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HomeMy WebLinkAboutDrainage Report Drainage Computations Summary For The Corner 116th Street & Rangeline Road Carmel, IN Prepared For: Kite Realty Group 30 S. Meridian Suite 1100 Indianapolis, In 46240 Prepared By: American Structurepoint, Inc. 9025 River Road, Suite 200 Indianapolis, Indiana 46240 (317) 547-5580 Submitted by: Nathan Winslow, PE Josh Rodgers, PE Submitted: February 15th, 2021 Table of Contents PROJECT NARRATIVE Project Description Existing Conditions Proposed Conditions Stormwater Quality Summary and Conclusions APPENDICES Appendix A Maps · Project Location Map · Soils Map and Data · Flood Insurance Rate Map (FIRM) Appendix B Existing Conditions · Existing Conditions Map · Existing Runoff Coefficient (c) and Curve Number (CN) Calculations Appendix C Proposed Conditions-Storm Sewer · Proposed Storm Sewer Basins Map · Municipality Rainfall Data · Runoff Coefficient (c) and Curve Number (CN) Calculations · 10-Year Rational Method Storm Sewer Calculations · Structure Data Table · Hydraulic Grade Line (HGL) Calculations · Casting Capacity Calculations · Storm Sewer Details Appendix D Proposed Conditions-Wet Pond Design · Overall Proposed Basin Map · HydroCAD Model Appendix E Proposed Conditions-Water Quality DRAINAGE COMPUTATIONS SUMMARY For The Corner 116th Street & Rangeline Road Carmel, IN PROJECT DESCRIPTION The proposed project is located at the intersection of 116th Street and Rangeline Road in Carmel, Hamilton County, Indiana. The XXX acre site was razed in 2019 and currently contains milled asphalt and fill dirt that was associated with the previous development. Proposed work consists of the construction of three structures: a mixed use retail and residential building, a dedicated residential building, and a parking garage. The Natural Resources Conservation Service (NRCS) Web Soil Survey of Hamilton County, IN, indicates approximately 53% distribution of Urban Land, 23% distribution of Brookston Silt Clay and 24% distribution of Shoals Silt Loam. Refer to Appendix A for the Soils Map. The site is located within a special flood hazard zone as indicated on the Flood Insurance Rate Map (FIRM) 18057C0209G for Hamilton, County Indiana dated 11/19/2014. Refer to Appendix A for the FIRM. The adjacent land uses for this site have been included below: North: Commercial South: Single Family East: Fueling Station/Single Family West: City Park EXISTING CONDITIONS The existing condition of the site currently consists of milled asphalt and fill dirt that will be used for the proposed construction. Previously, the site was developed as a typical strip retail center with small shops and a parking lot with another smaller standalone bank. The site was fully impervious and drained north to south into a storm sewer system. The system discharged into a municipal storm sewer without any detention. Summarize allowable release rates and what they are based on—municipality requirements, master plan/past drainage report, etc. Table 1 contains the allowable release rates for this site. Refer to Appendix F for Existing Drainage Report (Date). Area (acres) 4.49 Curve Number 98 Time of Concentration (min) 5 Allowable Release Rate (Q10) 23.20 cfs Allowable Release Rate (Q100) 39.35 cfs Table 1. Site Allowable Release Rates PROPOSED