Skip header and navigation

Refine Results By

10 records – page 1 of 1.

Risk of Moisture in Diffusionally Open Roofs with Cross-Laminated Timber for Northern Coastal Climates

https://research.thinkwood.com/en/permalink/catalogue2355
Year of Publication
2020
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Application
Roofs
Author
Sadlowska-Salega, Agnieszka
Was, Krzysztof
Publisher
MDPI
Year of Publication
2020
Country of Publication
Switzerland
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Roofs
Topic
Moisture
Keywords
Moisture Condensation
Critical Moisture Content
Diffusively Open
Hygrothermal Calculation
Language
English
Research Status
Complete
Series
Buildings
Online Access
Free
Resource Link
Less detail

Solutions for Upper Mid-Rise and High-Rise Mass Timber Construction: Rehabilitation of Mass Timber Following Fire and Sprinkler Activation

https://research.thinkwood.com/en/permalink/catalogue2089
Year of Publication
2019
Topic
Fire
Moisture
Material
Timber (unspecified)
Application
Wood Building Systems
Author
Ranger, Lindsay
Organization
FPInnovations
Year of Publication
2019
Country of Publication
Canada
Format
Report
Material
Timber (unspecified)
Application
Wood Building Systems
Topic
Fire
Moisture
Keywords
Mid-Rise
High-Rise
Damage
Repairs
Sprinklers
Language
English
Research Status
Complete
Summary
The intent of this project is to research evaluation and rehabilitation methods that are applicable to mass timber structures following a fire. This includes addressing both fire damage and water damage from sprinkler activation and/or the use of firefighting hoses. This report provides an overview of the type of damage that might be expected following a fire and methods that might reduce potential damage (including design elements and firefighting tactics). Current and existing rehabilitation methods for wood construction will be reviewed and their applicability to mass timber structures will be discussed. This includes the ability to conduct condition assessments and repairs on building elements that can be done in place. The overall objective is to reduce uncertainty related to mass timber construction, which ultimately would allow for more accurate risk evaluation by insurance companies.
Online Access
Free
Resource Link
Less detail

Monitoring Moisture Performance of Cross-Laminated Timber Building Elements during Construction

https://research.thinkwood.com/en/permalink/catalogue2102
Year of Publication
2019
Topic
Site Construction Management
Moisture
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems

Development of a Smart Timber Bridge (Phase III): Moisture and Strain Sensor Investigation for Historic Covered Bridges

https://research.thinkwood.com/en/permalink/catalogue2182
Year of Publication
2019
Topic
Moisture
Material
Glulam (Glue-Laminated Timber)
Other Materials
Application
Bridges and Spans
Author
Phares, Brent
Pence, Trevor
Wacker, James
Hosteng, Travis
Year of Publication
2019
Country of Publication
United States
Format
Report
Material
Glulam (Glue-Laminated Timber)
Other Materials
Application
Bridges and Spans
Topic
Moisture
Keywords
Moisture Content
Sensor
Strain
Reliability
Accuracy
Language
English
Research Status
Complete
Series
General Technical Report
Summary
Nationwide, bridges are deteriorating at a rate faster than they can be rehabilitated and maintained. This has resulted in a search for new methods to rehabilitate, repair, manage, and construct bridges. As a result, structural health monitoring and smart structure concepts have emerged to help improve bridge management. In the case of timber bridges, however, a limited amount of research as been conducted on long-term structural health monitoring solutions, and this is especially true in regards to historic covered timber bridges. To date, evaluation efforts of timber bridges have focused primarily on visual inspection data to determine the structural integrity of timber structures. To fill this research need and help improve timber bridge inspection and management strategies, a 5-year research plan to develop a smart timber bridge structure was undertaken. The overall goal of the 5-year plan was to develop a turnkey system to analyze, monitor, and report on the performance and condition of timber bridges. This report outlines one phase of the 5-year research plan and focuses on developing and attaching moisture sensors onto timber bridge components. The goal was to investigate the potential for sensor technologies to reliably monitor the in situ moisture content of the timber members in historic covered bridges, especially those recently rehabilitated with glulam materials. The timber-specific moisture sensors detailed in this report and the data collected from them will assist in advancing the smart timber bridge.
Online Access
Free
Resource Link
Less detail

Moisture Monitoring Data of Mass Timber Elements During Prolonged Construction Exposure: The Case of the Forest Science Complex (Peavy Hall) at Oregon State University

https://research.thinkwood.com/en/permalink/catalogue2212
Year of Publication
2019
Topic
Moisture
Site Construction Management
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Author
Riggio, Mariapaola
Schmidt, Evan
Mustapha, Gamal
Publisher
Frontiers Media
Year of Publication
2019
Country of Publication
Switzerland
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Moisture
Site Construction Management
Keywords
Peavy Hall
Hygrothermal Monitoring
Language
English
Research Status
Complete
Series
Frontiers in Built Environment
Online Access
Free
Resource Link
Less detail

