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<table class="sortable">
 
<table class="sortable">
 
<tr>
 
<tr>
<td rowspan=2 colspan=2><center>'''Sand Filter'''</center><td>
+
<th rowspan=2 colspan=2><center>'''Sand Filter'''</center><th>
<td colspan=2>'''Maximum Ponding Depth (feet)'''</td>
+
<th colspan=2>'''Maximum Ponding Depth (feet)'''</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td><center>'''< 4'''</center></td>
+
<th><center>'''< 4'''</center></th>
<td><center>'''4 to 10'''</center></td>
+
<th><center>'''4 to 10'''</center></th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
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</tr>
 
</tr>
 
<tr>
 
<tr>
<td rowspan=2 colspan=2>'''Perimeter Sand Filter'''<td>
+
<th rowspan=2 colspan=2>'''Perimeter Sand Filter'''<th>
<td colspan=2>'''Maximum Ponding Depth (feet)'''</td>
+
<th colspan=2>'''Maximum Ponding Depth (feet)'''</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>'''<7.5'''</td>
+
<th>'''<7.5'''</th>
<td>'''8 to 10'''</td>
+
<th>'''8 to 10'''</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>

Revision as of 19:38, 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