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mLine 47:
Line 47:
→Calculate drawdown time
Perimeter = 12 m (left) Perimeter = 20 m (right)]]
Perimeter = 12 m (left) Perimeter = 20 m (right)]]
{{Clickable button|[[Media:Darcy drainage.xlsx|Download 1-D Darcy drainage time calculator(.xlsx)]]}}
{{Clickable button|[[Media:Darcy drainage.xlsx|Download Darcy drainage time calculator(.xlsx)]]}}
In some situations, it may be possible to reduce the size of the bioretention required, by accounting for rapid drainage. Typically, this is only worth exploring over sandy soils with rapid infiltration.
In some situations, it may be possible to reduce the size of the bioretention required, by accounting for rapid drainage. Typically, this is only worth exploring over sandy soils with rapid infiltration.