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→Calculate drawdown time
*''d<sub>T</sub>'' is the total depth of the practice, including the ponding zone (m).}}
*''d<sub>T</sub>'' is the total depth of the practice, including the ponding zone (m).}}
This 3 dimensional equation makes use of the hydraulic radius (''A<sub>p</sub>''/''P''), where ''P'' is the perimeter (m) of the facility. <br>
This 3 dimensional equation makes use of the hydraulic radius (''A<sub>p</sub>''/''x''), where ''x'' is the perimeter (m) of the facility. <br>
Maximizing the perimeter of the facility directs designers towards longer, linear shapes such as [[bioswales]].
Maximizing the perimeter of the facility directs designers towards longer, linear shapes such as [[bioswales]].
[[category: modeling]]
[[category: modeling]]
[[category: infiltration]]
[[category: infiltration]]