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2021 Edition of Technical Guide for the Design and Construction of Tall Wood Buildings in Canada

https://research.thinkwood.com/en/permalink/catalogue2585
Topic
Design and Systems
Application
Wood Building Systems
Organization
FPInnovations
Country of Publication
Canada
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Structural
Seismic
Fire Performance
Vibration
Acoustics
Building Envelope
Sustainability
Prefabrication
Monitoring
Research Status
In Progress
Notes
Project contact is Erol Karacabeyli at FPInnovations
Summary
To support NRCan's Tall Wood Building Demonstration Initiative, FPInnovations developed and published the 2014 Edition of Technical Guide for the Design and Construction of Tall Wood Buildings in Canada. More than 80 technical professionals comprised of design consultants and experts from FPInnovations, the National Research Council, the Canadian Wood Council and universities were involved in its development. The Guide has gained national and worldwide reputation as one of the most complete and credible documents helping to introduce to the design and construction community, and Authorities Having Jurisdiction the terms "Mass Timber Construction" and "Hybrid Tall Wood Buildings". Since the publication of the First Edition, a number of tall wood buildings have been designed and constructed. Substantial regulatory changes are expected to happen based on the experience obtained from the demonstration initiative and the extensive research that has taken place domestically and internationally since the publication of the First Edition. These developments highlight a need for the Guide to be updated so that it aligns with efforts currently underway nationally and provincially and continues to lead in providing the design and construction community technical insight into new opportunities for building in wood. The First Edition of the Guide helped to focus the efforts of the early adopters who participated in NRCan's Tall Wood Building Demonstration Initiative. Updating and aligning the Guide with the release of the new National Building Code of Canada and the Canadian wood design standard (CSA O86), and sharing the experiences gained from tall wood buildings built since the First Edition, will not only continue to expand the base of early adopters, but also help to move aspects of mass timber and hybrid wood buildings into the mainstream.
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Acoustical Performance of Mass Timber Building Elements

https://research.thinkwood.com/en/permalink/catalogue2553
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
DLT (Dowel Laminated Timber)
NLT (Nail-Laminated Timber)
Application
Floors
Walls
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
DLT (Dowel Laminated Timber)
NLT (Nail-Laminated Timber)
Application
Floors
Walls
Topic
Acoustics and Vibration
Keywords
Sound Insulation
Acoustic Membrane
Acoustical Performance
Research Status
In Progress
Notes
Project contact is Jianhui Zhou at the University of Northern British Columbia
Summary
Building acoustics has been identified as one of the key subjects for the success of mass timber in the multi-storey building markets. The project will investigate the acoustical performance of mass timber panels produced in British Columbia. The apparent sound transmission class (ASTC) and impact insulation class (AIIC) of bare mass timber elements as wall and/ or floor elements will be measured through a lab mock-up. It is expected that a database of the sound insulation performance of British Columbia mass timber products will be developed with guidance on optimal acoustical treatments to achieve different levels of performance.
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Actuarial Contribution to the Understanding of Insurable Risks Related to Non-residential High-rise Buildings in CLT

https://research.thinkwood.com/en/permalink/catalogue2194
Topic
Market and Adoption
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Organization
Université Laval
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Market and Adoption
Keywords
High-Rise
Non-Residential
Course of Construction Insurance
Research Status
In Progress
Notes
Project contact is Étienne Marceau at Université Laval
Summary
The objective of this project is to identify the risk factors taken into account in the pricing of an insurance contract for a construction site. This project aims to synthesize the quantitative approaches used in practice and presented in academic research for the pricing of home insurance and commercial insurance. Then, we aim to identify the preventive measures that can be taken to reduce the impact of different perils in the insurance of a construction site in wood or other.
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Analytical Modeling of Lateral Strength and Stiffness of Inclined Self-Tapping Screw Connection

