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5 records – page 1 of 1.

Connections for CLT Diaphragms in Steel-Frame Buildings

https://research.thinkwood.com/en/permalink/catalogue1594
Year of Publication
2014
Topic
Connections
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Author
Joyce, Tom
Smith, Ian
Organization
NEWBuildS
Year of Publication
2014
Country of Publication
Canada
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Hybrid Building Systems
Topic
Connections
Mechanical Properties
Keywords
Steel
Connections
Self-Tapping Screws
Fabrication
Strength
Stiffness
Ductility
Language
English
Research Status
Complete
Summary
The high performance in-plane of cross laminated timber (CLT) panels has created a potential for the use of CLT members act as diaphragms in steel structures. The behaviour of this diaphragm system depends strongly on the connections involved in linking the panels together and to the steel members. A study of the connections at both locations was made using experimental testing of two connection designs for the panel-to-panel case, and the development of a staggered lag screw connection for the panel-to-steel beam case. The results showed good performance for the double spline and fully-threaded inclined screws panel-to-panel connections. The lag screw connection showed high strength, stiffness, and ductility. The CSA Standard O86-09 was found to best predict the strength of both types of connections. Characteristic design stiffness values were presented for the stiffness at low levels of displacement and the initial, elastic stiffness.
Online Access
Free
Resource Link
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Design Process of a Free-Form Structure Using CLT Panels - Analysis of an Architectural Large Scale Structure

https://research.thinkwood.com/en/permalink/catalogue1640
Year of Publication
2016
Topic
Design and Systems
Material
CLT (Cross-Laminated Timber)
Author
Tolszczuk-Leclerc, Zoé
Bernier-Lavigne, Samuel
Salenikovich, Alexander
Potvin, André
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Topic
Design and Systems
Keywords
Fabrication
CNC
Free-Form
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 3179-3186
Summary
This research is about the design process, development and fabrication of a free-form structure in crosslaminated timber (CLT) panels. Since sustainability, ecology and structural design are now relevant in any building project, the purpose of this research is to demonstrate that CLT panels can be used as an ecoresponsive strategy based on a building form. This paper presents the use of a tessellation construction system for designing and producing a freeform surface in CLT for a specific regional and industrial context. The research/creation process and the retroactive simulation generated by the parametric modelling software enabled the development of a singular architectural project where the structural aspect and the manufacturing are the inherent part of the integrated design process. Finally, the cutting files can be generated automatically for an easy transfer to CNC machine tools.
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
Country of Publication
United States
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
Language
English
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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Mass Timber, Small Format: Creative Applications of Fabrication Off-cuts

https://research.thinkwood.com/en/permalink/catalogue2798
Topic
Environmental Impact
Cost
Market and Adoption
Material
CLT (Cross-Laminated Timber)
MPP (Mass Plywood Panel)
Organization
TallWood Design Institute
University of Oregon
Country of Publication
United States
Material
CLT (Cross-Laminated Timber)
MPP (Mass Plywood Panel)
Topic
Environmental Impact
Cost
Market and Adoption
Keywords
Fabrication
Off-cuts
Cutouts
Furniture
Joinery
Open Source
Digital Design
Digital Fabrication
Research Status
In Progress
Notes
Project contacts are Linda Zimmer and Cory Olsen at the University of Oregon
Summary
During the testing and fabrication of mass timber projects a natural byproduct inevitably occurs in the form of offcuts and cutouts. In the case of new mass timber structures, the engineered wood materials are typically fabricated and prepared off site, allowing for the majority of the leftover materials to be made into useful products at the same facility already ideally set up for further digital fabrication. While the thickness of many of the spare panelized elements under investigation/production at TDI might seem excessive for smaller scale elements, the digital design and production techniques already being used allow for a fine degree of precision commensurate with furniture joinery. We propose to experiment with designing and fabricating furniture scale components and furniture prototypes as a way to reclaim these otherwise unused timber products. This project captures off cuts and remaindered materials from structural testing at TDI in both CLT and MPP panels. Our focus is the design and fabrication of freestanding furnishings (ex: stools, benches, tables, chairs) that will exploit the technologies available at the Emmerson Lab. We come at this with two perspectives: in the first, products could be made directly from the materials available; in the second, the output will act as a formwork or “jig” to facilitate construction of an entirely new prototype that could expand into additional material languages. In either case it is important to us to share digital files of prototypes as “open source” designs so that production facilities and design professionals can work together to reduce waste and/or use our designs as a springboard to customize their own pieces. In this way we address the stated program goals to expand and develop new products and building components and to foster markets for these. Our iterative approach to digital design and digital hybrids utilizes CNC/robotic fabrication and assembly and we will be testing our ideas in a design-build format.
Resource Link
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Performance of Glue-Laminated Beams from Malaysian Dark Red Meranti Timber

https://research.thinkwood.com/en/permalink/catalogue1822
Year of Publication
2018
Topic
Mechanical Properties
Material
Glulam (Glue-Laminated Timber)
Application
Beams