass Features) If a diversion (external bypass) configuration is present, it should be inspected as follows: 1. Inspect weir or other bypass feature for structural decay or damage. Weirs are more susceptible to damage than off-set piping and should be checked to confirm that they are not crumbling (concrete or brick) or decaying (steel). 2. Inspect diversion structure and bypass piping for signs of structural damage or blockage from debris or sediment accumulation. 3. When feasible, measure elevations on diversion weir or piping to ensure it is consistent with site plan designs. 4. Inspect downstream (convergence) structure(s) for sign of blockage or structural failure as noted above. CLEANING Schedule cleaning with local vactor company or AquaShieldTM to remove sediment, oil and other floatable pollutants. The captured material generally does not require special treatment or handling for disposal. Site-specific conditions or the presence of known contaminants may necessitate that appropriate actions be taken to clean and dispose of materials captured and retained by the Aqua-Swirl®. All cleaning activities should be performed in accordance with property health and safety procedures. AquaShieldTM always recommends that all materials removed from the Aqua-Swirl® during the maintenance process be handled and disposed in accordance with local and state environmental or other regulatory requirements. Figure 2. Maintain system when sediment is 42 to 48 inches below water surface to ensure proper system operation and performance. Maximum sediment storage capacity is reached when sediment is 30 inches below water surface. Figure 1. Measuring sediment in swirl chamber using stadia rod. Inspections are performed from the surface through the manhole access cover. 42-48” Page 12 of 15 MAINTENANCE SCHEDULE I. During Construction Inspect the Aqua-Swirl® every three (3) months and clean the system as needed. The Aqua-Swirl® should be inspected and cleaned at the end of construction regardless of whether it has reached its maintenance trigger (42 to 48 inches below water surface), sediment storage capacity (30 inches below water surface). II. First Year Post-Construction Inspect the Aqua-Swirl® every three (3) months and clean the system as needed. Inspect and clean the system once annually regardless of whether it has reached its sediment or floatable pollutant storage capacity. III. Second and Subsequent Years Post-Construction If the Aqua-Swirl® did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction period, the system can be inspected and cleaned once annually. If the Aqua-Swirl® reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post-Construction period, the system should be inspected once every six (6) months and cleaned as needed. The Aqua-Swirl® should be cleaned annually regardless of whether it reaches its sediment or floatable pollutant capacity. IV. Bypass Structures Bypass structures should be inspected whenever the Aqua-Swirl® is inspected. Maintenance should be performed on bypass structures as needed. MAINTENANCE COMPANY INFORMATION Company Name: Street Address: City: State/Prov.: Zip/Postal Code: Contact: Title: Office Phone: Cell Phone: Page 13 of 15 ACTIVITY LOG Date of Cleaning: (Next inspection should be 3 months from this data for first year). Time of Cleaning: Start: End: Date of Next Inspection: Floatable debris present: Yes No Notes: Oil present: Yes No Oil depth (inches): Measurement method and notes: STRUCTURAL CONDITIONS and