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24 month evaluation of novel UV protection systems. Second Year Report 2004/05

https://library.fpinnovations.ca/fr/permalink/fpipub4530
Auteur
Morris, Paul I.
McFarling, S.M.
Date
March 2005
Édition
41317
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Morris, Paul I.
McFarling, S.M.
Collaborateur
Canada. Canadian Forest Service.
Date
March 2005
Édition
41317
Genre du document
Research report
Description physique
19 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Preservatives tests
Preservatives
Série
Canadian Forest Service No. 35;3226
W-2134
Localisation
Vancouver, British Columbia
Langue
English
Résumé
A transparent coating with long-term performance could help wood maintain its share of residential markets against material substitution and potentially expand markets in recreational property and non-residential buildings. While transparent coatings can be made reasonably resistant to UV some UV likely penetrates to the wood and by necessity clear coatings are transparent to visible light. Visible light can also cause damage over the long term thus the underlying wood needs additional protection. Four novel UV protection systems were tested as pre-treatments on uncoated wood and under three coatings, a water-based film forming coating, a water-based acrylic varnish and a solvent based water repellent. Samples were exposed to natural weathering facing South at 45° at a test site in Gulfport, Mississippi, in collaboration with the USDA Forest Products Laboratory. The test material was inspected every six months for discolouration, mold and stain, coating water repellency, flaking, erosion and cracking and substrate condition. After 24 months exposure, coatings over the combination of UV absorber and lignin stabilizer identified by Stephen Ayer were performing better than the same coatings applied over the combination recommended by Ciba and coatings over both pre-treatments were performing substantially better than controls with no pre-treatment. Projection of fitted curves beyond the data appears to indicate that pretreatment may double the life expectancy of the coating. There was no consistent effect of the synergists on either combination at this time.
Preservatives - Tests
Finishes - Exterior - Tests
Documents
Moins de détails

Aboutage à entures multiples : qualité des produits

https://library.fpinnovations.ca/fr/permalink/fpipub42377
Auteur
Mohammad, M.
Date
May 2004
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Mohammad, M.
Collaborateur
Canada. Ressources naturelles
Date
May 2004
Genre du document
Research report
Description physique
69 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Building Systems
Sujet
Specifications
Joints
Specification
Design
Série
Valeur au bois no FCC 3
Localisation
Sainte-Foy, Québec
Langue
French
Résumé
Ce rapport décrit les résultats d’études en cours ou antérieures réalisées par Forintek sur les méthodes utilisées pour l’aboutage du bois et la qualité des produits. Il donne une description détaillée des différents paramètres susceptibles d’affecter le procédé d’aboutage et la qualité du produit fini. Il contient également une masse de renseignements publiés dans le cadre d’ateliers, de conférences ou de revues techniques. Cette information a été regroupée et intégrée dans un format simplifié de façon à être utilisable dans la fabrication des bois aboutés. L’un des chapitres porte sur le processus de qualification et de contrôle de la qualité des bois de charpente aboutés et décrit les normes canadiennes de produits spéciaux applicables. On trouvera à la fin de chaque section un paragraphe traitant d’idées de recherche novatrices, de questions importantes pour l’industrie canadienne du bois abouté et de lacunes dans les connaissances.
Joints and fastenings - Design
Joints and fastenings - Specifications
Documents
Moins de détails

