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→Size a bioretention cell for constrained ground area
==Size a bioretention cell for constrained ground area==
==Size a bioretention cell for constrained ground area==
{{float right|{{#widget:WolframAlpha|id=88d135fd5507a36a9770deaa8106c975}}}}
If the land area is limited, determine the ratio of catchment (A<sub>c</sub>) to BMP footprint area (A<sub>p</sub>):
If the land area is limited, determine the ratio of catchment (A<sub>c</sub>) to BMP footprint area (A<sub>p</sub>):
:<math>R=\frac{A_{c}}{A_{p}}</math>
:<math>R=\frac{A_{c}}{A_{p}}</math>
*''A<sub>c</sub>'' = Catchment area in m<sup>2</sup>}}
*''A<sub>c</sub>'' = Catchment area in m<sup>2</sup>}}
Then calculate the required depth (d<sub>T</sub>), as:
<math>d=\frac{D\left[Ri-q'\right]}{V_{R}}</math>
<math>d=\frac{D \left[ (R\times i)-f'\right]}{V_{R}}</math>
{{Plainlist|1=Where:
{{Plainlist|1=Where: