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10 records – page 1 of 1.

Fire-Resistance of Timber-Concrete Composite Floor Using Laminated Veneer Lumber

https://research.thinkwood.com/en/permalink/catalogue255
Year of Publication
2016
Topic
Connections
Fire
Material
LVL (Laminated Veneer Lumber)
Timber-Concrete Composite
Application
Floors
Author
Ranger, Lindsay
Dagenais, Christian
Cuerrier-Auclair, Samuel
Organization
FPInnovations
Year of Publication
2016
Country of Publication
Canada
Format
Report
Material
LVL (Laminated Veneer Lumber)
Timber-Concrete Composite
Application
Floors
Topic
Connections
Fire
Keywords
High-Rise
Structural Behaviour
Pull-Out Tests
shear connectors
Fire Resistance
Language
English
Research Status
Complete
Summary
There is a need to demonstrate how novel timber-concrete composite floors can span long distances and be a practical alternative to other traditional structural systems. Better understanding of the fire behaviour of these hybrid systems is essential. To achieve this, the fire-resistance of a timber-concrete composite floor assembly, using BC wood products, will be evaluated in accordance with CAN/ULC-S101 [2]. A 2 hr fire resistance rating will be targeted, as this is the current requirement in high-rise buildings for floor separations between occupancies. The structural behaviour of this type of system will also be assessed from conducting pull-out tests of the shear connectors. In conjunction with previous test data, the results of this test will be used to develop an analytical model to assess the structural and fire-resistance of timber-concrete composite floors.
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Solutions for Upper Mid-Rise and High-Rise Mass Timber Construction: Fire Resistance of Mass Timber Laminated Elements

https://research.thinkwood.com/en/permalink/catalogue2088
Year of Publication
2019
Topic
Fire
Application
Walls
Floors
Wood Building Systems
Author
Ranger, Lindsay
Dagenais, Christian
Bénichou, Noureddine
Organization
FPInnovations
Year of Publication
2019
Country of Publication
Canada
Format
Report
Application
Walls
Floors
Wood Building Systems
Topic
Fire
Keywords
Fire Resistance
Mid-Rise
High-Rise
Charring
Language
English
Research Status
Complete
Summary
This project assesses the fire resistance of laminated timber structural systems as wall and floor assemblies. Full-scale tests were conducted to assess structural fire resistance and charring behaviour. This research could be used to expand current fire design provisions and support inclusion of these types of assemblies into Annex B of CSA O86.
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Fire Tests on Loaded Cross-Laminated Timber Wall and Floor Elements

https://research.thinkwood.com/en/permalink/catalogue254
Year of Publication
2014
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Klippel, Michael
Leyder, Claude
Frangi, Andrea
Fontana, Mario
Publisher
International Association For Fire Safety Science
Year of Publication
2014
Country of Publication
Netherlands
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Charring Rate
Canada
Panels
Fire Resistance
Language
English
Conference
Fire Safety Science International Symposium
Research Status
Complete
Notes
February 9-14, 2014, Christchurch, New Zealand
Summary
Cross-laminated timber (CLT) panels are relatively new engineered wood products that can be used as load bearing walls, floors and roof elements in innovative and high quality modern timber structures. The fire behavior of cross-laminated timber panels requires careful evaluation to allow the expansion of CLT elements usage in buildings. A University of British Columbia study has been conducted at the Trees and Timber Institute CNR-IVALSA in San Michele all’Adige, Italy to experimentally evaluate the fire performance of Canadian CLT panels. In total, ten loaded fire tests were performed using standard fire curves (ULC/ASTM and ISO) to study the influence of different cross-section layups on the fire resistance of floor and wall elements and to investigate the influence of different anchors on the fire behavior of wall elements. This paper presents the main results of the experimental analyses and discusses in particular the charring rate, one of the main parameters in fire design.
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Fire Resistance of Cross-Laminated Timber in Japan

