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Advanced wood-based solutions for mid-rise and high-rise construction: modelling of timber connections under force and fire

https://library.fpinnovations.ca/fr/permalink/fpipub49851
Auteur
Chen, Zhiyong
Ni, Chun
Dagenais, Christian
Date
March 2018
Genre du document
Research report
Domaine
Sustainable Construction
Connections under Force and Fire Date: March 2018 By: Zhiyong Chen, Ph.D., P.Eng., Scientist, Advanced
Auteur
Chen, Zhiyong
Ni, Chun
Dagenais, Christian
Collaborateur
Natural Resources Canada. Canadian Forest Service
Date
March 2018
Genre du document
Research report
Description physique
85 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Cross Laminated Timber
Fire
Performance
Timber
Langue
English
Résumé
FPInnovations carried out a survey with consultants and researchers on the use of analytical models and software packages related to the analysis and design of mass timber buildings. The responses confirmed that a lack of suitable models and related information for material properties of timber connections, in particular under combination of various types of loads and fire, was creating an impediment to the design and construction of this type of buildings. Furthermore, there is currently a lack of computer models for use in performance-based design for wood buildings, in particular, seismic and fire performance-based design. In this study, a sophisticated constitutive model for wood-based composite material under stress and temperature was developed. This constitutive model was programmed into a user-subroutine and can be added to most general-purpose finite element software. The developed model was used to model the structural performance of a laminated veneer lumber (LVL) beam and a glulam bolted connection under force and/or fire. Compared with the test results, it shows that the developed model was capable of simulating the mechanical behaviour of LVL beam and glulam connection under load and/or fire with fairly good correlation. With this model, it will allow structural designers to obtain the load-displacement curve of timber connections under force, fire or combination of the two. With this, key design parameters such as capacity, stiffness, displacement and ductility, which are required for seismic or fire design, can be obtained. It is recommended that further verification and calibration of the model be conducted on various types of wood products, such as CLT, glulam, SCL and NLT, and fasteners, e.g. screw and rivet. Moreover, a database of the thermal and structural properties of the wood members and fasteners that are commonly used in timber constructions need to be developed to support and facilitate the application of the model.
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Effectiveness of retardant on mulch fuels: a case study at Pelican Mountain, 2018

https://library.fpinnovations.ca/fr/permalink/fpipub19843
Auteur
Hsieh, Rex
Date
March 2020
Genre du document
Research report
Domaine
Fibre Supply
Auteur
Hsieh, Rex
Collaborateur
Canadian Forest Services (CFS)
Natural Resources Canada (NRC)
Alberta Agriculture and Forestry (AAF)
Date
March 2020
Genre du document
Research report
Description physique
27 p.
Secteur
Forest Operations
Domaine
Fibre Supply
Champ de recherche
Wildfire Operations
Sujet
Fire retardant
Fuel treatment
Mulching
Mulch
FPI TR
Retardant
Série
Technical Report ; TR 2020 n.7
Langue
English
Résumé
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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Performance-based approach to support tall and large wood buildings: fire and seismic performance

https://library.fpinnovations.ca/fr/permalink/fpipub49569
Auteur
Dagenais, Christian
Chen, Zhiyong
Popovski, Marjan
Date
October 2017
Genre du document
Research report
Domaine
Sustainable Construction
FPInnovations Performance-Based Approach to Support Tall and Large Wood Buildings: Fire
Auteur
Dagenais, Christian
Chen, Zhiyong
Popovski, Marjan
Collaborateur
Natural Resources Canada. Canadian Forest Service
Date
October 2017
Genre du document
Research report
Description physique
48 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Building Systems
Sujet
Cross Laminated Timber
Fire
Performance
Adhesives
Langue
English
Résumé
The objective of the current project is to develop a performance-based design process for wood-based design systems that would meet the objectives and functional statements set forth in the National Building Code of Canada. More specifically, this report discusses the fire and seismic performance of buildings, as identified as a priority in a previous FPInnovations report.
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Performance evaluation of commercially available wildland fire chemicals using a custom-built thermal canister

