m
m
Line 7: Line 7:
 
</tr>
 
</tr>
 
<tr>
 
<tr>
<td><center>'''<4'''</center></td>
+
<td><center>'''< 4'''</center></td>
 
<td><center>'''4 to 10'''</center></td>
 
<td><center>'''4 to 10'''</center></td>
 
</tr>
 
</tr>

Revision as of 19:30, 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