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Analysis of full-scale fire-resistance tests of structural composite lumber beams

https://library.fpinnovations.ca/en/permalink/fpipub3316
Author
Dagenais, Christian
Date
October 2014
Edition
39980
Material Type
Research report
Field
Wood Manufacturing & Digitalization
FPInnovations Analysis of Full-Scale Fire-resistance Tests of Structural Composite Lumber Beams
Author
Dagenais, Christian
Contributor
Canadian Forest Service
Date
October 2014
Edition
39980
Material Type
Research report
Physical Description
14 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Fire
Resistance
Testing
Structural composites
Beams
Series Number
E 4914
Location
Québec, Québec
Language
English
Abstract
The key objective of this study is to analyze full-scale fire-resistance tests conducted on structural composite lumber (SCL), namely laminated veneer lumber (LVL), parallel strand lumber (PSL) and laminated strand lumber (LSL). A sub-objective is to evaluate the encapsulation performance of Type X gypsum board directly applied to SCL beams and its contribution to fire-resistance of wood elements. The test data is being used to further support the applicability of the newly developed Canadian calculation method for mass timber elements, recently implemented as Annex B of CSA O86-14.
Structural Composites - Properties
Beams - Fire resistance
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Assessing the flammability of mass timber components, a review

https://library.fpinnovations.ca/en/permalink/fpipub53026
Author
Mehaffey, J.R. (Jim)
Dagenais, Christian
Date
February 2014
Material Type
Research report
Field
Sustainable Construction
Fire Consultants Ltd. and Christian Dagenais, Eng., M.Sc. Scientist – Serviceability
Author
Mehaffey, J.R. (Jim)
Dagenais, Christian
Date
February 2014
Material Type
Research report
Physical Description
27 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Building code
Fire
Performance
Design
Timber
Language
English
Abstract
The report concludes with the recommendation that it would be useful to run an extensive set of cone calorimeter tests on SCL, glue-laminated timber and CLT products. The fundamental data could be most useful for validating models for predicting flame spread ratings of massive timber products and useful as input to comprehensive computer fire models that predict the course of fire in buildings. It is also argued that the cone calorimeter would be a useful tool in assessing fire performance during product development and for quality control purposes.
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Assessment of combustibility parameters of structural composite lumber

https://library.fpinnovations.ca/en/permalink/fpipub3149
Author
Dagenais, Christian
Date
March 2014
Edition
39807
Material Type
Research report
Field
Wood Manufacturing & Digitalization
PDF
Ajoutez cet article à votre liste de sélections pour demander le PDF - Add this item to your selection list to request the PDF
. REVIEWERS Jim Mehaffey, Ph.D. CHM Fire Consultants Ltd. Mohammad Mohammad, Ph.D., Research Leader
Author
Dagenais, Christian
Contributor
Forestry Innovation Investment
Date
March 2014
Edition
39807
Material Type
Research report
Physical Description
16 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Structural composites
Lumber
Fire
Location
Québec, Québec
Language
English
Abstract
The present work aims at evaluating the combustibility characteristics (i.e. reaction to fire) of structural composite lumber (SCL) when tested in compliance with the cone calorimeter standard ISO 5660 [7, 8, 9]. More precisely, this study evaluates the heat release rate, total heat release, mass loss, effective heat of combustion, smoke obscuration as well as the presence of toxic gases when SCL products are tested in conformance with ISO 5660. Moreover, this study is solely focused on SCL elements that are thick enough to act as semi-infinite solids (thermally thick solids), as opposed to typical thin combustible finish products. Tests data are also compared to those obtained for visually-graded solid wood specimens of the SPF species group.
Combustibility
Composite Lumber
Laminated products - Fire resistance
Structural Composites - Properties
PDF
Ajoutez cet article à votre liste de sélections pour demander le PDF - Add this item to your selection list to request the PDF
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Bridges & wildfire event: identifying information gaps in bridge protection in the context of resistance to wildland fire events