OBSERVATIONS Structural damage: Yes No Where: Structural wear: Yes No Where: Odors present: Yes No Describe: Clogging: Yes No Describe: Other Observations: Page 14 of 15 NOTES Additional Comments and/or Actions To Be Taken Time Frame ATTACHMENTS Attach site plan showing Aqua-Swirl® location. Attach detail drawing showing Aqua-Swirl® dimensions and model number. If a diversion configuration is used, attach details showing basic design and elevations (where feasible). Page 15 of 15 Aqua-Swirl® TABULAR MAINTENANCE SCHEDULE Date Construction Started: Date Construction Ended: During Construction Month Activity 1 2 3 4 5 6 7 8 9 10 11 12 Inspect and Clean as needed X X X X Inspect Bypass and maintain as needed X X X X Clean System* X* * The Aqua-Swirl® should be cleaned once a year regardless of whether it has reached full pollutant storage capacity. In addition, the system should be cleaned at the end of construction regardless of whether it has reach full pollutant storage capacity. First Year Post-Construction Month Activity 1 2 3 4 5 6 7 8 9 10 11 12 Inspect and Clean as needed X X X X Inspect Bypass and maintain as needed X X X X Clean System* X* * The Aqua-Swirl® should be cleaned once a year regardless of whether it has reached full pollutant storage capacity. Second and Subsequent Years Post-Construction Month Activity 1 2 3 4 5 6 7 8 9 10 11 12 Inspect and Clean as needed X* Inspect Bypass, maintain as needed X* Clean System* X* * If the Aqua-Swirl® did not reach full sediment or floatable pollutant capacity in the First Year Post-Construction period, the system can be inspected and cleaned once annually. If the Aqua-Swirl® reached full sediment or floatable pollutant capacity in less than 12 months in the First Year Post-Construction period, the system should be inspected once every six (6) months or more frequently if past history warrants, and cleaned as needed. The Aqua -Swirl® should be cleaned annually regardless of whether it reaches its full sediment or floatable pollutant capacity. Carmel Elementary School Underground Dry Pond with Isolator Row(s) Inspection Check List Carmel Elementary School 9. BMP LOCATION MAP TP STOPSTOP DO NOTENTERSTOP1234567891012345678910STOPSTOPBUSONLY4TH AVENUESTOPSTOP DO NOTENTERSTOP1234567891012345678910STOPSTOPBUSONLYBMP: UNDERGROUND DRY PONDWITH ISOLATOR ROW(S)BMP: AS-6BMP: AS-6BMP: AS-7SHEET No.SCALE:Date:PROJECT:TITLE:Job No.8365 Keystone Crossing, Suite 201 Indianapolis, IN. 46240 (317) 202-0864 BMP LOCATION MAPP111-14-191"= 120' Carmel Elementary School 10. BMP DETAILS ™ Phone (888) 344-9044 Fax (423) 826-21122705 Kanasita Drive, Chattanooga, TN 37343STORMWATER TREATMENT SOLUTIONS www.aquashieldinc.comAqua-Swirl Concentrator Model AS-6 CFD PCS Standard DetailAS-6 PCS STD01/20/11Scale:Drawn By:Document:Date:JCW1:20U.S. Patent No. 6524473 and other Patent Pending* Please see accompanied Aqua-Swirl specification notes.* See Site Plan for actual system orientation.Backfill shall extend at least 18inches [457 mm] outward fromSwirl Concentrator and for thefull height of the SwirlConcentrator (including riser)extending laterally toundisturbed soils. (See MHDetail Below)STORMWATER TREATMENT SOLUTIONSPhone (888) 344-9044 www.aquashieldinc.com™ArchedBafflesSlide riser over top ringand bolt in 4 placesRiserSwirl Inlet/OutletBeddingUndisturbed SoilBackfillSection A-AGrade (Rim)Rim elevations to match finishedgrade. PCS risers should NOT be fieldcut by Contractor.Manhole Frame andCover by Manufacturer.