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Talk:Enhanced Grass Swale Design Guide (view source)

Revision as of 13:23, 18 October 2017

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|colspan="2" style="color:red; text-align: left"| '''Swale length between culverts'''  
|colspan="2" style="color:red; text-align: left"| '''Swale Length between Culverts'''  
| >= 5 || >= 5 || >= 5 ||  ||  ||  || Can amend with 2" of soil media or plant-derived compost to increase infiltration || < 5 acres, capture runoff from 10-20% of the IPCDA, soil could also be 50/50 sand soil mix instead of bioretention media || Compost amendments over full length and width ||  ||  ||  ||  
| >= 5 || >= 5 || >= 5 ||  ||  ||  || Can amend with 2" of soil media or plant-derived compost to increase infiltration || < 5 acres, capture runoff from 10-20% of the IPCDA, soil could also be 50/50 sand soil mix instead of bioretention media || Compost amendments over full length and width ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"| '''Max. Velocity For 4 hr.  25 mm(Chicago)'''
|colspan="2" style="color:red; text-align: left"| '''Max. Velocity for 25 mm Chicago Storm'''
| 0.5 m/s || 0.5 m/s || 0.5 m/s ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| 0.5 m/s || 0.5 m/s || 0.5 m/s ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"| '''Setback from building Foundation(m)'''
|colspan="2" style="color:red; text-align: left"| '''Setback from Building Foundation(m)'''
| 4 ||  || 4 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| 4 ||  || 4 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''(Impervious drainage/treatment) area'''
|colspan="2" style="color:red; text-align: left"|'''(Impervious Drainage/Treatment) Area'''
| 5:1 to 10:1 ||  || 5:1 to 10:1 || CDA < 5 acres and WQV peak flow < 3 cfs ||  || CDA < 2.5 acres ||  ||  ||  ||  ||  || CDA <15000 ft2 ||  
| 5:1 to 10:1 ||  || 5:1 to 10:1 || CDA < 5 acres and WQV peak flow < 3 cfs ||  || CDA < 2.5 acres ||  ||  ||  ||  ||  || CDA <15000 ft2 ||  
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|colspan="2" style="color:red; text-align: left"|'''longitudinal slope'''
|colspan="2" style="color:red; text-align: left"|'''Longitudinal Slope'''
| (0.5-4.0)%,check dam for >3%  || (0.5-4.0)%,check dam for >3%  || (0.5-6.0) %, check dam for >3% ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| (0.5-4.0)%,check dam for >3%  || (0.5-4.0)%,check dam for >3%  || (0.5-6.0) %, check dam for >3% ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Bottom width (m)'''
|colspan="2" style="color:red; text-align: left"|'''Bottom Width (m)'''
| 0.75-3.0 || 0.75-3.0 || 0.75-3.0 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| 0.75-3.0 || 0.75-3.0 || 0.75-3.0 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Flow depth (mm) (25 mm Chicago storm event)'''
|colspan="2" style="color:red; text-align: left"|'''Flow Depth (mm) for (25 mm Chicago Storm Event)'''
| max 100 (25 mm storm) || max 100 (25 mm storm) || max 100 (25 mm storm) ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| max 100 || max 100 || max 100 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Side slope (H:V)'''
|colspan="2" style="color:red; text-align: left"|'''Side Slope (H:V)'''
| Max. 2.5:1 , 4:1 where space permits|| Max. 2.5:1 , 4:1 is prefered || Max. 2.5:1 , 4:1 where space permits  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| Max. 2.5:1 , 4:1 where space permits|| Max. 2.5:1 , 4:1 is prefered || Max. 2.5:1 , 4:1 where space permits  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"| '''Soil Amendments'''  
|colspan="2" style="color:red; text-align: left"| '''Soil Amendments'''  
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|colspan="2" style="color:black; text-align: right"|depth (mm)  
|colspan="2" style="color:black; text-align: right"|Depth (mm)  
|300 || 300 || 300 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
|300 || 300 || 300 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:black; text-align: right"|Oganic content
|colspan="2" style="color:black; text-align: right"|Oganic Content
|8-15%  by weight || 8-15%  by weight || 8-15%  by weight ||  ||  ||  ||  || 3-15% || 5-10 % ||  ||  ||  ||  
|8-15%  by weight || 8-15%  by weight || 8-15%  by weight ||  ||  ||  ||  || 3-15% || 5-10 % ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Grass height (mm)'''
|colspan="2" style="color:red; text-align: left"|'''Grass Height (mm)'''
|75-150 || 150 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
|75-150 || 150 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Gravel diaphram'''                       
|colspan="2" style="color:red; text-align: left"|'''Gravel Diaphram'''                       
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|colspan="2" style="color:black; text-align: right"| Diameter (mm)  
|colspan="2" style="color:black; text-align: right"| Diameter (mm)  
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|600 ||  || 600 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
|600 ||  || 600 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Available space of the contributing drainage area (%) '''  
|colspan="2" style="color:red; text-align: left"|'''Available Space of the Contributing Drainage Area (%) '''  
| 5-15 ||  || 5-15 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
| 5-15 ||  || 5-15 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Depth between the bottom of the swale and high water table (m)'''
|colspan="2" style="color:red; text-align: left"|'''Depth between the Bottom of the Swale and High Water Table (m)'''
|>= 1 ||  || >= 1 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
|>= 1 ||  || >= 1 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''Enhanced grass swales area/contributing road surface'''   
|colspan="2" style="color:red; text-align: left"|'''Enhanced Grass Swales Area/Contributing Road Surface'''   
|1:1 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||
|1:1 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  ||
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|colspan="2" style="color:red; text-align: left"|'''Drainage time of ponded water after the end of storm event , hr'''  
|colspan="2" style="color:red; text-align: left"|'''Drainage Time of ponded water after the end of storm event (hr.)'''  
|< = 24 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
|< = 24 ||  ||  ||  ||  ||  ||  ||  ||  ||  ||  
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|colspan="2" style="color:red; text-align: left"|'''CDA or Impervious ratio'''
|colspan="2" style="color:red; text-align: left"|'''CDA or Impervious Ratio'''
||    ||    ||    ||    ||    ||  ||  ||  || < 5 acres || < 2.5 acres ||  ||  ||  
||    ||    ||    ||    ||    ||  ||  ||  || < 5 acres || < 2.5 acres ||  ||  ||  
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