Landscape Technical Specification - OPW14/0197

Doonella – Stage C


12.      TIMBER WORK - BOLLARDS



12.1     GENERAL

CROSS REFERENCES

Refer to the General requirements section.

12.1          TIMBER SCHEDULE

12.1.1 BOLLARDS



TYPE                            MATERIAL          SIZE                               FINISH



Bollard Type B1                 Hardwood          Refer to detail 02-904 on          Timber – 2 Coats CN oil
                                Timber            drawing L-4304-STAGE C-904         with 10Y Brown Oxide
Fixed Timber Bollard                                                                 tint in 20lt CN oil.


12.1.1 FENCE



ITEM                       MATERIAL                       SIZE                             FINISH



 F1 Post (incl gate        H4 treated hardwood            100mm x 100mm with 10mm          Timber – 2 Coats CN oil
posts)                                                    arris to verticle sides          with 10Y Brown Oxide
                                                                                           tint in 20lt CN oil.


F1 Top Rail                H4 treated hardwood            100mm x 100mm with 10mm          Timber – 2 Coats CN oil
                                                          arris to top side                with 10Y Brown Oxide
                                                                                           tint in 20lt CN oil.




12.2     TIMBER QUALITY


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 timbers, imported to site or where timber is shown on drawings to be selected from milled
site timbers is to meet the durability and stress grade of class 2. Where timber is in contact with the ground
all timber is to be Durability Class 1. Any sapwood shall be treated to level H4. All sawn timber is 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 are 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) while the exposed surface of the deckwood shall conform to the following:
AECOM                                        14