(See Details)Plan ViewOutletAArched BafflesOctagonal Base PlatePipe couplingby Contractor.12" [305 mm]long Stub-outby Manufacturer.4.50"" [114 mm]0.50"" [13 mm]1.00"" [25 mm]Manhole Frame & Cover DetailNTSFor Non-Traffic Areas OnlySoil1.00"" [25 mm]Unless other traffic barriers are present,bollards shall be placed around access riser(s)in non-traffic areas to prevent inadvertentloading by maintenance vehicles.SoilPlace small amount ofconcrete [3,000 psi [20MPa] (min)] to supportand level manhole frame.DO NOT allow manholeframe to rest upon riser.RiserFrameCover4'" [1219 mm] Min.1'" [305 mm]Wrap Compressible ExpansionJoint Material to a minimum1-inch [25 mm] thickness aroundtop of riser to allow transfer ofinadvertent loading frommanhole cover to concrete slab.Backfill (90%Proctor Density)ConcreteConcrete8.00"" [203 mm]Gravel BackfillGravel BackfillCoverFrame1" [25 mm] ThickExpansion JointMaterial30" [762 mm]Riser#4 [13 mm] Rebar@ 6" [152 mm]Each Way3,000 psi [20 MPa](min) ConcreteManhole Frame & Cover DetailFor Traffic Loading AreasNTSIf traffic loading (H-20) is required or anticipated, a 4-foot [1.22 m]diameter, 14-inch [356 mm] thick reinforced concrete pad must beplaced over the Stormwater Treatment System Riser to support andlevel the manhole frame, as shown. The top of riser pipe must bewrapped with compressible expansion joint material to a minimum1-inch [25 mm] thickness to allow transfer of wheel loads frommanhole cover to concrete slab. Manhole cover shall bear on concreteslab and not on riser pipe. The concrete slab shall have a minimumstrength of 3,000 psi [20 MPa] and be reinforced with #4 [13 mm]reinforcing steel as shown. Minimum cover over reinforcing steel shallbe 1-inch [25 mm]. Top of manhole cover and concrete slab shall belevel with finish grade.Backfill (90%Proctor Density)Aqua-Swirl Polymer Coated Steel (PCS) StormwaterTreatment SystemAInlet ™ Phone (888) 344-9044 Fax (423) 826-21122705 Kanasita Drive, Chattanooga, TN 37343STORMWATER TREATMENT SOLUTIONS www.aquashieldinc.comAqua-Swirl Concentrator Model AS-7 CFD PCS Standard DetailAS-7 PCS STD01/20/11Scale:Drawn By:Document:Date:JCW1:30U.S. Patent No. 6524473 and other Patent Pending* Please see accompanied Aqua-Swirl specification notes.* See Site Plan for actual system orientation.4.50"" [114 mm]0.50"" [13 mm]1.00"" [25 mm]Manhole Frame & Cover DetailNTSFor Non-Traffic Areas OnlySoil1.00"" [25 mm]Unless other traffic barriers are present,bollards shall be placed around access riser(s)in non-traffic areas to prevent inadvertentloading by maintenance vehicles.SoilPlace small amount ofconcrete [3,000 psi [20MPa] (min)] to supportand level manhole frame.DO NOT allow manholeframe to rest upon riser.RiserFrameCover4'" [1219 mm] Min.1'" [305 mm]Wrap Compressible ExpansionJoint Material to a minimum1-inch [25 mm] thickness aroundtop of riser to allow transfer ofinadvertent loading frommanhole cover to concrete slab.Backfill (90%Proctor Density)ConcreteConcrete8.00"" [203 mm]Gravel BackfillGravel BackfillCoverFrame1" [25 mm] ThickExpansion JointMaterial30" [762 mm]Riser#4 [13 mm] Rebar@ 6" [152 mm]Each Way3,000 psi [20 MPa](min) ConcreteManhole Frame & Cover DetailFor Traffic Loading AreasNTSIf traffic loading (H-20) is required or anticipated, a 4-foot [1.22 m]diameter, 14-inch [356 mm] thick reinforced concrete pad must beplaced over the Stormwater Treatment System Riser to support andlevel the manhole frame, as shown. The top of riser pipe must bewrapped with compressible expansion joint