Please note: Some of these reports are restricted access.
- Experimental testing of high capacity screwed connections in Douglas-fir CLT
SWP-T119 - Access: unrestricted.
This report presents experimental results of high capacity hold-down connections in Douglas-fir Cross Laminated Timber (CLT) using self-tapping screws installed with mixed angles (inclined and 90° angle to the timber…
- Douglas-fir Regional Processing Strategy: Douglas-fir Strategy
SWP-T117 - Access: unrestricted.
Wooden It Ltd has been asked by the Specialty Wood Products research initiative (SWP) to prepare a paper on the regional strategic processing options available to growers of Douglas-fir (Pseudotsuga…
- Douglas-fir Processing Opportunities: Douglas-fir Strategy
SWP-T113 - Access: unrestricted.
Douglas-fir, as the second most widely grown exotic species in New Zealand, has an important role in New Zealand forestry and all wood consuming industries. Its greatest asset lies in…
- Experimental testing of high capacity screwed and nailed connections in Douglas-fir CLT
SWP-T098- - Access: unrestricted.
This report presents experimental results of two project tasks. The first task is to study withdrawal behaviour of self-tapping screws (STS) in Douglas-fir CLT by conducting 167 withdrawal tests. It…
- Dimensional Stability of Specialty Species (final report)
SWP-T090 - Access: unrestricted.
Changes in the moisture content of wood changes its dimensions. The magnitude of these changes (dimensional stability) can have a large impact on how the wood performs in service. Poor…
- Implementation of genomic selection in provenance/progeny test of Douglas-fir
SWP-T084 - Access: NZFFA membership. This SWP report shall at all times be kept confidential and not directly or indirectly be made available to anyone who is not an SWP member.
Two Douglas-fir progeny trials planted in Kaingaroa and Gowan Hill in 1996 were assessed in 2007 and re-assessed in February 2017. Since this material contains genetically broad material coming from…
- Evaluation of wood stiffness in Douglas-fir progeny test FR280_2 and FR280_3
SWP-T075 - Access: unrestricted.
The key outcome from this research is that wood stiffness was found to be moderately heritable, had low genotype by environment interaction and good potential still exists for improvement in…
- Dimensional Stability of Specialty Species (interim report)
SWP-T074 - Access: unrestricted.
Dimensional changes caused by changes in wood moisture content (dimensional stability) can have a large impact on how the wood performs in service. Poor dimensional stability can lead to cracking,…
- Identifying processing opportunities for key specialty tree species; - processing options analysis using the WoodScape model
SWP-T073 - Access: unrestricted.
The Specialty Wood Products Research Partnership wish to know where there are opportunities to develop processing of Douglas-fir, Cypress and Eucalyptus species (nitens and fastigata). A previous report covers the…
- Identifying processing opportunities for key specialty tree species – resource analysis
SWP-T068 - Access: unrestricted.
This report covers the current and projected supply of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), Cypresses and Eucalyptus nitens (Deane & Maiden) Maiden across all the major wood supply regions of…
- The decay resistance of some wood species used as framing - Progress report on the condition of samples
SWP-T064 - Access: Executive. This SWP report shall at all times be kept confidential and not directly or indirectly be made available to anyone who is not an SWP member.
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…
- Core funded aligned research on insects and fungi on species other than radiata pine 2017/2018
SWP-T061 - Access: unrestricted.
Plantation species other than Pinus radiata (radiata pine), specifically Douglas-fir and eucalypts, form an important part of a diversified forest estate. Douglas-fir is planted over approx. 105,000 ha. and is the most…
- LVL Stiffness Calculator User Guide
SWP-T059 - Access: unrestricted.
This software is only intended to be used as a decision tool that enables questions to be asked about the potential suitability of a wood resource being able to supply a range of LVL grades.…
- Douglas-fir breeding and genomics, Specialty Wood Products Research aligned SSIF
SWP-T058 - Access: unrestricted.
Douglas-fir research in the SWP programme has taken a huge step towards testing genomics for implementation of genomic selection methodology in the breeding programme. Genomics research has been funded through…
- Experimental studies on rolling Shear Strength properties of Douglas fir CLT and Monotonic Behaviour of Dowelled Connections
SWP-T053 - Access: unrestricted.
Cross laminated timber (CLT) production and research in NZ is currently dominated by Radiata pine. However, there is a significant resource of Douglas-fir (D. fir) available in NZ, not widely processed on-shore.…
- Evaluation of the Ernslaw One Douglas-fir progeny tests
SWP-T049 - Access: unrestricted.
This project evaluates a Douglas-fir open-pollinated progeny trial established on two New Zealand sites (Gowan Hill and Tramway), using seedlots from three Oregon (US) seed zones. The material was measured…
- Thermal Modification of Douglas fir for Improved Durability
SWP-T047 - Access: unrestricted.
Douglas fir has been thermally modified at two temperatures; 220°C and 230°C (each for 2 hours). These modifications are expected to improve the durability of the sapwood, while maintaining the…
- Development of the Douglas-fir Productivity Spatial Surface using the Process-based model 3-PG
SWP-T038 - Access: unrestricted.
The objective of this report was to provide a New Zealand-wide productivity surface for Douglas-fir. This output addresses limitations of an earlier study of Douglas-fir spatial productivity that was based…
- Initiation of genomic selection research, collection of cambium and extraction of DNA from a Douglas-fir breeding programme
SWP-T034 - Access: unrestricted.
The implementation of genomic selection (GS) in a Douglas-fir breeding programme has been initiated within the Specialty Wood Partnership Programme (SWP), to explore the potential for genomic tools to increase…
- Economic comparison of traditional and genomics breeding for Douglas-fir
SWP-T033 - Access: unrestricted.
An economic analysis was undertaken to compare the value of the genomic and traditional breeding programmes for Douglas- fir in New Zealand. This report also attempts to demonstrate the value…
- Phenotypic assessment and quantitative genetic analysis of two Douglas-fir progeny tests
SWP-T032 - Access: unrestricted.
Two Douglas-fir progeny trials planted in Kaingaroa and Gowan Hill in 1996 were assessed in 2007 and re-assessed in February 2017. These two progeny trials are also training populations in…
- Scion’s core funded experiments on scCO2 wood extracts (proof of concept)
SWP-T013 - Access: unrestricted.
Initial experiments to carry out scCO2 (supercritical fluid) extractions were undertaken on two species of interest: Douglas fir and Eucalyptus nitens and four tissue types: leaves/needles, bark, sapwood and heartwood. The…
- Douglas-Fir Optimised Engineered Lumber (OELTM) Trial
SWP-T007 - Access: unrestricted.
The OELTM (Optimised Engineered Lumber) technology produces structural products with known, uniform and reliable properties. There is financial advantage derived from the fact that all the merchantable OELTM production output is certified…
- Breeding plan for the development of Douglas-fir (Pseudotsuga menziesii var. menziesii) in New Zealand
SWP-T003 - Access: unrestricted.
Douglas-fir is renowned for its stiff wood and is one of the finest structural timbers in the world. Eighty per cent out of 105,000 hectares planted Douglas-fir in New Zealand…
- Results of assessments in FR375, Beaumont controlled-pollinated 1999 Douglas fir progeny trial
SWP-T001 - Access: unrestricted.
The 1999 controlled-pollinated Douglas-fir trial at Beaumont (FR375) was designed to compare selections from the first Douglas-fir breeding population. They had been selected as the best individuals in the best-adapted…