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An Exploration into Tornado Resistant Residential CLT Structures

https://research.thinkwood.com/en/permalink/catalogue2111
Year of Publication
2019
Topic
Wind
Design and Systems
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Glulam (Glue-Laminated Timber)
Application
Wood Building Systems

Development of a Ready-To-Assemble (RTA) Tornado Safe Room Constructed from Cross-Laminated Timber

https://research.thinkwood.com/en/permalink/catalogue716
Topic
Design and Systems
Wind
Material
CLT (Cross-Laminated Timber)
Application
Rooms
Author
Black, Todd
Falk, Bob
Organization
Forest Products Laboratory
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Rooms
Topic
Design and Systems
Wind
Keywords
Ready-To-Assemble
Tornadoes
Lateral Loads
Research Status
In Progress
Summary
Over the past several decades, the market for ready-to-assemble (RTA) products has grown significantly. RTA kitchen cabinets and furniture are commonplace because they can be shipped flat and assembled on site, which has greatly reduced shipping costs associated with an otherwise voluminous product. Packaged with necessary hardware and instructions, these RTA products are typically easy to assemble and fool proof. The development of a standardized safe room using CLT that is ready to assemble, easy to ship, and quick to fabricate on site would not only increase the level of safety for our population but also increase the market opportunity for these engineered wood products. This research is an extension of research by the USDA Forest Service, Forest Products Laboratory, to develop a do-it-yourself safe room constructed from wood that can be incorporated into existing housing and that utilizes commodity wood products. The objective of this project is to develop a RTA tornado safe room and shelter from CLT for use in existing and new residential and commercial construction.
Resource Link
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On the Lateral Stability of Multi-Story Mass-Timber Buildings Subjected to Tornado-Like Wind Field

https://research.thinkwood.com/en/permalink/catalogue1972
Year of Publication
2018
Topic
Wind
Design and Systems
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Author
Bezabeh, Matiyas
Gairola, Anant
Bitsuamlak, Girma
Tesfamariam, Solomon
Popovski, Marjan
Year of Publication
2018
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Wind
Design and Systems
Keywords
Mass Timber
Lateral Load Resisting Systems
Tornadoes
Dynamic
Wind Loading
Lateral Instability
Enhanced Fujita
Boundary Layer Flow
Conference
World Conference on Timber Engineering
Research Status
Complete
Summary
In this paper, we examined the effects of extreme tornadic wind loads on mass-timber buildings. In general, mass-timber buildings utilize pre-engineered wood panels to form their main gravity and lateral load resisting systems. The lightweight nature of timber makes these types of emerging buildings lighter and more flexible than buildings made from concrete, masonry or steel. In general, global lateral instability of buildings can occur when the overturning forces due to wind loads exceed the dead load of the structures. In the present study, wind loads were obtained from laboratory simulations of tornado-like wind field and atmospheric boundary layer flow at Western University, Canada. Tornado wind loads from the laboratory tests were scaled to five Enhanced Fujita wind speeds representing various levels of damage. Dynamic structural analyses were carried out to assess floor level demands. It is shown that extreme tornado wind loads may pose significant damage to mass-timber buildings designed for 1-in-50 wind speed using a load factor of 1.4. Based on the obtained results, design strategies are suggested for mass-timber buildings in tornado-prone areas.
Online Access
Free
Resource Link
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