material to a minimum1-inch [25 mm] thickness to allow transfer of wheel loads frommanhole cover to concrete slab. Manhole cover shall bear on concreteslab and not on riser pipe. The concrete slab shall have a minimumstrength of 3,000 psi [20 MPa] and be reinforced with #4 [13 mm]reinforcing steel as shown. Minimum cover over reinforcing steel shallbe 1-inch [25 mm]. Top of manhole cover and concrete slab shall belevel with finish grade.Backfill (90%Proctor Density)VentArchedBafflesSlide riser over top ringand bolt in 4 placesRiserSwirl Inlet/OutletGrade (Rim)Rim elevations to match finishedgrade. PCS risers should NOT be fieldcut by Contractor.Manhole Frame andCover by Manufacturer.(See Details)STORMWATER TREATMENT SOLUTIONSPhone (888) 344-9044 www.aquashieldinc.com™Backfill shall extend at least 18inches [457 mm] outward fromSwirl Concentrator and for thefull height of the SwirlConcentrator (including riser)extending laterally toundisturbed soils. (See MHDetail Below)BeddingUndisturbed SoilBackfillSection A-APlan ViewOutletAVentArched BafflesOctagonal Base PlatePipe couplingby Contractor.12" [305 mm]long Stub-outby Manufacturer.Aqua-Swirl Polymer Coated Steel (PCS) StormwaterTreatment SystemAInlet 7037 Ridge Road, Hanover, MD 21076866-740-3318 410-796-5505 866-376-8511 FAX20 MIL PE84"Ø BULKHEADTYP.120°45°120°84"Ø WEIR PLATE TYP.284'-0"97'-6"3'-0" TYP. 50'-0"18'-6"38'-6"38'-6"4'-6"30"Ø STUB J212'-6"36"Ø RISER P185'-0"36"Ø RISER W285'-0"30"Ø STUB W35'-6"30"Ø STUB E113'-0"36"Ø RISER K111'-6"12"Ø STUB L13'-0"12"Ø STUB J1C3x4.1 C HA NN E L O PT I ON 97'-0" MAKCHECKED:DRAWN:MAKDESIGNED:APPROVED:I:\MERLIN\PROJECT\ACTIVE\631000\631048\631048-10-CMP DETENTION\DRAWINGS\631048-010-CMP CONFAB.DWG 11/13/2019 11:34 AM SHEET NO.:OFP1 DATE:PROJECT No.:631048SEQ. No.:010PROPOSALCONTECHDRAWING84"Ø UNDERGROUND DETENTION SYSTEM - 631048-010CARMEL ELEMETARYINDIANAPOLIS, INSITE DESIGNATION:The design and information shown on this drawing is providedas a service to the project owner, engineer and contractor byContech Engineered Solutions LLC ("Contech"). Neither thisdrawing, nor any part thereof, may be used, reproduced ormodified in any manner without the prior written consent ofContech. Failure to comply is done at the user's own risk andContech expressly disclaims any liability or responsibility forsuch use.If discrepancies between the supplied information upon whichthe drawing is based and actual field conditions are encounteredas site work progresses, these discrepancies must be reportedto Contech immediately for re-evaluation of the design. Contechaccepts no liability for designs based on missing, incomplete orinaccurate information supplied by others.www.ContechES.com4REVISION DESCRIPTIONDATEMARKBY BAND, TYPICALSEE DETAIL SHEET P3NOTES·ALL RISER AND STUB DIMENSIONS ARE TO CENTERLINE.·ALL ELEVATIONS, DIMENSIONS, AND LOCATIONS OF RISERS AND INLETS, SHALL BE VERIFIEDBY THE ENGINEER OF RECORD (EOR) PRIOR TO RELEASING FOR FABRICATION.· ALL FITTINGS AND REINFORCEMENT COMPLY WITH ASTM A998.· ALL RISERS AND STUBS ARE 223" x 12" CORRUGATION AND 16 GAGE UNLESS OTHERWISENOTED.·RISERS TO BE FIELD TRIMMED TO GRADE AS REQUIRED, BY CONTRACTOR.·QUANTITY OF PIPE SHOWN DOES NOT PROVIDE EXTRA PIPE FOR CONNECTING THE SYSTEM TOEXISTING PIPE OR DRAINAGE STRUCTURES. OUR SYSTEM AS DETAILED PROVIDES NOMINALINLET AND/OR OUTLET PIPE STUB FOR CONNECTION TO EXISTING DRAINAGE FACILITIES. IFADDITIONAL PIPE IS NEEDED IT IS THE RESPONSIBILITY OF THE CONTRACTOR.