Changes

These are (usually plastic) supporting structures placed around the trees and beneath adjacent paved areas. They prevent compaction to the roots of the tree and prevent root damage to the paving. They are sometimes configured to receive stormwater and to enclose ponded water which can then infiltrate the soil surrounding the tree.  

These are (usually plastic) supporting structures placed around the trees and beneath adjacent paved areas. They prevent compaction to the roots of the tree and prevent root damage to the paving. They are sometimes configured to receive stormwater and to enclose ponded water which can then infiltrate the soil surrounding the tree.  

Things to consider in design:

Things to consider in design:

*If the system is unlined it is hydraulically equivalent to a [[bioretention]] and provides similar water quality benefits.   

*If the system is unlined it is hydraulically equivalent to a [[bioretention]] cell and provides similar water quality benefits.   

*If the systems is lined, it is hydraulically similar to a large [[stormwater planter]]. Depending on the design detail it may retain significant stormwater within the planting volume soil and will provide water quality benefits.   

*If the system is lined and underdrained it is hydraulically similar to a large [[stormwater planter]]. Depending on the design detail it may retain significant stormwater within the planting soil volume and will provide water quality benefits.   

===Species selection===

===Species selection===

[[Trees: List]]

[[Trees: List]]

===Planting pit Sizing===

===Planting pit sizing===

[[Bioretention: Sizing]]

[[Bioretention: Sizing]]

===Inlets===

===Inlets===

Multiple methods for distribution and conveyance of runoff into the system are recommended for redundancy and conservative designs.  

Multiple methods for distribution and conveyance of runoff into the system are recommended for redundancy and conservative designs.  

Combinations may be made of:

Combinations may be made of:

*tree well flow,  

*tree well flow,  

*catch basins and distribution pipes, and  

*catchbasins and distribution pipes, and  

*direct infiltration from permeable paving.

*direct infiltration from permeable paving.

See also [[Inlets]] and [[pretreatment]]

See also [[Inlets]] and [[pretreatment]]

===Underdrain===

===Underdrain===

[[Underdrain]]

[[Underdrain]]

*[http://www.conteches.com/Products/Stormwater-Management/Biofiltration-Bioretention/Filterra Filterra]

*[http://www.conteches.com/Products/Stormwater-Management/Biofiltration-Bioretention/Filterra Filterra]

*[http://www.greenblue.com/na/ GreenBlue]

*[http://www.greenblue.com/na/ GreenBlue]

*[http://citygreen.com/products/stratacell/ Stratacell]

*[http://citygreen.com/products/stratacell/ Stratacell]

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[[Category:Green infrastructure]]

[[Category:Green infrastructure]]