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Line 285: − − ==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. − *Structures are designed to be filled with growing medium for tree rooting and support a vehicle loaded pavement up to and including AASHTO H-20 and Ontario Building Code standards for sidewalks. − *Critical to modular soil support system design is that each structure or layer of structures be independent of all adjacent ones, such that one or multiple layers can be removed to facilitate future utility installation or repair.
→Soil cells
*[[Perennials: List]]
*[[Perennials: List]]
*[[Graminoids: List]]
*[[Graminoids: List]]
==Performance==
==Performance==