The use of high resolution mapping products, increased knowledge of machine/soil impacts and advanced forest landscape modelling offer the opportunity to develop predictive tools to aid in forest operations planning. FPInnovations has been involved in a joint project with the University of New Brunswick and J.D. Irving Ltd. to develop a soil trafficability prediction model to enhance in-block planning and to reduce soil disturbance. This report provides a summary of FPInnovations contributions to this project.
FPInnovations conducted a Mechanical Site Preparation trial with a Lamtrac 8290Q mulcher near Okanagan Falls, B.C. The mulcher was tested on three sites: moderate slope with heavy grass competition; moderate slope with high stumps and moderate to high slash levels; and steep slope with low to moderate slash levels. The Lamtrac mulcher had some difficulty with heavier slash loads, but was able to create acceptable microsites at the target density of 1000–1200 microsites/ha under the three different site conditions.
L’objectif général du projet consiste en l’amélioration de la stabilité dimensionnelle des portes d’armoires à centre mince en limitant au minimum le gauchissement des montants et travers.
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Extremely high density lodgepole pine stands in the Kootenay Region were thinned with mechanized narrow-strip treatments. This trial designed and implemented a sampling protocol to monitor the treatment over time. The initial tree measurements were recorded to provide the foundation to compare the growth and yield and assess the potential for meeting long-term objectives for stand density.
Glulam and laminated veneer lumber protected by a combination of treatment with borate by two processes, and a film-forming coating, were exposed outdoors in an above-ground field test using a modified post and rail test design. After eight years’ exposure, early to moderate decay was found in untreated test units, while those which were borate-treated by either method were generally sound up to six years and showed greatly reduced decay at eight years.
Glulam manufactured from laminating stock of three species pre-treated with ACQ-D or CA was exposed outdoors in an above-ground field test using a modified post and rail test design. After six years’ exposure, early to moderate decay was found in untreated test units, while those which were preservative-treated were completely sound.
Field tests of untreated and preservative-treated glulam beams in outdoor exposure, in ground contact and above ground, were inspected for decay after five years. Copper azole and ACQ-D-treated material was in excellent condition, while moderate to severe decay was present in untreated non-durable material. Early stages of decay were also noted in yellow cedar glulam in the above-ground test. Using galvanized rather than stainless steel fasteners appeared to have a protective effect against decay in untreated material, supporting the hypothesis that zinc from the sacrificial coating on galvanized bolts inhibits germination of basidiospores.
Attracting, retaining and training labor is a challenge for forest operations in North America. FPInnovations attended the Pacific Logging Congress (PLC) in November 2015 where one of the technical sessions focused on attracting and retaining people to the industry, in particular to contractor operations. The majority of the strategies presented in this Info-Note were suggested by logging contractors presenting at the PLC. A few others gleaned from other sources were added as well.
Abstract
Attirer, retenir et former la main-d’œuvre représentent des défis pour les opérations forestières d’Amérique du Nord. FPInnovations a assisté au Pacific Logging Congress (PLC) en novembre 2015, dont l’une des sessions portait sur les meilleures pratiques pour attirer et retenir les employés dans l’industrie, en particulier pour les entrepreneurs. La majorité des stratégies présentées ici ont été adoptées par les entrepreneurs forestiers qui faisaient une présentation au PLC. Nous en avons ajouté quelques autres obtenues d’ailleurs.
This report presents several technologies developed for steep terrain harvesting in New Zealand. The information was collected from on-site visits conducted in early 2015 by the author. Many of the innovative technologies presented here were developed under the auspices of the steep terrain program designed to improve safety and productivity in forest harvesting operations under the FFR vision of “No worker on the slope, no hand on the chainsaw”
The current study aims at evaluating the integrity failure (i.e. passage of hot gases or flames through the assembly) of CLT assemblies connected together using four types of commonly used panel-to-panel joints when exposed to the standard CAN/ULC S101 “Standard Method of Fire Endurance Tests of Building Construction Materials” [1] fire resistance time-temperature curve. The four types of joints include: 1) half-lapped, 2) internal spline, 3) single surface spline and 4) double surface splines. 301009649
There is a need to evaluate TCC systems under fire conditions to understand how shear connectors will perform and might affect the fire performance and the composite action of the assembly. This project evaluates the fire performance of TCC assemblies based on their structural resistance, integrity and insulation when exposed to a standard fire, as well as how mass timber and concrete interact. This study involves full-scale fire resistance tests on composite wood-concrete floors using two types of shear connectors. 301009649
FPInnovations conducted a study of pre-commercial strip thinning treatments in a very high density, naturally regenerated (age class 1) lodgepole pine stand. Semi-mechanized treatments combined mechanized strip-mulching and motor-manual thinning. Both, semi-mechanized and fully mechanized treatments were less costly than conventional motor-manual thinning. Semi-mechanized treatments preserved enough trees to meet post-thinning density objectives. Fully mechanized treatments produced tree densities above provincial minimum stocking standard densities, but below target spacing densities. Even though sufficient trees were preserved, it is unclear whether fully mechanized treatments will be able to meet the long-term stocking objectives.
Biomass sampling and analysis play decisive roles in determining the characteristics and value of the woody biomass fuel used in bioenergy systems in Canada. Sampling and analysis standards help harmonize the procedures that are used to monitor biomass quality. Because there are no Canada- wide biomass sampling standards, facilities that produce and use woody biomass have developed and implemented in-house sampling procedures of varying degrees of complexity. Given that the use of woody biomass in Canada is predicted to increase, the ability to ensure the quality of biomass will become increasingly important in order to control costs and maximize system efficiency.
BIOMASS
Biofuels
Bioenergy
MOISTURE CONTENT
BULK DENSITY
Bark content
Contamination
ASH
Lignin
CARBOHYDRATES
EXTRACTIVES
Abstract
L’échantillonnage et l’analyse de la biomasse jouent un rôle décisif dans la détermination des caractéristiques et de la valeur des combustibles de biomasse ligneuse utilisés dans les systèmes de bioénergie au Canada. Les normes d’échantillonnage et d’analyse contribuent à harmoniser les méthodes utilisées pour évaluer la qualité de la biomasse. Il n’existe pas de normes d’échantillonnage pancanadiennes; les usines qui produisent ou utilisent la biomasse ligneuse ont donc élaboré et appliqué des méthodes d’échantillonnage maison de niveau de complexité variable. Comme on prévoit une augmentation de l’utilisation de la biomasse ligneuse au Canada, les compétences permettant de garantir sa qualité deviendront de plus en plus importantes pour limiter les coûts et maximiser l’efficacité des systèmes.
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FPInnovations, in cooperation with BC Timber Sales and Coast Tsimshian Resources, is in the process of performing a tarping trial in an attempt to maintain low moisture content of pulp logs in the Terrace region.
FPInnovations was approached in January 2015 by the Engineering Brach of the British Columbia Ministry of Forests, Lands and Natural Resource Operations (FLNRO) to assess the state-of-practice of bridge approach alignment design on forest roads, and to make recommendations for the standardization of this process.
This report describes the building, tested floor and wall assemblies, test methods, and summarizes the test results. The preliminary performance data provides critical feedback on the design of the building for resisting wind-induced vibration and on the floor vibration controlled design. The data can be further used to validate the calculation methods and tools/models of dynamic analysis. Originally confidential to FII, they have provided permission to make the report available.