Acoustic performance of wood-frame buildings

https://library.fpinnovations.ca/fr/permalink/fpipub42306
Auteur
Hu, Lin J.
Date
March 2005
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Hu, Lin J.
Collaborateur
Canada. Canadian Forest Service
Date
March 2005
Genre du document
Research report
Description physique
44 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Acoustic
Série
Canadian Forest Service No. 3
Localisation
Sainte-Foy, Québec
Langue
English
Résumé
Commercial and multi-family residential construction represents a growth area for the Canadian wood products industry. To capitalize on this opportunity, a thorough understanding of the necessary products and system attributes will be essential. Adequate levels of noise/sound control in multi-family buildings are mandatory requirements of building codes in Canada, the United States, Europe, and most developed Asian countries. In many jurisdictions, these requirements are as strictly enforced as those for structural sufficiency and fire safety. Much effort has been spent on evaluation of sound transmission class (STC) and impact sound insulation class (IIC) of floor and wall assemblies and on studies of flanking transmission in multi-family dwellings in Canada. However, continuing occupant complaints of poor acoustic performance in wood-frame buildings that appear to have been built according to wall and floor construction practices recommended in building codes suggest the existence of gaps in current noise control techniques. Forintek initiated this project to investigate the relative importance of noise transmission in wood-frame residential buildings in comparison with other building serviceability issues, and to conduct a pilot study to examine construction designs of wood-frame buildings that exhibit unsatisfactory and satisfactory noise control and to identify existing gaps in current noise control techniques. A literature review and survey of 123 occupants of wood-framed multi- and single-family residential buildings was conducted to determine the relative importance of noise transmission in comparison with other building serviceability attributes. Case studies were conducted on construction details and designs of six new wood-frame condominiums and one single family-house that were built according to code requirements and recommendations for controlling noise transmission. We found that the general public had high expectations regarding adequate acoustic privacy. Even single- family house builders considered low sound transmission important. The multi-family building occupants ranked “sound insulation” the most “important” serviceability attribute, while single-family occupants were most concerned with “water penetration and condensation”. The lowest level of “satisfaction” was given by all respondents to “noise transmission” for their current residences, including single-family occupants, who had ranked it as not being so “important”. The case studies revealed that, current construction practices were much more effective in controlling airborne sound transmission than impact noise. The footfall noise transmission from stairs through the walls is still an unresolved issue that is not considered in the current Canadian Building Code. The low frequency footfall noise transmission between vertically-stacked units was the common complaint in some of these buildings. With no requirement for impact sound insulation in the current National Building Code of Canada, and with our existing knowledge gap concerning low frequency footfall noise transmission problems and solutions to control them, builders, acoustics consultants and design engineers have simply tended to blame wood building materials for noise-related complaints. We concluded that if we are to satisfy the occupants of both single-and multi-family wood-frame buildings and to provide confidence for builders and design engineers in wood-frame construction with satisfactory acoustic performance, a much greater effort is needed to improve sound insulation including development of better sound insulated wood-frame systems and building materials as well as retrofitting techniques. Acoustic performance will be a critical factor for the wood products industry in gaining a greater share of the multi-family construction market and in competing with other building materials.
Acoustic emissions
Documents
Moins de détails

Analyse comparative des différents types de scanneurs d'équarris

https://library.fpinnovations.ca/fr/permalink/fpipub5403
Auteur
Bédard, P.
Fournier, Francis
Date
February 2005
Édition
42282
Genre du document
Research report
Domaine
Wood Manufacturing & Digitalization
Auteur
Bédard, P.
Fournier, Francis
Date
February 2005
Édition
42282
Genre du document
Research report
Description physique
18 p.
Secteur
Wood Products
Domaine
Wood Manufacturing & Digitalization
Champ de recherche
Advanced Wood Manufacturing
Sujet
Trimming
Scanners
Optimization
Série
General Revenue 4497
Localisation
Sainte-Foy, Québec
Langue
French
Résumé
On retrouve actuellement en milieu industriel diverses technologies de scanneurs d’équarris utilisant des configurations soit linéaires ou transversales pour l’optimiser le débitage secondaire. Puisque aucune donnée n’est disponible quant à la performance ou les avantages d’un système par rapport à un autre, Forintek a entrepris de réaliser une étude comparative. Un échantillon d’équarris a été mesuré dans des conditions industrielles avec trois scanneurs différents, un transversal et deux linéaires, ainsi qu’en laboratoire à l’aide de la technologie de rayon x, servant de référence. La comparaison des rendements obtenus avec chaque scanneur étudié a été réalisée par le biais de simulations à l’aide du logiciel Optitek. Comme la plupart des systèmes de positionnement d’équarris présentent un niveau de précision limité, des erreurs de positionnement ont été appliquées par simulation pour obtenir des résultats réalistes. Les résultats ont démontré que les erreurs de positionnement ont un impact majeur sur l’optimisation du débitage secondaire. Avec le niveau d’erreur moyen observé en industrie, aucune technologie de scanneur ne se démarque nettement des autres. Toutefois, en améliorant considérablement la précision des systèmes de positionnement, on pourrait observer la tendance suivante : le scanneur transversal s’avèrerait le plus précis avec un niveau d’efficacité de 2 % supérieur au système linéaire à 4 caméras, et ce dernier serait de 2 % supérieur au système linéaire à 2 caméras. La technologie du rayon x offrirait un excellent potentiel d’amélioration par rapport aux technologies actuelles puisqu’elle permettrait d’accroître l’efficacité du débitage de 6 % en ne considérant aucune erreur de positionnement.
Scanners
Breakdown, secondary
Trimming
Edging
Optimization
Documents
Moins de détails

