Changes

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==Overview==

==Overview==

Stormwater tree trenches are linear tree planting structures that feature supported impermeable or [[permeable pavements]] that promote healthy tree growth while also helping to manage runoff. They are often located behind the curb within the road right-of-way and consist of subsurface trenches filled with modular structures and growing medium, or structurally engineered soil medium, supporting an overlying sidewalk pavement. They improve tree health by providing access to soil, air and stormwater for irrigation, allowing them to survive longer in harsh urban conditions.  

Stormwater tree trenches are linear tree planting structures that feature supported impermeable or [[permeable pavements]] that promote healthy tree growth while also helping to manage runoff. They are often located behind the curb within the road right-of-way and consist of subsurface trenches filled with modular structures and growing medium, or structurally engineered soil medium, supporting an overlying sidewalk pavement. They improve tree health by providing access to soil, air and stormwater for irrigation, allowing them to survive longer in harsh urban conditions.  

!Approximate Porosity

!Approximate Porosity

|-

|-

|'''CU-Soil™'''

|'''[https://gailmaterials.net/wp-content/uploads/2019/08/cu-structural_soil_specifications.pdf CU-Soil™]'''

|30mm (20-40mm)*

|30mm (20-40mm)*

|Gravel: <5%

|

Sand: 20-45%

Gravel: <5%<br>

Silt: 20-50%

Sand: 20-45%<br>

Clay: 20-40%

Silt: 20-50%<br>

CEC >10

Clay: 20-40%<br>

pH:  5.5 – 6.5

Cation Exchange Capacity (CEC) >10<br>

pH:  5.5 – 6.5<br>

Organic Content: 2 – 5% by dry weight

Organic Content: 2 – 5% by dry weight

|Hydrogel (coated potassium propenoate-propenamide copolymer)

|[http://www.amereq.com/pages/12/index.htm Hydrogel (coated potassium propenoate-propenamide copolymer)]

|26%

|26%

|-

|-

|'''B.C Soil'''

|'''B.C Soil'''

|75mm/60 – 80mm)

|75mm/60 – 80mm)

|Sand:  45-55%

|

Silt: 25-35%

Sand:  45-55%<br>

Clay: 0 – 10%

Silt: 25-35%<br>

Silt + Clay: 25 – 45%

Clay: 0 – 10%<br>

pH: 6.0 – 7.0

Silt + Clay: 25 – 45%<br>

pH: 6.0 – 7.0<br>

Organic Content: 15-20%**

Organic Content: 15-20%**

|Stabilizer

|[http://www.stabilizersolutions.com/products/stabilizer/ Stabilizer]

|33%

|33%

|-

|-

|}

|}