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→Soil Volume
*[[Geotextiles]] are used with structural soils to prevent migration of fines from the road or sidewalk base into the structural soils. In BC, a Nilex 4545 fabric is used for this purpose, but other fabrics may also be suitable.
*[[Geotextiles]] are used with structural soils to prevent migration of fines from the road or sidewalk base into the structural soils. In BC, a Nilex 4545 fabric is used for this purpose, but other fabrics may also be suitable.
*Compaction to 95% SPD is achieved in 1 m lifts to 95% SPD. Testing of compaction of levels is accomplished with a trolled nuclear densometer for larger rock size mixes.
*Compaction to 95% SPD is achieved in 1 m lifts to 95% SPD. Testing of compaction of levels is accomplished with a trolled nuclear densometer for larger rock size mixes.
====Structural Soil Comparisons====
{|class="wikitable"
|+Specifications for Stormwater Tree Trenches using Structural Soils
|-
!Structural Soil Type
!Median Stone size/range
!Soil Texture
!Tackifiying Agent
!Approximate Porosity
|-
|'''CU-Soil™'''
|30mm (20-40mm)*
|Gravel: <5%
Sand: 20-45%
Silt: 20-50%
Clay: 20-40%
CEC >10
pH: 5.5 – 6.5
Organic Content: 2 – 5% by dry weight
|Hydrogel (coated potassium propenoate-propenamide copolymer)
|26%
|-
|'''B.C Soil'''
|75mm/60 – 80mm)
|Sand: 45-55%
Silt: 25-35%
Clay: 0 – 10%
Silt + Clay: 25 – 45%
pH: 6.0 – 7.0
Organic Content: 15-20%**
|Stabilizer
|33%
|-
|}
===Modular Soil Support Systems===
===Modular Soil Support Systems===