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The mini-symposium will address contemporary and emerging issues related to using timber as a construction material that suits the needs of 21st century societies. Although not limited to those topics the content of sessions will emphasise the following themes: |
| Session 1 - Use of timber in tall buildings: |
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In recent centuries timber has been used almost exclusively as a construction material for low-rise buildings with a limitation of four storeys being traditional in many countries. The main reason for this is societal fear of fire in urban situations as instanced by great conflagrations in cities of the old world (e.g. Great Fire of London 1666) and the new world (e.g. Great Fire of Boston 1872). However technologies for preventing and suppressing fires have changed and modern performance based building code do not include blanket prohibitions of timber from medium- and high-rise structures. This has altered the paradigm and is allowing timber to reclaim its position as a material which mankind can use to construct tall buildings. Already there are modern 8- and 9-storey buildings being built in Europe and North America for which timber is the primary structural material. Papers under this theme focus on research & development work and case studies involving design and construction of medium- and high-rise buildings employing timer as the sole or a primary construction material. |
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Papers included in this session:
Better than steel? The use of timber for large and tall buildings from ancient times until the present
R. Langenbach
Pushing the limits of platform frame wood construction
C. Ni & M. Popovski & E. Karacabeyli
Development of fireproof glued-laminated timber for use in medium-rise buildings in Japan
T. Harada, D. Kamikawa, K. Myiamoto, T. Ohuchi, M. Miyabayashi, K. Ando & N. Hattori
Design guidelines for an 8-storey hybrid wood-concrete multi-family building
S. Gagnon, W. Munoz, M. Mohammad & K.D. Below
A case study of a 6-storey hybrid wood-concrete office building in Québec, Canada
S. Gagnon & S. Rivest |
| Session 2 - Cross-laminated-timber - A new design principle: |
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Building with massive timber elements has gains further significance in recent years due to supplementation of traditional large sawn timbers and glued-laminated-timbers by a family of products known collectively as Cross-Laminated-Timber (CLT). Originally invented in the 1990’s CLT has since been greatly developed into an internationally accepted high performance material available in plate form or other shapes to create many structural systems. CLT is used in constructions ranging from single family houses, multi-story- and communal buildings to bridges. Many special construction forms exist. Papers under this theme focus on both research & development work and practical applications of CLT. |
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Papers included in this session:
Vertical relative displacements in a medium-rise CLT-building
E. Serrano, B. Enquist & J. Vessby
A study of cross-lamination of a multi-component liquid-retaining timber structure
N.J. Savage, A. Kermani & H. Zhang
Verification processes for cross laminated timber in the frame of EN 1995
R.A. Joebstl
On the architectural qualities of cross laminated timber
A.K. Bejder, P.H. Kirkegaard & A.M. Fisker
Vibration properties of cross laminated timber floors
N. Labonnote & K.A. Malo |
| Session 3 - Modelling the performance of timber structures: |
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The safe and sustainable use of materials in construction necessitates that the life-cycle performance of timber structures can be predicted and reassessed with sufficient accuracy. Recent research achievements in the field of materials science and structural reliability provide a framework for the quantification of safety, serviceability, durability and life-cycle costs of timber structures. The European research project COST Action E55 ‘Modelling the performance of timber structures’ started in 2007 with the objective to provide the basic framework and knowledge required for the efficient and sustainable use of timber as a structural and building material. This Action is a consortium of experts in the fields of timber engineering and structural reliability from 17 European. Papers under this theme present recent results of COST Action E55. |
Papers included in this session:
Failure studies carried out in Europe and a proposal for a standardized failure template
T. Toratti
Moisture-induced stresses in timber-concrete composite structures
M. Fragiacomo & J. Schänzlin
Stress analysis of timber structures under variable humidity conditions by using a multi-Fickian moisture transfer model
S. Fortino, T. Toratti & A.L. Mendicino
Robustness evaluation of timber structures – Results from EU COST Action E55:WG3
P.H. Kirkegaard, J.D. Sørensen, D. Čizmar & P. Dietsch
Robustness analysis of big span glulam truss structure
V. Rajcic, D. Cizmar, P.H. Kirkegaard & J.D. Sorensen |
| Coordinated by: |
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Ian Smith
University of New Brunswick
Canada |
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Gerhard Schickhofer
Graz Univ. of Technology
Inst. Timber Eng. Wood Tech.
Austria |
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Jochen Köhler
Swiss Federal Institute of
Technology ETH
Switzerland |
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Thomas Bogensperger
Graz Univ. of Technology
Inst. Timber Eng. Wood Tech.
Austria |
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