Specialty Timbers New ZealandSWP technical reports by date
Please note: Some of these reports are restricted access.
- 2024 Eucalyptus stake assessment results
- Access: unrestricted.
December 2024
Group no. Tree Species Index of Condition 1 8 years, 1 month exposure 1 1 E. bosistoana 6.3 2 2 E. bosistoana 7.0 3 3 E. bosistoana… - Growing Alternative Exotic Forest Species Booklet
SWP-T174 - Access: unrestricted.
June 2024
The species featured in this booklet are commercial exotic species, and their wood can be used in product lines that radiata pine is generally not suitable for. The species featured… - Variation in adaptability and productivity between durable eucalypt species in different New Zealand environments
SWP-T164 - Access: unrestricted.
August 2023
This report summarises early results from a total of 14 demonstration trials implemented by the NZDFI established across North Island regions and those in Marlborough, Nelson and North Canterbury. The… - The Specialty Woods Products Research Partnership FINAL REPORT 2015 – 2023
SWP-T170 - Access: unrestricted.
August 2023
This report summarises the technical content and outputs of the SWP. The programme should be considered as initiating the research and development needed to develop a specialty wood products industry.… - The decay resistance of some wood species used as framing - Final report on the condition of samples
SWP-T096 - Access: unrestricted.
July 2023
Sets of framing samples were exposed in high humidity conditions of 85-90% relative humidity and 25 – 27°C. The species included in this test were: Untreated Cupressus lusitanica. Untreated Douglas fir. Untreated Eucalyptus nitens (installation… - Developing fully compatible taper and volume equations for all stem components of Eucalyptus globoidea Blakely trees in New Zealand
SWP-T134 - Access: unrestricted.
July 2023
Background: Individual-tree taper and volume equations are essential for forest management. They provide estimates of volume that are incorporated into plot-level volume equations and also into growth and yield models… - Recalculation of Ovensii Bending Strength and Stiffness
SWP-T154 - Access: unrestricted.
July 2023
In terms of bending stiffness, the C. ovensii achieved the SG6 structural grade, in terms of bending strength, the C. ovensii achieved the SG12 structural grade resulting in an overall grade of SG6. To… - Decay rate of Cypress stakes after two year’s exposure at the Whakarewarewa test site
SWP-T167 - Access: unrestricted.
June 2023
Stakes of Cupressus x ovensii grown in Rotoehu and Riverhead, and Cupressus x leylandii (Leyland cypress) were installed in the Whakarewarewa outdoor test area in April 2021. Untreated radiata pine and CCA H4 treated… - Genetic structure and diversity in the NZDFI Eucalyptus bosistoana and E. argophloia breeding populations
SWP-T168 - Access: unrestricted.
June 2023
This report on SWP Work Plan WP126 is of preliminary nature. It is an unexamined thesis chapter from Seoljong Kim’s PhD thesis, developed at the University of Canterbury under the supervision of… - Experimental Studies on Single and Coupled Douglas-fir CLT Shear Walls with High-Capacity Connections
SWP-T169 - Access: unrestricted.
June 2023
As an engineered timber product, cross-laminated timber (CLT) is currently gaining popularity in New Zealand and globally. This two-year project aims to develop high-capacity Douglas-fir CLT shear wall structures that… - The condition of thermally modified cypress and Douglas fir flat panels after one year’s field exposure
SWP-T171 - Access: unrestricted.
June 2023
After one year exposure at the Whakarewarewa test field site in Rotorua, there was no decay on any of the untreated Cupressus macrocarpa, Cupressus lusitanica, Cupressus x.ovensi and Douglas fir flat panel samples. No… - The condition of thermally modified cypress and Douglas fir decking after one year’s field exposure
SWP-T172 - Access: unrestricted.
June 2023
After one year exposure, there was no decay on any of the untreated Cupressus macrocarpa, Cupressus lusitanica, Cupressus x.ovensi and Douglas fir decking samples. No decay was observed on any of the thermally modified Cupressus… - The condition of Cypress with or without thermal modification L-joints after one year’s field exposure
SWP-T173 - Access: unrestricted.
June 2023
After one year’s exposure, there was no decay on any of the untreated Cupressus lusitanica L-joint samples. No decay was observed on any of the thermally modified Cupressus lusitanica, L-joint samples No decay was… - Evaluation of multi-site progeny test in Eucalyptus fastigata
SWP-T163 - Access: unrestricted.
June 2023
Progeny trials for Eucalyptus fastigata in the third cycle, planted in 2009 and 2012 in Kaingaroa (compartment 333 and 605), Waihaha and Waihapua were assessed at age of 8 for growth and… - The decay resistance of alternative species in an accelerated framing test Assessment of decay after one year’s exposure
SWP-T160 - Access: unrestricted.
March 2023
Sets of framing samples were exposed in high humidity conditions of 85-90% relative humidity and 25 – 27°C. The species and preservative treatments included in this test were: Eucalyptus fastigata, mixed heartwood\sapwood,…
