Radiata Pine has a variety of structural makes use of together with decking, fencing, exterior cladding, window sashes, pergolas, landscaping, shingles, barge boards and exterior trim
Untreated, it may be used for furnishings, mouldings, trim and panelling. Panel merchandise, corresponding to plywood, MDF and laminated veneer lumber, are additionally obtainable from radiata pine sources.
Sustainabilty of Provide
Radiata pine is grown commercially in New Zealand as an unique species from the Monterey peninsular in California. The vast majority of plantation forests are Forest Stewardship Council licensed.
The Useful resource Administration Act 1991 locations a number of necessities on forest growers, together with the necessity to think about employment, social, cultural and environmental impacts. This leads to a stage of environmental duty that doesn’t exist in different nations.
As well as, 80 % of plantation forest homeowners have adopted the New Zealand Forest House owners’ Environmental Code of Observe for Plantation Forestry (2007). The code of observe covers areas together with the safety of waterways, endangered species, historic websites, sediment management and the administration of gasoline, oil and wastes.
Afforestation with Radiata pine rehabilitates beforehand farmed soils by decreasing compaction brought on by inventory, with soil situation enhancing with subsequent rotations.
Abstract reality sheet on Radiata Pine (.pdf)
Radiata Pine Glulam Use
Botanical title: Pinus radiata
Different frequent names: Radiata pine, Monterey pine, Pinus insignis
Energy: Radiata pine is a flexible and available timber, appropriate for all kinds of end-use functions.
Sturdiness: Low stage remedy corresponding to boron is beneficial to future-proof towards insect assault in areas fully protected against moisture, corresponding to furnishings and the framing of inner partitions of buildings. The timber is well handled for all Hazard Class functions.
Finishes: Radiata pine is well processed, dried and handled, and can take staining and coating. It’s used along side a variety of structural adhesives.
Working properties: Assessments have confirmed that radiata pine machines properly for many functions and compares favourably with quite a lot of different internationally traded timbers.
Look: The heartwood of radiata pine is a good gentle brown to chestnut brown in color, the sapwood is creamy white.
Radiata pine heartwood is a good, gentle brown to chestnut brown color, the sapwood is creamy white. Resin canals are current as high quality brown traces within the latewood a part of the expansion rings, particularly on radial surfaces, and these is usually a helpful technique of identification. Texture is okay however uneven.
The distinction in color and texture between early and latewood bands (development rings) in flat-sawn timber is comparatively reasonable in contrast with different pines and conifer species. The veneer has a moderate-to-high lustre. Frequent options in most Pinus species, together with radiata pine, are: knots, cone stem holes and pine-needle flecks.
Radiata pine is a flexible and available timber, appropriate for all kinds of end-use functions. It produces wooden that could be very acceptable to the development trade. The bark is wealthy in tannins and appropriate to be used within the manufacture of adhesives; it additionally incorporates some wax, which can have attainable use in water repellents. It’s appropriate for framing, industrial makes use of, posts, cladding, decking, inside finishes and trims, and on a regular basis furnishings.
Radiata doesn’t start to type heartwood till it’s about 15 years previous and types it on the fee of 1 ring each two years. Many of the wooden, due to this fact, is easy-to-dry and easy-to-treat sapwood. This is a bonus over many Northern Hemisphere conifers, that are largely heartwood.
Low stage remedy corresponding to boron is beneficial to future-proof towards insect assault in areas fully protected against moisture, corresponding to furnishings and the framing of inner partitions of buildings. As a result of radiata pine is well handled, the timber may be obtained to present acceptable sturdiness in any of the Hazard Lessons from H1 to H6.
At 12 % moisture content material, the density of radiata pine varies from 560 kg/m3 from low-altitude development websites from the Waikato northwards, to 460 kg/m3 in timber provided from Otago and Southland. The typical density determine for the entire nation is 500 kg/m3.
Many of the density variation is expounded to the typical temperature through the rising season: the cooler the positioning, the decrease would be the wooden density, therefore the lower with altitude and latitude. Please observe these comparative measures of energy are “laboratory” values utilizing standardised brief lengths of clear timber.
These is not going to be the identical energy properties as structural lengths of timber. For the properties of structural size timber please see the tables below the structural design part.
Mechanical properties range with density, and the presence of knots, sloping grain and different pure options. For timber free of those pure options (clear wooden), of common density, from bushes felled at 30 years of age and the typical properties measured on small specimens (20 x 20mm cross part) are:
Modulus of elasticity 8.23 GPa Bending energy 85.Eight MPa Compression energy parallel to the grain 36.8 MPa Aspect hardness (refers to indentation) 3.64 kN Shear energy parallel to the grain 11.6 MPa Finish hardness 4.76 kN
Machining checks have confirmed that radiata pine compares favourably with quite a lot of different internationally traded timbers. Most wooden merchandise require machining in a single type or one other.
The machining traits of any wooden species may be as vital as its energy, hardness or sturdiness in deciding which species is finest for a given finish use.
The commonest type of machining is planing, intently adopted by shaping and turning. Cross-cutting, boring, mortising and sanding are additionally frequent forms of machining. A comparability with some North American species is proven within the following desk:
Species Planing Shaping Turning Standing Radiata Superb Wonderful Good Very Good Ponderosa pine Honest Wonderful Honest Very Good Douglas fir Honest Wonderful Poor Very Good Western hemlock Poor Good Poor Very Good
For additional info check with the next paperwork and hyperlinks:
ITM Timber Remedy (.pdf)
BRANZ remedy diagrams -(.pdf)
Division of Constructing and Housing web site
- The corewood space – maybe 4 to 5 development rings in diameter from the central pith – incorporates low-density wooden that shrinks excessively in a longitudinal path; it additionally incorporates spiral grain, which may result in twisting in sawn timber.
The grading guidelines for Pinus species take this facet into consideration. Much less fascinating options to observe for when working with this timber embody:
- resinous pockets;
- checking marks;
- darker orange bands of compression wooden and presence of pith.
- Handled radiata pine is appropriate for the next functions:
- structural makes use of;
- exterior cladding;
- window sashes;
- barge boards;
- exterior trim.
Inside makes use of for untreated timber embody:
Strip and tongue-and-grooved flooring is unsuitable, except from hardened radiata pine merchandise.
Panel merchandise, corresponding to plywood, MDF and laminated veneer lumber, are additionally obtainable from radiata pine sources.
- Case Examine
- Fale Pasifika
The flexibility of Glulam radiata pine as soon as once more enabled essentially the most cost-effective answer to a fancy construction. Established types of development, that are not attainable utilizing conventional supplies, may be successfully replicated utilizing manufactured glulam. This venture required an genuine appear and feel to the standard fale design, together with the necessity for hid joints. The principle 200mm diameter curved glulam frames – every member 14m lengthy have been hand planed within the manufacturing unit to attain the rounded end.
Structural Engineer: H.L.Ok. Jacobs
Radiata pine is plentiful, and available from all kinds of suppliers. Discuss with the Suppliers database or go to the NZ Farm Forestry Affiliation Market
Forest statistics Ministry of Main Industries statistics present that in the present day, there’s an estimated forested space of 1.6 million hectares of radiata pine, 89% of the whole plantation forested space. Go to the Ministry of Main Industries web site for additional info and statistics or FOA Details and Figures