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→Soil cells
==Planning considerations==
==Planning considerations==
A commonly held view is that a tree's root system will be similar to it's visible crown. For many trees, this is not the case, as roots will more often spread much more widely, but to a shallower depth <ref>Crow, P. (2005). The Influence of Soils and Species on Tree Root Depth. Edinburgh. Retrieved from https://www.forestry.gov.uk/pdf/FCIN078.pdf/$FILE/FCIN078.pdf</ref>. For more detailed information on planning (site) considerations see [[Bioretention]]
A commonly held view is that a tree's root system will be similar to it's visible crown. For many trees, this is not the case, as roots will more often spread much more widely, but to a shallower depth <ref>Crow, P. (2005). The Influence of Soils and Species on Tree Root Depth. Edinburgh. Retrieved from https://www.forestry.gov.uk/pdf/FCIN078.pdf/$FILE/FCIN078.pdf</ref>. For more detailed information on planning (site) considerations see [[Bioretention]]
===Planting in slopes===
Smooth slopes should be amended into localised terraces by the Landscape Architect when planting large trees into slopes > 5 %. <ref>Wilkus A., 'Slope Style', Landscape Architecture Magazine, April 2018, accessed 21 December 2018, https://landscapearchitecturemagazine.org/2018/04/24/slope-style/</ref>
==Design==
==Design==
There are many design configuration options for including trees into stormwater management plans.
==Soil cells==
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:
*If the system is unlined it is hydraulically equivalent to a [[bioretention]] cell and provides similar 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]]
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*http://gievidencebase.botanicgardens.sa.gov.au/contents/7-water-management#Canopy-Interception
*http://gievidencebase.botanicgardens.sa.gov.au/contents/7-water-management#Canopy-Interception
*[http://www.jamesurban.net/specifications standard details and specifications from James Urban]
{{:Disclaimer}}
{{:Disclaimer}}
*[http://cupolex.ca/ Cupolex]
*[http://cupolex.ca/ Cupolex]
*[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://http://www.storm-tree.com/index Storm-Tree]
*[http://citygreen.com/products/stratacell/ Stratacell]
*[http://citygreen.com/products/stratacell/ Stratacell]
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[[Category:Green infrastructure]]
[[Category:Green infrastructure]]