Advanced wood-based solutions for mid-rise and high-rise construction: analytical models for balloon-type CLT shear walls

https://library.fpinnovations.ca/en/permalink/fpipub52680
Author
Chen, Zhiyong
Cuerrier-Auclair, Samuel
Popovski, Marjan
Date
July 2018
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Cuerrier-Auclair, Samuel
Popovski, Marjan
Contributor
Natural Resources Canada. Canadian Forest Service
Date
July 2018
Material Type
Research report
Physical Description
83 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Building Systems
Subject
Cross Laminated Timber
Performance
Building construction
Building materials
Energy
Language
English
Abstract
Lack of research and design information for the seismic performance of balloon-type CLT shear walls prevents CLT from being used as an acceptable solution to resist seismic loads in balloon-type mass-timber buildings. To quantify the performance of balloon-type CLT structures subjected to lateral loads and create the research background for future code implementation of balloon-type CLT systems in CSA O86 and NBCC, FPInnovations initiated a project to determine the behaviour of balloon-type CLT construction. A series of tests on balloon-type CLT walls and connections used in these walls were conducted. Analytical models were developed based on engineering principles and basic mechanics to predict the deflection and resistance of the balloon-type CLT shear walls. This report covers the work related to development of the analytical models and the tests on balloon-type CLT walls that the models were verified against.
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Advanced Wood-based Solutions for Mid-rise and High-rise Construction: Structural Performance of Post-Tensioned CLT Shear Walls with Energy Dissipators

