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→Size a bioretention cell receiving flows directly to the storage reservoir for a constrained depth
<math>A_{p}=\frac{A_i\times i\times D}{(d_{T}'\times n')+(f'\times D)}</math>
<math>A_{p}=\frac{A_i\times i\times D}{(d_{T}'\times n')+(f'\times D)}</math>
{{Plainlist|1=Where:
{{Plainlist|1=Where:
*''A<sub>p</sub>'' = Area of the infiltration practice in m<sup>2</sup>
*''A<sub>p</sub>'' = Area of the infiltration practice (m<sup>2</sup>)
*''A<sub>i</sub>'' = Catchment impervious area in m<sup>2</sup>
*''A<sub>i</sub>'' = Catchment impervious area (m<sup>2</sup>)
*''D'' = Duration of design storm in hrs
*''D'' = Duration of design storm (h)
*''i'' = Intensity of design storm in mm/hr
*''i'' = Intensity of design storm (mm/h)
*''f''' = [[design infiltration rate]] in mm/hr
*''f''' = [[design infiltration rate]] (m/h)
*''n''' = Effective porosity of the fill materials within the active storage component(s) of practice, depth-weighted mean
*''n''' = Effective porosity of the fill materials within the active storage component(s) of practice, depth-weighted mean
*''d<sub>T</sub>''' = Total depth available between the elevation of the invert of the underdrain perforated pipe and one (1) metre above the seasonally high water table or top of bedrock (m) or other value determined to be suitable through groundwater mounding analysis.}}<br>
*''d<sub>T</sub>''' = Total depth available between the elevation of the invert of the underdrain perforated pipe and one (1) metre above the seasonally high water table or top of bedrock (m) or other value determined to be suitable through groundwater mounding analysis.}}<br>