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Home My WebLink About07 NWX Building I Stormwater Report Stormwater Design Report Northwest Crossing – Building I November 18, 2021 1 INTRODUCTION This summary report provides hydrologic and hydraulic calculations for sizing of detention storage facilities and other storm drainage structures for development of the Northwest Crossing Building I commercial site, in accordance with the City of Bozeman Design Standards. The proposed site consists of a commercial building bordered on the South by West Oak Street and to the West by Twin Lakes Avenue. The purpose of the report and calculations is to demonstrate the following: - Post- development peak runoff does not exceed pre-construction (historic) conditions for the 10-year storm event - The 25-year peak runoff is conveyed by underground storm drain facility with no surface overflow - Storm water treatment is provided to intercept and contain sediment and floating debris on site, for eventual removal and disposal. 2 PROJECT LOCATION AND DESCRIPTION Building I is a 61,498 square foot (1.412 acre) commercial site located in the Northwest Crossing development. The project site is bordered on the South by West Oak Street and to the West by Twin Lakes Avenue. The Northwest Crossing development is legally described as: Tract 5 of Certificate of Survey No. 2552, located in the NE1/4 of Section 4, Township 2 South, Range 5 East, Principal Meridian, Gallatin County, Montana. 3 EXISTING CONDITIONS The pre-existing site consists of vacant agricultural land generally draining to the North at an average slope of 1.75%. A wide depression gathers stormwater and conveys it North, eventually connecting to Baxter Ditch roughly 0.5 miles downstream of the site. NRCS web soil survey indicates that the site soils are Meadowcreek loam, which is a hydrologic group C soil. 4 POST-DEVELOPMENT DRAINAGE Development will split the site into four basins: · Drainage from the North and East parking areas will flow to a storage and infiltration stormwater system within the North parking stall · Drainage from the building and center parking area will flow to a second storage and infiltration stormwater system within the center parking stall · Drainage from landscape areas along the West and South side of the site will flow into the Twin Lakes Avenue right-of-way where it will be conveyed to that road’s stormwater system · Drainage from the landscape area along the East portion of the site will flow East into the adjacent eastern lot. Table 1 further splits the site into subbasins which each drain to distinct catch basins within the site. 5 HYDROLOGIC METHOD/APPROACH Pre and Post-development calculations were performed with Autodesk Hydraflow Express software using the rational method to determine site runoff rates. City of Bozeman IDF curves were used. Time of concentration calculations were performed using the NRCS TR-55 method for the longest flow path (subbasin B), which resulted in a 5 minute time of concentration. All other basins have shorter longest flow paths, so they default to the minimum 5 minute time of concentration. Table 1: Storm Basins and Flow Rates SUB- BASIN DRAINS TO… TOTAL (AC) LAND- SCAPE (AC) IMPER- VIOUS (AC) CN TC (MIN) Q10 (CFS) Q25 (CFS) V10 (CF) V25 (CF) A Twin Lakes Ave 0.022 - 0.0222 98 5 0.07 0.07 19 22 B N Stormtech 0.663 0.083 0.5800 97 5 2.06 2.45 618 735 C Twin Lakes Ave 0.087 0.070 0.0167 89 5 0.26 0.31 77 92 D S Stormtech 0.147 - 0.1474 98 5 0.47 0.56 142 169 E S Stormtech 0.131 0.012 0.1183 97 5 0.41 0.48 122 145 F S Stormtech 0.241 - 0.2413 98 5 0.76 0.9 227 270 G Drywell 0.072 0.051 0.0210 89 5 0.2 0.24 60 72 H Future Dev. 0.049 0.047 0.0018 86 5 0.14 0.16 42 49 TOTAL 1.412 0.263 1.1485 Table 2: Composite Storm Basin Runoff and Storage FLOW TO EACH DRAINAGE BASIN REQUIRED DETENTION (CF) BASIN Q10 (CFS) Q25 (CFS) N STORMTECH 2.06 2.45 735 S STORMTECH 1.64 1.94 584 Onsite Total 3.7 4.39 1319 TWIN LAKES AVE 0.33 0.38 114 FUTURE DEV. 0.14 0.16 49 DRYWELL 0.2 0.24 72 Offsite Total 0.67 0.78 PRE-DEVELOPMENT 1.1 1.33 Composite runoff curve number values were determined using a weighted average between impervious surfaces (98) and grass planted in group C soil (86). Subbasin areas, ground cover curve numbers, runoff flow rates and runoff storage volumes are shown below in Table 1. Runoff storage volumes for each drainage basin are shown in Table 2. Stormtech SC-160LP chambers will be used to store and infiltrate the runoff generated by a 25- year storm for subbasins B, D, E, and F. Drainage subbasin G will be collected via gravel trenches along the South side of the commercial building and piped to a 5’-deep, Ø48” drywell that will provide adequate storage and infiltration for the 25 year storm. Pre-development runoff from the site drained to a single basin. During 10-year storm events peak runoff was calculated at 1.10 cubic feet per second (cfs). Due to grading constraints not all stormwater can be captured on site. Storm subbasins A, C, and H contribute to offsite runoff. The ultimate downstream drainage for all offsite runoff will be determined during future development of the site to the East. Assuming all offsite flows converge, the peak offsite runoff during a 10-year storm is 0.67cfs. During a 100-year storm event site grades will convey overflowing stormwater through the parking lot to the NW corner of the site where runoff will flow into Twin Lakes Avenue. 6 STORM DRAIN PIPING Stormwater inlets and pipes are designed to convey the peak flow of a 25-year storm event as required by the Design Standards and Specifications Policy of the City of Bozeman. Site stormwater pipes range between Ø6” and Ø12”. Pipe sizing calculations are included in Appendix D. 7 MAINTENANCE Storm drain inlets, catch basins, and piping will be inspected at least once per year and following large storm events. Any necessary repair or maintenance should be prioritized and scheduled through the spring, summer, and fall. These items may include inspecting for any damage, removing blockages, cleaning and flushing the length of pipes, establishing vegetation on bare slopes at or near inlets, and sediment removal. Stormtech chambers shall be maintained according to the Advanced Drainage Systems maintenance guidelines. 8 SUMMARY Most runoff from the development of Building I will be conveyed to underground Stormtech chambers which will provide storage and water quality treatment through infiltration. Parking lots, walkways, inlets, and pipes were designed in conformance with the current City of Bozeman Design standards. 9 APPENDICIES A. Stormwater Basin Map B. Bozeman Rainfall Intensity Duration Frequency (IDF) Data C. Subbasin Rational Method Calculations D. Pipe Capacity Calculations E. Stormtech Chamber Design Details F. Stormtech SC-160LP Details and Maintenance Guide APPENDIX A Stormwater Basin Map S SSB H D E F G A C -6. 2 0 %-1.12%END SHEET FLOW BEGIN SHALLOW CONCENTRATED FLOWTWIN LAKES AVENUEWEST OAK STREET "SOUTH" STORMTECH CHAMBERS "NORTH" STORMTECH CHAMBERS FIGURE NUMBER © PROJECT NO.DRAWN BY: DSGN. BY: APPR. BY: DATE: COPYRIGHT MORRISON-MAIERLE,2022 Plotted by celine saucier on Feb/4/2022 engineers surveyors planners scientists MorrisonMaierle 1 Engineering Place Helena, MT 59602 406.442.3050 www.m-m.net N:\5659\009 NWX Building B Site Plan\04 Design\Calcs\storm areas.dwg5659.009 BOZEMAN MONTANA # NORTHWEST CROSSING BUILDING B STORMWATER DRAINAGE # 11/2021 15 300 SCALE IN FEET LEGEND LANDSCAPE APPENDIX B Bozeman Rainfall Intensity Duration Frequency (IDF) Data 0 5 10 15 20 25 30 35 40 45 50 55 60 Int. (in/hr) 0.00 0.00 2.00 2.00 4.00 4.00 6.00 6.00 8.00 8.00 10.00 10.00 12.00 12.00 14.00 14.00 Time (min) 100-Yr 50-Yr 25-Yr 10-Yr 5-Yr 2-Yr IDF file: COB IDF.IDF Express Hydraflow IDF Curves Hydraflow IDF Report Page 1 of 1 Return Equation Coefficients (FHA) Period (Yrs) B D E (N/A) 1 0.0000 0.0000 0.0000 -------- 2 4.1995 0.0000 0.6000 -------- 3 0.0000 0.0000 0.0000 -------- 5 7.1453 0.0000 0.6400 -------- 10 9.1617 0.0000 0.6500 -------- 25 10.7179 0.0000 0.6400 -------- 50 13.7204 0.0000 0.6600 -------- 100 15.6922 0.0000 0.6700 -------- Intensity = B / (Tc + D)^E Return Intensity Values (in/hr) Period (Yrs) 5 min 10 15 20 25 30 35 40 45 50 55 60 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 1.60 1.05 0.83 0.70 0.61 0.55 0.50 0.46 0.43 0.40 0.38 0.36 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5 2.55 1.64 1.26 1.05 0.91 0.81 0.73 0.67 0.63 0.58 0.55 0.52 10 3.22 2.05 1.58 