https://library.fpinnovations.ca/en/permalink/fpipub49859
Author
Chen, Zhiyong
Popovski, Marjan
Symons, Paul D.
Date
May 2018
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Popovski, Marjan
Symons, Paul D.
Contributor
Natural Resources Canada. Canadian Forest Service
Date
May 2018
Material Type
Research report
Physical Description
117 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Cross Laminated Timber
Performance
Building construction
Building materials
Energy
Language
English
Abstract
The latest developments in seismic design philosophy have been geared towards developing of so called "resilient" or "low damage" innovative structural systems that can reduce damage to the structure while offering the same or higher levels of safety to occupants. One such innovative structural system is the Pres-Lam system that is a wood-hybrid system that utilizes post-tensioned (PT) mass timber components in both rigid-frame and wall-based buildings along with various types of energy disspators. To help implement the Pres-Lam system in Canada and the US, information about the system performance made with North American engineered wood products is needed. That information can later be used to develop design guidelines for the designers for wider acceptance of the system by the design community. Several components influence the performance of the Pres-Lam systems: the load-deformation properties of the engineered wood products under compression, load-deformation and energy dissipation properties of the dissipators used, placement of the dissiaptors in the system, and the level of post-tensioning force. The influence of all these components on the performance of Pres-Lam wall systems under gravity and lateral loads was investigated in this research project. The research project consisted on two main parts: material tests and system tests. In the material tests part of the program, a total of 110 compression tests were conducted to determine the load-deformation properties of four different engineered wood products (LVL, LSL, Glulam and CLT) in various directions. The LVL, LSL and Glulam specimens tested under compression parallel to grain had similar linear elastic behaviour with limited ductility. The CLT specimens tested under compression in the major-axis direction had linear elastic behaviour with moderate plasticity. Depending on the type of engineered wood product, typical failure modes included crushing, shear, wedge split and splitting. The compressive strength of the products tested ranged from 42.1 to 53.5 MPa, the global MOE (of the entire specimen under compression) varied between 6390 and 9554 MPa, the local (near the crushing surface) MOE parallel to grain was in the range of 2211 to 5090 MPa, while the local to global MOE ratio ranged from 29.2 to 58.0%, and was higher with the increase in the oven-dry density. The specimens of the four different engineered wood products tested under compression perpendicular to grain or in the minor-axis direction had elastic-plastic behaviour with a clearly defined plastic plateau. Crushing (densification) of the fibres perpendicular to grain was the main failure mode for all specimens, and was in some cases followed by in-plane shear failure or cracking perpendicular to grain. Compression parallel to grain in the middle layer that was followed by its delamination and buckling was a unique failure mode for CLT specimens tested under compression in the minor strength direction. The compressive strength of the engineered wood products tested were in the range of 4.8 to 27.8 MPa, while the global and local MOE perpendicular to grain were in the range of 244 to 2555 MPa, and 320 to 1726 MPa, respectively. The compressive strength and global MOE perpendicular to grain increased with an increase in the oven-dry density. The results show no well-defined trend for the local MOE perpendicular to grain. The specimens loaded in the centre perpendicular to grain had higher strength, global and local MOE than those loaded at the end. A convenient and timesaving design for the axial energy dissipators (fuses) was developed by replacing the epoxy in the original design with two half-tubes. Compared to the original design of fuses with epoxy, the new design with two half-tubes had similar necking failure mode and a longer failure displacment, thus providing user-friendly fuses that performed similar or even better than the original design. In the system tests part of the program, a total of 17 different PT and Pres-Lam CLT walls with six different configurations were tested under monotonic and reversed cyclic loading. The studied parameters included the level of PT force, the position of the fuses, and the number of UFPs. CLT shear walls subjected only to post-tensioning, had non-linear elastic behaviour. The behaviour of the PT walls with and without energy dissipators was relatively similar under monotonic and cyclic loading. The strength degradation observed during the cyclic tests was low in all wall configurations suggesting that very little damage was inflicted upon the structure during the first cycles at any deformation level. Four major failure modes, including yielding and buckling of fuse, crushing and splitting of wood at the end of wall, and buckling of lumber in the exterior-layer of CLT wall, were observed in the tests. The yielding in fuses occurred at the early stage of loading as designed and the other failure modes happened when the lateral drift reached or beyond 2.5%. The initial stiffness of the single-panel PT CLT walls tested ranged from 1.80 to 2.31 kN/mm, the load at the decompression point and 2.5% drift were in the range of 4.2 to 14.9 kN and 32.7 to 45.9 kN, respectively. The initial stiffness of the single-panel Pres-Lam CLT walls tested ranged from 1.69 to 2.44 kN/mm, the load at the decompression point and 2.5% drift were in the range of 21.0 to 30.2 kN and 59.6 to 69.8 kN, respectively. All the mechanical properties increased with an increase in the PT force. The average initial stiffness and the load at 2.5% drift of the coupled-panel Pres-Lam CLT walls tested were 4.59 kN/mm and 151.3 kN, respectively, while the load at the decompression point increased from 58.4 to 69.7 kN by increasing the number of UFP. The test results show that the behaviour of the Pre-Lam CLT shear walls can be de-coupled and a “superposition rule” can be applied to obtain the stiffness and resistance of such system. The test results gave a valuable insight into the structural behaviour of the PT and Pres-Lam CLT shear wall under in-plane lateral loads. The data from the testing will be used in the future for development of numerical computer models. They will also be used for development of design guidelines for this system. All tests conducted in this study and the analyses in the future modelling research will form the basis for developing future design guidelines for PT and Pres-Lam mass timber systems.
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Air tightness of one type of hardboard siding: first of 2 reports

https://library.fpinnovations.ca/en/permalink/fpipub5904
Author
Onysko, D.M.
Jones, S.K.
Date
March 1988
Edition
41506
Material Type
Research report
Field
Sustainable Construction
Author
Onysko, D.M.
Jones, S.K.
Date
March 1988
Edition
41506
Material Type
Research report
Physical Description
32 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Siding
Measurement
Materials
Building materials
Building construction
Air
Series Number
CFS project no.15
Project no.4310C016
E-785
Location
Ottawa, Ontario
Language
English
Abstract
Air Leakage - Measurement
Siding - Hardboard
Building construction - Moisture determination
Building materials - Hardboard siding
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Analyse de la compétitivité et du positionnement des produits isolants faits à partir de fibres de bois en Amérique du Nord

