HomeMy WebLinkAboutDrainage Report 12-17-19STORMWATER TECHNICAL REPORT
For: CARMEL SELF STORAGE CENTER
Approximately 4.3 acres
147 & 155 West Carmel Drive
Part of SE/4, Section 36, Township 18 North, Range 3 East, Clay Township, Hamilton County, IN
Project W190582
Prepared For:
Jim Adams
Adams French Property, LLC
9000 Keystone Crossing, Suite 660
Indianapolis, IN 46240
Phone: (317) 733-640
jadams@filcoltd.com
Prepared By: Russell L. Webster II, P.E.
Checked By: Brad Schoeff
Certified By: Russell L. Webster II, P.E.
Date:
December 17, 2019
Revised:
10505 North College Avenue | Indianapolis, IN 46280 | .www.weihe.net | (317) 846-6611 | (800) 452-6408 | Fax: (317) 843-0546
Allan H. Weihe, P.E., L.S., - Founder
Prepared For:
Stormwater Technical Report
Carmel Self Storage Center
Carmel, IN
Project #W190582
TABLE OF CONTENTS
1. Project Narrative
• Existing Conditions
• Proposed Conditions
• Water Quality
• Location Maps
2. Pre-Developed Calculations
• Basin Map
3. Post-Developed Calculations
• Basin Map
• Supporting Calculations
• Drainage Model
4. Water Quality Calculations
• Location Map
• Supporting Calculations
Carmel Self Storage Center Drainage Report Weihe Engineers, INC.
12/17/2019
Report Prepared For:
Carmel Self Storage Center
Carmel, IN
Project #w190582
Project Narrative and Stormwater Design:
Carmel Self Storage is proposing to demolish and reconstruct their existing building on their site
on West Carmel Drive. The proposed building will be a better match for the current architectural
requirements in the area and will bring the new building closer to the right-of-way.
The stormwater design for this project is challenging. The site is 95% impervious today and has
been since approximately 1980 when the site was built-out fully. The outlet pipe for the site is
one 12” storm sewer which handles onsite flows and underdrains from onsite and offsite. Said
outlet pipe is less than 3’ deep. Because the site is fully built-out, there is minimal room to
consider detention and water quality. However, disturbing more than 0.25 acres triggers these
requirements per the UDO.
The owner is removing and replacing the north office and storage building but will not be
removing any self-storage buildings. Most of the southern part of the site containing these self-
storage buildings sheet flow to the west towards the existing outlet pipe. The owner understands
there is not adequate elevation to rip out pavement and install underground detention, nor will
they remove any of the existing storage buildings to provide detention.
However, the owner will remove asphalt to accommodate as much detention as the western edge
of the site will allow. This area will not provide enough detention to satisfy the UDO. The
owners’ team has advised to remove asphalt along the west side of the property but will leave
enough asphalt for the Carmel fire truck to maneuver on the site. We believe this swale will
accommodate approximately 20-25% of what would be required to meet the release rate
requirements for the development based on the UDO.
The owner is willing to provide water quality for the entire site by using an Aqua Swirl
Xcelerator. The owner has also selected a dry swale option for detention to incorporate green
infrastructure into the redevelopment.
Site Location:
Approximately 4.3 acres located at 147 & 155 West Carmel Drive
Part of SE/4, Section 36, Township 18 North, Range 3 East, Clay Township, Hamilton County, IN
Floodzone:
The site does not lie in a Special Flood Hazard Area as established by the Federal Emergency
Management Agency - National Flood Insurance Program, when plotted by scale on Flood
Insurance Rate Map #18057C0209 G, dated November 19, 2014.
Carmel Self Storage Center Drainage Report Weihe Engineers, INC.
12/17/2019
Existing Conditions:
The site is 95% buildings or hard surface. There are a series of self-storage buildings on the
southern half of the site. The site topography was generated from survey performed by Weihe
Engineers. Refer to Section 2 for the existing site map.
Proposed Conditions:
As stated above, the proposed condition will provide a dry swale to manage onsite runoff. The
onsite runoff is 95% hard surface and has a curve number of 98. A Tc was calculated using the
TR-55 method. A 24-hour type 2 simulation was used to determine onsite runoff volumes. Refer
to Sections 3 and 4 for design information and calculations.
The following is a summary of the onsite runoff, both released from the dry swale and the
remainder of the site:
Pond Release Rate Remainder
10-year 4.08 cfs 11.01 cfs
100-year 4.89 cfs 18.68 cfs
Water Quality Measures:
The proposed redevelopment will include water quality measures for the 3.86 acres contributing
to the existing outlet. The proposal includes an Aqua Swirl XC-7 mechanical water quality unit.
Refer to Section 4 of this report for calculations and figures.
LOCATION MAP – NO SCALE
DENOTES PROJECT LOCATION
6
Custom Soil Resource Report
Soil Map
4423630442366044236904423720442375044237804423810442384044236304423660442369044237204423750442378044238104423840574170 574200 574230 574260 574290 574320 574350 574380 574410 574440 574470 574500
574170 574200 574230 574260 574290 574320 574350 574380 574410 574440 574470 574500
39° 57' 41'' N 86° 7' 54'' W39° 57' 41'' N86° 7' 39'' W39° 57' 33'' N
86° 7' 54'' W39° 57' 33'' N
86° 7' 39'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 16N WGS84
0 50 100 200 300
Feet
0 20 40 80 120
Meters
Map Scale: 1:1,650 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
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 20, Sep 16, 2019
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.