1.31 1.13 1.00 0.91 0.83 0.77 0.72 0.68 0.64 25 3.83 2.46 1.89 1.58 1.37 1.22 1.10 1.01 0.94 0.88 0.82 0.78 50 4.74 3.00 2.30 1.90 1.64 1.45 1.31 1.20 1.11 1.04 0.97 0.92 100 5.34 3.35 2.56 2.11 1.82 1.61 1.45 1.33 1.22 1.14 1.07 1.01 Tc = time in minutes. Min Tc = 0 APPENDIX C Subbasin Rational Method Calculations Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin A Hydrograph type = Rational Peak discharge (cfs) = 0.075 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.020 Runoff coeff. (C) = 0.98 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 22 (cuft); 0.001 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.01 0.01 0.02 0.02 0.03 0.03 0.04 0.04 0.05 0.05 0.06 0.06 0.07 0.07 0.08 0.08 0.09 0.09 0.10 0.10 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.07 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin B Hydrograph type = Rational Peak discharge (cfs) = 2.450 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.660 Runoff coeff. (C) = 0.97 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 735 (cuft); 0.017 (acft) 0 5 10 Q (cfs) 0.00 0.00 1.00 1.00 2.00 2.00 3.00 3.00 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 2.45 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin C Hydrograph type = Rational Peak discharge (cfs) = 0.306 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.090 Runoff coeff. (C) = 0.89 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 92 (cuft); 0.002 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.05 0.05 0.10 0.10 0.15 0.15 0.20 0.20 0.25 0.25 0.30 0.30 0.35 0.35 0.40 0.40 0.45 0.45 0.50 0.50 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.31 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin D Hydrograph type = Rational Peak discharge (cfs) = 0.562 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.150 Runoff coeff. (C) = 0.98 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 169 (cuft); 0.004 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.10 0.10 0.20 0.20 0.30 0.30 0.40 0.40 0.50 0.50 0.60 0.60 0.70 0.70 0.80 0.80 0.90 0.90 1.00 1.00 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.56 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin E Hydrograph type = Rational Peak discharge (cfs) = 0.482 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.130 Runoff coeff. (C) = 0.97 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 145 (cuft); 0.003 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.05 0.05 0.10 0.10 0.15 0.15 0.20 0.20 0.25 0.25 0.30 0.30 0.35 0.35 0.40 0.40 0.45 0.45 0.50 0.50 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.48 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin F Hydrograph type = Rational Peak discharge (cfs) = 0.900 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.240 Runoff coeff. (C) = 0.98 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 270 (cuft); 0.006 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.10 0.10 0.20 0.20 0.30 0.30 0.40 0.40 0.50 0.50 0.60 0.60 0.70 0.70 0.80 0.80 0.90 0.90 1.00 1.00 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.90 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin G Hydrograph type = Rational Peak discharge (cfs) = 0.238 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.070 Runoff coeff. (C) = 0.89 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 72 (cuft); 0.002 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.05 0.05 0.10 0.10 0.15 0.15 0.20 0.20 0.25 0.25 0.30 0.30 0.35 0.35 0.40 0.40 0.45 0.45 0.50 0.50 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.24 (cfs) Hydrology Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin H Hydrograph type = Rational Peak discharge (cfs) = 0.165 Storm frequency (yrs) = 25 Time interval (min) = 1 Drainage area (ac) = 0.050 Runoff coeff. (C) = 0.86 Rainfall Inten (in/hr) = 3.826 Tc by User (min) = 5 IDF Curve = COB IDF.IDF Rec limb factor = 1.00 Hydrograph Volume = 49 (cuft); 0.001 (acft) 0 5 10 Q (cfs) 0.00 0.00 0.05 0.05 0.10 0.10 0.15 0.15 0.20 0.20 0.25 0.25 0.30 0.30 0.35 0.35 0.40 0.40 0.45 0.45 0.50 0.50 Q (cfs) Time (min) Runoff Hydrograph 25-yr frequency Runoff Hyd - Qp = 0.16 (cfs) APPENDIX D Pipe Capacity Calculations Channel Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin B Inlet Leader Circular Diameter (ft) = 1.00 Invert Elev (ft) = 10.00 Slope (%) = 1.00 N-Value = 0.012 Calculations Compute by: Known Q Known Q (cfs) = 2.45 Highlighted Depth (ft) = 0.58 Q (cfs) = 2.450 Area (sqft) = 0.47 Velocity (ft/s) = 5.17 Wetted Perim (ft) = 1.73 Crit Depth, Yc (ft) = 0.67 Top Width (ft) = 0.99 EGL (ft) = 1.00 0 1 2 3 Elev (ft)Depth (ft)Section 9.50 -0.50 10.00 0.00 10.50 0.50 11.00 1.00 11.50 1.50 12.00 2.00 Reach (ft) Channel Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin D Inlet Leader Circular Diameter (ft) = 0.67 Invert Elev (ft) = 10.00 Slope (%) = 1.00 N-Value = 0.012 Calculations Compute by: Known Q Known Q (cfs) = 1.04 Highlighted Depth (ft) = 0.45 Q (cfs) = 1.040 Area (sqft) = 0.25 Velocity (ft/s) = 4.12 Wetted Perim (ft) = 1.29 Crit Depth, Yc (ft) = 0.49 Top Width (ft) = 0.63 EGL (ft) = 0.71 0 1 2 Elev (ft)Section 9.75 10.00 10.25 10.50 10.75 11.00 Reach (ft) Channel Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin E Inlet Leader Circular Diameter (ft) = 0.50 Invert Elev (ft) = 10.00 Slope (%) = 1.00 N-Value = 0.012 Calculations Compute by: Known Q Known Q (cfs) = 0.48 Highlighted Depth (ft) = 0.34 Q (cfs) = 0.480 Area (sqft) = 0.14 Velocity (ft/s) = 3.37 Wetted Perim (ft) = 0.97 Crit Depth, Yc (ft) = 0.36 Top Width (ft) = 0.47 EGL (ft) = 0.52 0 1 2 Elev (ft)Section 9.75 10.00 10.25 10.50 10.75 11.00 Reach (ft) Channel Report Hydraflow Express Extension for Autodesk® Civil 3D® by Autodesk, Inc.Thursday, Nov 18 2021 Subbasin F Inlet Leader Circular Diameter (ft) = 0.67 Invert Elev (ft) = 10.00 Slope (%) = 1.00 N-Value = 0.012 Calculations Compute by: Known Q Known Q (cfs) = 0.90 Highlighted Depth (ft) = 0.41 Q (cfs) = 0.900 Area (sqft) = 0.23 Velocity (ft/s) = 3.97 Wetted Perim (ft) = 1.21 Crit Depth, Yc (ft) = 0.45 Top Width (ft) = 0.65 EGL (ft) = 0.65 0 1 2 Elev (ft)Section 9.75 10.00 10.25 10.50 10.75 11.00 Reach (ft) APPENDIX E Stormtech Chamber Design Details User Inputs Chamber Model: SC-160LP Outlet Control Structure: Yes Project Name: NWX - Building (North) Engineer: Ben Berry Project Location: Montana Measurement Type: Imperial Required Storage Volume: 735 cubic ft. Stone Porosity: 40% Stone Foundation Depth: 6 in. Stone Above Chambers: 6 in. Average Cover Over Chambers: 14 in. Design Constraint Dimensions:(30 ft. x 56 ft.) Results System Volume and Bed Size Installed Storage Volume: 778.64 cubic ft. Storage Volume Per Chamber: 6.85 cubic ft. Number Of Chambers Required: 38 Number Of End Caps Required: 12 Chamber Rows: 6 Maximum Length:55.74 ft. Maximum Width: 15.10 ft. Approx. Bed Size Required: 778.07 square ft. System Components Amount Of Stone Required: 47.99 cubic yards Volume Of Excavation (Not Including Fill): 57.64 cubic yards Non-woven Geotextile Required (ex- cluding Isolator Row): 245.27 square yards Non-woven Geotextile Required (Iso- lator Row): 0 square yards Total Non-woven Geotextile Required:245.27 square yards Woven Geotextile Required (excluding Isolator Row): 20 square yards Woven Geotextile Required (Isolator Row): 26.82 square yards Total Woven Geotextile Required:46.82 square yards User Inputs Chamber Model: SC-160LP Outlet Control Structure: Yes Project Name: NWX - Building (South) Engineer: Ben Berry Project Location: Montana Measurement Type: Imperial Required Storage Volume: 584 cubic ft. Stone Porosity: 40% Stone Foundation Depth: 6 in. Stone Above Chambers: 6 in. Average Cover Over Chambers: 14 in. Design Constraint Dimensions:(30 ft. x 50 ft.) Results System Volume and Bed Size Installed Storage Volume: 629.61 cubic ft. Storage Volume Per Chamber: 6.85 cubic ft. Number Of Chambers Required: 30 Number Of End Caps Required: 10 Chamber Rows: 5 Maximum Length:48.62 ft. Maximum Width: 13.02 ft. Approx. Bed Size Required: 632.89 square ft. System Components Amount Of Stone Required: 39.27 cubic yards Volume Of Excavation (Not Including Fill): 46.88 cubic yards Non-woven Geotextile Required (ex- cluding Isolator Row): 201.64 square yards Non-woven Geotextile Required (Iso- lator Row): 0 square yards Total Non-woven Geotextile Required:201.64 square yards Woven Geotextile Required (excluding Isolator Row): 15 square yards Woven Geotextile Required (Isolator Row): 23.02 square yards Total Woven Geotextile Required:38.02 square yards APPENDIX F Stormtech SC-160LP Details and Maintenance Guide STORMTECH SC-160LP CHAMBER (not to scale) Nominal Chamber Specifications Size (L x W x H) 85.4” x 25” x 12” 2,170 mm x 635 mm x 305 mm Chamber Storage 6.85 ft3 (.19 m3) Min. Installed Storage* 15.0 ft3 (0.42 m3) Weight 24.0 lbs (10.9 kg) Shipping 132 chambers/pallet 144 end caps/pallet 12 pallets/truck *Assumes 6” (150 mm) stone above, 4” (100 mm) below and stone between chambers with 40% stone porosity. 