https://library.fpinnovations.ca/en/permalink/fpipub2708
Author
Lavoie, P.
Date
January 2010
Edition
39314
Material Type
Research report
Field
Sustainable Construction
Author
Lavoie, P.
Date
January 2010
Edition
39314
Material Type
Research report
Physical Description
50 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Market Analysis
Subject
United States (USA)
Building materials
Canada
Markets
Series Number
Programme des technologies transformatrices ; Projet no 201000339
201000339
Location
Québec, Québec
Language
French
Abstract
La tendance vers la construction verte est en croissance fulgurante depuis les dix dernières années. On estime que le marché de la construction verte représente environ 5 % du marché actuel de la construction. La majorité des bâtiments conçus ou construits dans une perspective environnementale se situent dans les secteurs non-résidentiel ou multifamilial. C’est dans ce contexte que nous nous sommes intéressés à la possibilité de développer et vendre des isolants faits à partir de bois; un matériau généralement reconnu pour ses vertus écologiques. La principale application ciblée dans le rapport est les cavités murales. Ce rapport se présente en cinq (5) principales sections :
Marché : Le marché mondial pour les produits isolants est énorme. Il est estimé à plus de 190 milliards de pi² base R-1. Près de 70 % de ce total est destiné au marché de la construction qui comprend la construction résidentielle (45 %) et non-résidentielle (23 %). La majorité des isolants consommés à l’échelle mondiale sont utilisés en Amérique du Nord et en Europe de l’Ouest. De manière générale, le marché est dominé par les mousses plastiques et la fibre de verre. Le marché pour les isolants autres (alternatifs) oscille entre 2 et 6 % en fonction des marchés dont il est question. Cette proportion est généralement plus élevée dans la réparation et la rénovation que dans la nouvelle construction. Il existe des variations régionales qui sont documentées dans le présent rapport.
Structure industrielle : Les isolants sont des produits dont la valeur unitaire est relativement faible. Il est par conséquent difficile de livrer ces produits sur de grandes distances. La majorité de la production mondiale se fait dans les deux grands marchés mondiaux soit l’Amérique du Nord et l’Europe de l’Ouest. Le tiers du marché (33 %) est dominé par cinq grandes entreprises qui opèrent plusieurs divisions. Elles sont : St-Gobain, Rockwool, Owens Corning, Johns Manville et Knauf. Il faut dire que les produits dominant actuellement le marché nécessitent d’importants investissements en capitaux. Ceci explique, en partie, cette concentration du marché au chapitre de la production.
Politiques et réglementations : Cette section documente les grandes tendances qui risquent d’affecter la demande pour les produits isolants. L’augmentation des coûts de production des mousses pourrait offrir des opportunités pour d’autres produits. Les exigences relatives aux émissions de gaz à effet de serre pourraient jouer en faveur des isolants faits à partir de bois. Les politiques de réutilisation des matières résiduelles présentent des opportunités quant à l’utilisation de ces résidus pour fabriquer des isolants. La hausse des exigences de performance énergétique exigera l’amélioration des produits communément utilisés ainsi que des innovations à partir des matériaux moins fréquemment employés.
Performance environnementale : Cette section montre que les produits isolants à base de bois peuvent contribuer à l’obtention de 8 à 9 % des points pour les systèmes de certification LEED et Green Globes. Il faut toutefois être conscient que l’isolant représente une petite proportion des matériaux entrants dans la construction d’un immeuble (<1 % en valeur). Ceci démontre l’intérêt, du point de vue de la construction verte, à développer des produits qui ont d’autres fonctions que simplement celle d’isoler.
Comportements et exigences d’achat : Des entrevues exploratoires auprès d’architectes et autres utilisateurs d’isolant ont démontré un intérêt pour des produits plus verts. Les principaux facteurs intervenant dans la sélection du matériau isolant sont sa résistance thermique, son coût et la familiarité avec le produit. Les produits isolants conventionnels ne reçoivent que très peu d’intérêt de la part des architectes. L’isolant n’est pas perçu comme étant très innovateur (c’est plus ou moins une commodité) et a peu d’incidence sur le concept (esthétique ou fonctions) du bâtiment. Une des tendances qui semble poindre actuellement à l’horizon est celle des isolants qu’il est possible d’agrafer par l’extérieur du bâtiment. Les autres sections du document présentent le contexte dans lequel le projet s’est exécuté (contexte, objectifs, équipe de projet, etc.) et font état des conclusions à retenir (discussion et conclusions). Les propriétés et caractéristiques générales des différents matériaux isolants sont présentées en annexe. Cette section complémentaire recense des exemples de produits pour chacun des principaux types de matériaux utilisés sur le marché incluant la fibre et la laine de bois. Les informations colligées dans le cadre de ce projet permettent d’établir ces constats généraux :
À court et moyen terme, les principaux marchés pour l’isolant fait à partir de bois sont le marché non-résidentiel et multifamilial.
Le positionnement du produit isolant bois devrait être du côté des produits verts ou respectueux de l’environnement. Il ne s’agit pas d’un matériau dont la performance surpasse les matériaux communément utilisés.
Pour profiter pleinement de ce positionnement stratégique, le(s) produit(s) développé(s) devrai(en)t : o Incorporer d’autres fonctions (pare-air, pare-vapeur, pare-feu, revêtement structural extérieur, parement extérieur, structure, etc.). o Utiliser des matériaux issus de la démolition d’immeubles existants, fibres agricoles et autres intrants avec une faible empreinte écologique. o Être analysés objectivement par l’entremise d’une analyse de cycle de vie. La conclusion du rapport soulève certaines avenues de recherche pour les années à venir. Parmi celles-ci, on note les pistes suivantes :
Meilleure connaissance des types de construction les plus susceptibles d’utiliser des isolants verts faits à partir de bois.
Critères (incluant le prix et spécification de produit) recherchés par les différents utilisateurs.
Identification des marchés industriels (pas liés à la construction) susceptibles d’être réceptifs à des produits à base de bois.
Potentiel d’utilisation des matériaux de différentes sources (récupération, agricole, etc.) dans la fabrication de produits isolants.
Développement des propriétés (ex. : résistance à la compression) et des procédés.
Insulation
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Le bois canadien : naturellement renouvelable, incontestablement écologique

