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Home My WebLink About12955 Old Meridian St - BMP Detail C2-5 Phone (888) 344-9044 Fax (423) 826-2112 www.aquashieldinc.comAqua-Swirl Concentrator Model AS-4 PCS Standard DetailAS-4 PCS STD01/12/11Scale:Drawn By:Document:Date:JCW1:20U.S. Patent No. 6524473 and other Patent PendingAInlet OutletAPipe couplingby Contractor.12" long Stub-outby Manufacturer.Pipe couplingby Contractor.12" long Stub-outby Manufacturer.VentArched BaffleOctagonal Base PlatePhone (888) 344-9044www.aquashieldinc.comVentArchedBaffleSlide riser over top ringand bolt in 4 placesRiserSwirl InletSwirl OutletBeddingUndisturbed SoilBackfillSection A-APlan ViewGrade (Rim)Rim elevations to match finishedgrade. PCS risers should NOT be fieldcut by Contractor.Manhole Frame andCover by Manufacturer.(See Details)Backfill shall extend at least 3feet [914 mm] outward fromSwirl Concentrator and for thefull height of the SwirlConcentrator (including riser)extending laterally toundisturbed soils. (See MHDetail Below)4 1/2" [114 mm]CoverFrame1" [25 mm] ThickExpansion JointMaterial30" [762 mm]Riser#4 [13 mm] Rebar@ 6" [152 mm]Each Way14" [356 mm]1/2" [13 mm]3,000 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)48" [1219 mm]JPS Consulting Engineers - K:\Civil Projects\19JPSC26 Meridian Design Center\Drawings\C2-5 BMP Detail.dwg August 22, 2019 - 2:47 PM Nvergatos BMPDETAILSAS NOTEDNBVNBVNBVC2-5CONSTRUCTIONDOCUMENTS19 AUGUST 201919JPSC26AQUA-SWIRL™ CSP SPECIFICATION NOTES 08-12-101.Manufacturer shall be responsible for complete assembly of Swirl Concentrator.2. Swirl Concentrator shall be fabricated from polymer precoated steel sheet for corrugated steelpipe (CSP), and shall comply with ASTM A 760 and ASTM A 742.3. Stub outs and internal components shall be supplied by manufacturer and MIG welded usingaccepted welding practices.4. Manufacturer shall supply direct access to Swirl Concentrator via 30-inch ID riser(s). Riser shouldnot be field cut by Contractor, Riser should maintain its finish cut length as supplied by manufacturer tomatch final grade per approved site elevations (as indicated on approved shop drawing). If necessary toextend riser, Contractor should use adjusting rings to bring top of structure to grade.5. Contractor shall supply pipe couplings to and from Swirl Concentrator, which shall be Mar-Mac,Fernco, or Mission style flexible boot with stainless steel tension bands and shear guard.6. Contractor shall prepare excavation and off-load Swirl Concentrator. Contractor is responsible forbedding and backfill around Swirl Concentrator as detailed on site plan. (see notes 11 and 12)7. Manufacturer shall supply standard manhole frame(s) and cover(s). (Traffic rated H20)8. Where traffic loading (H-20) is required or anticipated, a 4-foot diameter, 14-inch thick reinforcedconcrete pad must be placed over the Swirl Concentrator to support and level the manhole frame. Thetop of riser pipe must be wrapped with compressible expansion joint material to a minimum 1-inchthickness to allow transfer of wheel loads from manhole cover to concrete slab. Manhole cover shall bearon concrete slab and not on riser pipe. The concrete slab shall have a minimum strength of 3,000 psi andbe reinforced with #4 reinforcing steel (per drawing). Minimum cover over reinforcing steel shall be1-inch. Top of manhole cover and concrete slab shall be level with finish grade.9. Unless other trafficbarriers are present, bollards shall be placed around access risers in non-traffic areas to preventinadvertent loading by maintenance vehicles. Sample of typical bollard installation detail andrecommended locations of bollards around the Swirl Concentrator can be provided upon request.10. Where high groundwater elevations are present or anticipated, Contractor shall supply concreteanti-floatation pad underneath and poured over the octagonal base plate of the swirl (see Anti-FloatationBase Detail) to prevent buoyancy and base plate deflection (details, if necessary, available upon request).11.Excavation and Bedding - The trench and trench bottom shall be constructed in accordance withASTM A 798 Section 5, Trench Excavation, Section 6, Foundation, and Section 7, Bedding. The CSP SwirlConcentrator shall be installed on a stable base consisting of at least 6-inches of fine, readily compactedsoil or granular fill material, and compacted to 95% proctor density. Bedding shall not contain stonesretained on a 3-inch ring, frozen lumps, highly plastic clay, organic material, corrosive material, or otherdeleterious foreign materials. All required safety precautions for Swirl Concentrator installation are theresponsibility of the Contractor and shall be per OSHA approved methods.12.Backfill Requirements - Backfill materials shall be fine, readily compacted soil or granular fillmaterial, and compacted to 90% proctor density. Processed granular materials with excellent structuralcharacteristics are preferred. Coarse grained soils of USCS Groups GW, GP, GM, GC, SW, and SP asdescribed in ASTM D 2487 are generally acceptable materials when compacted to 90% proctor density.Backfill shall not contain stones retained on a 3-inch ring, frozen lumps, highly plastic clay, organicmaterial, corrosive material, or other deleterious foreign materials. Backfilling shall conform to ASTM A798, Section 10, Structural Backfill Placement. Backfill shall be placed in 6 to 12 inch layers or “lifts” andcompacted before adding the next lift. Backfill shall extend at least 3 feet outward from SwirlConcentrator and for the full height of the Swirl Concentrator (including riser(s)) extending laterally toundisturbed soils.