CONDITIONS The proposed development consits of the construction of three structures. The primary building will be a mixed use structure with first floor retail and 4 floors of residential units. A structure in the back will be 100% residential units. Finally, a parking garge between the two buildings will serve both. A perimeter drive that encircles the garage will serve as the primary corridor for utilites incouding storm sewer. The site will drain inward from the permiter to the internal drive described previously where the storm sewers will convey runoff from the roofs and driveway to Carmel Creek immediately south of the site. The site consists of three primary basins with each consisting of its own sub-basins. The three basins are Building A (mixed use), Building B (fully residential, and the parking garage. All three consist primarily of sheet flow for a short time before entering the storm sewer. Refer to Appendix C for storm sewer calculations. Because the fully developed condition will not increase the impervious area of the previously developed condition no detetnion will be provided. The peak runoff rates for the existing and fully developed conditions were modeld in HydroCAD. Table 2 contains the proposed release rates. Refer to Appendix D for the HydroCAD model. Return Event Peak Runoff Rate (cfs) 10-Year 21.79 100-Year 37.84 Table 2. Release Rate Summary STORMWATER QUALITY Stormwater quality will be provided by three methods. The western portion of the site that does not enter the storm sewer and directly discharges into Carmel Creek will be mitigated by well-established existing vegetation. The roof and pavement areas will have two treatments devices. Runoff will enter the storm sewers and pass through storm drain inserts. From three all runoff from impervious surfaces will pass through an Aquaswirl CX-8 water quality unit. SUMMARY AND CONCLUSIONS The proposed storm sewer and site improvements have been designed in accordance with the City of Carmel Stormwater Technical Standards. We believe the proposed improvements will not adversely affect this site, adjacent developments, the City of Carmel, or Hamilton County. APPENDIX A MAPS Hamilton County, Indiana Parcels February 15, 2021 0 0.15 0.30.075 mi 0 0.25 0.50.125 km 1:9,600 Hamilton County compiled this map. Although strict accuracy standards have been employed, Hamilton County does not warrant or guarantee the accuracy of the information contained herein and disclaims any and all liability resulting from any error or omission.Author: Hamilton County Hydrologic Soil Group—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 2/14/2021 Page 1 of 44423110442313044231504423170442319044232104423230442325044232704423290442331044231104423130442315044231704423190442321044232304423250442327044232904423310574440574460574480574500574520574540574560574580 574440 574460 574480 574500 574520 574540 574560 574580 39° 57' 24'' N 86° 7' 42'' W39° 57' 24'' N86° 7' 36'' W39° 57' 17'' N 86° 7' 42'' W39° 57' 17'' N 86° 7' 36'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 16N WGS84 0 50 100 200 300 Feet 0 15 30 60 90 Meters Map Scale: 1:1,030 if printed on A portrait (8.5" x 11") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A A/D B B/D C C/D D Not rated or not available Soil Rating Points A A/D B B/D C C/D D Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:15,800. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Hamilton County, Indiana Survey Area Data: Version 21, Jun 4, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Aug 1, 2018—Sep 30, 2018 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Hydrologic Soil Group—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 2/14/2021 Page 2 of 4 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI UcfA Urban land-Crosby silt loam complex, fine- loamy subsoil, 0 to 2 percent slopes 1.4 29.1% UkbA Urban land-Miami silt loam complex, 0 to 2 percent slopes 1.0 20.0% YbvA Brookston silty clay loam-Urban land complex, 0 to 2 percent slopes B/D 1.4 27.7% YshAH Shoals silt loam-Urban land complex, 0 to 2 percent slopes, frequently flooded, brief duration B/D 1.1 23.1% Totals for Area of Interest 4.9 100.0% Hydrologic Soil Group—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 2/14/2021 Page 3 of 4 Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Hydrologic Soil Group—Hamilton County, Indiana Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 2/14/2021 Page 4 of 4 National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOOD HAZARD AREAS Without Base Flood Elevation (BFE) Zone A, V, A99 With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREEN Area of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 2/14/2021 at 9:11 PM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. 1:6,000 86°7'58"W 39°57'34"N 86°7'21"W 39°57'7"N Basemap: USGS National Map: Orthoimagery: Data refreshed October, 2020 APPENDIX B EXISTING CONDITIONS BENCHMARK DATA EXISTING LEGEND 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PLOT DATE: 11/6/2020 2:44 PMPLOT SCALE: 1:2.5849EDIT DATE: 11/5/2020EDITED BY: PDOTTERYDRAWING FILE: P:\2015\02458\D. Drawings\Civil\Construction Documents\2015.02458.CE.C100.XTP.dwg© C100 EXISTING TOPOGRAPHY PLAN LEGAL DESCRIPTION 1S Existing Conditions Routing Diagram for 2015.02458.CE.Drainage. Prepared by American Structurepoint, LLC, Printed 2/12/2021 HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr 10-Year Rainfall=3.83"2015.02458.CE.Drainage. Printed 2/12/2021Prepared by American Structurepoint, LLC Page 2HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Conditions Runoff = 23.20 cfs @ 11.98 hrs, Volume= 1.240 af, Depth> 3.31" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" Area (ac) CN Description * 4.490 98 Impervious Area 4.490 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment 1S: Existing Conditions Runoff Hydrograph Time (hours) 201918171615141312111098765Flow (cfs)25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=4.490 ac Runoff Volume=1.240 af Runoff Depth>3.31" Tc=7.0 min CN=98 23.20 cfs Type II 24-hr 100-Year Rainfall=6.46"2015.02458.CE.Drainage. Printed 2/12/2021Prepared by American Structurepoint, LLC Page 3HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Conditions Runoff = 39.35 cfs @ 11.98 hrs, Volume= 2.126 af, Depth> 5.68" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=6.46" Area (ac) CN Description * 4.490 98 Impervious Area 4.490 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.0 Direct Entry, Subcatchment 1S: Existing Conditions Runoff Hydrograph Time (hours) 201918171615141312111098765Flow (cfs)44 42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Type