·ALL ACCESS CASTINGS ARE THE RESPONSIBILITY OF THE CONTRACTOR AND ARE NOTSUPPLIED BY CONTECH.ASSEMBLYSCALE: 1" = 50'PIPE STORAGE: 73,717 CFSTRUCTURAL BACKFILL STORAGE: PER EOR CFTOTAL STORAGE PROVIDED: PER EOR CFLOADING: H20PIPE INV. = 843.8'±11/13/19THE UNDERSIGNED HEREBY APPROVES THE ATTACHED(4) PAGES INCLUDING THE FOLLOWING:CUSTOMER·PIPE STORAGE = 73,717 CF·MAINLINE PIPE GAGE = 14·WALL TYPE = SOLID/PERFORATED·DIAMETER = 84"·FINISH = ALT2·CORRUGATION = 5x1DATESTUB INFORMATIONPIECESTUB INVERTSYSTEMINVERT30"Ø STUB E1847.30843.8012"Ø STUB J1847.30843.8030"Ø STUB J2847.30843.8012"Ø STUB L1847.30843.8030"Ø STUB W3847.30843.80RISER INFORMATIONPIECERIM ELEV.SYSTEMINVERT36"Ø RISER K1855.00843.8036"Ø RISER P1855.00843.8036"Ø RISER W2855.00843.80KEY SOLIDPERFORATED 1.75" CCTYPCOIL WIDTHOPEN AREA = 3.33 SQ IN/SQ FT2.711"9@2.711" = 24.399"EDGE SPACING EQUAL ON BOTH SIDESNOTES:1.PERFORATIONS MEET AASHTO AND ASTM SPECIFICATIONS.2.PERFORATION OPEN AREA PER SQUARE FOOT OF PIPE IS BASEDON THE NOMINAL DIAMETER AND LENGTH OF PIPE.3.DIMENSIONS SUBJECT TO MANUFACTURER'S TOLERANCES.4.ALL HOLES 3/8"Ø.EXFILTRATION AREASTANDARD PERFORATION PATTERNSAPPROXIMATE AREA PER LINEAR FOOT OF PIPEPIPECORRUGATION PATTERN2 2/3" x 1/2"3" x 1"5" x 1"ULTRA FLO84"Ø85.5 SQ. IN.90.3 SQ. IN.87.9 SQ. IN.NOTES:·GAGE AND COATING LIMITATIONS APPLY. 5" x 1" IS NOT AVAILABLE INALUMINUM.·DIMENSIONS SUBJECT TO MANUFACTURER'S TOLERANCES.TYPICAL PERFORATION DETAILNOT TO SCALETYPICAL SECTION VIEWNOT TO SCALENOTE: IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THEPROJECT, A GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THEGEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THEPOTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THESURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFER TO THECORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL INFORMATION.84" TYP.36"TYP.27" SEE TYPICALBACKFILL DETAILNOTESLIMITS OFREQUIREDBACKFILL20 MIL PEIMPERMEABLELINER OVERTOP OF PIPE(IF REQUIRED)1MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR PROPER COMPACTION OF HAUNCH MATERIALS UNDER THE PIPE. THE TRENCH WIDTH IS THE MINIMUM AMOUNT REQUIRED FOR PROPER INSTALLATION AND TO SUPPORT HORIZONTAL PRESSURE FROMTHE PIPE. THE MANUFACTURER'S SUGGESTED MINIMUM VALUE IS: 1.5D + 12".1aMINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE:3.0D BUT NO LESS THAN D + 4'0".2FOUNDATION SHALL BE WELL CONSOLIDATED & STABLE, CAPABLE OF SUPPORTING FILL MATERIAL LOAD.3OPEN-GRADED GRANULAR BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THEBOTTOM OF THE PIPE, 4" TO 6" IN DEPTH. SUGGESTED PARTICLE SIZE OF 1/2 CORRUGATION DEPTH.4CORRUGATED STEEL PIPE (CSP / HEL-COR).5HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION.5aTHE BACKFILL MATERIAL SHALL BE A FREE-DRAINING, ANGULAR, WASHED-STONE PER AASHTO M 43 SIZE #3 WITH A ½” - 2” PARTICLESIZE OR APPROVED EQUAL. MATERIAL SHALL BE PLACED IN 12" MAXIMUM LIFTS AND SHALL BE WORKED INTO THE PIPE HAUNCHES BYMEANS OF SHOVEL-SLICING, RODDING, AIR-TAMPER, VIBRATORY PLATE OR OTHER EFFECTIVE METHODS. COMPACTION IS CONSIDEREDADEQUATE WHEN A DENSITY EQUIVALENT TO 90% STANDARD PROCTOR IS ACHIEVED OR WHEN NO FURTHER YIELDING OF THEMATERIAL IS OBSERVED UNDER THE COMPACTOR OR UNDER FOOT. THE PROJECT ENGINEER OR HIS REPRESENTATIVE MUST BESATISFIED WITH THE LEVEL OF COMPACTION. INADEQUATE COMPACTION CAN LEAD TO EXCESSIVE PIPE DEFLECTIONS ANDSETTLEMENT OF THE SOILS OVER THE SYSTEM. BACKFILL SHALL BE PLACED SUCH THAT THERE IS NO MORE THAN A TWO-LIFTDIFFERENTIAL BETWEEN THE SIDES OF ANY PIPE