https://library.fpinnovations.ca/en/permalink/fpipub39870
Contributor
Forest Products Association of Canada (FPCA)
Canadian Wood Council (CWC)
Date
2009
Material Type
Pamphlet
Field
Sustainable Construction
Contributor
Forest Products Association of Canada (FPCA)
Canadian Wood Council (CWC)
Date
2009
Material Type
Pamphlet
Physical Description
22 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Building materials
Wood
Renewable natural resources
Environment
Location
Québec, Québec
Language
French
Abstract
Sustainability
Building construction - Design - Canada
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Business-to-business carbon sequestration tool

https://library.fpinnovations.ca/en/permalink/fpipub8139
Author
FPInnovations
Date
2013
Material Type
Research report
Field
Environment
Author
FPInnovations
Date
2013
Material Type
Research report
Physical Description
1 v.
Sector
Forest Operations
Pulp Paper and Bioproducts
Wood Products
Field
Environment
Research Area
Environment
Subject
Biomaterials
Bioproducts
Building construction
Building materials
Cellulose
Construction materials
Design
Fuels
Gypsum
Nanocrystalline cellulose NCC
Panels
Paper products
Quality control
Standards
Wood construction
Language
English
Abstract
This calculator is intended as a companion to the Product Category Rules for North American Structural and Architectural Wood Prodcuts. It serves to simplify and standardize the approach to biogenic carbon accounting when developing EPDs according to that PCR. This tool comes in two versions: one for use with cradle-to-grave LCA data (the B2C tool) and one for use with cradle-to-gate LCA data (the B2B tool)
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8139.xlsx