II 24-hr 100-Year Rainfall=6.46" Runoff Area=4.490 ac Runoff Volume=2.126 af Runoff Depth>5.68" Tc=7.0 min CN=98 39.35 cfs APPENDIX C PROPOSED CONDITIONS-STORM SEWER INJ10821.5 BW 823.75 TW 822.86 INJ10EXISTING LEGEND 9025 River Road, Suite 200 | Indianapolis, Indiana 46240 TEL 317.547.5580 | FAX 317.543.0270 www.structurepoint.com PLOT DATE: 2/12/2021 5:44 PMPLOT SCALE: 1:2.5849EDIT DATE: 11/6/2020EDITED BY: JRODGERSDRAWING FILE: P:\2015\02458\E. Reports_Specs\Civil\Drainage\Appendix\C\2015.02458.CE.SUB BASIN MAP.dwg© C1 SUB BASIN MAP UTILITY LEGEND Description:The Corner Reviewing Entity:City of Carmel Job #:2015.02458 Date:02/15/21 Duration Duration (min)(hr)2-Year 5-Year 10-Year 25-Year 50-Year 100-Year 5 0.083 4.63 5.43 6.12 7.17 8.09 9.12 10 0.167 3.95 4.63 5.22 6.12 6.90 7.78 30 0.5 2.46 2.88 3.25 3.81 4.29 4.84 60 1 1.54 1.80 2.03 2.38 2.68 3.03 120 2 0.83 0.95 1.11 1.37 1.60 1.87 180 3 0.59 0.72 0.84 0.84 1.22 1.42 360 6 0.35 0.43 0.50 0.62 0.72 0.85 720 12 0.20 0.24 0.20 0.35 0.41 0.48 1440 24 0.11 0.14 0.16 0.20 0.23 0.27 Duration Duration (min)(hr)2-Year 5-Year 10-Year 25-Year 50-Year 100-Year 5 0.083 0.39 0.45 0.51 0.60 0.67 0.76 10 0.167 0.66 0.77 0.87 1.02 1.15 1.30 30 0.5 1.23 1.44 1.63 1.91 2.15 2.42 60 1 1.54 1.80 2.03 2.38 2.68 3.03 120 2 1.66 1.90 2.22 2.74 3.20 3.74 180 3 1.76 2.16 2.52 2.52 3.66 4.26 360 6 2.10 2.58 3.00 3.72 4.32 5.10 720 12 2.40 2.88 2.40 4.20 4.92 5.76 1440 24 2.64 3.36 3.84 4.82 5.52 6.48 Rainfall Intensity (in/hr) City of Carmel Data Job Information RAINFALL INTENSITIES & DEPTHS Frequency Rainfall Depth (in) Frequency The Corner City of Carmel 2015.02458 2/15/2021 Runoff Coefficient Runoff Curve Number Roof 1.00 98 Grass 0.30 74 Pavement 0.85 98 Water 1.00 100 Roof Area Pervious Area Pavement Area Water Area Total Area Weighted Runoff Coefficient Weighted Curve Number (acres)(acres)(acres)(acres)(acres)C CN Carmel Creek 101 - - 0.07 - 0.07 0.85 98 Carmel Creek 102 - - 0.03 - 0.03 0.85 98 Carmel Creek 103 - - 0.11 - 0.11 0.85 98 Carmel Creek 104 - - 0.23 - 0.23 0.85 98 Carmel Creek 105 - - 0.06 - 0.06 0.85 98 Carmel Creek 106 - - 0.05 - 0.05 0.85 98 Carmel Creek 107 - - 0.05 - 0.05 0.85 98 Carmel Creek 108 - - 0.06 - 0.06 0.85 98 Carmel Creek 109 - - 0.04 - 0.04 0.85 98 Carmel Creek 110 - - 0.05 - 0.05 0.85 98 Carmel Creek 111 - - 0.04 - 0.04 0.85 98 Carmel Creek 112 - - 0.10 - 0.10 0.85 98 Carmel Creek 113 - - - - - - - Carmel Creek 114 - - 0.15 - 0.15 0.85 98 Carmel Creek 115 - - 0.21 - 0.21 0.85 98 Carmel Creek 116 - - 0.21 - 0.21 0.85 98 Carmel Creek 117 - - - - - - - Carmel Creek 118 - - - - - - - Carmel Creek 119 - - - - - - - Runoff Coefficient and Runoff Curve Number Calculation Job Information Basin Structure Description: Entity: Job #: Date: Description:The CornerReviewing Entity:Job #:Date:10-yrEntity DataInvert Drop0.1INLET CASTING TO INLET CASTING INLETc AREA c AREA INLET CASTING CUM. cA Tc Tcum CASTING INLET Q CUM. QU.S. D.S. U.S. D.S. U.S. D.S(ft)(acres)(acres)(min)(min)(CFS)(CFS)(inches)(%)(cfs)(%)(ft/sec)(ft)(ft/sec)(min)(ft)(ft)(ft)(ft)(ft)(ft)101 10263.2RCP0.85 0.07- -0.06 0.06 0.065.005.00 6.12 6.12 0.36 0.3612 0.310.013 1.97 19% 2.51 0.29 1.91 0.42820.65820.65 812.74 812.55 6.74 6.93102 10343.3RCP0.85 0.03- -0.03 0.03 0.095.005.42 6.12 6.04 0.16 0.5112 0.310.013 1.97 26% 2.51 0.35 2.11 0.29820.65819.46 812.45 