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Moisture Monitoring and Modeling of Mass-Timber Building Systems

https://research.thinkwood.com/en/permalink/catalogue1833
Year of Publication
2018
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Author
Kordziel, Steven
Glass, Samuel
Pei, Shiling
Zelinka, Samuel
Tabares-Velasco, Paulo
Organization
Forest Products Laboratory
Year of Publication
2018
Country of Publication
Korea
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Topic
Moisture
Keywords
Moisture Monitoring
Hygrothermal Properties
High-Rise
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 20-23,2018. Seoul, Republic of Korea
Summary
The use of mass timber structural products in tall building applications (6–20 stories) is becoming more common around the world including North America. A potential concern is the environmental wetting of mass timber products during construction because such products may dry out more slowly than light-frame structural lumber, and wood, as an organic material, is susceptible to deterioration at elevated moisture contents. In order to better understand the moisture conditions present in high rise timber constructions, a long-term moisture monitoring program was implemented on an eight story, mixed-use, mass timber framed building in Portland, Oregon. The building was monitored with an array of moisture meters to track moisture content throughout the building’s construction and operation. This paper presents data covering a period just over one year starting from the manufacture of crosslaminated timber (CLT) panels. Hygrothermal properties of CLT samples of the same type used in the building were measured in the laboratory, and wetting and drying experiments on representative CLT samples were conducted. Simulated moisture contents using a one-dimensional hygrothermal model compared reasonably well with laboratory experiments and building site measurements.
Online Access
Free
Resource Link
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Moisture Monitoring Throughout the Construction and Occupancy of Mass Timber Builidings

https://research.thinkwood.com/en/permalink/catalogue1834
Year of Publication
2018
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Author
Zelinka, Samuel
Glass, Samuel
Kordziel, Steven
Tabares-Velasco, Paulo
Pei, Shiling
Organization
Forest Products Laboratory
Publisher
University of Victoria
Year of Publication
2018
Country of Publication
Canada
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Topic
Moisture
Keywords
Dimensional Instability
Microbial Attack
Fastener Corrosion
Cracking
Construction
Language
English
Conference
International Conference on New Horizons in Green Civil Engineering
Research Status
Complete
Notes
April 25-27,2018. Victoria, Canada
Summary
This paper presents preliminary findings from an ongoing research program instrumenting CLT buildings to measure wood moisture content. An overview of the research program is presented along with data from first year of moisture monitoring in an 8-story building in Portland, Oregon. This project measures the wood moisture content throughout the construction cycle, including the fabrication, shipping, staging, and erection of the panels. These preliminary field measurements can help characterize moisture changes in CLT during construction and guide the construction of future CLT buildings.
Online Access
Free
Resource Link
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Cross-Laminated Timber Roof Panels at the Promega Corporation Facility: Documenting Installation and Monitoring In-Service Moisture Conditions

https://research.thinkwood.com/en/permalink/catalogue801
Year of Publication
2013
Topic
Serviceability
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Glass, Samuel
Romanin, Jennifer
Schumacher, Jim
Spickler, Kris
Organization
Forest Products Laboratory
Year of Publication
2013
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Serviceability
Moisture
Keywords
Moisture
Temperature
Installation Process
Sensors
Language
English
Research Status
Complete
Summary
The USDA Forest Products Laboratory (FPL) has, for the past two years, been assisting in removing technical barriers to the use of CLT and trying to develop interest in the United States for its utilization. Coincidentally, Promega Corporation, a leader ...
Online Access
Free
Resource Link
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Durability of Structural Lumber Products after Exposure at 82C and 80% Relative Humidity

https://research.thinkwood.com/en/permalink/catalogue784
Year of Publication
2005
Topic
Mechanical Properties
Moisture
Material
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Solid-sawn Heavy Timber
Author
Green, David
Evans, James
Hatfield, Cherilyn
Byrd, Pamela
Organization
Forest Products Laboratory
Year of Publication
2005
Country of Publication
United States
Format
Report
Material
LSL (Laminated Strand Lumber)
LVL (Laminated Veneer Lumber)
Solid-sawn Heavy Timber
Topic
Mechanical Properties
Moisture
Keywords
Aspen
Douglas-Fir
Modulus of Elasticity
Modulus of Rupture
Southern Pine
Poplar
Relative Humidity
SPF
Temperature
Flexural Properties
Language
English
Research Status
Complete
Summary
Solid-sawn lumber (Douglas-fir, southern pine, Spruce– Pine–Fir, and yellow-poplar), laminated veneer lumber (Douglas-fir, southern pine, and yellow-poplar), and laminated strand lumber (aspen and yellow-poplar) were heated continuously at 82°C (180...
Online Access
Free
Resource Link
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Control of Solar-Driven Moisture Diffusion in Cross-Laminated Timber Walls with Absorptive Claddings