Custom Soil Resource Report
7
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
UbaA Urban land-Brookston complex,
0 to 2 percent slopes
2.2 43.8%
UcfA Urban land-Crosby silt loam
complex, fine-loamy subsoil,
0 to 2 percent slopes
1.2 23.4%
UkbB2 Urban land-Miami silt loam
complex, 2 to 6 percent
slopes, eroded
1.4 27.7%
YbvA Brookston silty clay loam-Urban
land complex, 0 to 2 percent
slopes
0.1 2.5%
YmsB2 Miami silt loam-Urban land
complex, 2 to 6 percent
slopes, eroded
0.1 2.5%
Totals for Area of Interest 5.1 100.0%
Map Unit Descriptions
The map units delineated on the detailed soil maps in a soil survey represent the
soils or miscellaneous areas in the survey area. The map unit descriptions, along
with the maps, can be used to determine the composition and properties of a unit.
A map unit delineation on a soil map represents an area dominated by one or more
major kinds of soil or miscellaneous areas. A map unit is identified and named
according to the taxonomic classification of the dominant soils. Within a taxonomic
class there are precisely defined limits for the properties of the soils. On the
landscape, however, the soils are natural phenomena, and they have the
characteristic variability of all natural phenomena. Thus, the range of some
observed properties may extend beyond the limits defined for a taxonomic class.
Areas of soils of a single taxonomic class rarely, if ever, can be mapped without
including areas of other taxonomic classes. Consequently, every map unit is made
up of the soils or miscellaneous areas for which it is named and some minor
components that belong to taxonomic classes other than those of the major soils.
Most minor soils have properties similar to those of the dominant soil or soils in the
map unit, and thus they do not affect use and management. These are called
noncontrasting, or similar, components. They may or may not be mentioned in a
particular map unit description. Other minor components, however, have properties
and behavioral characteristics divergent enough to affect use or to require different
management. These are called contrasting, or dissimilar, components. They
generally are in small areas and could not be mapped separately because of the
scale used. Some small areas of strongly contrasting soils or miscellaneous areas
are identified by a special symbol on the maps. If included in the database for a
given area, the contrasting minor components are identified in the map unit
descriptions along with some characteristics of each. A few areas of minor
Custom Soil Resource Report
8
components may not have been observed, and consequently they are not
mentioned in the descriptions, especially where the pattern was so complex that it
was impractical to make enough observations to identify all the soils and
miscellaneous areas on the landscape.
The presence of minor components in a map unit in no way diminishes the
usefulness or accuracy of the data. The objective of mapping is not to delineate
pure taxonomic classes but rather to separate the landscape into landforms or
landform segments that have similar use and management requirements. The
delineation of such segments on the map provides sufficient information for the
development of resource plans. If intensive use of small areas is planned, however,
onsite investigation is needed to define and locate the soils and miscellaneous
areas.
An identifying symbol precedes the map unit name in the map unit descriptions.
Each description includes general facts about the unit and gives important soil
properties and qualities.
Soils that have profiles that are almost alike make up a soil series. Except for
differences in texture of the surface layer, all the soils of a series have major
horizons that are similar in composition, thickness, and arrangement.
Soils of one series can differ in texture of the surface layer, slope, stoniness,
salinity, degree of erosion, and other characteristics that affect their use. On the
basis of such differences, a soil series is divided into soil phases. Most of the areas
shown on the detailed soil maps are phases of soil series. The name of a soil phase
commonly indicates a feature that affects use or management. For example, Alpha
silt loam, 0 to 2 percent slopes, is a phase of the Alpha series.
Some map units are made up of two or more major soils or miscellaneous areas.
These map units are complexes, associations, or undifferentiated groups.
A complex consists of two or more soils or miscellaneous areas in such an intricate
pattern or in such small areas that they cannot be shown separately on the maps.
The pattern and proportion of the soils or miscellaneous areas are somewhat similar
in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example.
An association is made up of two or more geographically associated soils or
miscellaneous areas that are shown as one unit on the maps. Because of present
or anticipated uses of the map units in the survey area, it was not considered
practical or necessary to map the soils or miscellaneous areas separately. The
pattern and relative proportion of the soils or miscellaneous areas are somewhat
similar. Alpha-Beta association, 0 to 2 percent slopes, is an example.
An undifferentiated group is made up of two or more soils or miscellaneous areas
that could be mapped individually but are mapped as one unit because similar
interpretations can be made for use and management. The pattern and proportion
of the soils or miscellaneous areas in a mapped area are not uniform. An area can
be made up of only one of the major soils or miscellaneous areas, or it can be made
up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example.
Some surveys include miscellaneous areas. Such areas have little or no soil
material and support little or no vegetation. Rock outcrop is an example.
