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Monotonic Quasi-Static Testing of CLT Connections

This testing program was carried out by the Advanced Building Systems (ABS) Department of FPInnovations in response to a request from Mrs. Julie Frappier from Nordic Engineered Wood for the evaluation of the mechanical properties of three (3) different assemblies for attaching Cross Laminated Timber (CLT) panels. Each of the assemblies consisted of six (6) specimens for a total of eighteen (18) tests. All specimens were manufactured by Nordic Engineered Wood and delivered to FPInnovations’ laboratory in Québec City.

The key objective was to evaluate the mechanical properties pertinent for the design of CLT panel connections exposed to in-plane loading such as diaphragms or shear walls. The evaluation of the ultimate loading capacity (𝐏𝐮𝐥𝐭) and the stiffness (K) of the connections are thus the main focus of this study.

Shear Modulus of CLT in plan loading

A testing program was carried out by the Advanced Building Systems (ABS) Department of FPInnovations in response to a request made by Mrs. Julie Frappier of Nordic Engineered Wood Products for the evaluation of the effective shear modulus of eight (8) different Cross-laminated Timber (CLT) configurations or series. The test matrix consisted of a total seventy (70) specimens and each specimen was submitted to four (4) bending tests, resulting in a total two hundred and eighty (280) tests. All specimens were manufactured by Nordic Engineered Wood Products and delivered to FPInnovations’ testing facilities in Québec City.

IBS4 – Sustainability and Life Cycle Analysis for Residential Buildings

Environmental awareness in building design, construction and operation is stronger than ever. But how can we meet the world’s rapidly growing need for buildings and still be environmentally responsible? Although construction is never fully benign for the environment, designers and builders can make choices to minimize the impact. Wood plays an important part in sustainable design, as shown by scientific analysis.

The Historical Development of the Building Size Limits in the National Building Code of Canada

The use of wood is limited in larger and taller buildings by the National Building Code of Canada (NBCC) based on concern of increased fire risk. The current requirements were developed long ago, under much different conditions than today. Since then the industry’s knowledge of fire science has evolved considerably, fire service equipment and capabilities have improved, detection and suppression systems have advanced, construction materials and techniques have changed significantly, and public awareness and education regarding fire safety has increased.

Having an understanding of the knowledge, capability, materials and methods used to develop the height and area limits and the risks they were intended to mitigate, sets the basis for re-examination of those limits in a current context. This can be achieved through a historical examination of the development of the limits and their bearing on the use of combustible construction in buildings.

Lumber properties
...known as in-grade testing. In the early 1980s, the Canadian lumber industry conducted a major research program through the Canadian Wood Council Lumber Properties Program for bending, tension and compression...
Wood Design & Building Magazine, vol 25, issue 104
...others demonstrate how transportation quietly supports modern construction by enabling prefabricated materials and building systems to reach communities where local construction capacity may be limited. Together, they illustrate how wood...
Durability by design
...to protect the wood or, if the wood will be exposed, designing to not accumulate moisture.  It includes ensuring the building envelope is appropriately designed to shed bulk water, mitigating...
Sizer Course
Course Overview The Sizer Course provides an in-depth introduction to the WoodWorks Sizer Program, a powerful tool for designing and analyzing structural elements such as beams, columns, and shearwalls. The...
Tall Wood Feasibility Study
Tall Wood Feasibility Study: Mass Timber and Concrete explores the economic, construction, and environmental performance of a proposed 12-storey residential development in Dartmouth, Nova Scotia. Developed through a side-by-side comparison...
Encapsulated mass timber construction
...for EMTC is determined through the ULC S146 test method. In order for structural wood elements to be considered ‘mass timber’, they must meet minimum size requirements, which are different...
An Industry Average EPD for Canadian Pre-fabricated Wood I-Joists
This is a Canadian industry wide (average) business-to-business Type III environmental product declaration (EPD) for pre-fabricated wood I-joists. This declaration has been prepared in accordance with ISO 21930 (1), ISO...
A Regionalized Industry Average EPD for Canadian Softwood Lumber
This is a Canadian regionalized industry wide (average) business-to-business Type III environmental product declaration (EPD) for softwood lumber. This declaration has been prepared in accordance with ISO 21930 (1), ISO...
A Regionalized Industry Average EPD for Canadian Wood Trusses
This is a Canadian regionalized industry wide (average) business-to-business Type III environmental product declaration (EPD) for pre-fabricated wood trusses. This declaration has been prepared in accordance with ISO 21930 (1),...
Reciprocal Framing Systems
...particularly when a project calls for innovative solutions. He is a three-time recipient of the WoodWorks Building the Future engineer award, and has received awards for his work in wood,...
Wood Solutions Conference: Moncton 2026
Mark your calendars! WoodWorks Atlantic and the Canadian Wood Council are pleased to present the Wood Solutions Conference in Moncton this fall — and we want you there.  ...
Wood Design: A Guide for Architects and Educators
This Guide is designed to help educators increase wood content in their already crowded curricula, exposing students to the unique challenges and opportunities of designing with advanced wood systems, within...
For many years, the design values of Canadian dimension lumber were determined by testing small clear samples. Although this approach had worked well in the past, there were...
Few countries are shaped so profoundly by geography and distance as Canada, a nation that stretches across landscapes so expansive and varied that connection has always been...
“Durability by design” is the most important aspect of durable solutions.  It starts with using dry wood, storing it appropriately to ensure it stays dry, and then...
Course Overview The Sizer Course provides an in-depth introduction to the WoodWorks Sizer Program, a powerful tool for designing and analyzing structural elements such as...
Tall Wood Feasibility Study: Mass Timber and Concrete explores the economic, construction, and environmental performance of a proposed 12-storey residential development in...
In addition to combustible, heavy timber and noncombustible construction, a new construction type is presently being considered for inclusion into the National Building Code...
This is a Canadian industry wide (average) business-to-business Type III environmental product declaration (EPD) for pre-fabricated wood I-joists. This declaration has been...
This is a Canadian regionalized industry wide (average) business-to-business Type III environmental product declaration (EPD) for softwood lumber. This declaration has been...
This is a Canadian regionalized industry wide (average) business-to-business Type III environmental product declaration (EPD) for pre-fabricated wood trusses. This...
Course Overview This presentation will provide an overview of reciprocal framing systems, showing examples of well-known structural forms such as lamella arches, as well as...
Mark your calendars! WoodWorks Atlantic and the Canadian Wood Council are pleased to present the Wood Solutions Conference in Moncton this fall — and we want you there....
This Guide is designed to help educators increase wood content in their already crowded curricula, exposing students to the unique challenges and opportunities of designing...
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