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47 records – page 1 of 5.

Predicting the Fire Resistance of Cross-Laminated Timber Assemblies

https://research.thinkwood.com/en/permalink/catalogue1865
Year of Publication
2012
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Author
Craft, Steven
Desjardins, Richard
Bénichou, Noureddine
Organization
National Research Council of Canada
Publisher
National Research Council Canada. Construction
Year of Publication
2012
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Topic
Fire
Keywords
Fire Resistance
Assembly
Panels
Full-Scale Fire Test
Full-Scale
Research Status
Complete
Summary
There is growing interest from the Canadian wood products industry to produce and use cross-laminated timber (CLT) panels in construction. Because this is a new product in North America, there is a need to demonstrate that the product meets various performance attributes such as structural resistance, sound transmission and fire resistance. This research aims to address two primary objectives which will support the North American adoption of CLT. First, a generic calculation method for determining the fire-resistance of CLT assemblies is needed to enable producers to manufacture a number of different configurations of panels without the need to run a large number of full-scale fire tests. Second, the CLT assemblies chosen for testing have been identified as the most likely configurations to be used thereby providing test data to support the claims of fire-resistance to help satisfy the authority having jurisdiction.
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Seismic Performance of Wood Mid-Rise Structures

https://research.thinkwood.com/en/permalink/catalogue343
Year of Publication
2013
Topic
Seismic
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Mostafaei, Hossein
Al-Chatti, Qusay
Popovski, Marjan
Tesfamariam, Solomon
Bénichou, Noureddine
Organization
National Research Council of Canada
Year of Publication
2013
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Seismic
Keywords
Mid-Rise
Multi-Storey
Research Status
Complete
Summary
This report provides results of a state-of-the-art literature review of studies and surveys on seismic performance of wood structures. The review was performed to develop an understanding of the seismic response and design of mid-rise/multi-storey wood buildings and to explore gaps and challenges in the seismic design of these structures. This report includes summaries from results of the previous experimental, numerical and analytical studies as well as post-earthquake surveys on seismic response/resistance of wood buildings. The main structural systems considered in this study were wood light frames, commonly used in North America. The results of this review showed the dynamic response characteristics of multi-storey wood buildings, e.g. effects of higher modes, would play a major role in the seismic design of such structures. However, a proper design of timber structures would mitigate their damage and failure in the event of earthquakes.
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Hygrothermal Modelling Benchmark: Comparison of hygIRC Simulation Results with Full Scale Experiment Results (Report to Research Consortium for Wood and Wood-Hybrid Mid-Rise Buildings)

https://research.thinkwood.com/en/permalink/catalogue1950
Year of Publication
2014
Topic
Moisture
Material
Light Frame (Lumber+Panels)
Application
Walls
Author
Cornick, Steven
van Reenen, David
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Walls
Topic
Moisture
Keywords
Hygrothermal Models
Drying Rate
Research Status
Complete
Summary
hygIRC 1D and 2D are hygrothermal simulation models developed at NRC Construction. hygIRC 1D is a one-dimensional version of hygIRC 2D. The objective of the task described in this report was to compare the results derived from the use the hygrothermal simulation models hygIRC 1D and hygIRC 2D to the results of a laboratory experiment (conducted as part of Task 5) to measure the drying rate of a specific wall assembly when subjected to nominally steady state conditions in an environmental chamber. The intended outcome was to duplicate the laboratory results as closely as possible as a means of benchmarking the simulation models both of which were subsequently used as part of the parametric simulation task (Task 6).
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Solutions for Mid-Rise Wood Construction: Cone Calorimeter Results for Acoustic Membrane Materials Used in Floor Assemblies (Report to Research Consortium for Wood and Wood-Hybrid Mid-Rise Buildings)

https://research.thinkwood.com/en/permalink/catalogue1951
Year of Publication
2014
Topic
Acoustics and Vibration
Material
Light Frame (Lumber+Panels)
Application
Floors