14"(350 mm)MIN* 10'(3.0 m)MAX 6" (150 mm)MIN 12" (300 mm) MIN 25"(635 mm)12" (300 mm)TYP DEPTH OF STONE TO BE DETERMINEDBY SITE DESIGN ENGINEER 4" (100 mm) MINWITH GEOGRID BX124GG 12"(300 mm) *MINIMUM COVER TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED INSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR, INCREASE COVER TO 20" (510 mm). SC-160LPEND CAP NO SPACING REQUIREDBETWEEN CHAMBERS SINGLE LAYER OF GEOGRID BX124GG TO BE INSTALLEDBETWEEN NON WOVEN GEOTEXTILE AND BASE STONE PERIMETER STONE EXCAVATION WALL(CAN BE SLOPEDOR VERTICAL) SITE DESIGN ENGINEER IS RESPONSIBLE FORTHE ENSURING THE REQUIRED BEARINGCAPACITY OF SUBGRADE SOILS PAVEMENT LAYER (DESIGNEDBY SITE DESIGN ENGINEER) CHAMBERS SHALL BE BE DESIGNED IN ACCORDANCE WITH ASTM F2787"STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTICCORRUGATED WALL STORMWATER COLLECTION CHAMBERS". GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35%FINES, COMPACT IN 6" (150 mm) MAX LIFTS TO 95% PROCTORDENSITY. SEE THE TABLE OF ACCEPTABLE FILL MATERIALS. ADS GEOSYTHETICS 601T NON-WOVENGEOTEXTILE ALL AROUND CLEAN, CRUSHED,ANGULAR EMBEDMENT STONE CHAMBERS SHALL MEET THE REQUIREMENTS FORASTM F2418 POLYPROPLENE (PP) CHAMBERSOR ASTM F922 POLYETHYLENE (PE) CHAMBERS EMBEDMENT STONE SHALL BE A CLEAN, CRUSHED AND ANGULARSTONE WITH AN AASHTO M43 DESIGNATION BETWEEN #3 AND #57 STORMTECH SC-160LP CHAMBER Designed to meet the most stringent industry performance standards for superior structural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots, thus maximizing land usage for commercial and municipal applications. StormTech chambers can also be used in conjunction with Green Infrastructure, thus enhancing the performance and extending the service life of these practices. The SC-160LP chamber was developed for infiltration and detention in shallow cover applications • Only 14” (350 mm) required from top of chamber to bottom of pavement • Only 12” (300 mm) tall THE MOST ADVANCED NAME IN WATER MANAGEMENT SOLUTIONS TM Advanced Drainage Systems, Inc. 4640 Trueman Blvd., Hilliard, OH 43026 1-800-821-6710 www.ads-pipe.com For more information on the StormTech SC-160LP Chamber and other ADS products, please contact our Customer Service Representatives at 1-800-821-6710 ADS “Terms and Conditions of Sale” are available on the ADS website, www.ads-pipe.com The ADS logo and the Green Stripe are registered trademarks of Advanced Drainage Systems, Inc. StormTech® is a registered trademark of StormTech, Inc. © 2017 Advanced Drainage Systems, Inc. #10992 09/17 CS SC-160LP CUMULATIVE STORAGE VOLUMES PER CHAMBER Assumes 40% Stone Porosity. Calculations are Based Upon a 4” (100 mm) Stone Base Under Chambers. Note: Add 0.49 ft3 (0.014 m3) of storage for each additional inch (25 mm) of stone foundation. Depth of Water in System Inches (mm)Cumulative Chamber Storage ft3 (m3)Total System Cumulative Storage ft3 (m3) 22 (559)6.85 (0.194)14.98 (0.424) 21 (533)6.85 (0.194)14.49 (0.410) 20 (508)6.85 (0.194)14.00 (0.396) 19 (483)6.85 (0.194)13.50 (0.382) 18 (457)6.85 (0.194)13.01 (0.368) 17 (432)6.85 (0.194)12.51 (0.354) 16 (406)6.85 (0.194)12.02 (0.340) 15 (381)6.80 (0.193)11.49 (0.325) 14 (356)6.67 (0.189)10.92 (0.309) 13 (330)6.38 (0.181)10.25 (0.290) 12 (305)5.94 (0.168)9.49 (0.269) 11 (279)5.40 (0.153)8.67 (0.246) 10 (254)4.78 (0.135)7.81 (0.221) 9 (229)4.10 (0.116)6.91 (0.196) 8 (203)3.36 (0.095)5.97 (0.169) 7 (178)2.58 (0.073)5.01 (0.142) 6 (152)1.76 (0.050)4.02 (0.114) 5 (127)0.89 (0.025)3.01 (0.085) 4 (102)0 (0)1.98 (0.056) 3 (76)0 (0)1.48 (0.042) 2 (51)0 (0)0.99 (0.028) 1 (25)0 (0)0.49 (0.014) Stone Foundation Stone Cover ENGLISH TONS (yds3)Stone Foundation Depth 4”6”8” StormTech SC-3160LP 1.1 (0.8)1.2 (0.9)1.3 (0.9) METRIC KILOGRAMS (m3)100 mm 150 mm 200 mm StormTech SC-3160LP 952 (0.7)1,074 (0.8)1,197 (0.8) Note: Assumes 6” (150 mm) of stone above and only embedment stone between chambers. AMOUNT OF STONE PER CHAMBER Stone Foundation Depth 4” (100)8” (200)12” (300) StormTech SC-160LP 1.4 (1.1)1.6 (1.2)1.8 (1.3) Note: Assumes no row separation and 14” (350 mm) of cover. The volume of excavation will vary as depth of cover increases. VOLUME EXCAVATION PER CHAMBER YD3 (M3) TOOLDESIGN Working on a project? Visit us at www.stormtech.com and utilize the StormTech Design Tool SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R1 105-10-19KRKRSTANDARD CROSS SECTIONSC-160LPDATEDRWNCHKDDESCRIPTIONMATERIAL LOCATION DESCRIPTION AASHTO MATERIAL CLASSIFICATIONS COMPACTION / DENSITY REQUIREMENT D FINAL FILL: FILL MATERIAL FOR LAYER 'D' STARTS FROM THE TOP OF THE 'C' LAYER TO THE BOTTOM OF FLEXIBLE PAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THAT PAVEMENT SUBBASE MAY BE PART OF THE 'D' LAYER ANY SOIL/ROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS. CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS.N/A PREPARE PER SITE DESIGN ENGINEER'S PLANS. PAVED INSTALLATIONS MAY HAVE STRINGENT MATERIAL AND PREPARATION REQUIREMENTS. C INITIAL FILL: FILL MATERIAL FOR LAYER 'C' STARTS FROM THE TOP OF THE EMBEDMENT STONE ('B' LAYER) TO 14" (355 mm) ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT SUBBASE MAY BE A PART OF THE 'C' LAYER. GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35% FINES OR PROCESSED AGGREGATE. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS LAYER. AASHTO M145¹ A-1, A-2-4, A-3 OR AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 BEGIN COMPACTIONS AFTER 12" (300 mm) OF MATERIAL OVER THE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN 6" (150 mm) MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FOR WELL GRADED MATERIAL AND 95% RELATIVE DENSITY FOR PROCESSED AGGREGATE MATERIALS. ROLLER GROSS VEHICLE WEIGHT NOT TO EXCEED 12,000 lbs (53 kN). DYNAMIC FORCE NOT TO EXCEED 20,000 lbs (89 kN). B EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS FROM THE FOUNDATION STONE ('A' LAYER) TO THE 'C' LAYER ABOVE.CLEAN, CRUSHED, ANGULAR STONE AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57 NO COMPACTION REQUIRED. A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER.CLEAN, CRUSHED, ANGULAR STONE AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57 PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE.2,3 PLEASE NOTE: 1.THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: "CLEAN, CRUSHED, ANGULAR NO. 4 (AASHTO M43) STONE". 2.STORMTECH COMPACTION REQUIREMENTS ARE MET FOR 'A' LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 6" (150 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR. 3.WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LOAD DESIGNS, CONTACT STORMTECH FOR COMPACTION REQUIREMENTS. 4.ONCE LAYER 'C' IS PLACED, ANY SOIL/MATERIAL CAN BE PLACED IN LAYER 'D' UP TO THE FINISHED GRADE. MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER 'C' OR 'D' AT THE SITE DESIGN ENGINEER'S DISCRETION. ACCEPTABLE FILL MATERIALS: STORMTECH SC-160LP CHAMBER SYSTEMS NOTES: 1.CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418-16a, "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 2.CHAMBERS SHALL BE DESIGNED, TESTED AND ALLOWABLE LOAD CONFIGURATIONS DETERMINED IN ACCORDANCE WITH ASTM F2787, "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". LOAD CONFIGURATIONS SHALL INCLUDE: 1) INSTANTANEOUS (<1 MIN) AASHTO DESIGN TRUCK LIVE LOAD ON MINIMUM COVER 2) MAXIMUM PERMANENT (75-YR) COVER LOAD AND 3) ALLOWABLE COVER WITH PARKED (1-WEEK) AASHTO DESIGN TRUCK. 3.THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. 4.PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 5.REQUIREMENTS FOR HANDLING AND INSTALLATION: ·TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS ·TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 1.5” ·TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION, a) THE ARCH STIFFNESS CONSTANT AS DEFINED IN SECTION 6.2.8 OF ASTM F2418 SHALL BE GREATER THAN OR EQUAL TO 400 LBS/IN/IN. