Rooftop Meadow Grass B - Horizon
This is a B-horizon on-slab mix to be installed in association with Specification S19 – Rooftop Meadowgrass Media.
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Part C: Components
This formulation requires washed and specifically graded mineral components in order to meet the D Values specified. Lack of adherence to this may result in unacceptable slumping and compaction of time.
This product may be installed to a depth of 500mm where a B-horizon installation is designed. This is not a low density soil. Consideration must be given to structural capacity to support the load.
Description
Specification - S19a. Rooftop Meadowgrass B-horizon
Part A: “Fit-for-purpose” Performance Description
This is a B-horizon on-slab mix to be installed in association with Specification S19 – Rooftop Meadowgrass Media.
This is a highly permeable, low nutrient and very low organic matter product.
Part B: Product Specification (Technical parameters)
Analysis |
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Physical
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B.D. (Kg/l @ 16 drops)
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kg/l
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1.44 |
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B.D (Predicted Ksat)
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kg/l
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1.75
|
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Sat Hyd Cond(Deff)(mm/hr)
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mm/hr
|
337
|
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Total Porosity (%v/v)
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%v/v
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34
|
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Water-filled Porosity %v/v
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%v/v
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12
|
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Air-filled Porosity (%v/v)
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%v/v
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22
|
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Chemical
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pH in water
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pH Units
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6.0-6.5
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Particle Size Analysis
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>3.35mm
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%
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0.1
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2.0-3.35mm
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%
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0.4
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1.0-2.0mm
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%
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1.2
|
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0.50-1.0mm
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%
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12.3
|
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0.25-0.50mm
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%
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54.7
|
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0.15-0.25mm
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%
|
17.8
|
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0.106-0.15mm
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%
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4.2
|
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0.053-0.106mm
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%
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2.9
|
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0.02-0.053mm
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%
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2.1
|
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0.002-0.02mm
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%
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1.0
|
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<0.002mm
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%
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3.5
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Performance Factors
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Gradation Index (D90/D10)
|
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7.39
|
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Coefficient of Uniformity
|
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4.86
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Fineness Modulus
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1.6
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D Values
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D100:
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3.688
|
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D90:
|
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0.659
|
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D85:
|
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0.495
|
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D60:
|
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0.381
|
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D50:
|
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0.335
|
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D35:
|
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0.266
|
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D30:
|
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0.242
|
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D25:
|
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0.214
|
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D15:
|
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0.158
|
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D10:
|
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0.112
|
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D5:
|
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0.028
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Part C: Components
This formulation requires washed and specifically graded mineral components in order to meet the D Values specified. Lack of adherence to this may result in unacceptable slumping and compaction of time.
This product may be installed to a depth of 500mm where a B-horizon installation is designed. This is not a low density soil. Consideration must be given to structural capacity to support the load.