https://research.thinkwood.com/en/permalink/catalogue1776
Year of Publication
2016
Topic
Fire
Connections
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Naruse, Tomohiro
Suzuki, Jun-ichi
Mizukami, Tensei
Yasui, Noboru
Kawai, Makoto
Hasemi, Yuji
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Connections
Keywords
Japan
Charring Rate
Failure Modes
Reduced Cross Section Method
Fire Tests
Fire Resistance
Load Bearing Capacity
Insulation
Bolts
Self-Tapping Screws
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 5409-5417
Summary
Fire-testing data, such as charring rates and failure modes of structural elements exposed to ISO-standard fires, for unprotected cross-laminated timber (CLT) panels made of domestic timber were investigated to apply the reduced-cross-section method to CLT panels. For the charring rates, a series of fire tests without loading was conducted...
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Predicting the Fire Resistance of Cross-Laminated Timber Assemblies

https://research.thinkwood.com/en/permalink/catalogue1865
Year of Publication
2012
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems

Structural Response of Cross-Laminated Timber Compression Elements Exposed to Fire

https://research.thinkwood.com/en/permalink/catalogue1338
Year of Publication
2017
Topic
Fire
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Walls
Author
Wiesner, Felix
Randmael, Fredrik
Wan, Wing
Bisby, Luke
Hadden, Rory
Publisher
ScienceDirect
Year of Publication
2017
Country of Publication
Netherlands
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Walls
Topic
Fire
Mechanical Properties
Keywords
Reduced Cross-Section Method
Axial Load
Compressive Load
Deformation
Temperature
Zero-Strength Layer
Language
English
Research Status
Complete
Series
Fire Safety Journal
Summary
A set of novel structural fire tests on axially loaded cross-laminated timber (CLT) compression elements (walls), locally exposed to thermal radiation sufficient to cause sustained flaming combustion, are presented and discussed. Test specimens were subjected to a sustained compressive load, equivalent to 10 % or 20 % of their nominal ambient axial compressive capacity. The walls were then locally exposed to a nominal constant incident heat flux of 50 kW/m2 over their mid height area until failure occurred. The axial and lateral deformations of the walls were measured and compared against predictions calculated using a finite Bernoulli beam element analysis, to shed light on the fundamental mechanics and needs for rational structural design of CLT compression elements in fire. For the walls tested herein, failure at both ambient and elevated temperature was due to global buckling. At high temperature failure results from excessive lateral deflections and second order flexural effects due to reductions the walls’ effective crosssection and flexural rigidity, as well as a shift of the effective neutral axis in bending during fire. Measured average one-dimensional charring rates ranged between 0.82 and 1.0 mm/min in these tests. As expected, the lamellae configuration greatly influenced the walls’ deformation responses and times to failure; with 3- ply walls failing earlier than those with 5-plies. The walls’ deformation response during heating suggests that, if a conventional reduced cross section method (RCSM), zero strength layer analysis were undertaken, the required zero strength layer depths would range between 15.2 mm and 21.8 mm. Deflection paths further suggest that the concept of a zero strength layer is inadequate for properly capturing the mechanical response of fire-exposed CLT compression elements.
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Fire Resistance of Structural Composite Lumber Products

https://research.thinkwood.com/en/permalink/catalogue790
Year of Publication
2006
Topic
Fire
Material
LVL (Laminated Veneer Lumber)
LSL (Laminated Strand Lumber)
PSL (Parallel Strand Lumber)
Author
White, Robert
Organization
Forest Products Laboratory
Year of Publication
2006
Country of Publication
United States
Format
Report
Material
LVL (Laminated Veneer Lumber)
LSL (Laminated Strand Lumber)
PSL (Parallel Strand Lumber)
Topic
Fire
Keywords
Char Rate
Fire Resistance
Language
English
Research Status
Complete
Summary
Use of structural composite lumber products is increasing. In applications requiring a fire resistance rating, calculation procedures are used to obtain the fire resistance rating of exposed structural wood products. A critical factor in the calculation procedures is char rate for ASTM E 119 fire exposure. In this study, we tested 14 structural composite lumber products to determine char rate when subjected to the fire exposure of the standard fire resistance test. Char rate tests on 10 of the composite lumber products were also conducted in an intermediate-scale horizontal furnace. The National Design Specification/Technical Report 10 design procedure for calculating fire resistance ratings of exposed wood members can be used to predict failure times for members loaded in tension. Thirteen tests were conducted in which composite lumber products were loaded in tension as they were subjected to the standard fire exposure of ASTM E 119. Charring rates, observed failure times in tension tests, and deviations from predicted failure times of the structural composite lumber products were within expected range of results for sawn lumber and glued laminated timbers.
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Fire Resistance of Partially Protected Cross-Laminated Timber Rooms

