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Line 1: − | colspan="2" ||Surface+ − + Line 9:
Line 9: − | colspan="2" |Storage+ Line 21:
Line 21: − | colspan="2"|Drain (underdrain)+
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!colspan = "2" style="background: darkcyan; color: white; align = center"|Surface
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|Berm height (mm)||This is the height of the curb which constrains the overland sheet flow of water. Where curb cuts or other outlet exists at the lowest point of an infiltration surface, the suggested value is 0.
|width = 210px|Berm height (mm)||This is the height of the curb which constrains the overland sheet flow of water. Where curb cuts or other outlet exists at the lowest point of an infiltration surface, the suggested value is 0.
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|Surface roughness (Manning’s n)||Lower numbers indicate less surface obstruction and result in faster flow. Suggested range for a surface of decorative rocks 0.03 – 0.05 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
|Surface roughness (Manning’s n)||Lower numbers indicate less surface obstruction and result in faster flow. Suggested range for a surface of decorative rocks 0.03 – 0.05 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233. https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
|Surface slope (%)||If the slope > 3%, consider using [[Checkdams]] or weirs to prevent erosion of the surface under high flow velocities.
|Surface slope (%)||If the slope > 3%, consider using [[Checkdams]] or weirs to prevent erosion of the surface under high flow velocities.
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!colspan = "2" style="background: darkcyan; color: white; align = center"|Storage
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|Thickness (mm)||Entire trench
|Thickness (mm)||Entire trench
|Design drawdown time (hrs)||Recommend 48 hours?
|Design drawdown time (hrs)||Recommend 48 hours?
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!colspan = "2" style="background: darkcyan; color: white; align = center"|Drain (underdrain)
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|Flow coefficient||Suggested value 1
|Flow coefficient||Suggested value 1