Custom Soil Resource Report
9
Hamilton County, Indiana
UbaA—Urban land-Brookston complex, 0 to 2 percent slopes
Map Unit Setting
National map unit symbol: 2y48h
Elevation: 640 to 930 feet
Mean annual precipitation: 36 to 42 inches
Mean annual air temperature: 49 to 53 degrees F
Frost-free period: 175 to 185 days
Farmland classification: Not prime farmland
Map Unit Composition
Urban land: 60 percent
Brookston, drained, and similar soils: 40 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Urban Land
Setting
Landform: Till plains
Interpretive groups
Land capability classification (irrigated): None specified
Other vegetative classification: Trees/Timber (Woody Vegetation)
Hydric soil rating: Unranked
Description of Brookston, Drained
Setting
Landform: Depressions on till plains
Landform position (two-dimensional): Footslope
Down-slope shape: Concave
Across-slope shape: Linear
Parent material: Loess over loamy till
Typical profile
H1 - 0 to 14 inches: silty clay loam
H2 - 14 to 54 inches: clay loam
H3 - 54 to 60 inches: loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Poorly drained
Runoff class: Negligible
Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20
to 0.60 in/hr)
Depth to water table: About 0 to 12 inches
Frequency of flooding: None
Frequency of ponding: Frequent
Calcium carbonate, maximum in profile: 40 percent
Available water storage in profile: High (about 9.7 inches)
Interpretive groups
Land capability classification (irrigated): None specified
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10
Land capability classification (nonirrigated): 2w
Hydrologic Soil Group: B/D
Other vegetative classification: Mixed/Transitional (Mixed Native Vegetation)
Hydric soil rating: Yes
UcfA—Urban land-Crosby silt loam complex, fine-loamy subsoil, 0 to 2
percent slopes
Map Unit Setting
National map unit symbol: 2y47p
Elevation: 600 to 1,260 feet
Mean annual precipitation: 36 to 46 inches
Mean annual air temperature: 48 to 55 degrees F
Frost-free period: 145 to 180 days
Farmland classification: Not prime farmland
Map Unit Composition
Urban land: 60 percent
Crosby and similar soils: 35 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Crosby
Setting
Landform: Recessionial moraines, water-lain moraines, ground moraines
Landform position (two-dimensional): Summit, backslope, footslope
Landform position (three-dimensional): Interfluve, rise
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Silty material or loess over loamy till
Typical profile
Ap - 0 to 8 inches: silt loam
BE - 8 to 11 inches: silt loam
Bt - 11 to 14 inches: silt loam
2Bt - 14 to 28 inches: silty clay
2BCt - 28 to 36 inches: loam
2Cd - 36 to 79 inches: loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: 24 to 40 inches to densic material
Natural drainage class: Somewhat poorly drained
Runoff class: Medium
Capacity of the most limiting layer to transmit water (Ksat): Low to moderately
high (0.01 to 0.20 in/hr)
Depth to water table: About 6 to 24 inches
Frequency of flooding: None
Frequency of ponding: None
Custom Soil Resource Report
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Calcium carbonate, maximum in profile: 50 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Available water storage in profile: Low (about 5.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2w
Hydrologic Soil Group: C/D
Hydric soil rating: No
Minor Components
Treaty, drained
Percent of map unit: 5 percent
Landform: Depressions, swales, water-lain moraines
Landform position (two-dimensional): Toeslope, footslope
Landform position (three-dimensional): Base slope, dip
Down-slope shape: Linear
Across-slope shape: Concave
Hydric soil rating: Yes
UkbB2—Urban land-Miami silt loam complex, 2 to 6 percent slopes,
eroded
Map Unit Setting
National map unit symbol: 2y47f
Elevation: 180 to 1,040 feet
Mean annual precipitation: 37 to 46 inches
Mean annual air temperature: 48 to 55 degrees F
Frost-free period: 145 to 180 days
Farmland classification: Not prime farmland
Map Unit Composition
Urban land: 60 percent
Miami, eroded, and similar soils: 30 percent
Minor components: 10 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Miami, Eroded
Setting
Landform: Till plains
Landform position (two-dimensional): Backslope, footslope, shoulder
Landform position (three-dimensional): Side slope
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Loess over loamy till
Typical profile
Ap - 0 to 8 inches: silt loam
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Bt - 8 to 13 inches: silty clay loam
2Bt - 13 to 31 inches: clay loam
2BCt - 31 to 36 inches: loam
2Cd - 36 to 79 inches: loam
Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: 24 to 40 inches to densic material
Natural drainage class: Moderately well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat): Low to moderately
high (0.01 to 0.20 in/hr)
Depth to water table: About 24 to 36 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 45 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Available water storage in profile: Low (about 5.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: C
Other vegetative classification: Trees/Timber (Woody Vegetation)
Hydric soil rating: No
Minor Components
Crosby
Percent of map unit: 5 percent
Landform: Till plains
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down-slope shape: Linear
Across-slope shape: Convex
Other vegetative classification: Trees/Timber (Woody Vegetation)
Hydric soil rating: No
Treaty
Percent of map unit: 3 percent
Landform: Till plains
Landform position (two-dimensional): Toeslope
Landform position (three-dimensional): Dip
Down-slope shape: Concave
Across-slope shape: Concave
Other vegetative classification: Mixed/Transitional (Mixed Native Vegetation)
Hydric soil rating: Yes
Williamstown