812.32 7.03 5.97103 10556.7RCP0.85 0.11- -0.09 0.09 0.185.005.71 6.12 5.99 0.57 1.0712 0.310.013 1.97 54% 2.51 0.53 2.56 0.38819.46819.38 812.22 812.05 6.07 6.17104 10523.3RCP0.85 0.231.00 0.130.33 0.20 0.335.005.00 6.12 6.12 1.20 1.9915 0.310.013 3.57 56% 2.91 0.67 2.99 0.13819.80819.38 812.12 812.05 6.24 5.90105 10658.3RCP0.85 0.06- -0.05 0.05 0.565.006.09 6.12 5.92 0.31 3.2915 0.350.013 3.82 86% 3.11 0.89 3.50 0.31819.38819.50 811.95 811.74 6.00 6.32106 10760.0RCP0.85 0.051.00 0.280.32 0.04 0.885.006.40 6.12 5.87 0.26 5.1518 0.350.013 6.21 83% 3.52 1.04 3.93 0.28819.50819.50 811.64 811.43 6.15 6.36107 10860.0RCP0.85 0.051.00 0.060.10 0.04 0.985.006.68 6.12 5.82 0.26 5.7018 0.450.013 7.05 81% 3.99 1.02 4.44 0.25819.50819.50 811.33 811.06 6.46 6.73108 10972.7RCP0.85 0.061.00 0.320.37 0.05 1.355.006.93 6.12 5.77 0.31 7.8021 0.380.013 9.77 80% 4.06 1.18 4.51 0.30819.50819.48 810.96 810.69 6.56 6.81109 11046.6RCP0.85 0.041.00 0.310.34 0.03 1.705.007.23 6.12 5.72 0.21 9.6924 0.300.013 12.39 78% 3.94 1.33 4.36 0.20819.48819.47 810.59 810.45 6.64 6.77110 11160.0RCP0.85 0.051.00 0.070.11 0.04 1.815.007.43 6.12 5.68 0.26 10.2724 0.330.013 13.00 79% 4.14 1.34 4.59 0.24819.47819.47 810.35 810.15 6.87 7.07111 11847.9RCP0.85 0.041.00 0.150.18 0.03 1.995.007.67 6.12 5.64 0.21 11.2324 0.390.013 14.13 79% 4.50 1.35 4.99 0.18819.47819.36 810.05 809.86 7.17 7.2511211366.0RCP0.850.101.000.120.210.090.215.005.006.126.120.521.25120.310.0131.9764%2.510.582.660.44819.19819.21811.26811.066.776.99113 11430.3RCP- -1.00 0.200.20 - 0.415.005.44 6.12 6.04 - 2.4515 0.300.013 3.54 69% 2.88 0.76 3.11 0.18819.21817.92 810.96 810.86 6.82 5.62114 11565.3RCP0.85 0.151.00 0.170.30 0.13 0.705.005.61 6.12 6.01 0.78 4.2218 0.300.013 5.75 73% 3.26 0.95 3.56 0.33817.92816.84 810.76 810.57 5.45 4.56115 117119.6RCP0.85 0.211.00 0.170.35 0.18 1.055.005.95 6.12 5.95 1.09 6.2521 0.300.013 8.68 72% 3.61 1.10 3.93 0.55816.84817.86 810.47 810.11 4.39 5.77116 11733.1RCP0.85 0.21- -0.18 0.18 0.185.005.00 6.12 6.12 1.09 1.0912 0.310.013 1.97 56% 2.51 0.53 2.57 0.22817.46817.86 813.71 813.61 2.58 3.08117 11849.2RCP- -1.00 0.290.29 - 1.525.006.50 6.12 5.85 - 8.8924 0.300.013 12.39 72% 3.94 1.25 4.29 0.21817.86819.36 810.01 809.86 5.60 7.25118 11911.7RCP- -- -- - 3.515.007.85 6.12 5.61 - 19.6930 0.380.013 25.12 78% 5.12 1.67 5.66 0.04819.36819.75 809.76 809.72 6.81 7.24119 12092.0RCP- -- -- - 3.515.007.89 6.12 5.60 - 19.6630 0.380.013 25.12 78% 5.12 1.67 5.66 0.30819.75- 809.62 809.27 7.34 -ELEV.ELEV.FULL FLOW VELOCITYCOVERINVERTRIMTRAVEL TIME02/15/21(in/hr)Design Storm:TO STR.DIRECT TO CASTINGPIPE MATERIALDesign ParametersIntensity Calculation Method:cAInvert Calculation Method:FLOWSTR.LENGTHDrop Amount:PROPOSED STORM SEWER SYSTEM STORM SEWER DESIGN TABLE - RATIONAL METHODJob InformationCity of Carmel2015.02458ENTITY DATAiPIPE DIAMETERPIPE SLOPE FULL PIPE CAPACITYDIRECT TO INLETFLOW DEPTHFLOW VELOCITYCAPACITY UTILIZATIONMANNING'S N Description:The CornerReviewing Entity:City of CarmelJob #:2015.02458Date:2/15/2021STR. STRUCTURE CASTINGGRADE CONNECT TO REMARKSNO.TYPETYPEL.F.SIZETYPET.O.R.UPSTMDNSTM(%)STRUCT.101 TYPE ''C'' MANHOLE R-3010 63 12 RCP 820.65 812.74 812.55 0.31 102 102 TYPE ''C'' MANHOLE R-3010 43 12 RCP 820.65 812.45 812.32 0.31 103 103 TYPE ''C'' MANHOLE R-3472 57 12 RCP 819.46 812.22 812.05 0.31 105 104 TYPE ''C'' MANHOLE