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*d<sub>i</sub>' = Design infiltration water storage depth (m)
 
*d<sub>i</sub>' = Design infiltration water storage depth (m)
 
*n<sub>r</sub>' = Effective porosity of the storage reservoir fill material(s).<br>
 
*n<sub>r</sub>' = Effective porosity of the storage reservoir fill material(s).<br>
 +
If the storage reservoir would need to be greater than 0.6 metres deep if filled with clear stone aggregate, consider installing a void-producing structure embedded in clear stone aggregate instead, which provides a greater effective porosity (n'), allows for a shallower storage reservoir depth, and saves aggregate.
    
==Calculate the total depth of the practice, d<sub>T</sub>==
 
==Calculate the total depth of the practice, d<sub>T</sub>==

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