https://research.thinkwood.com/en/permalink/catalogue2651
Topic
Mechanical Properties
Connections
Author
Zhao, Ruihan
Organization
University of Alberta
Country of Publication
Canada
Topic
Mechanical Properties
Connections
Keywords
Self-Tapping Screws
Lateral Strength
Lateral Stiffness
Withdrawal
Yield
Embedment
Research Status
In Progress
Summary
The objective of this research is to develop models for predicting lateral strength and stiffness of connections containing inclined self-tapping screws, by considering the contribution of the withdrawal and yield properties of the screws and embedment properties of the connecting members.
Resource Link
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Assessing the Environmental Impacts of the Canadian Building Sector through Dynamic Life Cycle Analysis: Developing a Forward-looking Model for Greater Use of Wood Products

https://research.thinkwood.com/en/permalink/catalogue2325
Organization
Université Laval, Napier University (Scotland)
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Pierre Blanchet at Université Laval
Summary
Several studies indicate that using wood from sustainable forest management in building construction both maintains or increases carbon sinks in the forest, temporarily captures carbon in buildings, and substitute more emitting materials or fuels. This strategy is interesting, but it is difficult to implement from a political point of view because its real benefits are complex to evaluate. There are several methods for evaluating the GHG impacts of a product over its entire life cycle, but there is no consensus on the method to be used to assess the impacts of GHGs from biogenic carbon - the carbon contained in living or dead biomass, such as wood. Many commonly used methods rely on simplifying assumptions that do not accurately assess the benefits that could accrue from increased use of wood products under construction. This PhD project will improve a promising method to evaluate the GHG impacts of biogenic carbon. Particular attention will be paid to the uncertainties of the method so that it provides all the information necessary for informed decision-making. The expected results could confirm that greater use of wood products reduces the environmental impacts of buildings, and that current methodologies are too simplified to inform policy making.
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Biomimicry as a Generator of Optimal Volumetrics in Wood

https://research.thinkwood.com/en/permalink/catalogue2195
Topic
Design and Systems
Organization
Université Laval
Country of Publication
Canada
Topic
Design and Systems
Keywords
Biomimicry
Environmental Adaptation
Digital Fabrication
Material efficiency
Research Status
In Progress
Notes
Project contact is André Potvin at Université Laval
Summary
The biomimetic approach in architecture explores the genius of organic natural forms resulting from a long process of environmental adaptation. These forms often have a high compactness and an optimal material / volume ratio in line with the importance of reducing the material in the building to limit its environmental impact in terms of energy and resources. What are the natural forms and processes of growth of the form most appropriate to the physical properties of wood? What design process promotes the integration of a biomimetic approach from the earliest stages of design? Based on a review of the main achievements claiming this approach, this project will develop a taxonomy of the different biomimetic typologies and identify the most promising in the context of a wood realization. A digital manufacturing process will be developed to reflect the complexity of natural shapes and flows in an organic architecture that optimizes environmental performance and aesthetics.
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Business Risk Factors in Wood Construction from Design to Commissioning

https://research.thinkwood.com/en/permalink/catalogue2326
Organization
Université Laval
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Yan Cimon at Université Laval
Summary
CIRCERB (Chaire industrielle de recherche sur la construction écoresponsable en bois) has in the past mapped decision-making in public construction projects in Quebec. Using the same mapping approach, the project will highlight the steps in carrying out a timber construction project to identify hot spots where risk is important to the proponent, taking into account all stakeholders (material suppliers, general contractors, specialized contractors, etc.). In addition to presenting a broad picture of the wood construction, the project will identify the elements of the value creation chain on which optimization of business practices would be beneficial for wood construction.
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Characterization and Prediction of Construction Detail Quality and Their Implications for the Customer

https://research.thinkwood.com/en/permalink/catalogue2327
Organization
Université Laval
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Pierre Blanchet at Université Laval
Summary
Construction standards are governed by several factors. The National Building Code dictates the minimum to meet occupant safety issues. Energy issues are imposed by the energy efficiency standards of the Novoclimat programs of Transition Energie Québec. However, some developer-builders go further and enforce voluntary environmental standards such as LEED Version 4 or the WELL standard on occupant welfare. Many of these efforts are invisible to the occupier or the buyer because they are hidden in the building assembly, envelope or structure. Over the entire life cycle of buildings, these construction details will be important to the building operator, but their initial costs will also have an impact on the choices made during construction or acquisition. The project proposes to determine the added value of these quality approaches for the consumer. The project will consider key wood building systems by comparing minimum requirements, best practices and consumer perception.
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Characterization and Quantification of VOC and Other Chemical Compounds in the Building: Impact on Occupant Health, Air Quality and the Environment