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73° F / 23° C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. D C B *TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVED INSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR, INCREASE COVER TO 20" (510 mm).14" (350 mm) MIN* 10' (3.0 m) MAX 6" (150 mm) MIN 12" (300 mm) MIN 25" (635 mm) 12" (300 mm) MIN DEPTH OF BASE STONE TO BE DETERMINED BY SITE DESIGN ENGINEER 6" (150 mm) MINA 12" (305 mm) EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) PERIMETER STONE (SEE NOTE 4) SC-160LP END CAP SUBGRADE SOILS (SEE NOTE 3) NO SPACING REQUIRED BETWEEN CHAMBERS PAVEMENT LAYER (DESIGNED BY SITE DESIGN ENGINEER) ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEAN CRUSHED, ANGULAR STONE IN A & B LAYERS 70 INWOOD ROAD, SUITE 3 | ROCKY HILL | CT | 06067860-529-8188 |888-892-2694 | WWW.STORMTECH.COMDetention Retention Water Quality SHEET OFDATE:PROJECT #:DRAWN:CHECKED:THIS DRAWING HAS BEEN PREPARED BASED ON INFORMATION PROVIDED TO ADS UNDER THE DIRECTION OF THE SITE DESIGN ENGINEER OR OTHER PROJECT REPRESENTATIVE. THE SITE DESIGN ENGINEER SHALL REVIEW THIS DRAWING PRIOR TO CONSTRUCTION. IT IS THE ULTIMATERESPONSIBILITY OF THE SITE DESIGN ENGINEER TO ENSURE THAT THE PRODUCT(S) DEPICTED AND ALL ASSOCIATED DETAILS MEET ALL APPLICABLE LAWS, REGULATIONS, AND PROJECT REQUIREMENTS.4640 TRUEMAN BLVDHILLIARD, OH 43026ADVANCED DRAINAGE SYSTEMS, INC.R1 108/26/20----ALIALIISOLATOR ROW PLUS DETAILSSC-160DATEDRWNCHKDDESCRIPTIONNOTE: INSPECTION PORTS MAY BE CONNECTED THROUGH ANY CHAMBER CORRUGATION CREST. STORMTECH CHAMBER CONCRETE COLLAR PAVEMENT 12" (300 mm) MIN WIDTH CONCRETE SLAB 6" (150 mm) MIN THICKNESS 4" PVC INSPECTION PORT DETAIL (SC SERIES CHAMBER) NTS 8" NYLOPLAST INSPECTION PORT BODY (PART# 2708AG4IPKIT) OR TRAFFIC RATED BOX W/SOLID LOCKING COVER CONCRETE COLLAR NOT REQUIRED FOR UNPAVED APPLICATIONS 4" (100 mm) SDR 35 PIPE 4" (100 mm) INSERTA TEE TO BE CENTERED ON CORRUGATION CREST 520 CROMWELL AVENUE | ROCKY HILL | CT | 06067860-529-8188 |888-892-2694 | WWW.STORMTECH.COMDetention Retention Water QualityINSPECTION & MAINTENANCE STEP 1)INSPECT ISOLATOR ROW PLUS FOR SEDIMENT A.INSPECTION PORTS (IF PRESENT) A.1.REMOVE/OPEN LID ON NYLOPLAST INLINE DRAIN A.2.REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3.USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG A.4.LOWER A CAMERA INTO ISOLATOR ROW PLUS FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) A.5.IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B.ALL ISOLATOR PLUS ROWS B.1.REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW PLUS B.2.USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW PLUS THROUGH OUTLET PIPE i)MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY ii)FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE B.3.IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. STEP 2)CLEAN OUT ISOLATOR ROW PLUS USING THE JETVAC PROCESS A.A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" (1.1 m) OR MORE IS PREFERRED B.APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN C.VACUUM STRUCTURE SUMP AS REQUIRED STEP 3)REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4)INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. NOTES 1.INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2.CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. SUMP DEPTH TBD BY SITE DESIGN ENGINEER (24" [600 mm] MIN RECOMMENDED) SC-160LP ISOLATOR ROW PLUS DETAIL NTS CATCH BASIN OR MANHOLE STORMTECH HIGHLY RECOMMENDS FLEXSTORM INSERTS IN ANY UPSTREAM STRUCTURES WITH OPEN GRATES SC-160LP CHAMBER 8" (200 mm) HDPE ACCESS PIPE REQUIRED USE 8" OPEN END CAP PART #: SC160IEPP08 OPTIONAL INSPECTION PORT SC-160LP END CAP ONE LAYER OF ADSPLUS125 WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS 4' (1.2 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS WEIR WEIR HEIGHT TBD BY SITE DESIGN ENGINEER THE MOST ADVANCED NAME IN WATER MANAGEMENT SOLUTIONS ® Isolator ® Row PLUS O&M Manual An company SC-740 FLAMP MC-3500 2 THE MOST ADVANCED NAME IN WATER MANAGEMENT SOLUTIONS ® Looking down the Isolator Row PLUS from the manhole opening, ADS PLUS Fabric is shown between the chamber and stone base. StormTech Isolator Row PLUS with Overflow Spillway (not to scale) THE ISOLATOR® ROW PLUS INTRODUCTION An important component of any Stormwater Pollution Prevention Plan is inspection and maintenance. The StormTech Isolator Row PLUS is a technique to inexpensively enhance Total Suspended Solids (TSS) and Total Phosphorus (TP) removal with easy access for inspection and maintenance. THE ISOLATOR ROW PLUS The Isolator Row PLUS is a row of StormTech chambers, either SC-160, SC-310, SC-310-3, SC-740, DC-780, MC-3500 or MC-4500 models, that is surrounded with filter fabric and connected to a closely located manhole for easy access. The fabric-wrapped chambers provide for settling and filtration of sediment as storm water rises in the Isolator Row PLUS and ultimately passes through the filter fabric. The open bottom chambers and perforated sidewalls (SC-310, SC- 310-3 and SC-740 models) allow storm water to flow both vertically and horizontally out of the chambers. Sediments are captured in the Isolator Row PLUS protecting the storage areas of the adjacent stone and chambers from sediment accumulation. ADS geotextile fabric is placed between the stone and the Isolator Row PLUS chambers. The woven geotextile provides a media for stormwater filtration, a durable surface for maintenance, prevents scour of the underlying stone and remains intact during high pressure jetting. A non- woven fabric is placed over the chambers to provide a filter media for flows passing through the perforations in the sidewall of the chamber. The non- woven fabric is not required over the SC-160, DC-780, MC-3500 or MC- 4500 models as these chambers do not have perforated side walls. The Isolator Row PLUS is designed to capture the “first flush” runoff and offers the versatility to be sized on a volume basis or a flow-rate basis. An upstream manhole not only provides access to the Isolator Row PLUS but includes a high/low concept such that stormwater flow rates or volumes that exceed the capacity of the Isolator Row PLUS bypass through a manifold to the other chambers. This is achieved with either an elevated bypass manifold or a high-flow weir. This creates a differential between the Isolator Row PLUS row of chambers and the manifold to the rest of the system, thus allowing for settlement time in the Isolator Row PLUS. After Stormwater flows through the Isolator Row PLUS and into the rest of the StormTech chamber system it is either exfiltrated into the soils below or passed at a controlled rate through an outlet manifold and outlet control structure. The Isolator Row FLAMPTM (patent pending) is a flared end ramp apparatus that is attached to the inlet pipe on the inside of the chamber end cap. The FLAMP provides a smooth transition from pipe invert to fabric bottom. It is configured to improve chamber function performance over time by enhancing outflow of solid debris that would otherwise collect at an end of the chamber. It also serves to improve the fluid and solid flow into the access pipe during maintenance and cleaning and to guide cleaning and inspection equipment back into the inlet pipe when complete. The Isolator Row PLUS may be part of a treatment train system. The design of the treatment train and selection of pretreatment devices by the design engineer is often driven by regulatory requirements. Whether pretreatment is used or not, the Isolator Row PLUS is recommended by StormTech as an effective means to minimize maintenance requirements and maintenance costs. Note: See the StormTech Design Manual for detailed information on designing inlets for a StormTech system, including the Isolator Row PLUS. INSPECTION The frequency of inspection and maintenance varies by location. A routine inspection schedule needs to be established for each individual location based upon site specific variables. The type of land use (i.e. industrial, commercial, residential), anticipated pollutant load, percent imperviousness, climate, etc. all play a critical role in determining the actual frequency of inspection and maintenance practices. At a minimum, StormTech recommends annual inspections. Initially, the Isolator Row PLUS should be inspected every 6 months for the first year of operation. For subsequent years, the inspection should be adjusted based upon previous observation of sediment deposition. The Isolator Row PLUS incorporates a combination of standard manhole(s) and strategically located inspection ports (as needed). The inspection ports allow for easy access to the system from the