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7 records – page 1 of 1.

BIM-Based Code Compliance Checking for Fire Safety in Timber Buildings: A Comparison of Existing Tools

https://research.thinkwood.com/en/permalink/catalogue2110
Year of Publication
2019
Topic
Design and Systems
Fire
Application
Wood Building Systems

Collaboration Enables Innovative Timber Structure Adoption in Construction

https://research.thinkwood.com/en/permalink/catalogue2007
Year of Publication
2018
Topic
Market and Adoption
Application
Wood Building Systems

Fire Performance of Self-Tapping Screws in Tall Mass-Timber Buildings

https://research.thinkwood.com/en/permalink/catalogue2877
Year of Publication
2021
Topic
Fire
Connections
Material
Glulam (Glue-Laminated Timber)
Author
Létourneau-Gagnon, Mathieu
Dagenais, Christian
Blanchet, Pierre
Organization
Université Laval
FPInnovations
Editor
Hwang, Cheol-Hong
Publisher
MDPI
Year of Publication
2021
Format
Journal Article
Material
Glulam (Glue-Laminated Timber)
Topic
Fire
Connections
Keywords
Self-Tapping Screws
Heat Transfer
Fire Performance
Finite Element Modeling
Research Status
Complete
Series
Applied Sciences
Summary
Building elements are required to provide sufficient fire resistance based on requirements set forth in the National Building Code of Canada (NBCC). Annex B of the Canadian standard for wood engineering design (CSA O86-19) provides a design methodology to calculate the structural fire-resistance of large cross-section timber elements. However, it lacks at providing design provisions for connections. The objectives of this study are to understand the fire performance of modern mass timber fasteners such as self-tapping screws, namely to evaluate their thermo-mechanical behavior and to predict their structural fire-resistance for standard fire exposure up to two hours, as would be required for tall buildings in Canada. The results present the great fire performance of using self-tapping screws under a long time exposure on connections in mass timber construction. The smaller heated area of the exposed surface has limited thermal conduction along the fastener’s shanks and maintained their temperature profiles relatively low for two hours of exposure. Based on the heat-affected area, the study presents new design principles to determine the residual length of penetration that would provide adequate load-capacity of the fastener under fire conditions. It also allows determining safe fire-resistance values for unprotected fasteners in mass timber construction exposed up to two hours of standard fire exposure.
Online Access
Free
Resource Link
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Fire Safety in Tall Timber Building: A BIM-Based Automated Code-Checking Approach

https://research.thinkwood.com/en/permalink/catalogue2664
Year of Publication
2020
Topic
Fire
Design and Systems
Application
Wood Building Systems
Author
Kincelova, Kristina
Boton, Conrad
Blanchet, Pierre
Dagenais, Christian
Publisher
MDPI
Year of Publication
2020
Format
Journal Article
Application
Wood Building Systems
Topic
Fire
Design and Systems
Keywords
BIM
Fire Safety
Building Code
Visual Programming
Compliance Checking
Research Status
Complete
Series
Buildings
Summary
Fire safety regulations impose very strict requirements on building design, especially for buildings built with combustible materials. It is believed that it is possible to improve the management of these regulations with a better integration of fire protection aspects in the building information modeling (BIM) approach. A new BIM-based domain is emerging, the automated code checking, with its growing number of dedicated approaches. However, only very few of these works have been dedicated to managing the compliance to fire safety regulations in timber buildings. In this paper, the applicability to fire safety in the Canadian context is studied by constituting and executing a complete method from the regulations text through code-checking construction to result analysis. A design science approach is used to propose a code-checking method with a detailed analysis of the National Building Code of Canada (NBCC) in order to obtain the required information. The method starts by retrieving information from the regulation text, leading to a compliance check of an architectural building model. Then, the method is tested on a set of fire safety regulations and validated on a building model from a real project. The selected fire safety rules set a solid basis for further development of checking rules for the field of fire safety. This study shows that the main challenges for rule checking are the modeling standards and the elements’ required levels of detail. The implementation of the method was successful for geometrical as well as non-geometrical requirements, although further work is needed for more advanced geometrical studies, such as sprinkler or fire dampers positioning.
Online Access
Free
Resource Link
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Modeling the Impact of Assembly Tolerances Regarding Air Leaks on the Energy Efficiency and Durability of a Cross-Laminated Timber Structure

https://research.thinkwood.com/en/permalink/catalogue2365
Year of Publication
2019
Topic
Energy Performance
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Martin, Ulysse
Blanchet, Pierre
Potvin, André
Publisher
North Carolina State University
Year of Publication
2019
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Energy Performance
Design and Systems
Keywords
Energy Efficiency
Air Leakage
HAM Analysis
Durability Assessment
Research Status
Complete
Series
BioResources
Summary
Air leaks have a considerable impact on the energy load and durability of buildings, particularly in cold climates. In wood construction using cross-laminated timber (CLT), air leaks are most likely to be concentrated at the joints between panels and other elements. This study used simulations of heat, air, and moisture transfers through a gap between two CLT panels causing air leakage in winter conditions under a cold climate. A real leakage occurrence was sized to validate the simulations. The aim of this work was to assess the impact on the energy loads and the durability of an air leak, as either infiltration or exfiltration, for different gap widths and relative humidity levels. The results showed that infiltrations had a greater impact on the energy load than exfiltrations but did not pose a threat to the durability, as opposed to exfiltrations. Gap sizes in CLT may vary, but the effect on the energy load was sensitive to the leakage path in the rest of the wall. As expected, a combination of winter exfiltration and a high level of interior relative humidity was particularly detrimental.
Online Access
Free
Resource Link
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A State of the Art of the Overall Energy Efficiency of Wood Buildings—An Overview and Future Possibilities

https://research.thinkwood.com/en/permalink/catalogue2943
Year of Publication
2021
Topic
Energy Performance
Application
Wood Building Systems
Author
Cabral, Matheus
Blanchet, Pierre
Organization
Université Laval
Editor
Koenders, Eddie
Publisher
MDPI
Year of Publication
2021
Format
Journal Article
Application
Wood Building Systems
Topic
Energy Performance
Keywords
Construction
Energy Efficiency
Embodied Energy
Mass Timber
Phase-Changing Materials
Post-and-Beam
Wood Composites
Wood-Frame
Research Status
Complete
Series
Materials
Summary
The main goal of this study was to review current studies on the state of the art of wood constructions with a particular focus on energy efficiency, which could serve as a valuable source of information for both industry and scholars. This review begins with an overview of the role of materials in wood buildings to improve energy performance, covering structural and insulation materials that have already been successfully used in the market for general applications over the years. Subsequently, studies of different wood building systems (i.e., wood-frame, post-and-beam, mass timber and hybrid constructions) and energy efficiency are discussed. This is followed by a brief introduction to strategies to increase the energy efficiency of constructions. Finally, remarks and future research opportunities for wood buildings are highlighted. Some general recommendations for developing more energy-efficient wood buildings are identified in the literature and discussed. There is a lack of emerging construction concepts for wood-frame and post-and-beam buildings and a lack of design codes and specifications for mass timber and hybrid buildings. From the perspective of the potential environmental benefits of these systems as a whole, and their effects on energy efficiency and embodied energy in constructions, there are barriers that need to be considered in the future.
Online Access
Free
Resource Link
Less detail

Use of Northern Hardwoods in Glued-laminated Timber: A Study of Bondline Shear Strength and Resistance to Moisture

https://research.thinkwood.com/en/permalink/catalogue2427
Year of Publication
2019
Topic
Moisture
Design and Systems
Material
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems

7 records – page 1 of 1.