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| ===Rapid=== | | ===Rapid=== |
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| <p>Five percent of the average annual yield (Y<sub>0.05</sub>, in L) is calculated as the product of: | | <p>Five percent of the average annual yield (Y<sub>0.05</sub>, in L) is calculated as the product of: |
| <ul><li>The catchment area (A, in m<sup>2</sup>)</li> | | <ul><li>The catchment area (A, in m<sup>2</sup>)</li> |
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| <ol><li>A design rainfall depth is to be captured entirely by the RWH system.</li> | | <ol><li>A design rainfall depth is to be captured entirely by the RWH system.</li> |
| <li>The average annual demand (D<sub>0.05</sub>) is greater than the average annual yield (Y<sub>0.05</sub>) coming from the catchment. </li></ol></p> | | <li>The average annual demand (D<sub>0.05</sub>) is greater than the average annual yield (Y<sub>0.05</sub>) coming from the catchment. </li></ol></p> |
| <p>When Y<sub>0.05</sub>/ D<sub>0.05</sub> <0.33 <br> | | <p><strong>When Y<sub>0.05</sub>/ D<sub>0.05</sub> <0.33</strong> <br> |
| The total storage volume required (V<sub>S</sub>, in L) is calculated as the product of: | | The total storage volume required (V<sub>S</sub>, in L) is calculated as the product of: |
| <ul> | | <ul> |
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| Filter efficiency can be reasonably estimated as 0.9 pending manufacturer’s information. | | Filter efficiency can be reasonably estimated as 0.9 pending manufacturer’s information. |
| </p> | | </p> |
| <p>When 0.33 < Y<sub>0.05</sub>/ D<sub>0.05</sub> <0.7 <br> | | <p><strong>When 0.33 < Y<sub>0.05</sub>/ D<sub>0.05</sub> <0.7</strong> <br> |
| The total storage required is the sum of V<sub>S</sub> and Y<sub>0.05</sub>. </p> | | The total storage required is the sum of V<sub>S</sub> and Y<sub>0.05</sub>. </p> |
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