IN THE SYSTEM AT ALL TIMES DURING THE BACKFILL PROCESS. BACKFILL SHALL BEADVANCED ALONG THE LENGTH OF THE SYSTEM AT THE SAME RATE TO AVOID DIFFERENTIAL LOADING ON ANY PIPES IN THE SYSTEM.6INITIAL OPEN GRADED GRANULAR BACKFILL ABOVE PIPE MAY INCLUDE ROAD BASE MATERIAL (AND RIGID PAVEMENT IF APPLICABLE).SEE TABLE ABOVE.6aTOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROM TOP OF PIPE TO BOTTOM OFFLEXIBLE PAVEMENT OR TOP OF RIGID PAVEMENT.7FINAL BACKFILL MATERIAL SELECTION AND COMPACTION REQUIREMENTS SHALL FOLLOW THE PROJECT PLANS AND SPECIFICATIONSPER THE ENGINEER OF RECORD.NOTES:·GEOTEXTILE SHOULD BE USED TO PREVENT SOIL MIGRATION INTO VARYING SOIL TYPES (PROJECT ENGINEER).·FOR MULTIPLE BARREL INSTALLATIONS THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE PIPE DIA. / 2 BUT NO LESS THAN12", OR 36" FOR PIPE DIAMETERS 72" AND LARGER.·CONTACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING (TABLE C12.6.7-1).FINAL BACKFILLGRANULAR BACKFILL DIA M E T E R ( D )IN SITUDIAMETERMIN.COVERCORR.PROFILE6"-10"12"1 1/2" x 1/4"12"-48"12"2 2/3" x 1/2"54"-96"12"3" x 1", 5" x 1"102"-144"18"3" x 1", 5" x 1"LIMITS OF DRAIN ROCK MAY BEPLACED BELOW PIPE AS DEFINEDBY ENGINEER OF RECORD.FOUNDATION SPEC STILLAPPLIES AND BEDDING WILL BETHE FIRST 4" TO 6" BELOWINVERT4TYPICAL BACKFILL DETAILNOT TO SCALEEMBANKMENT CONDITIONTRENCH CONDITION66aBEDDINGFOUNDATIONPIPE EMBEDMENT 5a7532INITIAL FILL ENVELOPE 1 1a7037 Ridge Road, Hanover, MD 21076866-740-3318 410-796-5505 866-376-8511 FAX MAKCHECKED:DRAWN:MAKDESIGNED:APPROVED:I:\MERLIN\PROJECT\ACTIVE\631000\631048\631048-10-CMP DETENTION\DRAWINGS\631048-010-CMP CONFAB.DWG 11/13/2019 11:34 AM SHEET NO.:OFP2 DATE:PROJECT No.:631048SEQ. No.:010PROPOSALCONTECHDRAWING84"Ø UNDERGROUND DETENTION SYSTEM - 631048-010CARMEL ELEMETARYINDIANAPOLIS, INSITE DESIGNATION:The design and information shown on this drawing is providedas a service to the project owner, engineer and contractor byContech Engineered Solutions LLC ("Contech"). Neither thisdrawing, nor any part thereof, may be used, reproduced ormodified in any manner without the prior written consent ofContech. Failure to comply is done at the user's own risk andContech expressly disclaims any liability or responsibility forsuch use.If discrepancies between the supplied information upon whichthe drawing is based and actual field conditions are encounteredas site work progresses, these discrepancies must be reportedto Contech immediately for re-evaluation of the design. Contechaccepts no liability for designs based on missing, incomplete orinaccurate information supplied by others.www.ContechES.com4REVISION DESCRIPTIONDATEMARKBY PIPE Ø 2'-6"PIPE Ø2'-6"PIPE Ø FRONTTYPICAL MANWAY DETAILNOT TO SCALE1'-0" MIN.48"Ø to 90"Ø FITTING REINFORCEMENTMAY BE REQUIRED BASED ON HEIGHT OFCOVER AND LIVE LOAD CONDITIONPLAN11/13/19 FLAT GASKETFLAT GASKETHUGGERBANDCONNECTION DETAIL(SBBS)2 2/3"x1/2" RE-ROLLED END HEL-COR PIPEH-12 HUGGER BAND DETAILNOT TO SCALEGENERAL NOTES:1.JOINT IS TO BE ASSEMBLED PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4.2.BAND MATERIALS AND/OR COATING CAN VARY BY LOCATION. CONTACT YOUR CONTECH REPRESENTATIVE FOR AVAILABILITY.3.BANDS ARE SHAPED TO MATCH THE PIPE-ARCH WHEN APPLICABLE.4.BANDS ARE NORMALLY FURNISHED AS FOLLOWS:·12" THRU 48" 1-PIECE·54" THRU 96" 2-PIECES·102" THRU 144" 3-PIECES5.BAND FASTENERS ARE ATTACHED WITH SPOT WELDS, RIVETS OR HAND WELDS.6.ALL CMP IS REROLLED TO HAVE ANNULAR END CORRUGATIONS OF 2 2/3"x1/2"7.DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES.8.ORDER