https://research.thinkwood.com/en/permalink/catalogue717
Topic
Design and Systems
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Glass, Samuel
Organization
Forest Products Laboratory
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Design and Systems
Moisture
Keywords
Moisture Content
Absorptive Claddings
US
Climates
Research Status
In Progress
Summary
Prior research showed that inward moisture diffusion from absorptive claddings such as brick veneer, stucco, or manufactured stone veneer can be significant in wood-frame walls. The inward migration of moisture is greatest when the cladding is heated by ...
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Expanding the Cross-Laminated Timber Market through Building Moisture Monitoring and Improved Modeling

https://research.thinkwood.com/en/permalink/catalogue719
Topic
Serviceability
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Organization
Colorado School of Mines
Forest Products Laboratory
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Serviceability
Moisture
Keywords
Moisture Content
Building Envelope
Climate
Hygrothermal Models
Long-term
Research Status
In Progress
Notes
Project contacts are Shiling Pei (Colorado School of Mines) and Samuel L. Zelinka (Forest Products Laboratory)
Summary
This project will generate three benchmark data sets for multistory CLT building moisture performance in different climate zones. Data will include moisture contents at key wood components and high moisture risk locations throughout the buildings. A relatively simple, but fully validated, numerical model for analyzing similar building moisture performance will be recommended. These results will be useful for structural engineers and architects to accurately consider moisture in their design of mass timber buildings.
Resource Link
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Evaluating Hygrothermal Performance of Interlocking Cross-Laminated Timber Walls

https://research.thinkwood.com/en/permalink/catalogue804
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Glass, Samuel
Smith, Ryan
Organization
Forest Products Laboratory
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Moisture
Keywords
Climate
Building Envelope
Hygrothermal Performance
US
Interlocking CLT
Moisture
Research Status
In Progress
Summary
Unlike other solid wood panel systems, ICLT panels are manufactured without the use of adhesives or fasteners. Wood members are connected with tongue-andgroove joints within a given layer and with dovetail joints across layers. This reduces cost and allo...
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Expanding the Cross-Laminated Timber Market through Building Moisture Monitoring and Improved Modeling

https://research.thinkwood.com/en/permalink/catalogue2269
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Organization
Colorado School of Mines
Forest Products Laboratory
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
Topic
Moisture
Keywords
Moisture Performance
Moisture Content
Mass Timber
Research Status
In Progress
Notes
Project contacts are Shiling Pei at the Colorado School of Mines and Samuel L. Zelinka at the Forest Products Laboratory
Summary
This project will generate three benchmark data sets for multistory CLT building moisture performance in different climate zones. Data will include moisture contents at key wood components and high moisture risk locations throughout the buildings. A relatively simple, but fully validated, numerical model for analyzing similar building moisture performance will be recommended. These results will be useful for structural engineers and architects to accurately consider moisture in their design of mass timber buildings.
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Durable Solutions for Balconies and Decks in Midrise Buildings

https://research.thinkwood.com/en/permalink/catalogue2536
Topic
Design and Systems
Moisture
Material
Light Frame (Lumber+Panels)
Application
Balconies
Organization
Forest Products Laboratory
Home Innovation Research Labs
Country of Publication
United States
Material
Light Frame (Lumber+Panels)
Application
Balconies
Topic
Design and Systems
Moisture
Research Status
In Progress
Notes
Project contacts are John B. Peavey at Home Innovation Research Labs and Xiping Wang at the Forest Products Laboratory
Summary
The proposed study will evaluate the moisture performance of balconies and decks in midrise multifamily and mixed-use wood-frame buildings with various types of exterior cladding materials. The study will culminate in recommended best practices for balcony and deck construction in midrise wood-frame buildings, with the focus on water management and integration with the primary building enclosure systems. A broad range of finishes and balcony configurations will be evaluated for applications across various construction markets and climatic conditions. The outcome will include a set of specific details and solutions for durable wood-frame deck and balconies with focus on the interface with the exterior wall systems.
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9 records – page 1 of 1.