R-3472 23 15 RCP 819.80 812.12 812.05 0.31 105 105 TYPE ''C'' MANHOLE R-3472 58 15 RCP 819.38 811.95 811.74 0.35 106 106 TYPE ''C'' MANHOLE R-3472 60 18 RCP 819.50 811.64 811.43 0.35 107 107 TYPE ''C'' MANHOLE R-3472 60 18 RCP 819.50 811.33 811.06 0.45 108 108 TYPE ''C'' MANHOLE R-3472 73 21 RCP 819.50 810.96 810.69 0.38 109 109 TYPE ''C'' MANHOLE R-3472 47 24 RCP 819.48 810.59 810.45 0.30 110 110 TYPE ''C'' MANHOLE R-3472 60 24 RCP 819.47 810.35 810.15 0.33 111 111 TYPE ''C'' MANHOLE R-3472 48 24 RCP 819.47 810.05 809.86 0.39 118 112 TYPE ''C'' MANHOLE R-3010 66 12 RCP 819.19 811.26 811.06 0.31 113 113 TYPE ''C'' MANHOLE R-1772 30 15 RCP 819.21 810.96 810.86 0.30 114 114 TYPE ''C'' MANHOLE R-3472 65 18 RCP 817.92 810.76 810.57 0.30 115 115 TYPE ''C'' MANHOLE R-3472 120 21 RCP 816.84 810.47 810.11 0.30 117 116 TYPE ''A'' INLET R-3472 33 12 RCP 817.46 813.71 813.61 0.31 117 117 TYPE ''C'' MANHOLE R-1772 49 24 RCP 817.86 810.01 809.86 0.30 118 118 TYPE ''J'' MANHOLE R-1772 12 30 RCP 819.36 809.76 809.72 0.38 119 119 TYPE ''J'' MANHOLE R-1772 92 30 RCP 819.75 809.62 809.27 0.38 120 *ALL CASTINGS SHALL READ "DUMP NO WASTE DRAINS TO WATERWAY"PROPOSED STORM SEWER SYSTEM STORM SEWER STRUCTURE DATA TABLEPIPE ELEVATIONSPIPEJob InformationSTORM SEWER - STRUCTURE DATA TABLE Job Information Description: Reviewing Entity:City of Carmel Job #:2015.02458 Date:- 10-yr 50% Entity Data SPECIFIED SPECIFIED PIPE STRUCTURE CASTING CASTING CASTING ENTITY DATA CASTING ORIFICE FLOW WEIR FLOW PONDING DEPTH STR. STRUCTURE CASTING COVER DEPTH c A Tc i FLOW DEPTH DEPTH NO. TYPE TYPE (ft) (ft) (acres) (min) (in/hr) (cfs) (ft) (ft) (ft) 101 TYPE ''C'' MANHOLE R-3010 6.74 7.91 0.85 0.07 5.00 6.12 0.36 0.02 0.15 0.15 102 TYPE ''C'' MANHOLE R-3010 7.03 8.20 0.85 0.03 5.00 6.12 0.16 0.00 0.09 0.09 103 TYPE ''C'' MANHOLE R-3472 6.07 7.24 0.85 0.11 5.00 6.12 0.57 0.03 0.15 0.15 104 TYPE ''C'' MANHOLE R-3472 6.24 7.68 0.85 0.23 5.00 6.12 1.20 0.15 0.24 0.24 105 TYPE ''C'' MANHOLE R-3472 6.00 7.43 0.85 0.06 5.00 6.12 0.31 0.01 0.10 0.10 106 TYPE ''C'' MANHOLE R-3472 6.15 7.86 0.85 0.05 5.00 6.12 0.26 0.01 0.09 0.09 107 TYPE ''C'' MANHOLE R-3472 6.46 8.17 0.85 0.05 5.00 6.12 0.26 0.01 0.09 0.09 108 TYPE ''C'' MANHOLE R-3472 6.56 8.54 0.85 0.06 5.00 6.12 0.31 0.01 0.10 0.10 109 TYPE ''C'' MANHOLE R-3472 6.64 8.89 0.85 0.04 5.00 6.12 0.21 0.00 0.08 0.08 110 TYPE ''C'' MANHOLE R-3472 6.87 9.12 0.85 0.05 5.00 6.12 0.26 0.01 0.09 0.09 111 TYPE ''C'' MANHOLE R-3472 7.17 9.42 0.85 0.04 5.00 6.12 0.21 0.00 0.08 0.08 112 TYPE ''C'' MANHOLE R-3010 6.77 7.93 0.85 0.10 5.00 6.12 0.52 0.05 0.19 0.19 113 TYPE ''C'' MANHOLE R-1772 6.82 8.25 - - - - - - - 0.00 114 TYPE ''C'' MANHOLE R-3472 5.45 7.16 0.85 0.15 5.00 6.12 0.78 0.06 0.18 0.18 115 TYPE ''C'' MANHOLE R-3472 4.39 6.37 0.85 0.21 5.00 6.12 1.09 0.12 0.22 0.22 116 TYPE ''A'' INLET R-3472 2.58 3.75 0.85 0.21 5.00 6.12 1.09 0.12 0.22 0.22 117 TYPE ''C'' MANHOLE R-1772 5.60 7.85 - - - - - - - 0.00 118 TYPE ''J'' MANHOLE R-1772 6.81 9.60 - - - - - - - 0.00 119 TYPE ''J'' MANHOLE R-1772 7.34 10.13 - - - - - - - 0.00 Design Parameters Design Storm: The Corner Intensity Calculation Method: PROPOSED STORM SEWER SYSTEM ORIFICE FLOW CASTING CAPACITY CALCULATIONS Clogging (%): Description:The CornerEntity:City of CarmelJob #:2015.02458Date:-10-yrEntity Data(dc+D)/2Structure Coefficient(ft)(ft)(ft)(ft)(min)(in/hr)(cfs)(in.)