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137 records – page 1 of 14.

Evolution of the Building Envelope in Modern Wood Construction

https://research.thinkwood.com/en/permalink/catalogue1799
Year of Publication
2017
Topic
Design and Systems
Energy Performance
Moisture
Site Construction Management
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
NLT (Nail-Laminated Timber)
Light Frame (Lumber+Panels)
LVL (Laminated Veneer Lumber)
Application
Building Envelope
Author
Wang, Jieying
Organization
FPInnovations
Year of Publication
2017
Format
Report
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
NLT (Nail-Laminated Timber)
Light Frame (Lumber+Panels)
LVL (Laminated Veneer Lumber)
Application
Building Envelope
Topic
Design and Systems
Energy Performance
Moisture
Site Construction Management
Keywords
Energy Efficiency
Building Envelope
Tall Wood
Wood Infill Walls
Podium Structures
Articulated Buildings
Research Status
Complete
Summary
This report provides an overview of major changes occurred in the recent decade to design and construction of the building envelope of wood and wood-hybrid construction. It also covers some new or unique considerations required to improve building envelope performance, due to evolutions of structural systems, architectural design, energy efficiency requirements, or use of new materials. It primarily aims to help practicioners better understand wood-based building envelope systems to improve design and construction practices. The information provided should also be useful to the wood industry to better understand the demands for wood products in the market place. Gaps in research are identified and summarized at the end of this report.
Online Access
Free
Resource Link
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Study on Effect of Floor Impact Sound Reduction by Double Ceiling on CLT Panel

https://research.thinkwood.com/en/permalink/catalogue1803
Year of Publication
2017
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Author
Tanaka, Manabu
Murakami, Takeshi
Kasai, Yusuke
Publisher
J-STAGE
Year of Publication
2017
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Floors
Topic
Acoustics and Vibration
Keywords
Panels
Sound Reduction Index
Experimental Tests
Impact Sound
Research Status
Complete
Series
Japanese Architectural Institute Environmental Papers
Online Access
Free
Resource Link
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Elastic Response of Cross Laminated Engineered Bamboo Panels Subjected to In-Plane Loading

https://research.thinkwood.com/en/permalink/catalogue1805
Year of Publication
2017
Topic
Mechanical Properties
Material
Other Materials
Author
Archila-Santos, Hector
Walker, Pete
Ansell, Martin
Rhead, Andrew
Lizarazo-Marriaga, Juan
Publisher
ICE Publishing
Year of Publication
2017
Format
Journal Article
Material
Other Materials
Topic
Mechanical Properties
Keywords
Compression
Deformation
Elastic Moduli
Bamboo
Panels
G-XLam
Research Status
Complete
Series
Proceedings of the Institution of Civil Engineers - Construction Materials
Summary
Novel cross-laminated bamboo panels comprising three and five layers (G-XLam3 and G-XLam5) were tested in compression along the main (0°) and the transverse (90°) directions. Linear variable differential transformer (LVDT) and non-contact three-dimensional digital image correlation (DIC) measuring techniques were used separately to measure deformation in the elastic region, and the elastic moduli, Ep C,0 and Ep C,90, were derived. Mean elastic modulus values obtained using LVDTs exhibited a good match with analytically predicted values. In contrast, the elastic values obtained by the DIC method were considerably higher and presented a considerable scatter of results. For instance, the Ep C,0 for G-XLam3 and G-XLam5 panels were 17·22 and 15·67 GPa, and 14·86 and 12·48 GPa, using the DIC and LVDT methods, respectively. In general, G-XLam panels with a fifth of the cross-sectional thickness and twice the density of analogous cross-laminated timber exhibited an approximately two-fold increase in Ep C,0 and Ep C,90. Overall, this research provides guidelines for the assessment and standardisation of the testing procedures for similar engineered bamboo products using contact and non-contact methods and highlights the potential of using G-XLam panels in stiffness-driven applications and in combination with wood for structural purposes.
Online Access
Free
Resource Link
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Basis of Design - Performance-Based Design and Structural CD Drawings for Framework Office Building in Portland, OR