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Business-to-consumer carbon sequestration tool

https://library.fpinnovations.ca/en/permalink/fpipub8140
Author
FPInnovations
Date
2013
Material Type
Research report
Field
Environment
Author
FPInnovations
Date
2013
Material Type
Research report
Physical Description
1 v.
Sector
Forest Operations
Pulp Paper and Bioproducts
Wood Products
Field
Environment
Research Area
Environment
Subject
Biomaterials
Bioproducts
Building construction
Building materials
Cellulose
Construction materials
Design
Fuels
Gypsum
Nanocrystalline cellulose NCC
Panels
Paper products
Quality control
Standards
Wood construction
Language
English
Abstract
This calculator is intended as a companion to the Product Category Rules for North American Structural and Architectural Wood Prodcuts. It serves to simplify and standardize the approach to biogenic carbon accounting when developing EPDs according to that PCR. This tool comes in two versions: one for use with cradle-to-grave LCA data (the B2C tool) and one for use with cradle-to-gate LCA data (the B2B tool)
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8140.xlsx

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Development of long-term durability data for various protective treatments for building materials

https://library.fpinnovations.ca/en/permalink/fpipub41428
Author
Desai, Roman L.
Date
March 1982
Material Type
Research report
Field
Sustainable Construction
DEVELOPMENT OF LONG-TERM DURABILITY DATA FOR VARIOUS PROTECTIVE TREATMENTS FOR BUILDING MATERIALS
Author
Desai, Roman L.
Date
March 1982
Material Type
Research report
Physical Description
9 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Pinus
Preservation
Building materials
Series Number
CFS/DSS project no 13/81-82
E-6
Location
Ottawa, Ontario
Language
English
Abstract
Eastern White Pine - Preservation - Tests
Pinus strobus - Preservation - Tests
Building material - Preservation - Tests
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Development of performance criteria for residential floors under concentrated loads at the Mark XI project

https://library.fpinnovations.ca/en/permalink/fpipub38006
Author
Onysko, D.M.
Date
March 1982
Material Type
Research report
Field
Sustainable Construction
Author
Onysko, D.M.
Date
March 1982
Material Type
Research report
Physical Description
72 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Testing
Mechanical properties
Research
Materials tests
Materials
Joists
Building materials
Series Number
CFS/DSS project no 7/81-82
E-35
Location
Ottawa, Ontario
Language
English
Abstract
HUDAC Mark XI Research House
Floors - Testing
Joists - Strength
Building materials - Testing
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Expanding wood use towards 2025: development of mass timber midply wall systems, year 1

https://library.fpinnovations.ca/en/permalink/fpipub8111
Author
Chen, Zhiyong
Ni, Chun
Dagenais, Christian
Hu, Lin
Date
March 2021
Edition
March 2021
Material Type
Research report
Field
Sustainable Construction
Author
Chen, Zhiyong
Ni, Chun
Dagenais, Christian
Hu, Lin
Contributor
Engineered Wood Assocation (APA)
American Wood Council (AWC)
Date
March 2021
Edition
March 2021
Material Type
Research report
Physical Description
49 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Cross Laminated Timber (CLT)
Performance
Building construction
Building materials
Seismic
Shear walls
Standards
Series Number
Expanding wood use towards 2025
Technical Report TR 2021 N48
Language
English
Abstract
n the first year of this project, literature reviews were conducted to identify the code requirements on MT components and to survey the available LLRSs used in the MT structures. Conceptual MT midply wall systems meeting structural, fire, and acoustical performance requirements were proposed. An advisory group meeting was held to evaluate the practicability of the proposed MT midply systems. In the next fiscal year, the proposed MT Midply will be optimised further according to the comments and suggestions from the advisory group. Analytical evaluation of the proposed MT Midply wall systems along with necessary tests will be conducted. Based on the evaluation, a go / no-go decision will be made as to whether the study should be continued for the proposed MT Midply.
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