Viridian III Technical Specification OPW1 [As Published] · 142008.256

                                                                      VIRIDIAN III - Landscape Works
Fasten poles to engineer’s retaining walls as per engineer’s specification.




                                     END OF SECTION




12.    TOPSOIL


12.1   SUBSOIL

Stockpiled subsoil mix to be used as is. Spread evenly 100mm subsoil mix over the
prepared subgrade areas. Services and roots: Do not disturb services or existing tree roots.
If necessary, cultivate these areas by hand.

Cultivation: Thoroughly mix in materials required to be incorporated into the subsoil.
Cultivate manually within 300mm of paths or structures. Remove stones exceeding 25mm,
clods of earth exceeding 50mm, and weeds, rubbish or other deleterious material brought to
the surface during cultivation. Trim the surface to design levels after cultivation.

12.2   IMPORTED TOPSOIL

12.2.1 STANDARDS
Topsoil shall comply with this specification and AS 4419 (1998) `Soils for Landscaping and
Garden Use’.


12.2.2 INTERPRETATION
DEFINITIONS
Topsoil: Soil that contains the following characteristics:
           ƒ Contains organic matter.
           ƒ Supports plant life.
           ƒ Free from unwanted matter.
Unwanted matter (in topsoil):
           ƒ Stones over 25 mm diameter.
           ƒ Clay lumps.
           ƒ Weeds and tree roots.
           ƒ Sticks and rubbish.
           ƒ Material toxic to plants.
Imported topsoil:
           ƒ Fine: Clay loam, fine sandy loam, sandy clay loam, silty loam, loam.
           ƒ Medium: Sandy loam, fine sandy loam.
           ƒ Coarse: Sand, loamy sand.
Topsoil mixture: Topsoil and compost or other additives, thoroughly mixed before placing.

EDAW Aust                            Page 34                        February 2008


[OCR of page images]
VIRIDIAN III - Landscape Works

 

Fasten poles to engineer’s retaining walls as per engineer’s specification.

END OF SECTION

12. TOPSOIL

 

 

12.1 SUBSOIL

 

Stockpiled subsoil mix to be used as is. Spread evenly 100mm subsoil mix over the
prepared subgrade areas. Services and roots: Do not disturb services or existing tree roots.
If necessary, cultivate these areas by hand.

Cultivation: Thoroughly mix in materials required to be incorporated into the subsoil.
Cultivate manually within 300mm of paths or structures. Remove stones exceeding 25mm,
clods of earth exceeding 50mm, and weeds, rubbish or other deleterious material brought to
the surface during cultivation. Trim the surface to design levels after cultivation.

 

 

12.2 IMPORTED TOPSOIL

 

12.2.1 STANDARDS

 

Topsoil shall comply with this specification and AS 4419 (1998) “Soils for Landscaping and
Garden Use’.

12.2.2 INTERPRETATION

 

DEFINITIONS
Topsoil: Soil that contains the following characteristics:
= Contains organic matter.
= Supports plant life.
= Free from unwanted matter.
Unwanted matter (in topsoil):
= Stones over 25 mm diameter.
= Clay lumps.
= Weeds and tree roots.
= Sticks and rubbish.
= Material toxic to plants.
Imported topsoil:
= Fine: Clay loam, fine sandy loam, sandy clay loam, silty loam, loam.
= Medium: Sandy loam, fine sandy loam.
= Coarse: Sand, loamy sand.
Topsoil mixture: Topsoil and compost or other additives, thoroughly mixed before placing.

EDAW Aust Page 34 February 2008