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Infiltration: Sizing and modeling
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Revision as of 16:01, 7 September 2017
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6 years ago
→Three dimensional infiltration
Line 66:
Line 66:
<h3>Drawdown time</h3>
<h3>Drawdown time</h3>
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The design of infiltration facilities should be checked for [[drawdown time]]. Target drawdown time is between 48-72 hours.
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The design of infiltration facilities should be checked for [[drawdown time]]. Target drawdown time is between 48-72 hours.
<br>
To calculate the time (''t'') to fully drain the facility:
To calculate the time (''t'') to fully drain the facility:
<math>t=\frac{nP}{qx}ln\left [ \frac{\left (d+ \frac{P}{x} \right )}{\left(\frac{P}{x}\right)}\right]</math>
<math>t=\frac{nP}{qx}ln\left [ \frac{\left (d+ \frac{P}{x} \right )}{\left(\frac{P}{x}\right)}\right]</math>
Jenny Hill
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