Changes

*''Σ d'' is the total depth of bioretention components over the perforated pipe (m) (e.g. ponding/[[mulch]]/[[filter media]]/[[choker layer]]),  

*''Σ d'' is the total depth of bioretention components over the perforated pipe (m) (e.g. ponding/[[mulch]]/[[filter media]]/[[choker layer]]),  

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===Example calculation===

===Example calculation===

Then the maximum flow rate per planter is calculated:

Then the maximum flow rate per planter is calculated:

<math>Q_{max, p}=\frac{8\ m\times 0.5\times 0.61\times 0.0024\ m^{2}/m\sqrt{2\cdot 9.81\ m/s^{2}\cdot \sum 1.1\ m}}{1000}=27\ L/s</math>

<math>Q_{max, p}=\frac{8\ m\times 0.5\times 0.61\times 0.0024\ m^{2}/m\sqrt{2\cdot 9.81\ m/s^{2}\cdot \sum 1.1\ m}}{1000}=27\ L/s</math>

 

==External references==

===External references===

*Hazenberg, G., and U. S. Panu (1991), Theoretical analysis of flow rate into perforated drain tubes, Water Resour. Res., 27(7), 1411–1418, doi:10.1029/91WR00779.

*Hazenberg, G., and U. S. Panu (1991), Theoretical analysis of flow rate into perforated drain tubes, Water Resour. Res., 27(7), 1411–1418, doi:10.1029/91WR00779.