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Chapter 6: Duration of Load and Creep Factors for Cross-Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue825
Year of Publication
2013
Topic
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
General Application
Author
Ciprian Pirvu
Bradford Douglas
Borjen Yeh
Organization
FPInnovations
Binational Softwood Lumber Council
Year of Publication
2013
Country of Publication
Canada
United States
Format
Book Section
Material
CLT (Cross-Laminated Timber)
Application
General Application
Topic
Mechanical Properties
Keywords
Creep
Duration of Load
Time Dependent Behavior
Language
English
Research Status
Complete
Series
CLT Handbook - US Edition
ISBN
978-0-86488-553-1
ISSN
1925-0495
Abstract
Cross-laminated timber (CLT) products are used as load-carrying slab and wall elements in structural systems, thus load duration and creep behavior are critical characteristics that must be addressed in structural design. Given its lay-up construction with orthogonal arrangement of layers bonded with structural adhesive, CLT is more prone to time-dependent deformations under load (creep) than other engineered wood products such as structural glued-laminated timber. Time dependent behavior of structural wood products is addressed in design standards by load duration factors that adjust design properties. Since CLT has been recently introduced into the North American market, the current design standards and building codes do not specify load duration and creep adjustment factors for CLT. Until this can be rectified, an approach is proposed in this Chapter for adopter of CLT systems in the United States. This includes not only load duration and service factors, but also an approach to accounting for creep in CLT structural elements.
Online Access
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Resource Link
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