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Building Envelope Summary: Hygrothermal Assessment of Systems for Mid-Rise Wood Buildings

https://research.thinkwood.com/en/permalink/catalogue250
Year of Publication
2014
Topic
Design and Systems
Fire
Moisture
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Abdulghani, Khaled
Cornick, Steve
Di Lenardo, Bruno
Ganapathy, Gnanamurugan
Lacasse, Michael
Maref, Wahid
Moore, Travis
Mukhopadhyaya, Phalguni
Nicholls, Mike
Saber, Hamed
Swinton, Michael
van Reenen, David
Organization
National Research Council of Canada
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Design and Systems
Fire
Moisture
Keywords
National Building Code of Canada
Mid-Rise
Building Envelopes
Language
English
Research Status
Complete
Summary
The role of the building envelope research team in this project was to assess whether midrise wood-frame (LWF) and cross-laminated timber (CLT) building envelope solutions developed by the fire research team to meet the fire provisions of the National Building Code (NBC) 2010 Part 3 Fire Protection, would also meet the NBC Part 5 Environmental Separation requirements relating to the protection of the building envelope from excessive moisture and water accumulation. As well, these wood-based mid-rise envelope solutions were to be assessed for their ability to meet Part 3 Building Envelope of the National Energy Code for Buildings (NECB) 2011. Requirements relating to heat, air, moisture, and precipitation (HAMP) control by the building envelope are included in Part 5 Environmental Separation of the NBC 2010. Part 5 addresses all building types and occupancies referred to in Part 3, but unlike requirements for fire protection, this section of the code was written more recently and is generic, including requirements that are more objective-oriented rather than prescriptive requirements pegged to specific constructions systems. The investigated methodologies developed and adapted for this study took those code characteristics into account.
Online Access
Free
Resource Link
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Mid-Rise Wood Constructions: Investigation of Water Penetration Through Cladding and Deficiencies

https://research.thinkwood.com/en/permalink/catalogue756
Year of Publication
2014
Topic
Moisture
Wind
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Saber, Hamed
Lacasse, Michael
Moore, Travis
Nicholls, Mike
Organization
National Research Council of Canada
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Moisture
Wind
Keywords
Mid-Rise
Water Penetration
Cladding
Language
English
Research Status
Complete
Summary
The objectives of this work include the following: · Conduct a series of water entry tests over a wide range of simulated wind pressure and WDR loads to measure the water entry rate passing the cladding through deficiencies located in a fibre cement cladding system; A1-100035-03.3 2 · Use the test results to develop correlations for determining the percentage of water entry rate through deficiencies as a function of pressure difference across the assembly and water spray rate onto the cladding surface; · Analyze the water entry data for the NBC stucco cladding for high wind pressures obtained in a previous study (see [3] for more details) and applicable for mid-rise and taller buildings and thereafter develop a correlation to determine the percentage of water entry rate as a function of wind pressure and WDR for absorptive claddings.
Online Access
Free
Resource Link
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Mid-Rise Wood Constructions: Specifications of Mid-Rise Envelopes for Hygrothermal Assessment

https://research.thinkwood.com/en/permalink/catalogue754
Year of Publication
2014
Topic
Serviceability
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Solid-sawn Heavy Timber
Application
Wood Building Systems
Author
Abdulghani, Khaled
Cornick, Steve
Di Lenardo, Bruno
Ganapathy, Gnanamurugan
Lacasse, Michael
Maref, Wahid
Moore, Travis
Mukhopadhyaya, Phalguni
Nicholls, Mike
Saber, Hamed
Swinton, Michael
Organization
National Research Council of Canada
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Light Frame (Lumber+Panels)
Solid-sawn Heavy Timber
Application
Wood Building Systems
Topic
Serviceability
Keywords
Hygrothermal
Mid-Rise
Building Envelope
Long-term
Degradation
Language
English
Research Status
Complete
Summary
The role of the Building Envelope team in this project is to assess whether alternate wood-based building envelope solutions developed by the Fire Team to meet the fire provisions of NBC 2010, also meet NBC Part 5 requirements relating to the protection of the building envelope from long term degradation due to uncontrolled heat, air, moisture and precipitation (HAMP) ingress into the building envelope of mid-rise buildings. In a process of consultations with stakeholders, including the Canadian Wood Council (CWC), FPInnovations, and consultations with NRC’s Fire and Acoustics teams, specifications were developed for 2.44 m x 2.44 m wall specimens that would be investigated for hygrothermal performance.
Online Access
Free
Resource Link
Less detail