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Line 17:
Line 17: − <p>Once the depth of the stone reservoir is determined the water quality volume (WQV), can be used to determine the area needed using the following equation:</p>+ − <strong>A<sub>f</sub> = WQV /(d × V<sub>r</sub>)</strong> − <p>Where: − <br>A<sub>f</sub> = Area of facility (m<sup>2</sup>) − <br>WQV = Water quality volume (m<sup>3</sup>) − <br>d = Stone reservoir depth (m) − <br>V<sub>r</sub> = Void space ratio for aggregate (typically 0.4 for 50 mm clear stone) − </p> − <p>The ratio of impervious drainage area to infiltration area should be between 5:1 and 20:1 to limit the rate of accumulation of fine sediments and clogging.</p>
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The ratio of impervious drainage area to infiltration area should be between 5:1 and 20:1 to limit the rate of accumulation of fine sediments and clogging.</p>
[[category: Infiltration]]
[[category: Infiltration]]
[[category: modeling]]
[[category: modeling]]