Mid-Rise Wood Constructions: Hygrothermal Modelling and Analysis

https://research.thinkwood.com/en/permalink/catalogue6
Year of Publication
2014
Topic
Design and Systems
Moisture
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Author
Abdulghani, Khaled
Swinton, Michael
Cornick, Steve
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Topic
Design and Systems
Moisture
Keywords
Damage
Load Bearing
Moisture Content
Simulation
Hygrothermal
Research Status
Complete
Summary
The objective of the Hygrothermal Modelling and Analysis Task was to estimate the risk of moisture damage to the structural elements of a mid-rise wood building. Specifically, the objective was to characterize the risk of moisture damage to the load-bearing wall components of two wall constructions specified in “MID-RISE WOOD CONSTRUCTIONS – Specifications of Mid-rise Envelopes for Hygrothermal Assessment” Client Report A1-100035-03.1 [ ] due to trapped construction moisture. In general for both wall constructions simulation results tended to point to the exterior of the stud in the Lightweight Wood Frame (LWF) and Cross Laminated Timber (CLT) construction cases to be the area most at risk, specifically toward the exterior surface of the stud. Generally the total Moisture Content (MC) of the stud decreased to an acceptable level within the simulation period however the exterior surface appeared to remain at relatively high of moisture content level for significant periods of time. The presence of wood strapping covering the exterior face of the stud seemed to exacerbate the situation. If a support system for the cladding can be designed that does not rely on wood strapping or covers a minimum area of the stud the performance of this critical area could be improved. If the initial moisture content of the wood materials could be reduced before close up the performance would also be improved for all locations that did not show an increase in moisture content and the RHT index in the second year, at least with respect to computer modelling. This work however was not in scope of the work.
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Solutions for Mid-Rise Wood Construction: Full-Scale Standard Fire Test for Exterior Wall Assembly using a Simulated Cross-Laminated Timber Wall Assembly with Gypsum Sheathing

https://research.thinkwood.com/en/permalink/catalogue10
Year of Publication
2014
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Author
Taber, Bruce
Gibbs, Eric
Lougheed, Gary
Su, Joseph
Bénichou, Noureddine
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Topic
Fire
Keywords
Gypsum
Mid-Rise
Testing
Exterior Walls
Full-Scale
Research Status
Complete
Summary
One of the tasks in the project, Wood and Wood-Hybrid Midrise Buildings, was to develop further information and data for use in developing generic exterior wall systems for use in mid-rise buildings using either lightweight wood frame or cross-laminated timber as the structural elements. This report describes a standard full-scale exterior wall fire test conducted on May 22, 2012 on a simulated cross-laminated timber (CLT) wall assembly with an attached insulated lightweight wood frame assembly protected using gypsum sheathing. The test was conducted in accordance with CAN/ULC-S134.
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Solutions for Mid-Rise Wood Construction: Encapsulation Time Data from NRC Fire-Resistance Projects

https://research.thinkwood.com/en/permalink/catalogue34
Year of Publication
2014
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Author
Lougheed, Gary
Su, Joseph
Bénichou, Noureddine
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
CLT (Cross-Laminated Timber)
Topic
Fire
Keywords
Codes
Construction
Encapsulation
Mid-Rise
National Building Code of Canada
Type X Gypsum Board
Research Status
Complete
Summary
A research project, Wood and Wood-Hybrid Midrise Buildings, was undertaken to develop information to be used as the basis for alternative/acceptable solutions for mid-rise construction using wood structural elements. One of the Tasks in the project was to investigate the effectiveness of three materials for use as encapsulation materials for combustible structural elements: Type X gypsum board, cement board and gypsum-concrete. Cone calorimeter and intermediate-scale furnace tests were conducted for these materials. The results of the tests on these materials using the cone calorimeter and the intermediate-scale furnace are provided in References 3 and 4, respectively. In addition to the tests for the three encapsulation materials, data from previous NRC fireresistance projects were reviewed for data on the encapsulation time for structural elements afforded by gypsum board in the context of standard fire-resistance testing. In this report, the results of the data-mining from several of NRC’s fire-resistance testing projects are provided.
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Free
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Acoustics: Sound Insulation in Mid-Rise Wood Buildings

