Pine, Hoop

Hoop pine is a softwood widely used in general construction purposes, interiors, and for furniture.

Other Names

Queensland Pine, Colonial Pine, Moreton Bay Pine

Botanical Name

Araucaria cunninghamii

Common Form
Sawn
Species Type

Hoop pine is a Queensland timber whose ease of use has made it popular for general construction purposes, flooring, joinery, shelving and cupboards, furniture, and plywood. When treated with preservatives it is suitable for outdoor uses such as fencing, pergolas, landscaping, retaining walls, and playground equipment. It is also used for a variety of non-architectural and non-building purposes, such as the manufacture of musical instruments, drafting instruments and brushware.
The heartwood ranges from pale cream to light yellow brown with little difference between heartwood and sapwood, though the heartwood is a little darker. It is a very fine and evenly textured wood with a straight grain. The growth rings are visible but not distinct and the figure is plain or mottled. 
The sapwood of hoop pine is easily treatable with preservatives, but the heartwood is not. It is resistant to lyctid borer attack, but not to termites. It is of low durability, with the heartwood having a life expectancy of less than seven years above ground and five below. 
Hoop pine machines and turns well, but is not suitable for steam bending. It can be polished, painted and stained with ease, and works well with fittings and fastenings.

Shrinkage

Very Low Low Medium High Very High

Tangential :

3.60%

Radial :

2.50%

Unit Movement Tangential:

0.23%

Unit Movement Radial:

0.18%

Strength Group

Very High

High

Reasonably High

Medium High

Medium

Reasonably Low

Low

Very Low

Unseasoned:

S1

S2

S3

S4

S5

S6

S7

S8

Seasoned:

SD1

SD2

SD3

SD4

SD5

SD6

SD7

SD8

Stress Grade

Structural
No. 1
Structural
No. 2
Structural
No. 3
Structural
No. 4
Structural
No. 5

Unseasoned:

F8

F7

F5

F4

Seasoned:

F17

F14

F11

F8

F7

Density per Standard

Seasoned:

530kg/m3

Unseasoned:

800kg/m3

Joint Group

Very High

High

Reasonably High

Medium

Low

Very Low

Unseasoned:

J1

J2

J3

J4

J5

J6

Seasoned:

JD1

JD2

JD3

JD4

JD5

JD6

Colour

  White, yellow, pale straw to light brown Pink to pink brown Light to dark red Brown, chocolate, mottled or streaky
   

Mechanical Properties

Modulus of Rupture - Unseasoned:

48

Modulus of Rupture - Seasoned:

90

Modulus of Elasticity - Unseasoned:

10

Modulus of Elasticity - Seasoned:

13

Maximum Crushing Strength - Unseasoned:

26

Maximum Crushing Strength - Seasoned:

49

Impact - Unseasoned:

9.3

Impact - Seasoned:

5.7

Toughness - Unseasoned:

Low - up to 15 Nm

Toughness - Seasoned:

Low - up to 15 Nm

Hardness - Unseasoned:

2.7

Hardness - Seasoned:

3.4

Durability

Low Moderate Reasonably High High
(0 - 5 yrs) (5 - 15 yrs) (15 - 25 yrs) (more than 25 yrs)

In-Ground:

(0 - 7 yrs) (7 - 15 yrs) (15 - 40 yrs) (More than 40 yrs)

Above ground:

(0 - 20 yrs, usually < 5) (21 - 40 yrs) (41 - 64 yrs) (More than 60 yrs)

Marine Borer Resistance:

Lyctid Borer Susceptibility:

Not Susceptible

Lyctid Borer Susceptibility - Other:

Termite Resistance:

Not Resistant

Fire Properties

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

EFH Ignitibility:

0 1 2 3 4 5 6 7 8 9 10

EFH Spread-of-Flame Index:

EFH Smoke-Developed Index:

Critical Radiance Flux - Lower:

For plywood ≥15mm >2.2 and <4.5

Critical Radiance Flux - Higher:

For plywood ≥15mm >2.2 and <4.5

Smoke Development Rate:

For plywood ≥15mm rate is <750
1 - non-combustible 2 - reasonably non-combustible 3 - slightly combustible 4 - combustible

Fire Properties Group
Number:

Group Number - Other:

For plywood, Group Number: 3
For ply ≥6mm, EFH Spread-of-Flame Index: 9, EFH Smoke-Developed Index: 3

Average Specific Extinction Area:

<250

Bushfire Resistance:

Not Tested
Appearance

Hoop pine is a straight grained wood, evenly textured and very fine. The growth rings are not distinct, but they are visible, and the figure is mottled and plain. The heartwood ranges from light yellow brown to pale cream, and although there is little difference in colour between the heartwood and the sapwood, the heartwood is a little darker. Sapwood 7.5 - 15mm wide is often flecked and light brown in colour.

Common Applications

When treated with preservatives hoop pine is suitable for outdoor uses such as fencing, pergolas, landscaping, retaining walls, and playground equipment. The timber is also used for general construction purposes, flooring, joinery, shelving and cupboards, furniture, and as plywood. Hoop pine is also popular for a variety of non-architectural and non-building purposes, such as the manufacture of musical instruments, drafting instruments and brushware.

Workability

Hoop pine glues well and can be painted, stained and polished easily. It machines and turns well, but is not suitable for steam bending. It can be used with standard fittings and fastenings.

Origin of timber
QLD
Also grows in PNG.
Readily Available
QLD
Sawn hoop pine is mostly available in Queensland, veneers are more widely available.
Source of timber
Plantation
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Joinery

Timber joinery offers a classic, stylish touch to any interior or exterior space.
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Fencing

When it comes to fencing, timber is a natural choice. A material that is durable, strong and reliable it compliments almost every outdoor landscape and environment. Clear specification, detailed installation and appropriate maintenance will ensure a timber fence provides a natural and lasting property boundary and back drop for years to come.
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Mouldings

Mouldings are extremely versatile and durable, enhancing the aesthetics of any interior and functioning as the icing on the cake for designs with a focus on beauty and splendour.
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Pergolas

A timber pergola is a practical, functional and attractive way to extend living and entertainment spaces into the outdoors.
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Framing

Since people began building simple shelters, wooden framing has played an important role in shaping structures of many kinds. One of the most popular types of wooden framing is known as lightweight timber construction.
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Flooring

The warmth, strength and natural beauty of timber flooring is enduringly popular in a wide variety of domestic, commercial and industrial applications.

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