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Drying of balsam and subalpine fir: for a better understanding

https://library.fpinnovations.ca/en/permalink/fpipub52906
Author
Lavoie, Vincent
Date
November 2019
Material Type
Research report
Field
Wood Manufacturing & Digitalization
moisture content Wet pockets Vincent Lavoie, Senior Researcher, Smart Manufacturing DRYING OF BALSAM
Author
Lavoie, Vincent
Date
November 2019
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Air drying
Balsam
Drying
Fir
Logs
Lumber
Moisture content
Performance
Sawmills
Subalpine fir
Wet pockets
Wood yards
Series Number
FPI WP 2019
Language
English
Abstract
The findings of recent studies from both eastern and western Canada have shown that the drying behaviour of subalpine fir (A. lasiocarpa) and balsam fir (A. balsamea) is similar, which allows common solutions to be applied based on research conducted on one species of fir or the other. This article summarizes previous research findings and good practices that can be adopted in the short term to improve the drying of fir.
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Instrumentation for monitoring performance in a six-storey building in Vancouver built for high energy performance

https://library.fpinnovations.ca/en/permalink/fpipub7512
Author
Wang, Jieying
Thomas, Tony
Date
March 2018
Edition
49833
Material Type
Research report
Field
Sustainable Construction
Author
Wang, Jieying
Thomas, Tony
Contributor
Natural Resources Canada. Canadian Forest Service
Date
March 2018
Edition
49833
Material Type
Research report
Physical Description
24 p.
Sector
Wood Products
Field
Sustainable Construction
Research Area
Advanced Wood Materials
Subject
Monitoring
Performance
Buildings
Energy
Moisture content
Air
Series Number
Transformative Technology ; TT 2018
Language
English
Abstract
This report documents the instrumentation installed for monitoring moisture, indoor air quality and differential movement performance in a six-storey building located in the City of Vancouver. The building has five storeys of wood-frame construction above a concrete podium, providing 85 rental units for residential and commercial use. It was designed and built to meet the Passive House standard and, once certified, will be the largest building in Canada that meets this rigorous energy standard. Although the design and construction focused on integrating a number of innovative measures to improve energy efficiency, much effort was also made to reduce construction costs. One example of the design measures is the use of a highly insulating exterior wall assembly that integrates rigid insulation between two rows of wall studs as interior air and vapour barriers. This monitoring study aims to generate data on long-term performance as part of FPInnovations’ effort to assist the building sector in developing durable and energy efficient wood-based buildings, which is expected to translate into reduced energy consumption and carbon emissions from the built environment. The monitoring focuses on measuring moisture performance of the building envelope (i.e., exterior walls, roof, and sill plates); indoor environmental quality including temperature, humidity, and CO2; and vertical differential movement between exterior walls and interior walls below roof/roof decks. In total, 79 instruments were installed during the construction. The next steps of this study will focus on collecting and analysing data from the sensors installed, and assessing performance related to the building envelope and vertical differential movement. FPInnovations will also collaborate with CanmetENERGY of Natural Resources Canada to monitor heat recovery ventilators and to assess whole-building energy efficiency and occupant comfort. This is expected to start after the mechanical systems are fully commissioned during occupancy. Results of these upcoming phases of work will be published in future reports.
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Séchage du sapin baumier et subalpin: pour une meilleur compréhension

https://library.fpinnovations.ca/en/permalink/fpipub52907
Author
Lavoie, Vincent
Date
November 2019
Material Type
Research report
Field
Wood Manufacturing & Digitalization
Author
Lavoie, Vincent
Date
November 2019
Material Type
Research report
Physical Description
4 p.
Sector
Wood Products
Field
Wood Manufacturing & Digitalization
Research Area
Advanced Wood Manufacturing
Subject
Air drying
Balsam
Drying
Fir
Logs
Lumber
Moisture content
Performance
Sawmills
Subalpine fir
Wet pockets
Wood yards
Series Number
FPI WP 2019
Language
French
Abstract
Des travaux récents tant dans l’est que dans l’ouest du Canada ont montré que le comportement au séchage du sapin subalpin (A. lasiocarpa) et du sapin baumier (A. balsamea) est similaire, ce qui permet une application de solutions communes à partir de travaux effectués sur l’une ou l’autre variété de sapin. Le présent document se veut une revue sommaire de résultats de travaux antérieurs et de bonnes pratiques pouvant être adoptées à court terme pour améliorer le séchage de cette essence.
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