Percent of map unit: 2 percent
Landform: Till plains
Landform position (two-dimensional): Backslope, shoulder
Landform position (three-dimensional): Side slope
Down-slope shape: Convex
Across-slope shape: Linear
Other vegetative classification: Trees/Timber (Woody Vegetation)
Custom Soil Resource Report
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Hydric soil rating: No
YbvA—Brookston silty clay loam-Urban land complex, 0 to 2 percent
slopes
Map Unit Setting
National map unit symbol: 2w57n
Elevation: 600 to 1,260 feet
Mean annual precipitation: 37 to 46 inches
Mean annual air temperature: 48 to 55 degrees F
Frost-free period: 145 to 180 days
Farmland classification: Not prime farmland
Map Unit Composition
Brookston and similar soils: 65 percent
Urban land: 30 percent
Minor components: 5 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Brookston
Setting
Landform: Depressions, till plains
Landform position (two-dimensional): Toeslope
Landform position (three-dimensional): Dip
Down-slope shape: Concave, linear
Across-slope shape: Concave
Parent material: Loess over loamy till
Typical profile
Ap - 0 to 16 inches: silty clay loam
Btg1 - 16 to 32 inches: silty clay loam
Btg2 - 32 to 44 inches: loam
C - 44 to 60 inches: loam
Properties and qualities
Slope: 0 to 2 percent
Depth to restrictive feature: More than 80 inches
Natural drainage class: Poorly drained
Runoff class: Negligible
Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20
to 0.60 in/hr)
Depth to water table: About 0 to 12 inches
Frequency of flooding: None
Frequency of ponding: Frequent
Calcium carbonate, maximum in profile: 40 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Available water storage in profile: Moderate (about 8.9 inches)
Custom Soil Resource Report
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Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2w
Hydrologic Soil Group: B/D
Hydric soil rating: Yes
Minor Components
Crosby
Percent of map unit: 5 percent
Landform: Till plains
Landform position (two-dimensional): Footslope, summit
Landform position (three-dimensional): Talf
Down-slope shape: Concave
Across-slope shape: Linear
Hydric soil rating: No
YmsB2—Miami silt loam-Urban land complex, 2 to 6 percent slopes,
eroded
Map Unit Setting
National map unit symbol: 2w586
Elevation: 180 to 1,040 feet
Mean annual precipitation: 37 to 46 inches
Mean annual air temperature: 48 to 55 degrees F
Frost-free period: 145 to 180 days
Farmland classification: Not prime farmland
Map Unit Composition
Miami, eroded, and similar soils: 50 percent
Urban land: 35 percent
Minor components: 15 percent
Estimates are based on observations, descriptions, and transects of the mapunit.
Description of Miami, Eroded
Setting
Landform: Till plains
Landform position (two-dimensional): Backslope, footslope, shoulder
Landform position (three-dimensional): Side slope
Down-slope shape: Convex
Across-slope shape: Linear
Parent material: Loess over loamy till
Typical profile
Ap - 0 to 8 inches: silt loam
Bt - 8 to 13 inches: silty clay loam
2Bt - 13 to 31 inches: clay loam
2BCt - 31 to 36 inches: loam
2Cd - 36 to 79 inches: loam
Custom Soil Resource Report
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Properties and qualities
Slope: 2 to 6 percent
Depth to restrictive feature: 24 to 40 inches to densic material
Natural drainage class: Moderately well drained
Runoff class: High
Capacity of the most limiting layer to transmit water (Ksat): Low to moderately
high (0.01 to 0.20 in/hr)
Depth to water table: About 24 to 36 inches
Frequency of flooding: None
Frequency of ponding: None
Calcium carbonate, maximum in profile: 45 percent
Salinity, maximum in profile: Nonsaline to very slightly saline (0.0 to 2.0
mmhos/cm)
Available water storage in profile: Low (about 5.8 inches)
Interpretive groups
Land capability classification (irrigated): None specified
Land capability classification (nonirrigated): 2e
Hydrologic Soil Group: C
Other vegetative classification: Trees/Timber (Woody Vegetation)
Hydric soil rating: No
Minor Components
Crosby
Percent of map unit: 5 percent
Landform: Till plains
Landform position (two-dimensional): Summit
Landform position (three-dimensional): Interfluve
Down-slope shape: Linear
Across-slope shape: Convex
Other vegetative classification: Trees/Timber (Woody Vegetation)
Hydric soil rating: No
Williamstown
Percent of map unit: 5 percent
Landform: Till plains
Landform position (two-dimensional): Backslope, shoulder
Landform position (three-dimensional): Side slope
Down-slope shape: Convex
Across-slope shape: Linear
Other vegetative classification: Trees/Timber (Woody Vegetation)
Hydric soil rating: No
Treaty
Percent of map unit: 5 percent
Landform: Till plains
Landform position (two-dimensional): Toeslope
Landform position (three-dimensional): Dip
Down-slope shape: Concave
Across-slope shape: Concave
Other vegetative classification: Mixed/Transitional (Mixed Native Vegetation)
Hydric soil rating: Yes
Custom Soil Resource Report
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20
Custom Soil Resource Report
Map—Hydrologic Soil Group
4423630442366044236904423720442375044237804423810442384044236304423660442369044237204423750442378044238104423840574170 574200 574230 574260 574290 574320 574350 574380 574410 574440 574470 574500
574170 574200 574230 574260 574290 574320 574350 574380 574410 574440 574470 574500
39° 57' 41'' N 86° 7' 54'' W39° 57' 41'' N86° 7' 39'' W39° 57' 33'' N
86° 7' 54'' W39° 57' 33'' N
86° 7' 39'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 16N WGS84
0 50 100 200 300
Feet
0 20 40 80 120
Meters
Map Scale: 1:1,650 if printed on A landscape (11" x 8.5") 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 20, Sep 16, 2019
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.
