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<font size=3>'''This table shows settling chamber surface area'''.</font size><br>
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<font size=3>'''Settling chamber surface area for sand filters and perimeter sand filters'''.</font size><br>
 
Link to this [[Settling chamber surface area|table]]
 
Link to this [[Settling chamber surface area|table]]
 
<table class="sortable">
 
<table class="sortable">
 
<tr>
 
<tr>
<td rowspan=2 colspan=2><center>'''Sand Filter'''</center><td>
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<th rowspan=2 colspan=2><center>'''Sand Filter'''</center></th>
<td colspan=2>'''Maximum Ponding Depth (feet)'''</td>
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<th colspan=2>'''Maximum Ponding Depth (feet)'''</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td><center>'''<4'''</center></td>
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<th><center>'''< 4'''</center></th>
<td><center>'''4 to 10'''</center></td>
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<th><center>'''4 to 10'''</center></th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
 
<td rowspan=2>Impervious</td>
 
<td rowspan=2>Impervious</td>
<td>≥75%</td>
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<td>≥ 75%</td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
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<td>(0.25 V<sub>wq</sub>) / D<sub>max</sub></td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
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<td>(0.25 V<sub>wq</sub>) / D<sub>max</sub></td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td><75%</td>
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<td>< 75%</td>
<td>(0.25*Vwq)/D<sub>max</sub></td>
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<td>(0.25 V<sub>wq</sub>) / D<sub>max</sub></td>
<td>0.066*Vwq</td>
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<td>0.066 V<sub>wq</sub></td>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td rowspan=2 colspan=2>'''Perimeter Sand Filter'''<td>
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<th rowspan=2 colspan=2>'''Perimeter Sand Filter'''</th>
<td colspan=2>'''Maximum Ponding Depth (feet)'''</td>
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<th colspan=2>'''Maximum Ponding Depth (feet)'''</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td>'''<7.5'''</td>
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<th>'''<7.5'''</th>
<td>'''8 to 10'''</td>
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<th>'''8 to 10'''</th>
 
</tr>
 
</tr>
 
<tr>
 
<tr>
 
<td rowspan=2>Impervious</td>
 
<td rowspan=2>Impervious</td>
<td>≥75%</td>
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<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]]
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 +
<noinclude>[[Category:Level 3 - General information, reference, tables, images, and archives/Tables/Sand filter, iron enhanced sand filter, media filter]]</noinclude>

Latest revision as of 16:21, 4 August 2022

Settling chamber surface area for sand filters and perimeter sand filters.
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

This page was last edited on 4 August 2022, at 16:21.