Analyse comparative des équipements MSR

https://library.fpinnovations.ca/fr/permalink/fpipub2814
Auteur
Desjardins, Richard
Bédard, P.
Date
May 2005
Édition
39444
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Desjardins, Richard
Bédard, P.
Date
May 2005
Édition
39444
Genre du document
Research report
Description physique
30 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Building Systems
Sujet
Stresses
Saw mills
Equipment
Grading
Série
Projet General Revenue No 3242
E-4797
Localisation
Québec, Québec
Langue
English
Résumé
Cette étude compare les performances des différentes machines de classement MSR utilisées actuellement dans l’industrie canadienne du bois de sciage. Cinq machines ont été retenues : La HCLT-7200 de Metriguard, la Dart de Eldeco, la TMG du CRIQ, la Dynagrade de Dynalyse AB et la XLG de Coe Mfg.
Lumber manufacturing
Sawmills - Equipment
Grading - Lumber - Stress, Mechanical
Documents
Moins de détails

An analysis of the North American home siding market

https://library.fpinnovations.ca/fr/permalink/fpipub1257
Auteur
Tabarsi, E.
Date
May 2004
Édition
37714
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Tabarsi, E.
Collaborateur
Canada. Canadian Forest Service.
Date
May 2004
Édition
37714
Genre du document
Research report
Description physique
76 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Market Analysis
Sujet
United States (USA)
Siding
Canada
Markets
Série
Canadian Forest Service No. 34;3918
W-2089
Localisation
Vancouver, British Columbia
Langue
English
Résumé
In this study builders and professional repair and remodellers were given a chance to evaluate 12 of the most common home siding products available in the market today. The products were evaluated on seven different attributes: price, maintenance, installation, attractiveness, status/image, fire resistance, and durability. Overall, fire resistance, attractiveness, and maintenance were selected as the most important product attributes by single-family homebuilders and repair & remodellers. The majority of respondents stated that their customers had a strong influence on their final choice of siding materials. In addition respondents were asked for their opinion regarding product popularity, rate of installation, substitution trends, and their choice of siding products for different categories of homes.
Siding
Markets - North America
Documents
Moins de détails

An evaluation of the detection capacity of automated defect detection systems

https://library.fpinnovations.ca/fr/permalink/fpipub42349
Auteur
Rancourt, V.
Date
March 2005
Genre du document
Pamphlet
Domaine
Sustainable Construction
Auteur
Rancourt, V.
Date
March 2005
Genre du document
Pamphlet
Description physique
4 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Scanning
Série
Technology Profile ; TP-04-05E
E-4005
Localisation
Sainte-Foy, Québec
Langue
English
Résumé
Using automation to maximise yield from increasingly rare and costly raw materials is a solution that can help secondary wood producers improve their profitability. By integrating an automated defect detection system, lumber producers can potentially increase production output and grade recovery, helping them to strengthen their strategic business advantage. To develop a reference tool to assist in the choice of an appropriate defect detection system, Forintek conducted a detection capacity evaluation of commercially available equipment. Nineteen (19) manufacturers who work in the area of defect detection in lumber were contacted; of these, four agreed to participate in the study. The project objectives were based on requests from the producers: the evaluation focussed on the detection capacity of specific defects and not on the performance of the overall system. Defects were identified and an experimental evaluation was conducted to determine if the equipment recognised the defects or not. A decision tool based on a multi-criteria analysis has been proposed in the completed project report, to help producers identify the most appropriate defect detection system. However, no evaluation can be offered for the overall performance of the systems assessed, as production needs differ from producer to producer.
Defects - Detection
Documents
Moins de détails

An evaluation of the detection capacity of automated defect detection systems

https://library.fpinnovations.ca/fr/permalink/fpipub42284
Auteur
Rancourt, V.
Date
July 2004
Genre du document
Research report
Domaine
Sustainable Construction
Auteur
Rancourt, V.
Date
July 2004
Genre du document
Research report
Description physique
85 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Lumber
Value added
Manufacturing
Série
General Revenue
E-3923
Localisation
Sainte-Foy, Québec
Langue
English
Résumé
The market for hardwood component production is currently affected by low-cost components importation from Asia. Industrial automation is an actual option for the secondary manufacturing industry to counter this situation. Integrating a defect detection system is a complex process and selecting the right system is even more complicated. This study proposes an approach for assessing the defect detection capabilities of different systems as well as a decision support tool to guide the producer toward the adequate equipment. The study is limited to assessing defect detection capacities; the overall system performance, the optimization software and the cutting equipment are not analyzed. Understanding the origin and characteristics of defects to be detected and the capacities and theoretical limits of vision technology are prerequisites. A sampling with defects that, due to properties such as their small size, are hard to detect, is assessed by each system and the results are compared. To date, the assessed systems are not capable of detecting all defects pertaining to hardwood component production. A decision support tool will make it possible to methodically select the equipment most appropriate to the producer’s needs and leads to an enlightened decision in terms of the producer’s priorities and expectations.
Defects - Detection
Lumber
Documents
Moins de détails