Custom Soil Resource Report
21
Table—Hydrologic Soil Group
Map unit symbol Map unit name Rating Acres in AOI Percent of AOI
UbaA Urban land-Brookston
complex, 0 to 2
percent slopes
2.2 43.8%
UcfA Urban land-Crosby silt
loam complex, fine-
loamy subsoil, 0 to 2
percent slopes
1.2 23.4%
UkbB2 Urban land-Miami silt
loam complex, 2 to 6
percent slopes, eroded
1.4 27.7%
YbvA Brookston silty clay
loam-Urban land
complex, 0 to 2
percent slopes
B/D 0.1 2.5%
YmsB2 Miami silt loam-Urban
land complex, 2 to 6
percent slopes, eroded
C 0.1 2.5%
Totals for Area of Interest 5.1 100.0%
Rating Options—Hydrologic Soil Group
Aggregation Method: Dominant Condition
Component Percent Cutoff: None Specified
Tie-break Rule: Higher
Custom Soil Resource Report
22
Project:
Date:
Source: 210‐VI‐TR‐55 Second Ed, June 1986 Job No:
Checked By:
Prepared By:
BASIN:
Sheet Flow (Applicable to Tc only)Segment ID
1. Surface Description ………………… Imperv.
2. Manning's roughness coeff., n ……….. 0.011
3. Flow length, L (total L < 300 ft) ……….ft 30
4. Two-yr 24-hr rainfall, P2 ……………..in 2.64
5. Land slope, s ……………………… ft/ft 0.01
6. Tt = 0.007 (nL)0.8 Compute Tt …hr 0.0112 = 0.0112
P2
0.5 s0.4
Shallow Concentrated Flow Segment ID Gutter
7. Surface Description (paved or unpaved) … Paved
8. Flow length, L ………………………. ft 900
9. Watercourse slope, s ……………….. ft/ft 0.005
10. Average velocity, V …………………. ft/s 2.03
11. Tt = L Compute Tt …hr 0.1230 = 0.1230
3600 V
Channel Flow Segment ID
12. Cross sectional flow area, a …………..ft2
13. Wetted Perimeter, pw …………………ft
14. Hydraulic radius, r = a/pw Compute r … ft
15. Channel slope, s ……………………. ft/ft
16. Manning's roughness coeff., n …………
17. V = (1.49 r2/3 s1/2) / n Compute V … ft/s
18. Flow length, L ………………………. ft
19. Tt = L Compute Tt …hr = 0.0000
3600 V
20. Watershed or subarea Tc or Tt (add Tt in steps 6, 11, and 19) ………………………hr 0.1342
min 8.05
Time of Concentration Carmel Self Storage
December 16, 2019
w190582
Tc
BS
RLW
1
2
3
Watershed Model SchematicHydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Project: w190582 proposed basins.gpw Tuesday, 12 / 17 / 2019
Hyd.Origin Description
Legend
1 SCS Runoff PR-South
2 Reservoir PR-South to Swale
3 SCS Runoff PR-North
Hydrograph Return Period Recap
Hyd. Hydrograph Inflow Peak Outflow (cfs) Hydrograph
No. type hyd(s)Description
(origin) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
1 SCS Runoff ------ ------- 4.910 ------- ------- 7.133 ------- ------- 12.10 PR-South
2 Reservoir 1 ------- 3.513 ------- ------- 4.083 ------- ------- 4.888 PR-South to Swale
3 SCS Runoff ------ ------- 7.577 ------- ------- 11.01 ------- ------- 18.68 PR-North
Proj. file: w190582 proposed basins.gpw Tuesday, 12 / 17 / 2019
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hydrograph Summary Report
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 4.910 3 717 12,486 ------ ------ ------ PR-South
2 Reservoir 3.513 3 723 12,486 1 826.74 1,034 PR-South to Swale
3 SCS Runoff 7.577 3 717 19,267 ------ ------ ------ PR-North
w190582 proposed basins.gpw Return Period: 2 Year Tuesday, 12 / 17 / 2019
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 1
PR-South
Hydrograph type = SCS Runoff Peak discharge = 4.910 cfs
Storm frequency = 2 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 12,486 cuft
Drainage area = 1.510 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 8.00 min
Total precip. = 2.66 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260
Q (cfs)
0.00 0.00
1.00 1.00
2.00 2.00
3.00 3.00
4.00 4.00
5.00 5.00
Q (cfs)
Time (min)
PR-South
Hyd. No. 1 -- 2 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 2
PR-South to Swale
Hydrograph type = Reservoir Peak discharge = 3.513 cfs
Storm frequency = 2 yrs Time to peak = 723 min
Time interval = 3 min Hyd. volume = 12,486 cuft
Inflow hyd. No. = 1 - PR-South Max. Elevation = 826.74 ft
Reservoir name = Dry Swale Max. Storage = 1,034 cuft
Storage Indication method used.
