Rooftop Meadow Grass Media

This mix is specifically for A-horizon on-slab application supporting perennial Meadowgrass vegetation. Low organic matter, low nutrient holding and tightly graded product is required.

Download Pdf

Description

Specification - S19. Rooftop Meadowgrass Media


Part A: “Fit-for-purpose” Performance Description

This mix is specifically for A-horizon on-slab application supporting perennial Meadowgrass vegetation. Low organic matter, low nutrient holding and tightly graded product is required.


Part B: Product Specification (Technical parameters)

Analysis



Physical

B.D. (@ 16 drops)

Kg/l

1.43

 
B.D (Predicted Ksat)

Kg/l

1.72

 
Sat Hyd Cond(Deff)

Mm/hr

237

 
Total Porosity

%v/v

35

 
Water-filled Porosity

%v/v

13

 
Air-filled Porosity

%v/v

22

Chemical

pH in water (1:5)

pH Units

6.0-6.5

Particle Size Analysis 
>3.35mm

%

0.3



2.0-3.35mm

%

0.6

 
1.0-2.0mm

%

1.2



0.50-1.0mm

%

8.5

 
0.25-0.50mm

%

50.1

 
0.15-0.25mm

%

21.7

 
0.106-0.15mm

%

5.5

 
0.053-0.106mm

%

3.4

 
0.02-0.053mm

%

1.5

 
0.002-0.02mm

%

2.5

 
<0.002mm

%

4.7

Performance Factors

Gradation Index (D90/D10)



7.39

 
Coefficient of Uniformity



4.86

 
Fineness Modulus



1.6

D Values

D100:



4.108

 
D90:



0.538

 
D85:



0.478

 
D60:



0.353

 
D50:



0.303

 
D35:



0.230

 
D30:



0.207

 
D25:



0.184

 
D15:



0.129

 
D10:



0.073

 
D5:



0.004



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. This is not a low density soil. Consideration must be given to structural capacity to support the load.