Skip header and navigation

31 records – page 1 of 4.

Development Of CLT Products with Improved Fire Performance

https://research.thinkwood.com/en/permalink/catalogue2598
Year of Publication
2020
Topic
Design and Systems
Fire
Material
CLT (Cross-Laminated Timber)
Author
He, Guangbo
Feng, Martin
Roussiere, Fabrice
Organization
FPInnovations
Year of Publication
2020
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Topic
Design and Systems
Fire
Keywords
Fire Resistance
Adhesives
Bond Durability
Bonding
Treated Wood
Language
English
Research Status
Complete
Summary
The fire resistance of cross-laminated timber (CLT) could be improved by treating the lamina with fire retardants. The major issues with this technology are the reduced bondability of the treated lamina with commercial adhesives. This study assessed several surface preparation methods that could improve the bondability and bond durability of fire-retardant treated wood with two commercial adhesives. Four surface preparation methods, including moisture/heat/pressure, surface planing, surface chemical treatment, and surface plasma treatment were assessed for their impact on the bondability and bond durability of lodgepole pine lamina. The block shear test results indicated that all surface preparation methods were somewhat effective in improving bond performance of fire-retardant treated wood compared to the untreated control wood samples, depending on the types of fire retardants and wood adhesives applied in the treatment process and bonding process. The selection of surface preparation, fire retardant, and wood adhesive should be considered interactively to obtain the best bond properties and fire performance. It may be possible to effectively bond the treated lamina with PUR adhesive without any additional surface preparation for the fire retardant used in the treatment at FPInnovations.
Online Access
Free
Resource Link
Less detail

High Energy Performance Six-Storey Wood-Frame Building: Field Monitoring

https://research.thinkwood.com/en/permalink/catalogue1918
Year of Publication
2019
Topic
Energy Performance
Material
Timber (unspecified)
Application
Walls
Wood Building Systems
Roofs
Rooms
Author
Wang, Jieying
Organization
FPInnovations
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
Timber (unspecified)
Application
Walls
Wood Building Systems
Roofs
Rooms
Topic
Energy Performance
Keywords
Mid-Rise
Durability
Vertical Movement
Indoor Environmental Conditions
Language
English
Research Status
Complete
Summary
This monitoring study aims to generate field performance data from a highly energy efficient building in the west coast climate as part of FPInnovations’ efforts to assist the building sector in developing durable and energy efficient wood-based buildings. A six-storey mixed-use building, with five storeys of wood-frame residential construction on top of concrete commercial space was completed in early 2018 in the City of Vancouver. It was designed to meet the Passive House standard. The instrumentation aimed to gather field data related to the indoor environment, building envelope moisture performance, and vertical movement to address the most critical concerns among practitioners for such buildings.
Online Access
Free
Resource Link
Less detail

Testing R22+ Wood-Frame Walls for Hygrothermal Performance in the Vancouver Climate: Construction and Instrumentation

https://research.thinkwood.com/en/permalink/catalogue1920
Year of Publication
2019
Topic
Energy Performance
Material
Light Frame (Lumber+Panels)
Application
Walls
General Application
Wood Building Systems
Author
Wang, Jieying
Organization
FPInnovations
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Walls
General Application
Wood Building Systems
Topic
Energy Performance
Keywords
Building Codes
Hygrothermal Models
Durability
Design Tools
Language
English
Research Status
Complete
Summary
This study aims to generate moisture performance data for several configurations of highly insulated woodframe walls meeting the RSI 3.85 (R22 eff) requirement for buildings up to six storeys in the City of Vancouver. The overarching goal is to identify and develop durable exterior wood-frame walls to assist in the design and construction of energy efficient buildings across the country. Wall panels, each measuring 1200 mm wide and 2400 mm tall, form portions of the exterior walls of a test hut located in the rear yard of the FPInnovations laboratory in Vancouver. Twelve wall panels in six types of wall assemblies are undergoing testing in this first phase. This report, first in a series on this study, documents the initial construction and instrumentation.
Online Access
Free
Resource Link
Less detail