0 180 360 540 720 900 1080 1260 1440 1620
Q (cfs)
0.00 0.00
1.00 1.00
2.00 2.00
3.00 3.00
4.00 4.00
5.00 5.00
Q (cfs)
Time (min)
PR-South to Swale
Hyd. No. 2 -- 2 Year
Hyd No. 2 Hyd No. 1 Total storage used = 1,034 cuft
Pond Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Pond No. 1 - Dry Swale
Pond Data
Contours -User-defined contour areas. Conic method used for volume calculation. Begining Elevation = 824.50 ft
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft)
0.00 824.50 00 0 0
0.50 825.00 100 17 17
1.50 826.00 600 315 332
2.50 827.00 1,450 994 1,326
3.50 828.00 4,300 2,749 4,074
4.50 829.00 5,000 4,645 8,720
Culvert / Orifice Structures Weir Structures
[A] [B] [C] [PrfRsr] [A] [B] [C] [D]
Rise (in)= 10.00 0.00 0.00 0.00
Span (in)= 10.00 0.00 0.00 0.00
No. Barrels = 1 000
Invert El. (ft)= 824.50 0.00 0.00 0.00
Length (ft)= 6.00 0.00 0.00 0.00
Slope (%)= 1.00 0.00 0.00 n/a
N-Value = .013 .013 .013 n/a
Orifice Coeff.= 0.60 0.60 0.60 0.60
Multi-Stage = n/a NoNoNo
Crest Len (ft)= 0.00 0.00 0.00 0.00
Crest El. (ft)= 0.00 0.00 0.00 0.00
Weir Coeff.= 3.33 3.33 3.33 3.33
Weir Type = --- --- --- ---
Multi-Stage = No No No No
Exfil.(in/hr)= 0.000 (by Wet area)
TW Elev. (ft)= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
0.00 1.00 2.00 3.00 4.00 5.00 6.00
Stage (ft)
0.00 824.50
1.00 825.50
2.00 826.50
3.00 827.50
4.00 828.50
5.00 829.50
Elev (ft)
Discharge (cfs)
Stage / Discharge
Total Q
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 3
PR-North
Hydrograph type = SCS Runoff Peak discharge = 7.577 cfs
Storm frequency = 2 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 19,267 cuft
Drainage area = 2.330 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 7.00 min
Total precip. = 2.66 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260
Q (cfs)
0.00 0.00
2.00 2.00
4.00 4.00
6.00 6.00
8.00 8.00
Q (cfs)
Time (min)
PR-North
Hyd. No. 3 -- 2 Year
Hyd No. 3
Hydrograph Summary Report
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 7.133 3 717 18,476 ------ ------ ------ PR-South
2 Reservoir 4.083 3 723 18,476 1 827.35 2,245 PR-South to Swale
3 SCS Runoff 11.01 3 717 28,510 ------ ------ ------ PR-North
w190582 proposed basins.gpw Return Period: 10 Year Tuesday, 12 / 17 / 2019
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 1
PR-South
Hydrograph type = SCS Runoff Peak discharge = 7.133 cfs
Storm frequency = 10 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 18,476 cuft
Drainage area = 1.510 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 8.00 min
Total precip. = 3.83 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260
Q (cfs)
0.00 0.00
2.00 2.00
4.00 4.00
6.00 6.00
8.00 8.00
Q (cfs)
Time (min)
PR-South
Hyd. No. 1 -- 10 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 2
PR-South to Swale
Hydrograph type = Reservoir Peak discharge = 4.083 cfs
Storm frequency = 10 yrs Time to peak = 723 min
Time interval = 3 min Hyd. volume = 18,476 cuft
Inflow hyd. No. = 1 - PR-South Max. Elevation = 827.35 ft
Reservoir name = Dry Swale Max. Storage = 2,245 cuft
Storage Indication method used.
0 180 360 540 720 900 1080 1260 1440 1620
Q (cfs)
0.00 0.00
2.00 2.00
4.00 4.00
6.00 6.00
8.00 8.00
Q (cfs)
Time (min)
PR-South to Swale
Hyd. No. 2 -- 10 Year
Hyd No. 2 Hyd No. 1 Total storage used = 2,245 cuft
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 3
PR-North
Hydrograph type = SCS Runoff Peak discharge = 11.01 cfs
Storm frequency = 10 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 28,510 cuft
Drainage area = 2.330 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 7.00 min
Total precip. = 3.83 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260
Q (cfs)
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
Q (cfs)
Time (min)
PR-North
Hyd. No. 3 -- 10 Year
Hyd No. 3
Hydrograph Summary Report
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 12.10 3 717 31,970 ------ ------ ------ PR-South
2 Reservoir 4.888 3 726 31,970 1 828.40 5,852 PR-South to Swale
3 SCS Runoff 18.68 3 717 49,331 ------ ------ ------ PR-North
w190582 proposed basins.gpw Return Period: 100 Year Tuesday, 12 / 17 / 2019
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 1
PR-South
Hydrograph type = SCS Runoff Peak discharge = 12.10 cfs
Storm frequency = 100 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 31,970 cuft
Drainage area = 1.510 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 8.00 min
Total precip. = 6.46 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260
Q (cfs)
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
Q (cfs)
Time (min)
PR-South
Hyd. No. 1 -- 100 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 2
PR-South to Swale
Hydrograph type = Reservoir Peak discharge = 4.888 cfs
Storm frequency = 100 yrs Time to peak = 726 min
Time interval = 3 min Hyd. volume = 31,970 cuft
Inflow hyd. No. = 1 - PR-South Max. Elevation = 828.40 ft
Reservoir name = Dry Swale Max. Storage = 5,852 cuft
Storage Indication method used.