%(sq. ft)(ft.)(ft.)(ft.)(ft)(ft/s)(ft)(ft)(ft/s)(ft/s)(ft)(ft)(ft)(ft.)(ft.)(ft.)102 101 812.55 813.55 813.18 814.18 5.00 6.12 0.36 12 0.31 0.190 1.140 0.167 0.291 0.249 1.91 63 0.013 0.192 - - 1.25 2.11 - 0.071 0.263 814.44 820.65 813.74103 102 812.32 813.32 812.97 814.04 5.42 6.04 0.51 12 0.31 0.244 1.264 0.193 0.349 0.297 2.11 43 0.013 0.131 1.91 - 0.50 2.56 - 0.006 0.137 814.18 820.65 813.45105 103 812.05 813.05 812.76 813.86 5.71 5.99 1.07 12 0.31 0.418 1.622 0.258 0.526 0.435 2.56 57 0.013 0.172 2.11 - 0.50 3.50 - 0.016 0.188 814.04 819.46 813.22105 104 812.05 813.30 812.95 813.86 5.00 6.12 1.99 15 0.31 0.667 2.049 0.325 0.668 0.562 2.99 23 0.013 0.071 - - 1.25 3.50 - 0.173 0.244 814.10 819.80 813.37106 105 811.74 812.99 812.73 813.61 6.09 5.92 3.29 15 0.35 0.939 2.519 0.373 0.894 0.731 3.50 58 0.013 0.203 2.56 - 0.50 3.93 - 0.044 0.247 813.86 819.38 813.20107 106 811.43 812.93 812.62 813.37 6.40 5.87 5.15 18 0.35 1.310 2.956 0.443 1.042 0.874 3.93 60 0.013 0.209 3.50 - 0.50 4.44 - 0.025 0.234 813.61 819.50 813.14108 107 811.06 812.56 812.27 813.07 6.68 5.82 5.70 18 0.45 1.284 2.916 0.440 1.023 0.921 4.44 60 0.013 0.268 3.93 - 0.50 4.51 - 0.033 0.301 813.37 819.50 812.83109 108 810.69 812.44 812.08 812.79 6.93 5.77 7.80 21 0.38 1.729 3.377 0.512 1.182 1.035 4.51 73 0.013 0.275 4.44 - 0.50 4.36 - 0.005 0.280 813.07 819.50 812.71110 109 810.45 812.45 812.00 812.64 7.23 5.72 9.69 24 0.30 2.221 3.817 0.582 1.331 1.113 4.36 47 0.013 0.139 4.51 - 0.50 4.59 - 0.010 0.149 812.79 819.48 812.59111 110 810.15 812.15 811.72 812.43 7.43 5.68 10.27 24 0.33 2.240 3.838 0.584 1.341 1.147 4.59 60 0.013 0.197 4.36 - 0.50 4.99 - 0.015 0.212 812.64 819.47 812.35118 111 809.86 811.86 811.46 812.22 7.67 5.64 11.23 24 0.39 2.251 3.850 0.585 1.347 1.202 4.99 48 0.013 0.186 4.59 - 0.50 5.66 - 0.030 0.216 812.43 819.47 812.05113 112 811.06 812.06 811.79 813.09 5.00 6.12 1.25 12 0.31 0.472 1.732 0.273 0.580 0.473 2.66 66 0.013 0.200 - - 1.25 3.11 - 0.137 0.337 813.43 819.19 812.26114 113 810.86 812.11 811.80 812.98 5.44 6.04 2.45 15 0.30 0.786 2.245 0.350 0.764 0.626 3.11 30 0.013 0.091 2.66 - 0.50 3.56 - 0.020 0.111 813.09 819.21 812.21115 114 810.57 812.07 811.71 812.76 5.61 6.01 4.22 18 0.30 1.187 2.771 0.428 0.955 0.787 3.56 65 0.013 0.195 3.11 - 0.50 3.93 - 0.023 0.218 812.98 817.92 812.26117 115 810.11 811.86 811.45 812.39 5.95 5.95 6.25 21 0.30 1.592 3.204 0.497 1.100 0.922 3.93 120 0.013 0.357 3.56 - 0.50 4.29 - 0.022 0.378 812.76 816.84 812.22117 116 813.61 814.61 814.33 814.33 5.00 6.12 1.09 12 0.31 0.425 1.635 0.260 0.532 0.440 2.57 33 0.013 0.101 - - 1.25 4.29 - 0.128 0.229 814.56 817.46 814.71118 117 809.86 811.86 811.39 812.22 6.50 5.85 8.89 24 0.30 2.072 3.654 0.567 1.253 1.064 4.29 49 0.013 0.147 3.93 - 0.50 5.66 - 0.023 0.170 812.39 817.86 812.01119 118 809.72 812.22 811.72 812.12 7.85 5.61 19.69 30 0.38 3.476 4.776 0.728 1.667 1.505 5.66 12 0.013 0.044 4.99 - 0.50 5.66 - 0.056 0.099 812.22 819.36 812.26120 119 809.27 811.77 811.28 811.28 7.89 5.60 19.66 30 0.38 3.473 4.773 0.728 1.665 1.504 5.66 92 0.013 0.343 5.66 1.00 0.50 - 0.498 0.000 0.841 812.12 819.75 812.12TOTAL LOSSU.S. HGL ELEV.U.S. STR. CROWNOUTLET STRUCTURE COEFFICIENTUPSTREAM STRUCTURE COEFFICIENTEFFLUENT PIPE VELOCITYOUTLET STRUCTURE LOSSUPSTREAM STRUCTURE LOSSU.S. STR. T.R.VELOCITY