https://library.fpinnovations.ca/en/permalink/fpipub19860
Author
Refai, Razim
Date
March 2020
Material Type
Research report
Field
Sustainable Construction
TO WILDLAND FIRE EVENTS March 2020 info@fpinnovations.ca www.fpinnovations.ca This report
Author
Refai, Razim
Contributor
Ministry of Forests, Lands, Natural Resource Operations and Rural Development (FLNRORD)
Date
March 2020
Material Type
Research report
Physical Description
15 p.
Sector
Forest Operations
Field
Sustainable Construction
Research Area
Building Systems
Subject
Bridge
Fire
Protection
Structures
FPI TR
Wildfires
Series Number
Technical Report ; TR 2020 n.14
Language
English
Abstract
The Ministry of Forests, Lands, Natural Resource Operations and Rural Development (FLNRORD) has asked FPInnovations to investigate current information and knowledge for bridge fire impact mitigation opportunities and strategies. The extent of the investigation includes reaching out to domestic and international contacts to find directly applicable information and literature on strategies to mitigate fire impacts to bridge structures. This will include review of academic journals and reports, products and methods, to find
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Bridges & wildfire event: identifying information gaps in bridge protection in the context of resistance to wildland fire events

https://library.fpinnovations.ca/en/permalink/fpipub8006
Author
Refai, Razim
Date
March 2020
Material Type
Research report
Field
Sustainable Construction
TO WILDLAND FIRE EVENTS March 2020 info@fpinnovations.ca www.fpinnovations.ca This report
Author
Refai, Razim
Contributor
Ministry of Forests, Lands, Natural Resource Operations and Rural Development (FLNRORD)
Date
March 2020
Material Type
Research report
Physical Description
15 p.
Sector
Forest Operations
Field
Sustainable Construction
Research Area
Building Systems
Subject
Bridge
Fire
Protection
Structures
FPI TR
Wildfires
Series Number
Technical Report ; TR 2020 n.14
Language
English
Abstract
The Ministry of Forests, Lands, Natural Resource Operations and Rural Development (FLNRORD) has asked FPInnovations to investigate current information and knowledge for bridge fire impact mitigation opportunities and strategies. The extent of the investigation includes reaching out to domestic and international contacts to find directly applicable information and literature on strategies to mitigate fire impacts to bridge structures. This will include review of academic journals and reports, products and methods, to find
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CLT fire resistance tests in support of tall wood building demonstration projects

https://library.fpinnovations.ca/en/permalink/fpipub3425
Author
Osborne, Lindsay
Date
November 2014
Edition
40099
Material Type
Research report
Field
Sustainable Construction
FPInnovations ─ Report Title 1 CLT Fire Resistance Tests in Support of Tall Wood Building
Author
Osborne, Lindsay
Contributor
Natural Resources Canada. Canadian Forest Service
Date
November 2014
Edition
40099
Material Type
Research report
Physical Description
13 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Fire
Resistance
Laminate product
Structural composites
Series Number
Transformative Technologies - Fire Performance
E-4949
Location
Québec, Québec
Language
English
Abstract
These tests were performed to support the approval and construction of a tall wood building in Quebec City (13-storey). While a calculation methodology is provided in Chapter 8 (Fire) of the CLT Handbook [3], the Association des Chefs en Sécurité Incendie du Québec (ACSIQ), the Régie du bâtiment du Québec (RBQ) and other stakeholders requested these tests be performed so that they could witness the actual fire performance of the specified assemblies. As such, the main objective was to demonstrate at least a 2 h FRR of the CLT assemblies, which is the minimum required rating as prescribed by the National Building Code of Canada [4] for structural elements and fire separation walls of exit stair ways and elevators shafts in tall buildings (greater than 6 storeys). Numerous representatives from Quebec and Ontario were present for either one or both days of testing, including RBQ, the Cities of Montreal, Ottawa, and Quebec City as well as fire services personnel from Montreal, Ottawa and Gatineau. FPInnovations, Nordic, the Canadian Wood Council (CWC), and CHM fire consultants were also in attendance.
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Comportement au feu des éléments de charpente en bois lamellé-croisé