0 180 360 540 720 900 1080 1260 1440 1620
Q (cfs)
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
Q (cfs)
Time (min)
PR-South to Swale
Hyd. No. 2 -- 100 Year
Hyd No. 2 Hyd No. 1 Total storage used = 5,852 cuft
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Tuesday, 12 / 17 / 2019
Hyd. No. 3
PR-North
Hydrograph type = SCS Runoff Peak discharge = 18.68 cfs
Storm frequency = 100 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 49,331 cuft
Drainage area = 2.330 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 7.00 min
Total precip. = 6.46 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260
Q (cfs)
0.00 0.00
3.00 3.00
6.00 6.00
9.00 9.00
12.00 12.00
15.00 15.00
18.00 18.00
21.00 21.00
Q (cfs)
Time (min)
PR-North
Hyd. No. 3 -- 100 Year
Hyd No. 3
Emergency Overflow Calculations Project:
Date:
Job No:
Checked By:
Prepared By:
Peak Inflow 12.10 cfs
Peak Inflow (125%) 15.13 cfs
Cw (Coefficient of Weir) 3.33
h (Flow depth over Weir)0.55 ft
Width of Weir 11.14 ft
L = Q/ (Cs * H ^ (3/2))Free Discharge Suppressed
December 17, 2019
Carmel Self Storage
w190582
SSR
RLW
1 Watershed Model SchematicHydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Project: w190582 wq model 2019.12.06.gpw Monday, 12 / 16 / 2019
Hyd.Origin Description
Legend
1 SCS Runoff WQ-1
Hydrograph Return Period Recap
Hyd. Hydrograph Inflow Peak Outflow (cfs) Hydrograph
No. type hyd(s)Description
(origin) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
1 SCS Runoff ------ 4.351 ------- ------- ------- ------- ------- ------- ------- WQ-1
Proj. file: w190582 wq model 2019.12.06.gpw Monday, 12 / 16 / 2019
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hydrograph Summary Report
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 4.351 3 717 10,362 ------ ------ ------ WQ-1
w190582 wq model 2019.12.06.gpw Return Period: 1 Year Monday, 12 / 16 / 2019
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2019.2 Monday, 12 / 16 / 2019
Hyd. No. 1
WQ-1
Hydrograph type = SCS Runoff Peak discharge = 4.351 cfs
Storm frequency = 1 yrs Time to peak = 717 min
Time interval = 3 min Hyd. volume = 10,362 cuft
Drainage area = 3.850 ac Curve number = 98
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 8.00 min
Total precip. = 1.00 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
0 180 360 540 720 900 1080 1260 1440
Q (cfs)
0.00 0.00
1.00 1.00
2.00 2.00
3.00 3.00
4.00 4.00
5.00 5.00
Q (cfs)
Time (min)
WQ-1
Hyd. No. 1 -- 1 Year
Hyd No. 1
Plan View
SCALE 1:40
Elevation View
SCALE 1:40
Projected View
SCALE 1:70
2733 Kanasita Drive, Suite 111, Chattanooga, TN 37343
Phone (888) 344-9044 Fax (423) 826-2112
www.aquashieldinc.com
Structure #:
Drawn By:
Scale:
Date:
OFlores
6/26/2019
Rvwed Rvw. Date
U.S. Patent No. 6524473 and other Patent Pending
Aqua-Swirl XCelerator
Aqua-Swirl Stormwater Treatment System
Standard Detail
As Shown
el. Varies
Inlet/Outlet Invert
el. Varies
el. Varies
Grade (Rim) el. Varies
XC-7 CCW STD
XC-7 STD
Aqua-Swirl Polymer Coated Steel (PCS)
Stormwater Treatment System
12 in
[305 mm]
Manhole Frame & Cover Detail
For Non-Traffic Areas Only
NTS
4 in
[1219 mm] Min.
Gravel Backfill
Concrete
Wrap Compressible Expansion
Joint Material to a minimum
1/2-inch [13 mm] thickness around
top of riser to allow transfer of
inadvertent loading from
manhole cover to concrete slab.
Riser
Soil
Cover
Frame
1/2 in
[13 mm]
1/2 in
[13 mm]
Place small amount of
concrete [3,000 psi [20
MPa] (min)] to support
and level manhole frame.