Determination of the Moisture Change Behavior of Cross-Laminated Timber Using an Optical Flow Based Computer Vision Technique

https://research.thinkwood.com/en/permalink/catalogue2229
Year of Publication
2019
Topic
Moisture
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Hofinger, Markus
Pock, Thomas
Moosbrugger, Thomas
Publisher
Taylor&Francis Online
Year of Publication
2019
Country of Publication
United Kingdom
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Moisture
Keywords
Deformation
Swelling
Shrinkage
Language
English
Research Status
Complete
Series
Wood Material Science & Engineering
Online Access
Free
Resource Link
Less detail

Innovative Strategies to Protect Concrete Bridge Decks and Cross-Laminated Timber Structures through the Use of Impermeable Overlays

https://research.thinkwood.com/en/permalink/catalogue2281
Year of Publication
2019
Topic
Moisture
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Bridges and Spans
Floors

VaproShield Mass Timber Building Enclosure Design Guide

https://research.thinkwood.com/en/permalink/catalogue2347
Year of Publication
2019
Topic
Moisture
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Building Envelope
Author
Brown, Bailey
Finch, Graham
DiPlacido, Adam
Organization
RDH Building Science
Year of Publication
2019
Country of Publication
United States
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Building Envelope
Topic
Moisture
Design and Systems
Keywords
Mass Timber
Air Barrier Membrane
Roof Underlayments
Enclosure Design
Water-Resistive Barrier
Language
English
Research Status
Complete
Summary
Mass timber and CLT construction offers many advantages, such as enhanced modularity, reduced construction schedules, improved thermal performance, and material sustainability. However, mass timber’s propensity to absorb moisture from the environment and the relative vapor impermeability of CLT panels introduces unique challenges when incorporated with the building enclosure. These challenges should be considered during design and construction phases to ensure long-term performance. The VaproShield Mass Timber Building Enclosure Design Guideline covers the best practices for the design and construction of high-performance CLT wall and roof assemblies. RDH is the principal author and editor of the guide and within its capacity, we do not purport to endorse any specific material or technical matter within this guide.
Online Access
Free
Resource Link
Less detail

Identifying Incipient Decay in Douglas-fir Bridge Components using X-Ray Computerized Tomography

https://research.thinkwood.com/en/permalink/catalogue2350
Year of Publication
2019
Topic
Design and Systems
Moisture
Serviceability
Material
Glulam (Glue-Laminated Timber)
Solid-sawn Heavy Timber
Application
Bridges and Spans
Author
Senalik, Christopher
Wacker, James
Wang, Xiping
Wu, Xi
Year of Publication
2019
Country of Publication
United States
Format
Conference Paper
Material
Glulam (Glue-Laminated Timber)
Solid-sawn Heavy Timber
Application
Bridges and Spans
Topic
Design and Systems
Moisture
Serviceability
Keywords
X-ray Computerized Tomography
Wood Timber
Brown Rot Fungus
Incipient Decay
Language
English
Conference
International Nondestructive Testing and Evaluation of Wood Symposium
Research Status
Complete
Summary
In this report, wooden members of sizes typically used in bridge construction are examined using x-ray computerized tomography (CT) to determine the presence of internal decay. This report is part of an overall study in which Douglas-fir (Pseudotsuga menziesii) glue-laminated (glulam) beams and solid sawn timbers were inoculated with brown rot fungus, Fomitopsis pinicola, and exposed to aboveground conditions approximately 25 miles (40 km) north of Gulfport, Mississippi, USA. The goal of the overall study is to develop interior decay within the test specimens and then identify and characterize the decay using a variety of nondestructive testing (NDT) techniques. One NDT technique used is x-ray CT. The pixel brightness (PB) of CT scan images is proportional to the specific gravity (SG) at that location; high SG materials appear brighter whereas low SG materials appear darker. The consumption of wood by fungus decreases the wood SG; however, fungal progression takes place in areas where sufficient moisture is present. The presence of moisture increases wood SG as detected by the CT scan, which masks the effect of the fungal decay, which is a common co-occurrence with many NDT techniques. To identify incipient decay, it is necessary to examine the ring structure both within and outside of the area of moisture. Quantifying the extent of the decay requires correlating the PB to known SG values for both dry wood and wood of varying moisture content. In this report, the relationship between wood SG, moisture content, and PB was quantified.
Online Access
Free
Resource Link
Less detail

Finite Element Modelling of Heat and Moisture Transfer through Cross Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue2414
Year of Publication
2019
Topic
Moisture
Fire
Material
CLT (Cross-Laminated Timber)
LSL (Laminated Strand Lumber)
Application
Wood Building Systems
Walls

10 records – page 1 of 1.