Changes

#The ''maximum'' total depth will be limited by construction practices i.e. not usually > 2 m.

#The ''maximum'' total depth will be limited by construction practices i.e. not usually > 2 m.

#The ''maximum'' total depth may be limited by the [[Infiltration| conditions underground]] e.g. the groundwater or underlying geology/infrastructure.

#The ''maximum'' total depth may be limited by the [[Infiltration| conditions underground]] e.g. the groundwater or underlying geology/infrastructure.

#The minimum total depth may be limited by the need to support vegetation i.e. not < 0.6 m.

#The minimum total depth will be limited by the need to support vegetation i.e. not < 0.6 m.

#[[Green roofs]], [[absorbent landscapes]] and [[permeable paving]] often receive very little flow from other surfaces, so that the I/P ratio is close to 1.

#[[Bioretention cells]] have a maximum recommended I/P ratio of 20.

#[[Infiltration trenches]], [[Infiltration chambers| chambers]] and [[bioretention cells]] have a maximum recommended I/P ratio of 20.

==Size a bioretention cell==

==Size a bioretention cell==