LENGTH MANNING'S NFRICTION LOSSSLOPE AREAWETTED PERIMETEHYDRAULIC RADIUSFLOW DEPTHPROPOSED STORM SEWER SYSTEM HYDRAULIC GRADE LINE (HGL) CALCULATIONSD.S. STR. U.S. STR.D.S. INV. ELEV.D.S. CROWN ELEV.CRITICAL DEPTH(dc+D)/2 ELEV.STARTING ELEV. Tc ENTITY DATAUPSTREAM MAXIMUM INFLUENT VELOCITYFLOW DIAMETERIntensity Calculation Method:Starting Elevation:Calculation Method:INTENSITYJob InformationDesign ParametersDesign Storm: APPENDIX D PROPOSED CONDITIONS-DETENTION DESIGN 2S Proposed Conditions Routing Diagram for 2015.02458.CE.Drainage. Prepared by American Structurepoint, LLC, Printed 2/12/2021 HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr 10-Year Rainfall=3.83"2015.02458.CE.Drainage. Printed 2/12/2021Prepared by American Structurepoint, LLC Page 2HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Summary for Subcatchment 2S: Proposed Conditions Runoff = 21.79 cfs @ 11.99 hrs, Volume= 1.142 af, Depth> 3.05" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 10-Year Rainfall=3.83" Area (ac) CN Description * 3.730 98 * 0.760 80 4.490 95 Weighted Average 0.760 16.93% Pervious Area 3.730 83.07% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 Direct Entry, Subcatchment 2S: Proposed Conditions Runoff Hydrograph Time (hours) 201918171615141312111098765Flow (cfs)24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Type II 24-hr 10-Year Rainfall=3.83" Runoff Area=4.490 ac Runoff Volume=1.142 af Runoff Depth>3.05" Tc=7.9 min CN=95 21.79 cfs Type II 24-hr 100-Year Rainfall=6.46"2015.02458.CE.Drainage. Printed 2/12/2021Prepared by American Structurepoint, LLC Page 3HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Summary for Subcatchment 2S: Proposed Conditions Runoff = 37.84 cfs @ 11.99 hrs, Volume= 2.040 af, Depth> 5.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr 100-Year Rainfall=6.46" Area (ac) CN Description * 3.730 98 * 0.760 80 4.490 95 Weighted Average 0.760 16.93% Pervious Area 3.730 83.07% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 Direct Entry, Subcatchment 2S: Proposed Conditions Runoff Hydrograph Time (hours) 201918171615141312111098765Flow (cfs)42 40 38 36 34 32 30 28 26 24 22 20 18 16 14 12 10 8 6 4 2 0 Type II 24-hr 100-Year Rainfall=6.46" Runoff Area=4.490 ac Runoff Volume=2.040 af Runoff Depth>5.45" Tc=7.9 min CN=95 37.84 cfs APPENDIX E STORMWATER QUALITY 1S Proposed Conditions - WQ Routing Diagram for 2015.02458.CE.WQ.Calc.2020-11-05 Prepared by American Structurepoint, LLC, Printed 2/12/2021 HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type II 24-hr WQ Event Rainfall=1.00"2015.02458.CE.WQ.Calc.2020-11-05 Printed 2/12/2021Prepared by American Structurepoint, LLC Page 2HydroCAD® 10.00-22 s/n 00818 © 2018 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Proposed Conditions - WQ Runoff = 5.44 cfs @ 11.99 hrs, Volume= 0.277 af, Depth> 0.74" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 5.00-20.00 hrs, dt= 0.05 hrs Type II 24-hr WQ Event Rainfall=1.00" Area (ac) CN Description * 4.490 98 4.490 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 7.9 Direct Entry, Subcatchment 1S: Proposed Conditions - WQ Runoff Hydrograph Time (hours) 201918171615141312111098765Flow (cfs)6 5 4 3 2 1 0 Type II 24-hr WQ Event Rainfall=1.00" Runoff Area=4.490 ac Runoff Volume=0.277 af Runoff Depth>0.74" Tc=7.9 min CN=98 5.44 cfs