Changes

*Infiltration facilities can be designed to be inline or offline from the drainage system. See [[Inlets]]

*Infiltration facilities can be designed to be inline or offline from the drainage system. See [[Inlets]]

*Inline facilities accept all of the flow from a drainage area and convey larger event flows through an overflow outlet. The overflow must be sized to safely convey larger storm events out of the facility.  

*Inline facilities accept all of the flow from a drainage area and convey larger event flows through an overflow outlet. The overflow must be sized to safely convey larger storm events out of the facility.  

:The invert of the overflow should be placed at the maximum water surface elevation of the bioretention area, (typically 150 - 250 mm above the surface).

:

*The overflow must be situated at the far end of the facility to prevent any localised ponding to cause bypassing of the infiltration facility.  

*The overflow must be situated at the far end of the facility to prevent any localised ponding to cause bypassing of the infiltration facility.  

*Offline facilities use flow splitters or bypass channels that only allow the required water quality storage volume to enter the facility.  

*Offline facilities use flow splitters or bypass channels that only allow the required water quality storage volume to enter the facility.  

:Higher flows are diverted and do not enter the infiltration practice. A pipe can by used for this, but a weir or [[curb cuts|curb cut]] minimizes clogging and reduces the maintenance frequency.

:Higher flows are diverted and do not enter the infiltration practice. A pipe can by used for this, but a weir or [[curb cuts|curb cut]] minimizes clogging and reduces the maintenance frequency.

==Options==

==Options==