An investigation into data communications standards for total process control. Final Report 2004/05

https://library.fpinnovations.ca/fr/permalink/fpipub37722
Auteur
Niessen, R.
Date
April 2005
Genre du document
Research report
Domaine
Wood Manufacturing & Digitalization
Auteur
Niessen, R.
Date
April 2005
Genre du document
Research report
Description physique
16 p.
Secteur
Wood Products
Domaine
Wood Manufacturing & Digitalization
Champ de recherche
Advanced Wood Manufacturing
Sujet
Process control
Automatic control
Série
General Revenue Project No. 3274;3274
W-2145
Localisation
Vancouver, British Columbia
Langue
English
Résumé
Today's machine centres are being increasingly automated but often operate as a collection of isolated machines run by a variety of computer systems. Clearly, such heterogeneous computing and control environments present a formidable barrier to the problem of interoperability. Already there are vendors that provide a partial solution to the problem, since they provide methods of interoperability only between machines that they supply. Vendor-specific methodologies are in general proprietary, and do not inter-operate with any other vendor's equipment. What's needed to facilitate widespread machine-to-machine data exchange is a universal methodology to connect to optimizer data, or any data for that matter, with plug-and-play simplicity. In order to enable enhanced data availability and also to lay the foundations for the evolution of process monitoring and control in the sawmilling industry, this project was undertaken to create a common methodology for vendor-neutral data exchange between machine centres, process monitoring and control systems, and business systems. A task forceª, with members drawn from sawmilling and equipment vendor companies, selected the well-established specifications for data exchange published by the OPC Foundation, a consortium of companies committed to universal data exchange in industry. While these specifications specify standards-based methods for data exchange, the task force recognized that there was an additional layer required to create standard plug-and-play access to sawmill optimizers. This additional standardization layer specifies exactly what data is made available per optimizer type. After testing these ideas for primary breakdown optimizers and PLCs in a sawmill-based pilot project, the task force unanimously adopted the OPC specification and our per-optimizer layer as a practical standard for data exchange in the sawmilling industry. Given this initial success, however, there needs to be a continuing effort to ensure that the evolving sawmill standards eventually are applied to all optimizer types, and that sawmill managers and executives are aware of their benefits. Continuing effort must ensure that multi-vendor support per optimizer type does not result in tag list fragmentation which would undermine the benefits of standards. The methodologies adopted during this project will never become standard in the sawmilling industry unless the majority of sawmillers demand the standard OPC optimizer interfaces defined by this project. ª In this document, “task force” is used interchangeably with “working group”. On 21 March 2002, a standards committee was struck from task force members, but soon lost its meaning when the task force adopted an email list approach to collaboration. The email list was much more inclusive and therefore much larger, and became the defacto “working group”. By project end, the working group consisted of 40 members.
Process control - Automation
Documents
Moins de détails

An overview of onboard computers for monitoring forestry trucks

https://library.fpinnovations.ca/fr/permalink/fpipub40720
Auteur
Carme, Richard
Bulley, Brian
Date
September 2005
Genre du document
Research report
Domaine
Fibre Supply
Auteur
Carme, Richard
Bulley, Brian
Date
September 2005
Genre du document
Research report
Description physique
10 p.
Secteur
Forest Operations
Domaine
Fibre Supply
Champ de recherche
Transportation Infrastructure
Sujet
Vehicles
Time
Global positioning system (GPS)
Advantage
Série
Advantage ; Vol. 6, No. 21
Langue
English
Résumé
FERIC has developed considerable expertise in the use of onboard computers in forestry transportation operations. This report has been prepared in response to member requests for a concise summary of this knowledge. It presents an overview of the technology, the results of case studies, and implementation advice for those who are interested in adopting the technology.
On-board computers
Asset tracking
Vehicle monitoring
Driver monitoring
Fuel efficiency
Cycle time
GPS
Products
Characteristics
Documents
Moins de détails

366 notices – page 1 of 37.