https://library.fpinnovations.ca/en/permalink/fpipub44078
Author
Dagenais, Christian
Date
July /2014
Material Type
Research report
Field
Sustainable Construction
nstit ut d e l a te c h ni q u e d u b âti m e nt d e l E T H Z uri c h, Ste ve Cr a , d e C H M Fire
Author
Dagenais, Christian
Date
July /2014
Material Type
Research report
Physical Description
60 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Timber
Laminate product
Building construction
Design
Fire
Language
English
Abstract
Le bois lamellé-croisé (CLT), un système de construction relativement récent pour lequel l’intérêt ne cesse de croître dans le secteur de la construction d’Amérique du Nord, contribue à la définition d’une nouvelle classe de produits massifs en bois. Le CLT est un composant structural à base de bois très prometteur, qui présente un potentiel élevé pour fournir des solutions de construction rentables pour les bâtiments résidentiels, commerciaux et institutionnels ainsi que pour les grandes installations industrielles. L’acceptation de la construction en CLT dans l’environnement réglementaire canadien requiert la conformité aux dispositions relatives à la protection incendie du Code national du bâtiment du Canada (CNBC), entre autres choses. Des essais au feu approfondis ont démontré la capacité du CLT à fournir un degré de résistance au feu pouvant atteindre près de 3 heures lorsque le matériau est mis à l’essai dans des conditions de plein chargement conformément à la norme CAN/ULC S101. De plus amples renseignements sont également fournis sur les propriétés de sécurité incendie connexes, y compris l’indice de propagation des flammes et les dispositifs coupe-feu. Les éléments de CLT sont utilisés dans les systèmes de construction d’une façon similaire aux dalles de béton et aux éléments muraux massifs ainsi qu’aux éléments utilisés dans la construction en gros bois d’œuvre en limitant les vides de construction créés grâce à l’utilisation des éléments massifs en bois, ce qui contribue à réduire le risque d’incendies dans ces vides de construction. En outre, la construction en CLT utilise généralement des panneaux de CLT pour les planchers et les murs porteurs, ce qui permet d’obtenir une compartimentation ayant une résistance inhérente au feu et contribue une fois de plus à réduire le risque de la propagation d’un incendie au-delà de son point d’origine (compartiment d’origine). Le présent document propose une méthodologie visant à déterminer la résistance au feu des éléments de CLT. En tant que modèle déterministe fondé sur les concept de calculs aux états limites, cette méthode permet de calculer la résistance des éléments de CLT soumis à une exposition au feu standard (soit la norme CAN/ULC S101) à l’aide des mécanismes techniques de base du bois pour les calculs de résistance au feu allant jusqu’à 3 heures, qui ne sont limités que par la disponibilité actuelle des données. La méthode utilise un ajustement linéaire échelonné de la vitesse de carbonisation, une épaisseur de la couche carbonisée de 7 mm dont la résistance et la rigidité sont supposées nulles, un coefficient de résistance égal à l’unité, un coefficient de durée d’application de la charge de courte durée, et des résistances spécifiées ajustées à leurs valeurs moyennes pour prédire les temps moyens de résistance au feu des éléments de murs et planchers de CLT qui suivent étroitement les temps réels de résistance au feu des éléments testés. Bien que certaines améliorations à cette méthode soient encore possibles, ces comparaisons suggèrent que la méthodologie prédit de façon prudente la résistance au feu des éléments de CLT.
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Development of CLT products with improved fire performance

