Changes

The equation for the depth of the stone reservoir (''d_{r, max}'', mm) is as follows:  

The equation for the depth of the stone reservoir (''d_{r, max}'', mm) is as follows:  

<math>d_{r, max}=\frac{\left[\left ( RVC_{T}\times R \right )+ RVC_{T}-\left(f'\times t\right )\right]}{n}</math>

<math>d_{r, max}=\frac{\left[\left ( RVC_{T}\times R \right )+ RVC_{T}-\left(f'\times D\right )\right]}{n}</math>

{{Plainlist|1=Where:

{{Plainlist|1=Where:

*''RVC_T'' = [[Runoff volume control target]] (mm)  

*''RVC_T'' = [[Runoff volume control target]] (mm)  

*''R'' = ''A_i''/''A_p''; the ratio of impervious contributing drainage area (''A_i'') to permeable pavement area (''A_p''). Note that the contributing drainage area should not contain pervious areas. R should not normally exceed 2.

*''R'' = ''A_i''/''A_p''; the ratio of impervious contributing drainage area (''A_i'') to permeable pavement area (''A_p''). Note that the contributing drainage area should not contain pervious areas. R should not normally exceed 2.

*''f''' = [[Design infiltration rate]] of underlying native soil (mm/hr)  

*''f''' = [[Design infiltration rate]] of underlying native soil (mm/hr)  

*''t'' = Duration of the design storm event (e.g., 2 hr)  

*''D'' = Duration of the design storm event (e.g., 2 hr)  

*''n'' = Porosity of the stone bed aggregate material (typically 0.4 for 50 mm dia. [[reservoir aggregate|clear stone]])}}  

*''n'' = Porosity of the stone bed aggregate material (typically 0.4 for 50 mm dia. [[reservoir aggregate|clear stone]])}}