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Harvesting of large (up to 80cm diameter) logs on rotations of less than 30 yer is now the normal. They are typically healthy with no insect attack,decay,ternal splits or growth stresses.
Many of the trees are pruned while young to produce 'clearwood' and restrct the knotty core to a small cylinder surrounding the pith.
Radiata log grades cover a wide range and allow buyers to specify their preffered quality and match with the recommended range of uses. This is very important because there are significant quality variations between some log grades. 'Pushing' some lower grade log into a higher-end application is lkely to result disappointment.
The quality of radiata log is determined by its size (diameter and length), shape (straightness and taper), branching and wood property features.
New Zealand Radiata Log Types and Recommended Uses
Pruned peeler - High-quality, large, straight logs
For sliced or peeled veneer, ply and decorative overlay veneers |
Industrial Peeler - Large, Straight unpruned logs
Knotty plywood grades and LVL |
Pruned Sawlog - Large, Straight logs
Clear and appearance-grade lumber, and industrial grades |
Small Branch Sawlog
For high-strength lumber |
Large Branch Sawlog
Temporary construction lumber, packaging and appearance comonents. |
Long Internode Sawlogs - Wide branch clusters
Ideal for recovery of clearwood furniture and joinery. |
Posts and Poles - Small-medium, straight logs
Low spiral grain, for engineering and ground contact; must be chemically treated. |
Fibre and Pulp Logs
Wood but not maching any of the above classes - used for pulp, reconstituded and panel products. |
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Log Export