SHALL DESIGNATE GASKET OPTION, IF REQUIRED (SEE DETAILS ABOVE).SINGLE BAR,BOLT AND STRAP (SBBS)12 1/8"10 1/4"12" TECHCO BAND ANGLES 1/2" DIA. BOLT12" RISER BAND DETAILNOT TO SCALEPLAIN END CMP RISER PIPECONNECTION DETAIL7 1/2" TECHCO SHOWN - MAY VARYSTUB HEIGHT2'-0" RECOMMENDED12" MIN.MAINLINEPIPERISEREXTENSIONFLAT BAND SHOWN,MAY VARY (NOGASKET)GENERAL NOTES:1.DELIVERED BAND STYLE AND FASTENER TYPE MAY VARY BY FABRICATION PLANT.2.JOINT IS TO BE ASSEMBLED PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4.3.BAND MATERIAL AND GAGE TO BE SAME AS RISER MATERIAL.4.IF RISER HAS A HEIGHT OF COVER OF 10' OR MORE, USE A SLIP JOINT.5.BANDS ARE NORMALLY FURNISHED AS FOLLOWS:·12" THRU 48" 1-PIECE·54" 2-PIECES6.ALL RISER JOINT COMPONENTS WILL BE FIELD ASSEMBLED.7.MANHOLE RISERS IN APPLICATIONS WHERE TRAFFIC LOADS ARE IMPOSED REQUIRE SPECIAL DESIGN CONSIDERATIONS.8.DIMENSIONS SUBJECT TO MANUFACTURING TOLERANCES.ELEVATION VIEWOF CMP AND RISER7037 Ridge Road, Hanover, MD 21076866-740-3318 410-796-5505 866-376-8511 FAX MAKCHECKED:DRAWN:MAKDESIGNED:APPROVED:I:\MERLIN\PROJECT\ACTIVE\631000\631048\631048-10-CMP DETENTION\DRAWINGS\631048-010-CMP CONFAB.DWG 11/13/2019 11:34 AM SHEET NO.:OFP3 DATE:PROJECT No.:631048SEQ. No.:010PROPOSALCONTECHDRAWING84"Ø UNDERGROUND DETENTION SYSTEM - 631048-010CARMEL ELEMETARYINDIANAPOLIS, INSITE DESIGNATION:The design and information shown on this drawing is providedas a service to the project owner, engineer and contractor byContech Engineered Solutions LLC ("Contech"). Neither thisdrawing, nor any part thereof, may be used, reproduced ormodified in any manner without the prior written consent ofContech. Failure to comply is done at the user's own risk andContech expressly disclaims any liability or responsibility forsuch use.If discrepancies between the supplied information upon whichthe drawing is based and actual field conditions are encounteredas site work progresses, these discrepancies must be reportedto Contech immediately for re-evaluation of the design. Contechaccepts no liability for designs based on missing, incomplete orinaccurate information supplied by others.www.ContechES.com4REVISION DESCRIPTIONDATEMARKBY 11/13/19 MANHOLE CAP DETAILNOT TO SCALE8"11" TYP.2" COVER TYP.1" GAP (TYP. ALL SIDES)NOTES:1.DESIGN IN ACCORDANCE WITH AASHTO, 17thEDITION AND ACI 350.2.DESIGN LOAD HS25.3.EARTH COVER = 1' MAX.4.CONCRETE STRENGTH = 4,000 psi5.REINFORCING STEEL = ASTM A615, GRADE 60.6.PROVIDE ADDITIONAL REINFORCING AROUNDOPENINGS EQUAL TO THE BARS INTERRUPTED,HALF EACH SIDE. ADDITIONAL BARS TO BE IN THESAME PLANE.AA 2" COVER(TYP)SECTION VIEWROUND OPTION PLAN VIEWSQUARE OPTION PLAN VIEWØ CMP RISERINTERRUPTED BARREPLACEMENT,SEE NOTE 6.STANDARDREINFORCING,SEE TABLEOPENING INPROTECTIONSLAB FORACESS#4 DIAGONAL TRIMBAR (TYP. 4 PLACES),SEE NOTE 7.AINTERRUPTED BARREPLACEMENT, SEENOTE 6.BOPENING INPROTECTIONSLAB FORACCESS#4 DIAGONAL TRIMBAR (TYP. 4 PLACES),SEE NOTE 7.STANDARDREINFORCING,SEE TABLEGASKET MATERIALSUFFICIENT TO PREVENTSLAB FROM BEARING ONRISER TO BE PROVIDED BYCONTRACTOR.2" COVER(TYP.)ØBREINFORCING TABLEØ CMPRISERAB ØREINFORCING**BEARINGPRESSURE(PSF)24"4'Ø4'x4'26"#5 @ 10" OCEW#5 @ 10" OCEW2,5401,90030"4'-6"Ø4'-6" x 4'-6"32"#5 @ 10" OCEW#5 @ 9" OCEW2,2601,67036"5'Ø5' x 5'38"#5 @ 9" OCEW#5 @ 8" OCEW2,0601,50042"5'-6"Ø5'-6" x 5'-6"44"#5 @ 8" OCEW#5 @ 8" OCEW1,4901,37048"6'Ø6' x 6'50"#5 @ 7" OCEW#5 @ 7" OCEW1,2101,270** ASSUMED SOIL BEARING CAPACITY1'-0"A2 " COVER ( TYP . ) 2 " COVER ( TYP )7.TRIM OPENING WITH DIAGONAL #4 BARS, EXTEND BARS AMINIMUM OF 12" BEYOND OPENING, BEND BARS AS REQUIREDTO MAINTAIN BAR COVER.8.PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED ANDINSTALLED BY CONTRACTOR.9.DETAIL DESIGN BY DELTA ENGINEERS, ARCHITECTS AND LANDSURVEYORS, ENDWELL, NY.