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Correct Temperature Measurements in Fire Exposed Wood

https://research.thinkwood.com/en/permalink/catalogue2025
Year of Publication
2018
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Author
Fahrni, Reto
Schmid, Joachim
Klippel, Michael
Frangi, Andrea
Organization
ETH Zurich
Year of Publication
2018
Format
Conference Paper
Material
CLT (Cross-Laminated Timber)
Topic
Fire
Keywords
Temperature
Thermocouples
Charring
Conference
World Conference on Timber Engineering
Research Status
Complete
Summary
The performance of timber in fire is often assessed by measuring the temperature at different positions in the specimen. As timber is a low conductive material, it can be difficult to measure the correct temperature.Therefore, this paper shows how to correctly measure the temperature in timber members and how to describe temperature measurements of fire tests and experiments non-ambiguously.Typical temperature measurement setups used in tests and experiments were experimentally assessed under ISO/EN fire exposure and a constant incident radiant heat flux. By comparing the charring depth and the thermocouple readings(charring temperature 300°C) it was found that only the wire thermocouples inlaid parallel to the isotherms deliver correct temperature readings. For other temperature measurement setups, the underestimation was between 5 and 20 minutes.Due to the numerous factors influencing the measurement error, no correction factor could be defined.
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
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
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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Preliminary CLT Fire Resistance Testing Report

https://research.thinkwood.com/en/permalink/catalogue377
Year of Publication
2012
Topic
Fire
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Organization
FPInnovations
Year of Publication
2012
Format
Report
Material
CLT (Cross-Laminated Timber)
Application
Wood Building Systems
Topic
Fire
Keywords
Full Scale
Fire Resistance
Type X Gypsum Board
Thermocouples
Research Status
Complete
Summary
FPInnovations is involved in a large research project regarding CLT construction. One objective of this research is the creation of a design methodology for calculating the fire-resistance of CLT assemblies/construction. This methodology will foster the design of fire-safe buildings of wood or hybrid construction. In order to establish such calculation methods, a series of experimental tests has been undertaken. A total of eight full-scale CLT fire resistance tests have been conducted at the NRC fire laboratory where the panels were subject to the standard ULC S101 [1] fire exposure. The series consisted of three wall and five floor tests. Each test was unique using panels with a different number of plies and varying thicknesses. Some of the assemblies were protected using CGC Sheetrock® FireCode® Core Type X gypsum board while others were left unprotected.
Online Access
Free
Resource Link
Less detail