Viridian III Technical Specification OPW1 [As Published] · 142008.256

                                                                        VIRIDIAN III - Landscape Works

7.     TIMBER WORK


7.1    TIMBER SIZES
Supply and install timber structures, furniture and fixtures as following and as detailed.

TIMBER SEATING TYPE S17 (CUSTOM TIMBER SEATS)
Batten        75 x 50        F14 Kiln Dried Class 1 HWD                     DAR, 2 Coats
                                                                            Sikkens HLS & 2
                                                                            Coats Sikkens Filter
                                                                            7

BRIDGE AND DECK STRUCTURES
Boardwalk    120 x 35      F17 DECKWOOD                                     TBC

7.2    TIMBER QUALITY

7.2.1 SAWN / DRESSED TIMBER (EXCLUDING DECKING)
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).

7.2.2 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.

7.2.3 PROTECTIVE TIMBER COATINGS
Coat end grain of bearers, joists and decking with CN Emulsion. Coat interface between all
timbers with CN Emulsion before assembly. Coat all timbers with 2 coats of CN Oil on all
sides prior to fixing.

7.2.4 TIMBER QUALITY
Only timber species suited to exposed decking will be supplied. 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) while the exposed surface of the deckwood shall conform to
the following.

Freedom from the following on the sawn upper face;
Loose and unsound knots
Shakes
Loose Gum Veins
Knot Holes
Termite Galleries
Want, wane and bark
Checks wider than 1mm
EDAW Aust                             Page 23                        February 2008