https://research.thinkwood.com/en/permalink/catalogue1827
Year of Publication
2017
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Organization
KPFF Consulting Engineers
Year of Publication
2017
Format
Report
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Topic
Design and Systems
Keywords
Structural
Wind Load
Sustainability
Reliability
Seismic
Earthquake Resistance
Serviceability
Design
Research Status
Complete
Series
Framework: An Urban + Rural Design
Notes
Document includes 100% CD construction drawings
Summary
This document outlines the basis of design for the performance-based design and nonlinear response history analysis of the Framework Project in Portland, OR. It is intended to be a living document that will be modified and revised as the project develops and in response to peer review comments. Performance-based design is pursued for this project because the proposed lateral force-resisting system, consisting of post-tensioned rocking cross-laminated timber (CLT) walls is not included in ASCE/SEI 7-10 Table 12.2-1. Lateral force-resisting systems included in ASCE/SEI 7-10 Table 12.2-1 may be designed for earthquake effects using the prescriptive provisions in ASCE/SEI 7- 10. Lateral force-resisting systems not included are still permitted but must be demonstrated to have performance not less than that expected for included systems. This option is available via the performance-based procedures of ASCE/SEI 7-10 Section 1.3.1.3. Note that lateral forceresisting systems for wind effects are not restricted in ASCE/SEI 7-10. Therefore, design for wind effects will still be approached within the performance-based design framework but in a more state-of-the-practice manner.
Online Access
Free
Resource Link
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Fire Testing for Framework Office Building in Portland, OR

https://research.thinkwood.com/en/permalink/catalogue1828
Year of Publication
2017
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Beams
Columns
Organization
SWRI
Year of Publication
2017
Format
Report
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems
Beams
Columns
Topic
Fire
Keywords
Fire Endurance Tests
Connections
Assembly
Fabrication
Thermocouples
Beam Column Connection
Research Status
Complete
Series
Framework: An Urban + Rural Design
Summary
A. Fire Test Results Summary B. Test 1a (Test 1): Beam-Exterior Column Connection Report C. Test 1a (Test 2): Beam-Exterior Column Connection Report D. Test 1a (Test 3): Beam-Exterior Column Connection Report E. Test 1a (Test 4): Beam-Exterior Column Connection Report F. Test 1b (Test 1): CLT Deck to Beam Report G. Test 1b (Test 2): CLT Deck to Beam Report H. Test 1b (Test 3): CLT Deck to Beam Report I. Test 1c: Penetrations Fire Resistance Rating Report (TBD) J. Test 1d: Wall Fire Resistance Rating Report
Online Access
Free
Resource Link
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Structural Testing for Framework Office Building in Portland, OR

https://research.thinkwood.com/en/permalink/catalogue1829
Year of Publication
2017
Topic
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Walls
Wood Building Systems
Organization
Oregon State University
Portland State University
Year of Publication
2017
Format
Report
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Walls
Wood Building Systems
Topic
Design and Systems
Mechanical Properties
Keywords
Crushing Test
In-Plane Shear Test
Beam-Column Connection
Panels
Earthquake
Research Status
Complete
Series
Framework: An Urban + Rural Design
Summary
A. Structural Test Results Summary B. Test 1, 2, 3: 1. CLT Crushing Test Report 2. Bare CLT Wall Panel Test Report 3. CLT In-Plane Shear Wall Test Report C. Glulam Beam-Column Connection Test Report
Online Access
Free
Resource Link
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Acoustic Testing and Wood Supply for Framework Office Building in Portland, OR

https://research.thinkwood.com/en/permalink/catalogue1830
Year of Publication
2017
Topic
Acoustics and Vibration
Material
CLT (Cross-Laminated Timber)
Application
Floors
Ceilings
Walls
Roofs
Wood Building Systems
Organization
ARUP
StructureCraft
InterTek
Year of Publication
2017
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Floors
Ceilings
Walls
Roofs
Wood Building Systems
Topic
Acoustics and Vibration
Keywords
Sound Transmission
Impact Noise Transmission
Concrete Topping
Research Status
Complete
Series
Framework: An Urban + Rural Design
Summary
A. Shop Drawings and Details for Tests B. Sound and Impact Test Results Summary C. Test 1: Sound and Impact Transmission Test - CLT D. Test 2: Sound and Impact Transmission Test - Concrete Topping E. Test 3a: Sound and Impact Transmission Test - Marmoleum F. Test 3b: Sound and Impact Transmission Test - Marmoleum G. Test 4: Sound and Impact Transmission Test - Carpet H. Test 5a: Sound and Impact Transmission Test - Luxury Vinyl Plank I. Test 5b: Sound and Impact Transmission Test - Luxury Vinyl Plank J. Test 6: Sound and Impact Transmission Test - Mechanical Roof
Online Access
Free
Resource Link
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Improving the Packaging of Crosslaminated Timber: A Master Thesis That Examines the Environment and Methods at Martinsons Såg, Bygdsiljum