DO NOT allow manhole
frame to rest upon riser.
Backfill (90%
Proctor Density)
8 in
[203 mm]
4 1/2 in
[114 mm]
Unless other traffic barriers are present,
bollards shall be placed around access riser(s)
in non-traffic areas to prevent inadvertent
loading by maintenance vehicles.
Manhole Frame & Cover Detail
For Traffic Loading Areas
NTS
Cover
Frame
48 in
[1219 mm] Min.
Backfill (90%
Proctor Density)
3,000 psi [20 MPa]
(min) Concrete
#4 [13 mm] Rebar
@ 6 in [152 mm]
Each Way
30 in [762 mm]
Riser
1/2 in
[13 mm]
4 1/2 in
[114 mm]
14 in
[356 mm]
1/2 in [13 mm] Thick
Expansion Joint
Material
If traffic loading (HS-25) is required or anticipated, a 4-foot [1.22 m]
diameter, 14-inch [356 mm] thick reinforced concrete pad must be
placed over the Stormwater Treatment System Riser to support and
level the manhole frame, as shown. The top of riser pipe must be
wrapped with compressible expansion joint material to a minimum
1/2-inch [13 mm] thickness to allow transfer of wheel loads from
manhole cover to concrete slab. Manhole cover shall bear on concrete
slab and not on riser pipe. The concrete slab shall have a minimum
strength of 3,000 psi [20 MPa] and be reinforced with #4 [13 mm]
reinforcing steel as shown. Minimum cover over reinforcing steel shall
be 1-inch [25 mm]. Top of manhole cover and concrete slab shall be
level with finish grade.
Please see accompanied Aqua-Swirl specification notes. See Site
Plan for actual System orientation. Approximate dry (pick) weight:
3800 lbs [1700 kg].
Backfill shall extend at least 18
inches [457 mm] outward from
Swirl Concentrator and for the
full height of the Swirl
Concentrator (including riser)
extending laterally to
undisturbed soils. (See MH
Detail Below)
Backfill
Bedding
Undisturbed soil
18 in
[457 mm]
6 in
[152 mm]
1
1
As an alternative, 42 in [1067 mm] diameter, HS-20/25
rated precast concrete rings may be substituted. 14 in
[356 mm] thickness must be maintained.
XC-7 inlet/outlet pipe size ranges up to 42 in [1067 mm].
XC-7 chamber height may vary up to 151 in [3835 mm],
depending on inlet/outlet pipe size.
Orientation may vary from a minimum of 90 to a
maximum of 180. Clockwise or counterclockwise
orientation as needed.
2
3
3
2
96 in
[2438 mm]
96 in
[2438 mm]
P42 in
[P1067 mm]
P42 in
[P1067 mm]
2
Octagonal Base Plate
P84 in
[P2137 mm]
85 in
[2159 mm]
151 in
[3835 mm]
Varies Varies
5
[127 mm]
MH Frame
P30 in
[P762 mm]
Band Coupler
by Manufacturer.
(as needed)Riser
Manhole Frame and
Cover by Manufacturer.
(See Details)
Rim elevations to
match finish grade.
Pipe coupling
by Contractor.
12 in [305 mm]
long Stub-out
by Manufacturer.
4
4
Pipe coupling
by Contractor.
12 in [305 mm]
long Stub-out
by Manufacturer.
180P84 in
[P2134 mm]
Optional inlet
orientations available
(See note 4)
City of Indianapolis Stormwater Quality Unit (SQU)
Selection Guide
Pg. 2 10/01/2019
Version 14.0
Manufactured
SQU SQU System Model
Max
Treatment
Flow
(cfs)
Max 10-yr
On-Line
Flow Rate
(cfs)
Cleanout
Depth
(Inches)
4-ft 1.12 2.95 9
6-ft 2.52 6.63 12
8-ft 4.49 11.81 15
10-ft 7.00 18.40 18
Hydro
International
Downstream
Defender1
12 ft 10.08 26.51 21
3-ft 0.85 1.84 9
4-ft 1.5 3.24 9
5-ft 2.35 5.08 9
6-ft 3.38 7.30 9
7-ft 4.60 9.94 9
Hydro
International
First Defense
High Capacity1
8-ft 6.00 12.96 9
HS-3 0.50 1.00 6
HS-4 0.88 1.76 6
HS-5 1.37 2.74 6
HS-6 1.98 3.96 6
HS-7 2.69 5.38 6
HS-8 3.52 7.04 6
HS-9 4.45 8.9 6
HS-10 5.49 10.98 6
HS-11 6.65 13.3 6
HydroStorm by
Hydroworks,
LLC1
HS-12 7.91 15.82 6
XC-2 0.57 1.16 6
XC-3 1.13 2.30 6
XC-4 1.86 3.79 6
XC-5 2.30 4.68 6
XC-6 3.31 6.74 6
XC-7 4.50 9.16 6
XC-8 5.88 11.97 6
XC-9 7.44 15.14 6
XC-10 9.19 18.70 6
XC-11 11.12 22.63 6
XC-12 13.23 26.92 6
AquaShield
Aqua-Swirl
Xcelerator1
XC-13 15.53 31.60 6
1 Installed in the configuration as reviewed by NJCAT only