surface, eliminating the need to perform a confined space entry for inspection purposes. If upon visual inspection it is found that sediment has accumulated, a stadia rod should be inserted to determine the depth of sediment. When the average depth of sediment exceeds 3 inches throughout the length of the Isolator Row PLUS, clean-out should be performed. MAINTENANCE The Isolator Row PLUS was designed to reduce the cost of periodic maintenance. By “isolating” sediments to just one row, costs are dramatically reduced by eliminating the need to clean out each row of the entire storage bed. If inspection indicates the potential need for maintenance, access is provided via a manhole(s) located on the end(s) of the row for cleanout. If entry into the manhole is required, please follow local and OSHA rules for a confined space entries. Maintenance is accomplished with the JetVac process. The JetVac process utilizes a high pressure water nozzle to propel itself down the Isolator Row PLUS while scouring and suspending sediments. As the nozzle is retrieved, the captured pollutants are flushed back into the manhole for vacuuming. Most sewer and pipe maintenance companies have vacuum/JetVac combination vehicles. Selection of an appropriate JetVac nozzle will improve maintenance efficiency. Fixed nozzles designed for culverts or large diameter pipe cleaning are preferable. Rear facing jets with an effective spread of at least 45” are best. StormTech recommends a maximum nozzle pressure of 2000 psi be utilized during cleaning. Most JetVac reels have 400 feet of hose allowing maintenance of an Isolator Row PLUS up to 50 chambers long. The JetVac process shall only be performed on StormTech Isolator Row PLUS that have ADS PLUS Fabric (as specified by StormTech) over their angular base stone. StormTech Isolator Row PLUS (not to scale) ISOLATOR ROW PLUS INSPECTION/MAINTENANCE Note: Non-woven fabric is only required over the inlet pipe connection into the end cap for SC-160LP, DC-780, MC-3500 and MC-4500 chamber models and is not required over the entire Isolator Row PLUS. ISOLATOR ROW PLUS STEP BY STEP MAINTENANCE PROCEDURES STEP 1Inspect Isolator Row PLUS for sediment. A) Inspection ports (if present) i. Remove lid from floor box frame ii. Remove cap from inspection riser iii. Using a flashlight and stadia rod,measure depth of sediment and record results on maintenance log. iv. If sediment is at or above 3 inch depth, proceed to Step 2. If not, proceed to Step 3. B) All Isolator Row PLUS i. Remove cover from manhole at upstream end of Isolator Row PLUS ii. Using a flashlight, inspect down Isolator Row PLUS through outlet pipe 1. Mirrors on poles or cameras may be used to avoid a confined space entry 2. Follow OSHA regulations for confined space entry if entering manhole iii. If sediment is at or above the lower row of sidewall holes (approximately 3 inches), proceed to Step 2. If not, proceed to Step 3. STEP 2Clean out Isolator Row PLUS using the JetVac process. A) A fixed floor cleaning nozzle with rear facing nozzle spread of 45 inches or more is preferable B) Apply multiple passes of JetVac until backflush water is clean C) Vacuum manhole sump as required STEP 3 Replace all caps, lids and covers, record observations and actions. STEP 4Inspect & clean catch basins and manholes upstream of the StormTech system. ADS “Terms and Conditions of Sale” are available on the ADS website, www.ads-pipe.com The ADS logo and the Green Stripe are registered trademarks of Advanced Drainage Systems, Inc. Stormtech® and the Isolator® Row are registered trademarks of StormTech, Inc. © 2020 Advanced Drainage Systems, Inc. #11081 07/20 CS An company Advanced Drainage Systems, Inc. 4640 Trueman Blvd., Hilliard, OH 43026 1-800-821-6710 www.ads-pipe.com )( SAMPLE MAINTENANCE LOG Date Stadia Rod Readings Sediment Depth (1)–(2)Observations/Actions InspectorFixed point to chamber bottom (1)Fixed point to top of sediment (2) 3/15/11 6.3 ft none New installation. Fixed point is CI frame at grade DJM 9/24/11 6.2 0.1 ft Some grit felt SM 6/20/13 5.8 0.5 ft Mucky feel, debris visible in manhole and in Isolator Row PLUS, maintenance due NV 7/7/13 6.3 ft 0 System jetted and vacuumed DJM StormTech Construction Guide An company REQUIRED MATERIALS AND EQUIPMENT LIST ~0RRT_cPQ[T [[\PcTaXP[b_TaCPQ[T ~F^eT]P]S]^]f^eT]VT^cTgcX[Tb ~Bc^a\CTRWb^[XST]SRP_bP]S_aTR^aTST]SRP_b ~Bc^a\CTRWRWP\QTab ~Bc^a\CTRW\P]XU^[SbP]S ccX]Vb IMPORTANT NOTES: A. This installation guide provides the minimum requirements for proper installation of chambers. Non-adherence to this guide may result in damage to chambers during installation. Replacement of damaged chambers during or after backfilling is costly and very time consuming. It is recommended that all installers are familiar with this guide, and that the contractor inspects the chambers for distortion, damage and joint integrity as work progresses. B. Care should be taken in the handling of chambers and end caps. Avoid dropping, prying or excessive force on chambers during removal from pallet and initial placement. Requirements for System Installation Excavate bed and prepare subgrade perengineer’s plans.Place non-woven geotextile over prepared soilsand up excavation walls. Install underdrains ifrequired. Place clean, crushed, angular stone foundation6” (150 mm) or 4” (100 mm) with a single layer of Geogrid BX124GG. See plans for foundation stone design.Compact to achieve a ﬂat surface.SC-160LP1 Backfill - Embedment Stone & Cover Stone Final Backfill of Chambers – Fill Material Final Backfill of Chambers – Fill Material StormTech Isolator Row Detail Continue evenly backﬁlling between rows and around perimeter until embedment stone reaches tops of chambers. Perimeter stone must extend horizontally to the excavation wall for both straight or sloped sidewalls. Install non-woven geotextile over stone. Geotextile must overlap 24” (600 mm) Small dozers and skid loaders may be used to ﬁnish grading stone backﬁll in accordance with ground pressure limits in Table 2. They must push material parallel to rows only. Never push perpendicular to rows. StormTech recommends that the contractor inspect chambers before placing ﬁnal backﬁll. Any chambers damaged by construction shall be removed and replaced. SUMP DEPTH BY SITEDESIGN ENGINEER 8" (200 mm) HDPE ACCESS PIPEREQUIRED USE 8" OPEN END CAPPART #: SC160IEPP08 TWO LAYERS OF ADS GEOSYNTHETICS 315WTK WOVENGEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS4' (1.2 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS SC-160LP CHAMBER CATCH BASINORMANHOLE Manifold, Scour Fabric and Chamber Assembly Install manifolds and lay out woven scourgeotextile at inlet rows [min. 12.5 ft (3.8 m)] ateach inlet end cap. Place a continuous piece(no seams, double layer) along entire length ofIsolator® Row(s). Align the ﬁrst chamber and end cap of eachrow with inlet pipes. Contractor may choose topostpone stone placement around end chambersand leave ends of rows open for easy inspectionof chambers during the backﬁll process. Continue installing chambers by overlapping chamber end corrugations. Chamber joints are labeled “Lower Joint – Overlap Here” and “Build this direction – Upper Joint” Be sure that the chamber placement does not exceed the reach of the construction equipment used to place the stone. No spacing is required between chambers. Attaching the End Caps Prefabricated End Caps Isolator Row Lift the end of the chamber a few inches off the ground. With the curved face of the end cap facing outward, place the end cap into the chamber’s end corrugation. SC-160LP end caps can accept 8”(200mm) or 6”(150mm) manifold inlets. End caps can be ordered as an 8”(200mm) open hole or can be cored in the ﬁeld. Place two continuous layers of ADS Woven fabric between the foundation stone and the isolator row chambers, making sure the fabric lays ﬂat and extends the entire width of the chamber feet. 2 Manifold, Scour Fabric and Chamber Assembly Install manifolds and lay out woven scourgeotextile at inlet rows [min. 12.5 ft (3.8 m)] ateach inlet end cap. Place a continuous piece(no seams, double layer) along entire length ofIsolator® Row(s). Align the ﬁrst chamber and end cap of eachrow with inlet pipes. Contractor may choose topostpone stone placement around end chambersand leave ends of rows open for easy inspectionof chambers during the backﬁll process. Continue installing chambers by overlapping chamber end corrugations. Chamber joints are labeled “Lower Joint – Overlap Here” and “Build this direction – Upper Joint” Be sure that the chamber placement does not exceed the reach of the construction equipment used to place the stone. No spacing is required between chambers. Attaching the End Caps Prefabricated End Caps Isolator Row Lift the end of the chamber a few inches off the ground. With the curved face of the end cap facing outward, place the end cap into the chamber’s end corrugation. SC-160LP end caps can accept 8”(200mm) or 6”(150mm) manifold inlets. End caps can be ordered as an 8”(200mm) open hole or can be cored in the ﬁeld. Place two continuous layers of ADS Woven fabric between the foundation stone and the isolator row chambers, making sure the fabric lays ﬂat and extends the entire width of the chamber feet. 2 Material Location Description AASHTO M43 Designation1 Compaction/Density Requirement D Final Fill: Fill Material for layer ‘D’ starts from the top of the ‘C’ layer to the bottom of ﬂexible pavement or unpaved ﬁnished grade above. Note that the pave-ment subbase may be part of the ‘D’ layer. Any soil/rock materials, native soils or per engineer’s plans. Check plans for pavement subgrade requirements. N/A Prepare per site design engineer’s plans. Paved installations may have stringent material and prepara-tion requirements. C Initial Fill: Fill Material for layer ‘C’ starts from the top of the embedment stone (‘B’ layer) to 18” (450 mm) above the top of the chamber. Note that pave-ment subbase may be part of the ‘C’ layer. Granular well-graded soil/aggregate mixtures, <35% ﬁnes or processed aggregate. Most pavement subbase materials can be used in lieu of this layer. AASHTO M45A-1, A-2-4, A-3orAASHTO M431 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 Begin compaction after min. 12” (300 mm) of mate-rial over the chambers is reached. Compact additional layers in 6” (150 mm) max. lifts to a min. 95% Proctor density for well-graded material and 95% relative density for processed aggregate materials. Roller gross vehicle weight not to exceed 12,000 lbs (53 kN). Dynamic force not to exceed 20,000 lbs (89 kN) B Embedment Stone: Embedment Stone surrounding chambers from the foundation stone to the ‘C’ layer above. Clean, crushed, angular stone AASHTO M431 3, 357, 4, 467, 5, 56, 57 No compaction required. A Foundation Stone: Foundation Stone below the chambers from the subgrade up to the foot (bottom) of the chamber. Clean, crushed, angular stone,AASHTO M431 3, 357, 4, 467, 5, 56, 57 Place and compact in 6” (150 mm) lifts using two full coverages with a vibratory compactor.2, 3 Table 1- Acceptable Fill Materials Figure 1- Inspection Port Detail PLEASE NOTE: 1. The listed AASHTO designations are for gradations only. The stone must also be clean, crushed, angular. For example, a speciﬁcation for #4 stone would state: “clean, crushed, angular no. 4 (AASHTO M43) stone”. 2. StormTech compaction requirements are met for ‘A’ location materials when placed and compacted in 6” (150 mm) (max) lifts using two full coverages with a vibratory compactor. 3. Where inﬁltration surfaces may be comprised by compaction, for standard installations and standard design load conditions, a ﬂat surface may be achieved by raking or dragging without compaction equipment. For special load designs, contact StormTech for compaction requirements. Figure 2 - Fill Material Locations D C B *TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVEDINSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR,INCREASE COVER TO 20" (510 mm). PAVEMENT LAYER (DESIGNED BYSITE DESIGN ENGINEER) SC-160LP PERIMETER STONE 14"(350 mm)MIN* 10'(3.0 m)MAX 6" (150 mm)MIN EXCAVATION WALL(CAN BE SLOPED OR VERTICAL) 12" (300 mm) MIN ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEANCRUSHED, ANGULAR STONE IN A & B LAYERS NO SPACING REQUIRED 25"(635 mm)12" (300 mm)MIN A DEPTH OF STONE TO BE DETERMINEDBY SITE DESIGN ENGINEER4" (100 mm) MIN WITH GEOGRID BX124GG6" (150 mm) MIN WITHOUT GEOGRID 12"(300 mm) Install non-woven geotextile over stone. Geotextile must overlap 24” (600 mm) min. where edges meet. Compact each lift of backﬁll as speciﬁed in the site design engineer’s drawings. Roller to travel parallel with rows. 4 CONCRETE COLLAR PAVEMENT SC-160LP CHAMBER FLEXSTORM CATCH ITPART# 6212NYFXWITH USE OF OPEN GRATE 6" (150 mm) INSERTA TEEPART# 6P26FBSTIP*INSERTA TEE TO BE CENTEREDON CORRUGATION CREST 6" (150 mm) SDR35 PIPE 12" (300 mm) NYLOPLAST INLINEDRAIN BODY W/SOLID HINGEDCOVER OR GRATEPART# 2712AG6IP*SOLID COVER: 1299CGC*GRATE: 1299CGS 18" (450 mm) MIN WIDTH CONCRETE SLAB8" (200 mm) MIN THICKNESS CONCRETE COLLARNOT REQUIRED FORUNPAVED APPLICATION * THE PART# 2712AG6IPKIT CAN BEUSED TO ORDER ALL NECESSARYCOMPONENTS FOR A SOLID LIDINSPECTION PORT INSTALLATION Initial Anchoring of Chambers – Embedment Stone Backfill of Chambers – Embedment Stone UNEVEN BACKFILL Initial embedment shall be spotted along the centerline of the chamber evenly anchoring the lower portion of the chamber. This is best accomplished with a stone conveyor or excavator reaching along the row. Backﬁll chambers evenly. Stone column height should never differ by more than 12” (300 mm) between adjacent chamber rows or between chamber rows and perimeter. EVEN BACKFILL Care should be taken when backﬁlling not to damage the chambers. Please refer to the allowable construction vehicle loads on page 6. Perimeter stone must be brought up evenly with chamber rows. Perimeter must be fully backﬁlled, with stone extended horizontally to the excavation wall. PERIMETER NOT BACKFILLED PERIMETER FULLY BACKFILLED Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 3 12" (300 mm) MAX. Initial Anchoring of Chambers – Embedment Stone Install manifolds and lay out woven scourgeotextile at inlet rows [min. 12.5 ft (3.8 m)] ateach inlet end cap. Place a continuous piece(no seams, double layer) along entire length ofIsolator® Row(s). Align the ﬁrst chamber and end cap of eachrow with inlet pipes. Contractor may choose topostpone stone placement around end chambersand leave ends of rows open for easy inspectionof chambers during the backﬁll process. Continue installing chambers by overlapping chamber end corrugations. Chamber joints are labeled “Lower Joint – Overlap Here” and “Build this direction – Upper Joint” Be sure that the chamber placement does not exceed the reach of the construction equipment used to place the stone. No spacing is required between chambers. Attaching the End Caps Prefabricated End Caps Isolator Row Lift the end of the chamber a few inches off the ground. With the curved face of the end cap facing outward, place the end cap into the chamber’s end corrugation. SC-160LP end caps can accept 8”(200mm) or 6”(150mm) manifold inlets. End caps can be ordered as an 8”(200mm) open hole or can be cored in the ﬁeld. Place two continuous layers of ADS Woven fabric between the foundation stone and the isolator row chambers, making sure the fabric lays ﬂat and extends the entire width of the chamber feet. 2 Backfill - Embedment Stone & Cover Stone Final Backfill of Chambers – Fill Material Final Backfill of Chambers – Fill Material StormTech Isolator Row Detail Continue evenly backﬁlling between rows and around perimeter until embedment stone reaches tops of chambers. Perimeter stone must extend horizontally to the excavation wall for both straight or sloped sidewalls. Install non-woven geotextile over stone. Geotextile must overlap 24” (600 mm) min. where edges meet. Compact each lift of backﬁll as speciﬁed in the site design engineer’s drawings. Roller to travel parallel with rows. Small dozers and skid loaders may be used to ﬁnish grading stone backﬁll in accordance with ground pressure limits in Table 2. They must push material parallel to rows only. Never push perpendicular to rows. StormTech recommends that the contractor inspect chambers before placing ﬁnal backﬁll. Any chambers damaged by construction shall be removed and replaced. 