Line 6: |
Line 6: |
| |- | | |- |
| |width = 210px|Berm height (mm) | | |width = 210px|Berm height (mm) |
| |Sometimes referred to as the bowl depth | | |Ponding depth, maximum (e.g. 300 mm), sometimes referred to as 'bowl depth' |
| |- | | |- |
| |Surface roughness (Manning’s n) | | |Surface roughness (Manning’s n) |
Line 23: |
Line 23: |
| |Depth of filter media | | |Depth of filter media |
| |- | | |- |
| |Porosity (fraction) | | |Porosity of filter media |
| |Suggest [[Bioretention media storage|0.4]] unless otherwise tested | | |Suggest [[Bioretention media storage|0.35]] unless otherwise tested |
| |- | | |- |
| |Field capacity (fraction) | | |Field capacity (fraction) |
Line 32: |
Line 32: |
| |Suggested value 0.03 <ref name = SWMM/> | | |Suggested value 0.03 <ref name = SWMM/> |
| |- | | |- |
| |Conductivity (mm/hr) | | |Hydraulic conductivity (mm/hr) |
| |Suggested range 25 – 250 mm/hr | | |Suggested range 25 – 250 mm/hr |
| |- | | |- |
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Line 46: |
| |Depth of storage aggregates layer | | |Depth of storage aggregates layer |
| |- | | |- |
| |Void ratio | | |Porosity of storage reservoir aggregate |
| |Suggest value 0.4 unless otherwise tested | | |Suggest value 0.4 unless otherwise tested |
| |- | | |- |
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Line 55: |
| |Maybe up to 0.5 to account for some anticipated maturation. | | |Maybe up to 0.5 to account for some anticipated maturation. |
| |- | | |- |
| |Design drawdown time (hrs) | | |Design [[drainage time]] (hrs) |
| |Also known as '[[drainage time]]' | | |Maximum permissible time to fully drain the storage reservoir. |
| |- | | |- |
| !colspan = "2" align = center"|'''Drain (underdrain)''' | | !colspan = "2" align = center"|'''Drain (underdrain)''' |