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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==
If the land area is limited, determine the ratio of catchment impervious area (A<sub>i</sub>) to practice pervious footprint area (A<sub>p</sub>):
If the land area is limited, determine the I/P ratio, which is the ratio of catchment impervious area (A<sub>i</sub>) to practice pervious footprint area (A<sub>p</sub>):
:<math>R=\frac{A_{i}}{A_{p}}</math>
:<math>R=\frac{A_{i}}{A_{p}}</math>