Landscape Technical Specification - OPW14/0197

Doonella – Stage C
9.10.3 REJECTION

The Superintendent or nominated representative reserves the right to reject any tree considered unsuitable
at any stage during the inspection and installation period. The Superintendent shall reject any tree that
does not meet the physical and aesthetic condition of the approved sample at the point of supply.

If the material has been rejected after installation, rejected material will be removed and replaced with a
replacement of equivalent size, condition of the approved sample within 14 days of the issue of an
instruction and all costs shall be borne by the contractor, inclusive of additional consultants fees to
reinspect material at the point of supply where considered necessary.

A photograph of the replacement shall be supplied for approval prior to installation.



9.10.4 PHOTOGRAPHIC VERIFICATION

The Contractor shall supply the Superintendent with two (2) dated sets of photos of all proposed trees
within fourteen (14) days of the signing of the contract and two (2) dated sets on the completion of root
pruning as proof of this operation and condition of the tree.

The Contractor is advised that representative photographs and sources of supply are to be provided with
the tender documents. Where the photographs do not confirm the conformance of the tree to the
specification, and the point of supply is outside of a 100km radius from the site, the Contractor shall pay all
costs in relation to travel expenses incurred by Superintendent or their representative in the inspection of
the trees.

9.10.5 TREE CHARACTERISTICS

It shall be the Contractors responsibility to secure and maintain the trees for the duration of the Contract.
Any tree not conforming to the approved standard shall be rejected by the Superintendent / Landscape
Architects and replaced at the Contractors expense.

All trees shall bear a growth habit typical of the species and shall be supplied to site in a healthy condition,
free from pest and fungal infestation and physical damage. Trees shall be pruned as necessary to promote
a balanced canopy structure appropriate to the species.

Materials: The Contractor shall conform to the following specification. All measurements shall be verified
by the Superintendent prior to delivery and installation.

Identification of Trees: All trees shall be true to species and/or approved cultivars. The contractor shall
label each specimen with both species nomenclature and a code number for reference. Labels shall be
water resistant, secured to the tree and capable of lasting the term of the Contract.




9.11     STAKES AND TIES

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.

Stake Sizes:
For plants > 2.5 m high: Three 50 x 50 x 2400 mm stakes per plant.
For plants 1 - 2.5 m high: Two 50 x 50 x 1800 mm stakes per plant.
For plants < 1 m high: One 38 x 38 x 1200 mm stake per plant.
Ties:
Provide ties fixed securely to the stakes, one tie at half the height of the main stem, others as necessary to
stabilise the plant.
Tie types:
50 mm elastic hessian webbing installed and stapled to the stake. Ties shall be fastened to adequately
restrain the tree without causing damage to the trunk. Ensure ties allow provision for trunk growth. Remove
existing nursery ties.




AECOM                                         10