4 SUMP DEPTH BY SITEDESIGN ENGINEER 8" (200 mm) HDPE ACCESS PIPEREQUIRED USE 8" OPEN END CAPPART #: SC160IEPP08 TWO LAYERS OF ADS GEOSYNTHETICS 315WTK WOVENGEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS4' (1.2 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS SC-160LP CHAMBER CATCH BASINORMANHOLE Material Location Description AASHTO M43 Designation1 Compaction/Density Requirement D Final Fill: Fill Material for layer ‘D’ starts from the top of the ‘C’ layer to the bottom of ﬂexible pavement or unpaved ﬁnished grade above. Note that the pave-ment subbase may be part of the ‘D’ layer. Any soil/rock materials, native soils or per engineer’s plans. Check plans for pavement subgrade requirements. N/A Prepare per site design engineer’s plans. Paved installations may have stringent material and prepara-tion requirements. C Initial Fill: Fill Material for layer ‘C’ starts from the top of the embedment stone (‘B’ layer) to 18” (450 mm) above the top of the chamber. Note that pave-ment subbase may be part of the ‘C’ layer. Granular well-graded soil/aggregate mixtures, <35% ﬁnes or processed aggregate. Most pavement subbase materials can be used in lieu of this layer. AASHTO M45A-1, A-2-4, A-3orAASHTO M431 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 Begin compaction after min. 12” (300 mm) of mate-rial over the chambers is reached. Compact additional layers in 6” (150 mm) max. lifts to a min. 95% Proctor density for well-graded material and 95% relative density for processed aggregate materials. Roller gross vehicle weight not to exceed 12,000 lbs (53 kN). Dynamic force not to exceed 20,000 lbs (89 kN) B Embedment Stone: Embedment Stone surrounding chambers from the foundation stone to the ‘C’ layer above. Clean, crushed, angular stone AASHTO M431 3, 357, 4, 467, 5, 56, 57 No compaction required. A Foundation Stone: Foundation Stone below the chambers from the subgrade up to the foot (bottom) of the chamber. Clean, crushed, angular stone,AASHTO M431 3, 357, 4, 467, 5, 56, 57 Place and compact in 6” (150 mm) lifts using two full coverages with a vibratory compactor.2, 3 Table 1- Acceptable Fill Materials Figure 1- Inspection Port Detail PLEASE NOTE: 1. The listed AASHTO designations are for gradations only. The stone must also be clean, crushed, angular. For example, a speciﬁcation for #4 stone would state: “clean, crushed, angular no. 4 (AASHTO M43) stone”. 2. StormTech compaction requirements are met for ‘A’ location materials when placed and compacted in 6” (150 mm) (max) lifts using two full coverages with a vibratory compactor. 3. Where inﬁltration surfaces may be comprised by compaction, for standard installations and standard design load conditions, a ﬂat surface may be achieved by raking or dragging without compaction equipment. For special load designs, contact StormTech for compaction requirements. Figure 2 - Fill Material Locations 5 D C B *TO BOTTOM OF FLEXIBLE PAVEMENT. FOR UNPAVEDINSTALLATIONS WHERE RUTTING FROM VEHICLES MAY OCCUR,INCREASE COVER TO 20" (510 mm). PAVEMENT LAYER (DESIGNED BYSITE DESIGN ENGINEER) SC-160LPEND CAP PERIMETER STONE 14"(350 mm)MIN* 10'(3.0 m)MAX 6" (150 mm)MIN EXCAVATION WALL(CAN BE SLOPED OR VERTICAL) 12" (300 mm) MIN ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEANCRUSHED, ANGULAR STONE IN A & B LAYERS NO SPACING REQUIREDBETWEEN CHAMBERS 25"(635 mm)12" (300 mm)MIN SINGLE LAYER OF GEOGRID BX124GG TO BE INSTALLEDBETWEEN NON WOVEN GEOTEXTILE AND BASE STONEWHEN BASE STONE DEPTH < 6" (150 mm)SUBGRADE SOILS A DEPTH OF STONE TO BE DETERMINEDBY SITE DESIGN ENGINEER4" (100 mm) MIN WITH GEOGRID BX124GG6" (150 mm) MIN WITHOUT GEOGRID 12"(300 mm) CONCRETE COLLAR PAVEMENT SC-160LP CHAMBER FLEXSTORM CATCH ITPART# 6212NYFXWITH USE OF OPEN GRATE 6" (150 mm) INSERTA TEEPART# 6P26FBSTIP*INSERTA TEE TO BE CENTEREDON CORRUGATION CREST 6" (150 mm) SDR35 PIPE 12" (300 mm) NYLOPLAST INLINEDRAIN BODY W/SOLID HINGEDCOVER OR GRATEPART# 2712AG6IP*SOLID COVER: 1299CGC*GRATE: 1299CGS 18" (450 mm) MIN WIDTH CONCRETE SLAB8" (200 mm) MIN THICKNESS CONCRETE COLLARNOT REQUIRED FORUNPAVED APPLICATION * THE PART# 2712AG6IPKIT CAN BEUSED TO ORDER ALL NECESSARYCOMPONENTS FOR A SOLID LIDINSPECTION PORT INSTALLATION Backfill of Chambers – Embedment Stone UNEVEN BACKFILL Initial embedment shall be spotted along the centerline of the chamber evenly anchoring the lower portion of the chamber. This is best accomplished with a stone conveyor or excavator reaching along the row. Backﬁll chambers evenly. Stone column height should never differ by more than 12” (300 mm) between adjacent chamber rows or between chamber rows and perimeter. EVEN BACKFILL Care should be taken when backﬁlling not to damage the chambers. Please refer to the allowable construction vehicle loads on page 6. Perimeter stone must be brought up evenly with chamber rows. Perimeter must be fully backﬁlled, with stone extended horizontally to the excavation wall. PERIMETER NOT BACKFILLED PERIMETER FULLY BACKFILLED Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 3 12" (300 mm) MAX. Backfill of Chambers – Embedment Stone UNEVEN BACKFILL Initial embedment shall be spotted along the centerline of the chamber evenly anchoring the lower portion of the chamber. This is best accomplished with a stone conveyor or excavator reaching along the row. Backﬁll chambers evenly. Stone column height should never differ by more than 12” (300 mm) between adjacent chamber rows or between chamber rows and perimeter. EVEN BACKFILL Care should be taken when backﬁlling not to damage the chambers. Please refer to the allowable construction vehicle loads on page 6. Perimeter stone must be brought up evenly with chamber rows. Perimeter must be fully backﬁlled, with stone extended horizontally to the excavation wall. PERIMETER NOT BACKFILLED PERIMETER FULLY BACKFILLED Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 3 12" (300 mm) MAX. ADS “Terms and Conditions of Sale” are available on the ADS website, www.ads-pipe.com. Advanced Drainage Systems, the ADS logo, and the green stripe are registered trademarks of Advanced Drainage Systems, Inc. StormTech® and the Isolator® Row are registered trademarks of StormTech, Inc #11065 01/19 CS ©2019 Advanced Drainage Systems, Inc. NOTES: 1. 36” (900 mm) of stabilized cover materials over the chambers is required for full dump truck travel and dumping. 2. During paving operations, dump truck axle loads on 14” (350 mm) of cover may be necessary. Precautions should be taken to avoid rutting of the road base layer, to ensure that compaction requirements have been met, and that a minimum of 14” (350 mm) of cover exists over the chambers. Contact StormTech for additional guidance on allowable axle loads during paving. 3. Ground pressure for track dozers is the vehicle operating weight divided by total ground contact area for both tracks. Excavators will exert higher ground pressures based on loaded bucket weight and boom extension. 4. Mini-excavators (< 8,000lbs/3,628 kg) can be used with at least 12” (300 mm) of stone over the chambers and are limited by the maximum ground pressures in Table 2 based on a full bucket at maximum boom extension. 5. Storage of materials such as construction materials, equipment, spoils, etc. should not be located over the StormTech system. The use of equipment over the StormTech system not covered in Table 2 (ex. soil mixing equipment, cranes, etc) is limited. Please contact StormTech for more information. 6. Allowable track loads based on vehicle travel only. Excavators shall not operate on chamber beds until the total backﬁll reaches 3 feet (900 mm) over the entire bed. Material Location Fill Depth over Chambers in. [mm] Maximum Allowable Wheel Loads Maximum Allowable Track Loads6 Maximum Allowable Roller Loads Max Axle Load for Trucks lbs [kN] Max Wheel Load for Loaders lbs [kN] Track Width in. [mm] Max Ground Pressurepsf [kPa] Max Drum Weight or Dynamic Force lbs [kN] D Final Fill Material 36” [900]Compacted 32,000 [142]16,000 [71]12” [305]18” [457]24” [610]30” [762]36” [914] 3420 [164]2350 [113]1850 [89]1510 [72]1310 [63] 38,000 [169] C Initial Fill Material 24” [600]Compacted 32,000 [142]16,000 [71]12” [305]18” [457]24” [610]30” [762]36” [914] 2480 [119]1770 [85]1430 [68]1210 [58]1070 [51] 20,000 [89] 24” [600]Loose/Dumped 32,000 [142]16,000 [71]12” [305]18” [457]24” [610]30” [762]36” [914] 2245 [107]1625 [78]1325 [63]1135 [54]1010 [48] 20,000 [89]Roller gross vehicle weight not toexceed 12,000 lbs. [53 kN] 18” [450]32,000 [142]16,000 [71]12” [305]18” [457]24” [610]30” [762]36” [914] 2010 [96]1480 [71]1220 [58]1060 [51]950 [45] 20,000 [89]Roller gross vehicle weight not toexceed 12,000 lbs. [53 kN] B Embedment Stone 12” [300]16,000 [71]NOT ALLOWED 12” [305]18” [457]24” [610]30” [762]36” [914] 1540 [74]1190 [57]1010 [48]910 [43]840 [40] 20,000 [89]Roller gross vehicle weight not toexceed 12,000 lbs. [53 kN] 6” [150]8,000 [35]NOT ALLOWED 12” [305]18” [457]24” [610]30” [762]36” [914] 1070 [51]900 [43]800 [38]760 [36]720 [34] NOT ALLOWED Material Location Placement Methods/ Restrictions Wheel Load Restrictions Track Load Restrictions Roller Load Restrictions See Table 2 for Maximum Construction Loads D Final Fill Material A variety of placement methods may beused. All construction loads must notexceed the maximum limits in Table 2. 