Viridian III Technical Specification OPW1 [As Published] · 142008.256

                                                                        VIRIDIAN III - Landscape Works

8.     FENCES


8.1    GENERAL

SAWN / DRESSED TIMBER: All timber shall be hardwood to AS 2082 to the stress grade
nominated. Where timber is specified as ‘appearance’ or dressed grade it shall also meet
the requirements of the stress grade. All timber to be Durability 2 class except where in
contract with ground surface where it shall be Durability Class 1. Any sapwood shall be
treated to level H3. All sawn timber to be branded as complying with the requirements of
AHQC (Australian Hardwood Quality Council).

TIMBER CONNECTIONS: Structural fasteners shall be located in sound timber avoiding
timber defects. Fasteners shall be installed in accordance with Manufacturer’s instructions.
All bolts, nuts, washers, nail plates and brackets to be hot dipped galvanised to AS 1650.
Additionally, bolt shanks and washers bearing against timber shall be protected with Dulux
Amercoat 385 applied in accordance with the manufacturer’s specification and properly
cured before installation. Bolt holes to be 10% greater than the nominal bolt sizes. Position
bolts to facilitate tightening. Coat all bolt shanks with CN Emulsion before installation. Bolts
to be snug tight (do not over tighten). Washers to be placed under all bolt heads (except
where cuphead bolts specified) and nuts.

TIMBER QUALITY: Timber shall be graded and audited under the Australian Hardwood
Quality Control Program. At the time of grading, the bottom and sides of the plank shall
conform to Structural Grade No. 2 (for Forest Red Gum Structural Grade 1) (AS 2082)

PRESERVATIVE TREATMENT: Treatment, natural durability classes and combinations
thereof shall conform to AS 1604, TUMA (Timber Utilisation and Marketing Act Qld 1987)
and TMA (Timber Marketing Act NSW 1977). Sapwood shall be treated to Level H3 in
accordance with TUMA with copper azole. A certification of treatment shall be provided.

SPECIES: Timber shall be selected from the following species.
spotted gum
tallowwood
forest red gum
ironbark
blackbutt (Qld sourced and vein free)

TOLERANCES: Unless noted otherwise, the actual cross sectional dimensions of the timber
may vary from the dimensions stated by the following;
width                +_ 3mm
thickness            -0, +2mm
length               0
length (cut to size) +- 5mm

RAILS: Rails fixed to each pier with 2 No. x M12 cuphead bolts. Countersink washer and nut
and fill with flexible sealant. Where rails require joining, a ‘Halved lap’ joint shall be used.

FENCE PANELS: Fix fence panels to posts with galvanised pressed metal fixings Install
panels with 100mm ground clearance.




EDAW Aust                             Page 25                        February 2008