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→Calculate the remaining dimensions
==Calculate the remaining dimensions==
==Calculate the remaining dimensions==
* Step 6: Multiply the depth of each separate component by the void ratio and then sum the total.
* Step 6: Multiply the depth of each separate component by the void ratio and then sum the total to find the 1 dimensional storage (in mm).
* Step 7: Calculate the required total storage (in m<sup>3</sup>):
* Step 7: Calculate the required total storage (in m<sup>3</sup>):
<math>Storage=RVC_T\times A_c\times0.095</math>
<math>Storage=RVC_T\times A_c\times0.095</math>
{{Plainlist|1=Where:
{{Plainlist|1=Where:
* ''A<sub>c</sub>'' is the catchment area (Ha), and
* ''A<sub>c</sub>'' is the catchment area (Ha), and
* 0.095 is the product of a typical runoff coefficient for impermeable surfaces (0.95) and the units correction between m<sup>3</sup> and mm.Ha. (0.1)}}
* 0.095 is the product of a typical runoff coefficient for impermeable surfaces (0.95) and the units correction between m<sup>3</sup> and mm.Ha. (0.1)}}
* Step 8. Divide required storage (m<sup>3</sup>) by the 1 dimensional storage (in m) to find the required footprint area (A_p) for the bioretention in m<sup>2</sup>.
* Step 9. Calculate the peak flow rate through the filter media:
<math>Q_{p} = A_{p}\times K_{sat}
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