ØB36"Ø MAX., HS-25 ACCESS CASTINGWITH GRADE RINGS AS REQUIRED, TOBE PROVIDED AND INSTALLED BYCONTRACTOR. MAY BE TOP MOUNTED(AS SHOWN) OR RECESSED.CMPPROTECTIONSLABVARIESRIM/FINISHEDGRADEACCESS CASTING NOT SUPPLIED BY CONTECH7037 Ridge Road, Hanover, MD 21076866-740-3318 410-796-5505 866-376-8511 FAX MAKCHECKED:DRAWN:MAKDESIGNED:APPROVED:I:\MERLIN\PROJECT\ACTIVE\631000\631048\631048-10-CMP DETENTION\DRAWINGS\631048-010-CMP CONFAB.DWG 11/13/2019 11:34 AM SHEET NO.:OFP4 DATE:PROJECT No.:631048SEQ. No.:010PROPOSALCONTECHDRAWING84"Ø UNDERGROUND DETENTION SYSTEM - 631048-010CARMEL ELEMETARYINDIANAPOLIS, INSITE DESIGNATION:The design and information shown on this drawing is providedas a service to the project owner, engineer and contractor byContech Engineered Solutions LLC ("Contech"). Neither thisdrawing, nor any part thereof, may be used, reproduced ormodified in any manner without the prior written consent ofContech. Failure to comply is done at the user's own risk andContech expressly disclaims any liability or responsibility forsuch use.If discrepancies between the supplied information upon whichthe drawing is based and actual field conditions are encounteredas site work progresses, these discrepancies must be reportedto Contech immediately for re-evaluation of the design. Contechaccepts no liability for designs based on missing, incomplete orinaccurate information supplied by others.www.ContechES.comCONSTRUCTION LOADSFOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVERTHE 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 FINISHEDGRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC.PIPE SPAN,INCHES18-50MINIMUM COVER (FT)AXLE LOADS(kips)50-7575-110110-15012-422.02.53.03.04.03.53.048-723.03.078-1203.54.04.04.54.54.0126-1443.5*MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONALCOVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TOTHE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SURFACE. HEIGHT OFCOVERTEMPORARY COVER FORCONSTRUCTION LOADSFINISHEDGRADE CONSTRUCTION LOADING DIAGRAMNOT TO SCALESCOPETHIS SPECIFICATION COVERS THE MANUFACTURE ANDINSTALLATION OF THE CORRUGATED STEEL PIPE (CSP) DETAILED INTHE PROJECT PLANS.MATERIALTHE ALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THEAPPLICABLE REQUIREMENTS OF AASHTO M274 OR ASTM A929.PIPETHE CSP SHALL BE MANUFACTURED IN ACCORDANCE WITH THEAPPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTM A760. THEPIPE SIZES, GAGES AND CORRUGATIONS SHALL BE AS SHOWN ONTHE PROJECT PLANS.ALL FABRICATION OF THE PRODUCT SHALL OCCUR WITHIN THEUNITED STATES.HANDLING AND ASSEMBLYSHALL BE IN ACCORDANCE WITH RECOMMENDATIONS OF THENATIONAL CORRUGATED STEEL PIPE ASSOCIATION (NCSPA)INSTALLATIONSHALL BE IN ACCORDANCE WITH AASHTO STANDARDSPECIFICATIONS FOR HIGHWAY BRIDGES, SECTION 26, DIVISION IIOR ASTM A798 AND IN CONFORMANCE WITH THE PROJECT PLANSAND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES ORCONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVEWITH THE SITE ENGINEER.IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TOFOLLOW OSHA GUIDELINES FOR SAFE PRACTICES.SPECIFICATION FOR CORRUGATED STEEL PIPE-ALUMINIZED TYPE 2 STEELMATERIAL SPECIFICATIONNOT TO SCALE4REVISION DESCRIPTIONDATEMARKBY 11/13/19