Illustrated Guide R30+ Effective Vaulted & Flat Roofs

https://research.thinkwood.com/en/permalink/catalogue2348
Year of Publication
2019
Topic
Moisture
Energy Performance
Design and Systems
Material
Light Frame (Lumber+Panels)
Application
Roofs
Author
Marleau, Christopher
Higgins, James
Ricketts, Lorne
Roppel, Patrick
Publisher
BC Housing Research Centre
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Roofs
Topic
Moisture
Energy Performance
Design and Systems
Keywords
Vaulted Roofs
Water-Shedding Roofs
Flat Waterproof Membrane Roofs
Thermal Performance
Moisture Management
Air Leakage
Durability
Language
English
Research Status
Complete
Summary
This Illustrated Guide consolidates information on vaulted water-shedding roofs and flat waterproof membrane roofs that are capable of meeting R-30 or greater effective thermal performance when used on low- and mid-rise wood-frame buildings. The guide is intended to be an industry, utility, and government resource with respect to meeting this thermal performance level, while not compromising other aspects of building enclosure performance, including moisture management, air leakage, and durability.
Online Access
Free
Resource Link
Less detail

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
General Application
Author
Martin, Ulysse
Blanchet, Pierre
Potvin, André
Publisher
North Carolina State University
Year of Publication
2019
Country of Publication
United States
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
General Application
Topic
Energy Performance
Design and Systems
Keywords
Energy Efficiency
Air Leakage
HAM Analysis
Durability Assessment
Language
English
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
Less detail

Influence of Specimen Size on Accelerated Weathering of Laminated Veneer Lumber

https://research.thinkwood.com/en/permalink/catalogue2499
Year of Publication
2019
Topic
Mechanical Properties
Design and Systems
Material
LVL (Laminated Veneer Lumber)
Application
Wood Building Systems
General Application

Solutions for Upper Mid-Rise and High-Rise Mass Timber Construction: High Energy Performance Six-Storey Wood-Frame Building: Field Monitoring

https://research.thinkwood.com/en/permalink/catalogue2599
Year of Publication
2019
Topic
Energy Performance
Design and Systems
Material
Light Frame (Lumber+Panels)
PSL (Parallel Strand Lumber)
Application
Wood Building Systems
Author
Wang, Jieying
Organization
FPInnovations
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
PSL (Parallel Strand Lumber)
Application
Wood Building Systems
Topic
Energy Performance
Design and Systems
Keywords
Mid-Rise
High-Rise
Indoor Environmental Conditions
Durability
Vertical Movement
Language
English
Research Status
Complete
Summary
This monitoring study was initiated to collect performance data from a highly energy efficient, six-storey building located in the coastal climate of British Columbia. This work focuses on the following objectives by installing sensors during the construction: · To provide information about the indoor environment of a highly energy efficient building · To provide field data about the durability performance of an innovative high energy efficiency exterior wall solution for mid-rise wood-frame construction · To provide information on the amounts of vertical movement in wood-frame exterior walls and interior walls below a roof/roof deck
Online Access
Free
Resource Link
Less detail

Ability of Finger-Jointed Lumber to Maintain Load at Elevated Temperatures

https://research.thinkwood.com/en/permalink/catalogue1832
Year of Publication
2018
Topic
Fire
Material
Other Materials
Application
General Application
Author
Rammer, Douglas
Zelinka, Samuel
Hasburgh, Laura
Craft, Steven
Publisher
Forest Products Laboratory
Year of Publication
2018
Country of Publication
United States
Format
Journal Article
Material
Other Materials
Application
General Application
Topic
Fire
Keywords
Small Scale
Full Scale
Bending Test
Melamine Formaldehyde
Phenol-Resorcinol Formaldehyde
Creep
Polyurethane
Polyvinyl Acetate
Temperature
Durability
Language
English
Research Status
Complete
Series
Wood and Fiber Science. 50(1): 44-54.
Online Access
Free
Resource Link
Less detail

Durability of Mass Timber Structures: a Review of the Biological Risks

https://research.thinkwood.com/en/permalink/catalogue1838
Year of Publication
2018
Topic
Environmental Impact
Serviceability
Material
CLT (Cross-Laminated Timber)
Application
General Application

31 records – page 1 of 4.