36” (900 mm) minimumcover required for dumptrucks to dump overchambers. Dozers to push parallel torows until 36” (900mm)compaced cover isreached.4 Roller travel parallel to rowsonly until 36” (900 mm)compacted cover isreached. C Initial Fill Material Excavator positioned off bed recommended.Small excavator allowed overchambers. Small dozer allowed. Asphalt can be dumped intopaver when compactedpavement subbase reaches18” (450 mm) above top ofchambers. Small LGP track dozers & skidloaders allowed to grade coverstone with at least 6” (150 mm)stone under tracks at all times.Equipment must push parallelto rows at all times. Use dynamic force of rolleronly after compacted ﬁlldepth reaches 12” (300 mm)over chambers. Roller travelparallel to chamber rows only. B Embedment Stone No equipment allowed on bare chambers.Use excavator or stone conveyorpositioned off bed or on foundationstone to evenly ﬁll around all chambersto at least the top of chambers. No wheel loads allowed.Material must be placedoutside the limits of thechamber bed. No tracked equipment isallowed on chambers until amin. 6” (150 mm) coverstone is in place. No rollers allowed. A Foundation Stone No StormTech restrictions. Contractor responsible for any conditions or requirements by others relative to subgrade bearingcapacity, dewatering or protection of subgrade. Table 2 - Maximum Allowable Construction Vehicle Loads5 Table 3 - Placement Methods and Descriptions Call StormTech at 888.892.2694 for technical and product information or visit www.stormtech.com 6 20 Beaver Road, Suite 104 Wethersfield Connecticut 06109 888.892.2694 fax 866.328.8401 www.stormtech.com 17.0 Standard Limited Warranty STANDARD LIMITED WARRANTY OF STORMTECH LLC (“STORMTECH”): PRODUCTS (A) This Limited Warranty applies solely to the StormTech chambers and end plates manufactured by StormTech and sold to the original purchaser (the “Purchaser”). The chambers and end plates are collectively referred to as the “Products.” (B) The structural integrity of the Products, when installed strictly in accordance with StormTech’s written installation instructions at the time of installation, are warranted to the Purchaser against defective materials and workmanship for one (1) year from the date of purchase. Should a defect appear in the Limited Warranty period, the Purchaser shall provide StormTech with written notice of the alleged defect at StormTech’s corporate headquarters within ten (10) days of the discovery of the defect. The notice shall describe the alleged defect in reasonable detail. StormTech agrees to supply replacements for those Products determined by StormTech to be defective and covered by this Limited Warranty. The supply of replacement products is the sole remedy of the Purchaser for breaches of this Limited Warranty. StormTech’s liability specifically excludes the cost of removal and/or installation of the Products. (C) THIS LIMITED WARRANTY IS EXCLUSIVE. THERE ARE NO OTHER WARRANTIES WITH RESPECT TO THE PRODUCTS, INCLUDING NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE. (D) This Limited Warranty only applies to the Products when the Products are installed in a single layer. UNDER NO CIRCUMSTANCES, SHALL THE PRODUCTS BE INSTALLED IN A MULTI-LAYER CONFIGURATION. (E) No representative of StormTech has the authority to change this Limited Warranty in any manner or to extend this Limited Warranty. This Limited Warranty does not apply to any person other than to the Purchaser. (F) Under no circumstances shall StormTech be liable to the Purchaser or to any third party for product liability claims; claims arising from the design, shipment, or installation of the Products, or the cost of other goods or services related to the purchase and installation of the Products. For this Limited Warranty to apply, the Products must be installed in accordance with all site conditions required by state and local codes; all other applicable laws; and StormTech’s written installation instructions. (G) THE LIMITED WARRANTY DOES NOT EXTEND TO INCIDENTAL, CONSEQUENTIAL, SPECIAL OR INDIRECT DAMAGES. STORMTECH SHALL NOT BE LIABLE FOR PENALTIES OR LIQUIDATED DAMAGES, INCLUDING LOSS OF PRODUCTION AND PROFITS; LABOR AND MATERIALS; OVERHEAD COSTS; OR OTHER LOSS OR EXPENSE INCURRED BY THE PURCHASER OR ANY THIRD PARTY. SPECIFICALLY EXCLUDED FROM LIMITED WARRANTY COVERAGE ARE DAMAGE TO THE PRODUCTS ARISING FROM ORDINARY WEAR AND TEAR; ALTERATION, ACCIDENT, MISUSE, ABUSE OR NEGLECT; THE PRODUCTS BEING SUBJECTED TO VEHICLE TRAFFIC OR OTHER CONDITIONS WHICH ARE NOT PERMITTED BY STORMTECH’S WRITTEN SPECIFICATIONS OR INSTALLATION INSTRUCTIONS; FAILURE TO MAINTAIN THE MINIMUM GROUND COVERS SET FORTH IN THE INSTALLATION INSTRUCTIONS; THE PLACEMENT OF IMPROPER MATERIALS INTO THE PRODUCTS; FAILURE OF THE PRODUCTS DUE TO IMPROPER SITING OR IMPROPER SIZING; OR ANY OTHER EVENT NOT CAUSED BY STORMTECH. A PRODUCT ALSO IS EXCLUDED FROM LIMITED WARRANTY COVERAGE IF SUCH PRODUCT IS USED IN A PROJECT OR SYSTEM IN WHICH ANY GEOTEXTILE PRODUCTS OTHER THAN THOSE PROVIDED BY ADVANCED DRAINAGE SYSTEMS ARE USED. THIS LIMITED WARRANTY REPRESENTS STORMTECH’S SOLE LIABILITY TO THE PURCHASER FOR CLAIMS RELATED TO THE PRODUCTS, WHETHER THE CLAIM IS BASED UPON CONTRACT, TORT, OR OTHER LEGAL THEORY. An company ADS “Terms and Conditions of Sale” can be found on the ADS website,www.ads-pipe.com Advanced Drainage Systems and the ADS logo is a registered trademark of Advanced Drainage Systems, Inc.Advanced Drainage Systems, Inc. #0601T 02/12 ADS GEOSYNTHETICS 0601T NONWOVEN GEOTEXTILE Scope This specification describes ADS Geosynthetics 6.0 oz (0601T) nonwoven geotextile. Filter Fabric Requirements ADS Geosynthetics 6.0 oz (0601T) is a needle-punched nonwoven geotextile made of 100% polypropylene staple fibers, which are formed into a random network for dimensional stability. ADS Geosynthetics 6.0 oz (0601T) resists ultraviolet deterioration, rotting, biological degradation, naturally encountered basics and acids. Polypropylene is stable within a pH range of 2 to 13. ADS Geosynthetics 6.0 oz (0601T) conforms to the physical property values listed below: Filter Fabric Properties PROPERTY TESTMETHOD UNIT M.A.R.V. (Minimum Average Roll Value) Weight (Typical) ASTM D 5261 oz/yd2 (g/m2)6.0 (203) Grab Tensile ASTM D 4632 lbs (kN) 160 (0.711) Grab Elongation ASTM D 4632 % 50 Trapezoid Tear Strength ASTM D 4533 lbs (kN) 60 (0.267) CBR Puncture Resistance ASTM D 6241 lbs (kN) 410 (1.82) Permittivity* ASTM D 4491 sec-1 1.5 Water Flow* ASTM D 4491 gpm/ft2 (l/min/m2)110 (4480) AOS* ASTM D 4751 US Sieve (mm) 70 (0.212) UV Resistance ASTM D 4355 %/hrs 70/500 PACKAGING Roll Dimensions (W x L) – ft 12.5 x 360 /15x300 Square Yards Per Roll 500 Estimated Roll Weight – lbs 195 * At the time of manufacturing. Handling may change these properties. ADS “Terms and Conditions of Sale” can be found on the ADS website,www.ads-pipe.com Advanced Drainage Systems and the ADS logo is a registered trademark of Advanced Drainage Systems, Inc.Advanced Drainage Systems, Inc. #315W 02/12 ADS GEOSYNTHETICS 315W WOVEN GEOTEXTILE Scope This specification describes ADS Geosynthetics 315W woven geotextile. Filter Fabric Requirements ADS Geosynthetics 315W is manufactured using high tenacity polypropylene yarns that are woven to form a dimensionally stable network, which allows the yarns to maintain their relative position. ADS Geosynthetics 315W resists ultraviolet deterioration, rotting and biological degradation and is inert to commonly encountered soil chemicals. ADS Geosynthetics 315W conforms to the physical property values listed below: Filter Fabric Properties PROPERTY TEST METHOD ENGLISHM.A.R.V. (Minimum Average Roll Value) METRICM.A.R.V. (Minimum Average Roll Value) Tensile Strength (Grab) ASTM D-4632 315 lbs 1400 N Elongation ASTM D-4632 15% 15% CBR Puncture ASTM D-6241 900 lbs 4005 N Puncture ASTM D-4833 150 lbs 667 N Mullen Burst ASTM D-3786 600 psi 4134 kPa Trapezoidal Tear ASTM D-4533 120 lbs 533 N UV Resistance (at 500 hrs) ASTM D-4355 70% 70% Apparent Opening Size (AOS)* ASTM D-4751 40 US Std. Sieve 0.425 mm Permittivity ASTM D-4491 .05 sec‾1 .05 sec‾1 Water Flow Rate ASTM D-4491 4 gpm/ft2 163 l/min/m2 Roll Sizes 12.5’ x 360’ 15.0’ x 300’ 17.5’ x 258’ 3.81 m x 109.8 m 4.57 m x 91.5 m 5.33 m x 78.6 m *Maximum average roll value.