m
m
Line 13: Line 13:
 
<td rowspan=2>Impervious</td>
 
<td rowspan=2>Impervious</td>
 
<td>≥75%</td>
 
<td>≥75%</td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
+
<td>(0.25*V<sub>wq</sub>)/D<sub>max</sub></td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
+
<td>(0.25*V<sub>wq</sub>)/D<sub>max</sub></td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
 
<td><75%</td>
 
<td><75%</td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
+
<td>(0.25*V<sub>wq</sub>)/D<sub>max</sub></td>
<td>0.066*Vwq</td>
+
<td>0.066*V<sub>wq</sub></td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
Line 32: Line 32:
 
<td rowspan=2>Impervious</td>
 
<td rowspan=2>Impervious</td>
 
<td>≥75%</td>
 
<td>≥75%</td>
<td>(0.5*Vwq)/D<sub>max</sub></td>
+
<td>(0.5*V<sub>wq</sub>)/D<sub>max</sub></td>
<td>(0.5*Vwq)/D<sub>max</sub></td>
+
<td>(0.5*V<sub>wq</sub>)/D<sub>max</sub></td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
 
<td><75%</td>
 
<td><75%</td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
+
<td>(0.25*V<sub>wq</sub>)/D<sub>max</sub></td>
<td>0.066*Vwq</td>
+
<td>0.066*V<sub>wq</sub></td>
 
</tr>
 
</tr>
 
</table>
 
</table>
 
[[category:table]]
 
[[category:table]]

Revision as of 19:31, 18 March 2013

This table shows settling chamber surface area.
Link to this table

Sand Filter
Maximum Ponding Depth (feet)
< 4
4 to 10
Impervious ≥75% (0.25*Vwq)/Dmax (0.25*Vwq)/Dmax
<75% (0.25*Vwq)/Dmax 0.066*Vwq
Perimeter Sand Filter Maximum Ponding Depth (feet)
<7.5 8 to 10
Impervious ≥75% (0.5*Vwq)/Dmax (0.5*Vwq)/Dmax
<75% (0.25*Vwq)/Dmax 0.066*Vwq