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| ;n | | ;n |
| :Manning's coefficient (unitless) (Note: for clarity porosity is being expressed as 'void ratio' and sharing the notation ' | | :Manning's coefficient (unitless) (Note: for clarity porosity is being expressed as 'void ratio' and sharing the notation V<sub>R</sub> |
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| ;q | | ;q |
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Line 24: |
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| ;R | | ;R |
| :Ratio of catchment (A<sub>c</sub</p>) to the practice footprint area (A<sub>p</sub>). In [[green roofs]] (and often permeable paving systems) this will be 1:1. In [[bioretention]] it may be 15 or 20 to 1. | | :Ratio of catchment (A<sub>c</sub>) to the practice footprint area (A<sub>p</sub>). ''syn.'' I/P ratio. For[[green roofs]] (and often permeable paving systems) this will be 1:1. In [[bioretention]] it may be 15 or 20 to 1. |
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| ;R<sub>a</sub> | | ;R<sub>a</sub> |