https://research.thinkwood.com/en/permalink/catalogue2264
Topic
Mechanical Properties
Organization
Université Laval
Country of Publication
Canada
Topic
Mechanical Properties
Keywords
Construction
Research Status
In Progress
Notes
Contact: Véronic Landry, Université Laval
Summary
Classifications of volatile products that may pose health and comfort risks to occupants tend to be restricted by current regulations. It seems important to sample air from concrete, wood and steel buildings to measure the compounds present. Ideally, measurements at different time intervals could be considered to qualify and quantify contaminant dispersion dynamics over time. The project aims to identify a possible advantage of wood construction in the face of air quality, to identify the main contaminants (quantity and toxicity) and to propose sampling and measurement techniques adapted to the building environment.
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Characterizing High Temperature Performance of Structural Adhesives

https://research.thinkwood.com/en/permalink/catalogue2258
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Organization
Université Laval
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Topic
Fire
Keywords
Bonding
Research Status
In Progress
Notes
Contact: Christian Dagenais, Université Laval
Summary
Structural engineered woods require the use of previously evaluated structural adhesives in accordance with a variety of standard methods (ASTM D2559, ASTM D7247, CSA O112.9, CSA O112.10, CSA O177, etc.). The basic assumption is that a bonded engineered wood product will have a performance equivalent to, or better than, the non-bonded product it replaces, regardless of the conditions of use (dry, wet, fire, etc.). Nevertheless, the results of cross-laminated wood (CLT) fire tests have shown that the requirements currently imposed on adhesives do not allow to limit lamellae detachment when CLT is exposed to fire. Traditionally, this behavior is not observed for glulam. It is essential to review the classification and performance criteria imposed on adhesives by submitting them to the various tests currently standardized. The analysis of the results may also be used to develop a new test method for adhesives exposed to high temperatures, depending on the anticipated use of the engineered wood product.
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Composite CLT-Glulam Double-T Panels

https://research.thinkwood.com/en/permalink/catalogue2645
Topic
Mechanical Properties
Connections
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Roofs
Organization
Fast + Epp
University of Northern British Columbia
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Floors
Roofs
Topic
Mechanical Properties
Connections
Keywords
Vibration
Stiffness Properties
Strength
Screw
Vibration Test
Monotonic Loading Tests
GCWood
Research Status
In Progress
Summary
To support the associated Sir Matthew Begbie Elementary School and Bayview Elementary School projects in pushing the boundaries forward for long-span floor and roof construction, this testing project aims to compare different connection approaches for composite connections between glulam and cross-laminated timber (CLT) – for vibration, stiffness, and strength. Working with the University of Northern British Columbia (UNBC), Fast + Epp aimed to complete a series of vibration and monotonic load tests on 30’ long full-scale double-T ribbed panels. The tests consisted of screws in withdrawal, screws in shear, and nominal screws clamping with glue. Both the strength and stiffness are of interest, including slip stiffness of each connection type. This physical testing was completed in January and February 2020, where the full composite strength of each system was reached. Initial data analysis has provided information for comparison with existing models for shear connection stiffness. Publications will follow in 2021.
Resource Link
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Considering Embodied Energy in the Application of the National Building Code (NBC)

