Viridian III Technical Specification OPW1 [As Published] · 142008.256

                                                                           VIRIDIAN III - Landscape Works
OPERATIONS: Remove dead and decayed wood or limbs that have been broken. Make
cuts into live wood. If the trees show signs of deterioration after the work has been done,
carry out a program of feeding or soil amelioration such as soil aeration, irrigation or
incorporation of organic material. Continue this program until the end of the planting
establishment period.

PRECAUTIONS: Avoid damage to trees being treated or to nearby trees and surroundings.
Do not use trees as anchors for winching operations or bracing. Provide bracing as
necessary before cutting to prevent uncontrolled breakages and damage to surroundings.

DRESSING: Prevent incursion of rot or disease after cutting.

14.6   PLANT MATERIALS
All tree planting stock shall conform with NATSPEC Guide: Specifying Trees.

Calliper: Measured at 300 mm above ground.
Size index: Product of height (m) x calliper (mm).

The Contractor shall supply and plant the following plants to the minimum requirements as
outlined below:

EX-GROUND - Shall be ex-ground suitably pre-prepared well formed specimen hand
selected with clear trunk and well developed with minimum height and spread as specified
on the schedule. Ball & burlap prior to transplantation.
400 LITRE- Shall be in an approved container with a volume no less than 400 litres (or
equivalent 800x 970mm plastic bag) with minimum height and spread as specified on the
schedule.
200 LITRE - Shall be in approved container with a volume no less than 200 litres (or
equivalent 660x 720mm plastic bag) with minimum height and spread as specified on the
schedule.
45 LITRE – Shall be in a minimum 45 litre (plastic bags 420mm diam x 450mm or equal)
with minimum height and spread as specified on the schedule.
300mm CONTAINER – Shall have a strong primary stem and secondary branches if
applicable and shall be in a container 300mm x diam x 350mm. Minimum plant height to be
600mm unless otherwise specified.
200mm CONTAINER – Shall have a strong primary stem with well developed secondary
growth. Minimum height 450mm unless otherwise specified.
140mm CONTAINER – Shall have a strong primary stem with developing secondary shoots.
Shrubs shall be a minimum of 300mm high.

All plants will have the following characteristics:
-       Large healthy root systems, with no evidence of root curl, restriction or damage.
-       Vigorous, well established, free from disease and pests, of good form consistent with
        the species or variety.
-       Hardened off for wind conditions, not soft or forced, and suitable for planting in the
        natural climatic conditions prevailing at the site.
-       Maximum variation in crown bulk on opposite sides of stern axis: 20%

14.7   STAKES AND TIES

14.7.1 REQUIREMENT – CONTAINER TREES
Provide hardwood stakes that are straight, free from knots or twists, pointed at one end.
Drive stakes into the ground at least one third of their length, avoiding damage to the root
system.

Remove all nursery stakes and ties at installation of all plant stock.


EDAW Aust                             Page 42                            February 2008