Changes

Jump to navigation Jump to search
Line 96: Line 96:  
*f<sub>m, min</sub> = minimum infiltration rate (i.e. saturated hydraulic conductivity) of the filter media (m/h), see [[Bioretention: Filter media|Filter media]] for guidance}}<br>
 
*f<sub>m, min</sub> = minimum infiltration rate (i.e. saturated hydraulic conductivity) of the filter media (m/h), see [[Bioretention: Filter media|Filter media]] for guidance}}<br>
 
For practices where flow is delivered to the storage reservoir:
 
For practices where flow is delivered to the storage reservoir:
<math>A_{p}=i\times D\times A_{i}/[(d_{a} + (f' \times D)]</math>
+
<math>A_{p}=i\times D\times A_{i}/[(d_{a}\times n + (f' \times D)]</math>
 
{{Plainlist|1=Where:
 
{{Plainlist|1=Where:
 
*d<sub>a</sub> = Active storage depth (m)
 
*d<sub>a</sub> = Active storage depth (m)
 +
*n = porosity of storage reservoir aggregate or effective porosity of void-producing structure system
 
*f' = design infiltration rate of the underlying native soil (m/h)
 
*f' = design infiltration rate of the underlying native soil (m/h)
 
*D = Design storm duration (h)}}<br>
 
*D = Design storm duration (h)}}<br>

Navigation menu