https://research.thinkwood.com/en/permalink/catalogue2328
Organization
Université de Sherbrooke
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Ben Amor at Université de Sherbrooke
Summary
Although lifecycle analysis approaches provide a reliable reading of the importance of the embodied energy of buildings, the tool is inaccessible for evaluation in a normative framework. The purpose of the project is to establish prescriptive directives linking the role of Transition Énergie Québec (TEQ) with the Régie du bâtiment du Québec (RBQ), which must ensure the quality of the work and the building safety. Similar to Part 9 of the NBC, it would be desirable to establish prescriptive rules based on know-how allowing a reasonable consideration of gray energy issues. In order to converge towards this approach, a number of tools will be considered. The various life cycle analysis methods (attributive, consequential, dynamic) (Astudillo et al., 2017) will be used, as well as more simplified approaches such as streamlined LCA (Arena et al., 2013, BellonMaurel et al. al., 2015) or simplified calculators, such as the carbon calculator that is currently being developed by Cecobois. The project will consider building carbon neutral objectives.
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Costing Analysis for Common Mass-timber Archetypes

https://research.thinkwood.com/en/permalink/catalogue2812
Topic
Cost
Design and Systems
Energy Performance
Material
CLT (Cross-Laminated Timber)
DLT (Dowel Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Hybrid Building Systems
Building Envelope
Organization
Morrison Hershield
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
DLT (Dowel Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Hybrid Building Systems
Building Envelope
Topic
Cost
Design and Systems
Energy Performance
Keywords
Parametric Design
Cost
Mass Timber
Building Code
BC Energy Step Code
National Energy Code of Canada for Buildings
Research Status
In Progress
Notes
Project contact is Eric Wood at Morrison Hershfield
Summary
The project develops building archetypes, cost data and energy modelling to allow users to cost out mass timber buildings from basic, code-compliant buildings to high-performing, energy-efficient, low-emitting buildings. It will help quantity surveyors, designers, and other decisionmakers undertake business-case development by clarifying cost variables associated with mass-timber construction.
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Cross Laminated Timber Reinforced with Carbon Fibre

https://research.thinkwood.com/en/permalink/catalogue2661
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Author
Cao, Xinlei
Organization
University of Alberta
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
Topic
Mechanical Properties
Keywords
Carbon Fiber
Flexural Stiffness
Stress Distribution
Analytical Model
Finite Element Method (FEM)
Research Status
In Progress
Summary
Although engineered wood products such as glued laminated timber (glulam) and cross-laminated timber (CLT) have successfully eliminated the flaws inherently exist in conventional wood products, they are still not comparable with steel and concrete in terms of strength and stiffness. Among all different options for reinforcement, Carbon Fibre is relatively popular due to its high tensile strength, low weight, and easy installation. This study presents an analysis of flexural stiffness and stress distributions of CLT panels reinforced with carbon fibre mats, based on an analytical method and finite element method (FEM).
Resource Link
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Deconstructable Hybrid Connections for the Next Generation of Mass Timber Prefabricated Buildings

https://research.thinkwood.com/en/permalink/catalogue2551
Topic
Connections
Application
Hybrid Building Systems
Country of Publication
Canada
Application
Hybrid Building Systems
Topic
Connections
Keywords
Deconstructable Connections
Prefabrication
Modular Construction
Reuse
Seismic Resistance
Research Status
In Progress
Notes
Project contact is Cristiano Loss at the University of British Columbia
Summary
This research aims at developing novel multi-material deconstructable hybrid connections for mass timber prefabricated buildings. Connections will be conceived in order to (i) meet multi-objective structural performance, (ii) favour modular construction, (iii) favour quick erection of buildings, (iv) quick disassemble and possible reuse of the timber members, and (v) provide seismic-resistant structural assemblies.
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Developing a Large Span Timber-based Composite Floor System for Highrise Office Buildings

https://research.thinkwood.com/en/permalink/catalogue2549
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Floors
Hybrid Building Systems
Country of Publication
Canada
Material
CLT (Cross-Laminated Timber)
Application
Floors
Hybrid Building Systems
Topic
Design and Systems
Keywords
Large Span
Prefabrication
High-Rise
Office Buildings
Tall Timber Buildings
Research Status
In Progress
Notes
Project contact is Frank Lam at the University of British Columbia
Summary
The objective of this project is to develop a large span timber-based composite floor system for the construction of highrise office buildings. This prefabricated floor system could span over 10 m under regular office occupation load, and its use will expedite the construction significantly, converting to multi-million financial savings in a typical 40+ story project, besides the impact on reducing carbon footprint and enhancing living experience.
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Development of a BIM Library for Wood Construction