https://research.thinkwood.com/en/permalink/catalogue1841
Year of Publication
2017
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Industrial Application
Author
Berglund, Viktor
Publisher
Luleå University of Technology
Year of Publication
2017
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Industrial Application
Topic
Design and Systems
Keywords
Flow Optimisation
Waste Flows
Waste Reduction
Packaging
Littera
Research Status
Complete
Summary
The work was performed at Martinsons Såg in Bygdsiljum, Sweden. Martinsons is Sweden’s largest producer of cross-laminated timber, crosslam. The staff is divided into two shifts with nine workers each. The production consists of three sections, gluing, CNC and shipping. The\ factory was expanded in early 2017 but did not achieve planned output. The last section, the shipping, is a bottleneck. The object of this thesis is to find a layout that solves the bottleneck and improve the working conditions in the shipping, and the pace of the system should be determined by the first process, the pressing. The results from the examination of the system showed that the real bottleneck in the system was the crane. It was slow and is also used in the waste flows. Two packaging stations for the litteras cannot be used because of the flow of the sawdust, lowering the capacity and flexibility in the packaging. Summarised, the crane could not deal with the demands from the rest of the system. The ergonomic problems consisted of bent and twisted backs while the workers pack the littera. This thesis proposes an investment plan to solve these problems. It consists of two investments that expand the building and expand conveyors, thus removing much of the lifting much lifting with the crane. The waste and littera flows are separated to allow the crane to focus on the main flow of littera
Online Access
Free
Resource Link
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Thermal Conductivity Values for Laminated Strand Lumber and Spruce for Use in Hybrid Cross-laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue1861
Year of Publication
2017
Topic
Moisture
Material
LSL (Laminated Strand Lumber)
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Author
Tripathi, Jaya
William Rice, Robert
Publisher
North Carolina State University
Year of Publication
2017
Format
Journal Article
Material
LSL (Laminated Strand Lumber)
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Topic
Moisture
Keywords
Spruce
Specific Gravity
Moisture Content
Thermal Conductivity
Research Status
Complete
Series
BioResources
Summary
This study examined the thermal conductivity as a function of specific gracity and moisture content for laminated strand lumber (LSL) and red spruce. As part of a larger study of heat and mass transfer in cross-laminated timber panels using laminate comprised of both LSL and spruce, the authors measured the thermal conductivity at four moisture content levels. The results showed that the LSL had a higher thermal conductivity value across the entire moisture content range tested. The average difference was just over 8% and the range for both LSL and spruce was from 0.081 W /m-K to 0.126 W /m-K. Comparisons with published solid wood thermal conductivity values across the range were good. There were no reported values of LSL thermal conductivity at various moisture content levels.
Online Access
Free
Resource Link
Less detail

Strategy for Code Implementation of 6 + 2 Wood-Frame Podium Buildings

https://research.thinkwood.com/en/permalink/catalogue1880
Year of Publication
2017
Topic
Design and Systems
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Author
Lanni, Marilyn
Langevin, Marc-André
Dagenais, Christian
Organization
FPInnovations
Year of Publication
2017
Format
Report
Material
Light Frame (Lumber+Panels)
Application
Wood Building Systems
Topic
Design and Systems
Keywords
National Building Code of Canada
Fire Safety
Research Status
Complete
Summary
Sustainable, safe, durable, cost-effective and efficient; wood is used across Canada in occupancy classes such as business, residential, commercial and assembly. In the United States, many mixed-use buildings have been designed as “podium” buildings; a wood structure bearing on a podium of noncombustible construction. The International Building Code includes provisions that allow wood buildings, often housing residential or business occupancies, to be constructed over a podium of noncombustible construction accommodating mercantile or assembly occupancies. The concept of a horizontal fire separation, acting to a certain degree as a “horizontal firewall”, was introduced in the International Building Code in the mid-2000s, allowing the podium to be considered a separate and distinct building from the wood structure that sits overtop. Since podium structures are becoming increasingly “à la mode” in the construction industry, integrating the horizontal fire separation concept into the National Building Code of Canada would allow the industry to benefit from the advantages of wood construction in mixed-use buildings At the request of FPInnovations, this technical report has been prepared as a guideline for the implementation of design provisions for wood podium buildings into the National Building Code of Canada. Various strategies, special considerations, and possible risks for fire safety in this type of building are explored.
Online Access
Free
Resource Link
Less detail

137 records – page 1 of 14.