Hoop Pine

Blonde Timber Species

Species Name: Hoop Pine

Botanical name(s): Araucaria cunninghamii

Size and location information: A large tree attaining 50 m in height and 1.8 stem diameter. It usually has a straight cylindrical trunk. The bark in mature trees is rough and dark brown to nearly black in colour, while in young trees it is smooth with a tendency to peel off around the stem circumference. The hoops are apparent when bark is stripped from the trunk.

Occurs naturally in drier rainforests from Hastings River, New South Wales, to Far North Queensland and as far inland as 300 km in some places. It is also grown in plantations, mainly in southern Queensland. Outside Australia it extends to Papua New Guinea.

Sawn timber of this species is readily available, mainly from plantation grown trees.

Description: The heartwood ranges from pale cream to light yellow-brown with little difference between heartwood and sapwood. Very fine and even textured. Growth rings usually visible but indistinct.

Density: Green: kg/m3 Dry: 560kg/m3

Janka Hardness Rating:

Shrinkage: 2.5% radial, 3.5% tangential

Durability: In ground: Class 4 Above ground: Class 4

Lyctids Susceptibility: No

Termite Resistance (AS3660): No

Strength Group: S6/SD5

Fire Hazard properties:

Workability
Machines and turns well to a smooth surface. No difficulty has been experienced with the use of standard fittings and fastenings. Can be satisfactorily bonded using standard procedures. Will readily accept stain, polish and paint.

Uses:
Engineering. Preservative treated poles for pole frame construction, power poles.

Construction. General purpose softwood used as seasoned dressed timber in general house framing, flooring, lining, mouldings, laminated beams. Preservative impregnated for external or round form in fencing, pergolas, landscaping, retaining walls, playground equipment. Also used as structural plywood and particleboard.

Decorative. Furniture, plywood, joinery, turnery, carving.

Others. Boat building (masts, planking, deck beams, frames, marine plywood), aircraft construction, wood wool, paper products, arrow shafts, broom handles, cooperage, beehives, brushware, dowling, blind rollers, draughtman's implements, boat oars, musical instruments (violin and guitar bellies), scaffold planks, match splints.

Availability:
Plentiful, except larger end sections.

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