https://research.thinkwood.com/en/permalink/catalogue37
Year of Publication
2014
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Floors
Walls
Author
Schoenwald, Stefan
Zeitler, Berndt
King, Frances
Sabourin, Ivan
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Floors
Walls
Topic
Acoustics and Vibration
Keywords
Acoustics
Mid-Rise
Sound Insulation
Research Status
Complete
Summary
This client report on the acoustics research component regarding sound insulation of elements and systems for mid-rise wood buildings is structured into a main part and four appendices. The main part outlines the background, main research considerations and summarizes conducted research and major outcomes briefly. It is structured like the Acoustics tasks in the Statement of Work of the Mid-rise Wood research project to identify accomplishments. For details on the research, testing and results, the main part references to four appendices that contain more details including test plans, test methods, specimen descriptions and all test data that is vetted so far.
Online Access
Free
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Fire Safety Summary: Fire Research Conducted for the Project on Mid-Rise Wood Construction

https://research.thinkwood.com/en/permalink/catalogue43
Year of Publication
2014
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Author
Su, Joseph
Lougheed, Gary
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Walls
Topic
Fire
Keywords
Encapsulation
Mid-Rise
Safety
Tall Wood
Exterior Walls
Research Status
Complete
Summary
Working in collaboration with the Canadian Wood Council and FPInnovations and in partnership with Natural Resources Canada and the governments of Ontario, Quebec and British Columbia, the National Research Council conducted a comprehensive research project, Research Consortium for Wood and Wood-Hybrid Mid-rise Buildings. This consortium project aimed to develop technical information that could be used to support acceptable solutions that meet the NBC’s objectives for fire safety, acoustics, and building envelope performance, in order to facilitate the use of wood-based structural materials in mid-rise buildings. The objectives of the Wood and Wood-Hybrid Midrise Buildings research project were to develop performance data and technical solutions in the areas of fire safety, acoustics and building envelope pertinent to the use of wood-based structural materials in mid-rise buildings, i.e. to develop an alternative solution to meet the 2010 NBC requirements for non-combustible construction for 5-6 storey (and taller) buildings. This project was intended to address the immediate needs for technical solutions for mid-rise wood buildings that do not compromise the minimum levels of safety and performance required by the 2010 NBC in the areas of fire safety and fire protection, acoustics, and building envelope performance.
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Free
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Mid-Rise Wood: Characterization of Hygrothermal Properties

https://research.thinkwood.com/en/permalink/catalogue49
Year of Publication
2014
Topic
Design and Systems
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Mukhopadhyaya, Phalguni
Bundalo-Perc, Sladana
van Reenen, David
Wang, Jasmine
Organization
National Research Council of Canada
Year of Publication
2014
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Design and Systems
Moisture
Keywords
Envelope
Exterior Walls
Hygrothermal
Mid-Rise
Research Status
Complete
Summary
To evaluate the building envelope performance of the generic exterior wall assemblies developed for use in mid-rise wood buildings, hygrothermal properties of materials used in the assemblies are needed as input data for hygrothermal modelling. Hygrothermal properties were developed for fire retardant treated plywood, regular gypsum sheathing, spray polyurethane foam and cross-laminated timber. This report documents results of the hygrothermal property determinations. The objective of this part of the research project was to generate a set of reliable and representative data on hygrothermal properties of a number of selected building materials as mentioned below. 1. D-Blaze Treated Plywood 2. Dricon Treated Plywood 3. Gypsum Sheathing 4. Closed Cell Spray Polyurethane Foam Insulation (Purple in Colour)
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Free
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47 records – page 1 of 5.