https://library.fpinnovations.ca/fr/permalink/fpipub36373
Auteur
Refai, Razim
Coronel, Eder Alain Villa
McDonald, Andre
Date
March 2020
Genre du document
Research report
Domaine
Fibre Supply
Auteur
Refai, Razim
Coronel, Eder Alain Villa
McDonald, Andre
Collaborateur
Canadian Forest Services (CFS)
Ontario Ministry of Natural Resources & Forestry (OMNR)
Date
March 2020
Genre du document
Research report
Description physique
24 p.
Secteur
Forest Operations
Domaine
Fibre Supply
Champ de recherche
Wildfire Operations
Sujet
Fire retardant
Wildfires
Chemicals
Gel
Retardant
FPI TR
Water
Série
Technical Report ; TR 2020 n.11
Localisation
Ontario
Langue
English
Résumé
This study focuses on evaluating the relative performance of different commercially available wildland fire chemicals using a custom-built sensible enthalpy rise calorimeter, known as the ‘Thermal Canister.’ Six different fire chemicals were evaluated in this study: Blazetamer 380, AquaGel-K, Firewall II, WD 881C, Thermo-Gel 200 L, and FireIce 561. The evaluation of the relative performance of the fire chemicals was conducted by using the average heat release rate as the primary metric. It was found that under the test conditions, Thermo-Gel 200L at 3% concentration and FireIce 561 at 1.4% concentration were the most effective at suppressing combustion. The fire chemicals that were least effective at suppressing combustion were Firewall II at 0.25% and 2% concentration and WD 881C at 0.1%, 0.3%, and 1% concentrations. The study also found that certain fire chemicals such as AquaGel-K and FireIce 561 at their highest approved mix ratios were too viscous to be applied and may prove to be challenging to use for firefighting operations. Data from this study will be used in the Wildfire Chemical Roadmap, where results from multiple tests will help assess the effectiveness and cost of using gels.
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WoodST: an advanced modelling tool for fire safety analysis of timber structures

https://library.fpinnovations.ca/fr/permalink/fpipub7943
Auteur
Chen, Zhiyong
Dagenais, Christian
Ni, Chun
Date
January 2021
Genre du document
Research report
Domaine
Sustainable Construction
INFONOTE January 2021 – no. 01 Not-Restricted WOODST: AN ADVANCED MODELLING TOOL FOR FIRE
Auteur
Chen, Zhiyong
Dagenais, Christian
Ni, Chun
Date
January 2021
Genre du document
Research report
Description physique
5 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Fire
Models
Performance
Timber
Langue
English
Résumé
WoodST is capable of calculating heat transfer, charring rate, load-displacement curve as well as the time and mode of failure of timber structures exposed to fire, thus providing a cost-competitive solution for the fire safety analysis of timber structures. This InfoNote briefly introduces the development and verification of WoodST. Two applications of WoodST are also demonstrated.
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WoodST: outil de modélisation avancé pour l'analyse de la sécurité incendie des structures en bois

https://library.fpinnovations.ca/fr/permalink/fpipub7944
Auteur
Chen, Zhiyong
Dagenais, Christian
Ni, Chun
Date
Janvier 2021
Genre du document
Research report
Domaine
Sustainable Construction
of Timber Connections under Force and Fire (Project No. 301012203). FPInnovations, Vancouver, Canada
Auteur
Chen, Zhiyong
Dagenais, Christian
Ni, Chun
Date
Janvier 2021
Genre du document
Research report
Description physique
5 p.
Secteur
Wood Products
Domaine
Sustainable Construction
Champ de recherche
Advanced Wood Materials
Sujet
Fire
Models
Performance
Timber
Langue
French
Résumé
WoodST est capable de calculer le transfert de chaleur, la vitesse de carbonisation, la courbe charge-déplacement ainsi que le moment et le mode de défaillance des structures en bois exposées au feu, offrant ainsi une solution à coût compétitif pour l'analyse de la sécurité incendie des ossatures en bois. La présente note d’information présente brièvement le développement et la vérification de WoodST. Deux applications de WoodST sont également présentées.
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6 notices – page 1 of 1.