https://research.thinkwood.com/en/permalink/catalogue322
Year of Publication
2015
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Author
Hevia, Alejandro
Organization
Carleton University
Year of Publication
2015
Country of Publication
Canada
Format
Thesis
Material
CLT (Cross-Laminated Timber)
Application
Floors
Walls
Topic
Fire
Keywords
Charring Rate
Fire Behaviour
Panels
Heat Transfer Model
Room Fire
Heat Release Rate
Temperature
Gypsum
Language
English
Research Status
Complete
Summary
This thesis studies the fire behaviour of Cross Laminated Timber (CLT) panels in partially protected rooms. A one-dimensional heat transfer model was developed to determine the fire resistance of CLT floor and wall panels. During this study, three room fire tests were conducted at Carleton University Fire Research Laboratory to determine the maximum percentage of unprotected CLT surface area that will yield similar results to that of a fully protected room. The rooms had a single opening and were constructed entirely using 3-ply, 105 mm thick CLT panels. A non-standard, parametric fire using furniture and clothing as fuel was used and 2 layers of gypsum board were used to cover the ceiling and the protected walls. The Heat Release Rate, temperature, charring rate and gypsum falloff time of each test was collected. The results obtained from the room test were then compared to the numerical heat transfer model to evaluate its accuracy.
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Free
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Fire Resistance of Large-Scale Cross-Laminated Timber Panels

https://research.thinkwood.com/en/permalink/catalogue2219
Year of Publication
2017
Topic
Fire
Mechanical Properties
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Author
Henek, Vladan
Venkrbec, Václav
Novotný, Miloslav
Publisher
IOP Publishing Ltd
Year of Publication
2017
Country of Publication
Czech Republic
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Application
Walls
Wood Building Systems
Topic
Fire
Mechanical Properties
Keywords
Fire Resistance
European Standards
Language
English
Conference
World Multidisciplinary Earth Sciences Symposium
Research Status
Complete
Online Access
Free
Resource Link
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Fire Tests on Timber-Concrete Composite Slabs Using Beech Laminated Veneer Lumber

https://research.thinkwood.com/en/permalink/catalogue1677
Year of Publication
2016
Topic
Fire
Material
LVL (Laminated Veneer Lumber)
Timber-Concrete Composite
Author
Klippel, Michael
Boccadoro, Lorenzo
Klingsch, Eike
Frangi, Andrea
Year of Publication
2016
Country of Publication
Austria
Format
Conference Paper
Material
LVL (Laminated Veneer Lumber)
Timber-Concrete Composite
Topic
Fire
Keywords
Large Scale
Fire Resistance
Fire Test
Beech
Language
English
Conference
World Conference on Timber Engineering
Research Status
Complete
Notes
August 22-25, 2016, Vienna, Austria p. 3942-3949
Summary
At the Institute of Structural Engineering (IBK) of ETH Zurich, the fire behaviour of timber-concrete composite slabs made with beech laminated veneer lumber (LVL) (BauBuche) was investigated. This composite slab is made of a thin plate (depth: 40 mm or 80 mm) using beech LVL and a concrete layer on top (depth: 160 mm or 120 mm). The beech plate acts both as formwork and as tensile reinforcement. This innovative slab system was implemented for the first time in the ETH House of Natural Resources at ETH Zurich. This paper summarizes the results of two largescale fire tests on loaded timber-concrete composite slabs exposed to standard ISO fire. Both fire tests show that the timber-concrete composite slab using beech LVL reaches sufficient fire resistance and integrity for 90 min and 60 min, respectively.
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10 records – page 1 of 1.