https://research.thinkwood.com/en/permalink/catalogue2246
Topic
Design and Systems
Application
Wood Building Systems
Organization
Université Laval
Country of Publication
Canada
Application
Wood Building Systems
Topic
Design and Systems
Keywords
BIM library
Building Information Modeling
Research Status
In Progress
Notes
Project contact is Pierre Blanchet at Université Laval
Summary
The use of Building Information Modeling (BIM) models is not yet standardized. This situation limits the scope of the tool and this is particularly the case for systems not defined in the libraries of major BIM software. This results in a loss of productivity because each stakeholder will redefine materials and/or systems to a level of information corresponding to his own needs. This project aims, with the help of a research professional, to develop a BIM library that can contain the main information related to materials and systems to fully cover the needs of all users of the BIM model. This library will be made available to the public and will facilitate the use of wood systems by stakeholders.
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Development of a Clear Intumescent Coating for Mass Timber Construction: Fire Protection and Interior Application

https://research.thinkwood.com/en/permalink/catalogue2815
Topic
Fire
Application
Ceilings
Walls
Columns
Organization
National Research Council of Canada
Country of Publication
Canada
Application
Ceilings
Walls
Columns
Topic
Fire
Keywords
Intumescent Coating
Mass Timber
Encapsulated Mass Timber Construction
Encapsulation
Fire Resistance Rating
Research Status
In Progress
Notes
Project contact is Rokib Hassan at the National Research Council of Canada
Summary
Phase two of a four-phased research project, with the overarching goal of developing transparent intumescent coating (TIC) for mass timber construction, which would be technology certified, IP protected and licensed out. The use of TIC would ensure that fire resistance rating requirements are met while reducing the need for encapsulation, resulting in increased overall aesthetics provided by timber. Phase two focuses on demonstrating a proof-of-concept on a small scale and optimizing the TIC formula and coating thickness based on the testing results. Small scale tests will be conducted to measure fire resistance, weatherability and fire toxicity.
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Development of a New Generation of Structural Composites

https://research.thinkwood.com/en/permalink/catalogue2323
Organization
Université Laval
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Pierre Blanchet at Université Laval
Summary
It is reasonable to believe that a second generation of structural products will appear, bringing new properties and promoting the use of biobased materials in the construction of tall buildings. Among the possible development options, Corruven's Vcore and H-core products could offer second-generation material developments. The proposed project will be a product design project. A specification will be established and it will identify possible properties in the CLT structural multilayer product. Prototypes will be produced and tested to characterize them. An environmental characterization under development of the products will also be realized by applying the streamlined LCA method as proposed by Heidari et al. (2017). The optimized product will be fully characterized according to the application potential in the building (mechanical, fire, acoustic).
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Development of an Interface for 3D Structure Models to LCA Software

https://research.thinkwood.com/en/permalink/catalogue2330
Organization
Jean Proulx, Université de Sherbrooke
Country of Publication
Canada
Research Status
In Progress
Notes
Project contact is Jean Proulx at Université de Sherbrooke
Summary
The proposed project will include the development of an interface between structural calculation software by Finite Element Analysis (SAP2000, etc.) and BIM tools (e.g. Revit) to software allowing to perform a complete lifecycle analysis such as OpenLCA and Brightway2. This interface will add, among other things, missing information to 3D models (envelope, type of HVAC system, etc.) and allow designers to carry out a summary or detailed analysis of the environmental impacts of the different stages of the life cycle, ranging from construction, the operation and the eventual upgrading of the building. This interface will also make it possible to accelerate the process of analysis of preliminary solutions (example: structural system wood vs. steel or concrete). The research project will also include validation on different types of multi-storey structures (steel, concrete, wood).
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87 records – page 1 of 5.