https://library.fpinnovations.ca/en/permalink/fpipub7708
Author
He, Guangbo
Feng, Martin
Roussière, Fabrice
Date
March 2020
Edition
52984
Material Type
Research report
Field
Sustainable Construction
Author
He, Guangbo
Feng, Martin
Roussière, Fabrice
Date
March 2020
Edition
52984
Material Type
Research report
Physical Description
17 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Fire
Structural composites
Laminate product
Timber
Hardwoods
Testing
Language
English
Abstract
The fire resistance of cross-laminated timber (CLT) could be improved by treating the lamina with fire retardants. The major issues with this technology are the reduced bondability of the treated lamina with commercial adhesives. This study assessed several surface preparation methods that could improve the bondability and bond durability of fire-retardant treated wood  with  two  commercial  adhesives.  Four  surface  preparation  methods,  including  moisture/heat/pressure, surface planing, surface chemical treatment, and surface plasma treatment were assessed for their impact on the bondability and bond durability of lodgepole pine lamina. The block shear test results indicated that all surface preparation methods were somewhat  effective  in  improving  bond  performance  of  fire-retardant  treated  wood  compared to the untreated control wood samples, depending on the types of fire retardants and wood adhesives applied in the treatment process and bonding process. The selection of surface preparation, fire retardant, and wood adhesive should be considered interactively to obtain the best bond properties and fire performance. It may be possible to effectively bond the treated lamina with PUR adhesive without any additional surface preparation for the fire retardant used in the treatment at FPInnovations.
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Effectiveness of retardant on mulch fuels: a case study at Pelican Mountain, 2018

https://library.fpinnovations.ca/en/permalink/fpipub19843
Author
Hsieh, Rex
Date
March 2020
Material Type
Research report
Field
Fibre Supply
Author
Hsieh, Rex
Contributor
Canadian Forest Services (CFS)
Natural Resources Canada (NRC)
Alberta Agriculture and Forestry (AAF)
Date
March 2020
Material Type
Research report
Physical Description
27 p.
Sector
Forest Operations
Field
Fibre Supply
Research Area
Wildfire Operations
Subject
Fire retardant
Fuel treatment
Mulching
Mulch
FPI TR
Retardant
Series Number
Technical Report ; TR 2020 n.7
Language
English
Abstract
Mulching is a common method of fuel treatment. However, it is not currently listed by the U.S. Forest Service as a fuel type in its recommendations for fire retardant coverage levels. FPInnovations researchers set up plots with different coverage levels of retardant on a mulch fuel bed and collected fire behaviour data when a fire interacted with these plots. The results are intended to help wildfire agencies understand the effectiveness of retardant on mulch fuels in developing better suppression plans.
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Encapsulation of mass timber floor surfaces, report to Forestry Innovation Investment Ltd.

https://library.fpinnovations.ca/en/permalink/fpipub53043
Author
Ranger, Lindsay
Dagenais, Christian
Bénichou, Noureddine
Date
March 2020
Material Type
Research report
Field
Sustainable Construction
for their valuable input. Thank you to the National Research Council Fire Laboratory for their hard work
Author
Ranger, Lindsay
Dagenais, Christian
Bénichou, Noureddine
Contributor
Natural Resources Canada. Canadian Forest Service
Date
March 2020
Material Type
Research report
Physical Description
55 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Wood
Fire
Design
Building code
Floors
Fire tests
Residential construction
Language
English
Abstract
Currently, mass timber building designs commonly incorporate a concrete floor topping. This can improve building accoustics by increasing the mass of the assembly, reduce floor vibration and create a smooth flat surface to install finish flooring on. The installation of concrete requires formwork, pouring and finishing the concrete and time to cure which adds to project schedules. One way to address this is to use mass timber elements that are prefabricated with concrete toppings preinstalled. Replaceing the concrete floor toppings wiht dry alternatives, such as cement board, may also reduce construction timelines, while still ensuring adequate acoustic and vibration performance. Cement board needs only to be screwed in place and can be walked on immediately after installation; this reduction in construction time may reduce overall project costs and help make wood buildings more cost competitive than other types of construction.
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28 records – page 1 of 3.