Changes

{{Clickable button|[[Media:Infiltration Sizing.xlsx|Download Infiltration Sizing.xlsx calculator tool]]}}

{{Clickable button|[[Media:Infiltration Sizing.xlsx|Download Infiltration Sizing.xlsx calculator tool]]}}

==To calculate the required depth, where the area of the facility is constrained (3D)==

==To calculate the required depth, where the area of the facility is constrained (3D drainage)==

In some very constrained sites, the surface area of the BMP may be limited, in this case the required depth of cell or trench can be calculated:

In some very constrained sites, the surface area of the BMP may be limited, in this case the required depth of cell or trench can be calculated:

:<math>d=a[e^{\left ( -bD \right )} -1]</math>

:<math>d=a[e^{\left ( -bD \right )} -1]</math>