Definitions
Weathering effects are defined as degradation of the improved reaction to fire performance achieved by fire retardant treatments due to exposure to climatic strains, mainly at exterior exposures.
Introduction
Wood is combustible but can still perform very well in fires. However, visible wood surfaces may not fulfill the fire requirements in building codes, and fire retardant treatments may be an option. However, the excellent fire performance of the virgin fire retardant-treated, FRT, wood products may degrade over time, especially in outdoor applications due to climate strains as rain and UV exposure.
There are two different stages of a fire scenario to be considered in the fire safety design of buildings in relation to building materials and structures. These are the initial and the fully developed fire. In the initial fire, the building content is of major importance, but it is not regulated in building...
References
AS 3959. Construction of buildings in bush-fire-prone areas. Appendix F3. Bush-fire-resisting timber. Australian standard
AS ISO 9705. Fire tests–full-scale room test for surface products. Australian standard
ASTM D 2898. Standard practise for accelerated weathering of fire-retardant-treated wood for fire testing. American standard
ASTM D 3201. Standard practise for hygroscopic properties of fire-retardant wood and wood-based products. American standard
ASTM D 5516. Standard method for evaluating the mechanical properties of fire-retardant treated softwood plywood exposed to elevated temperatures. American standard
ASTM D 5664. Standard method for evaluating the effects of fire-retardant treatments and elevated temperatures on strength properties of fire-retardant treated lumber. American standard
ASTM D 6305. Standard practise for calculating bending strength design adjustments factors for fire-retardant-treated plywood roof sheathing. American standard
ASTM E 84. Standard test method for surface burning characteristics of building materials. American standard
EN 13501-1. Fire classification of construction products and building elements – part 1: classification using test data from reaction to fire tests. European standard
EN 13823. Reaction to fire tests for building products – building products excluding floorings – exposed to the thermal attack by a single burning item, SBI test. European standard
EN 16755. Durability of reaction to fire performance of FRT wood-based products in interior and exterior end-use applications. European Standard
EN ISO 11925-2. Reaction to fire tests – ignitability of building products subjected to direct impingement of flame – part 2: single-flame source test. European standard
Holmes CA (1973). Correlation of ASTM exposure tests for evaluating durability of fire-retardant treatment of wood. Forest Products Laboratory, Res. Paper FPL 194 USDA Forest Service
ISO 5660-1. Fire tests – reaction to fire – part 1: rate of heat release from building products (Cone calorimeter method). International standard
LeVan S, Holmes CA (1986) Effectiveness of fire-retardant treatments for shingles after 10 years of outdoor weathering. Research paper FPL 474, Forest Products Lab Madison, WI, USA
Nussbaum RM (1988) The effect of low concentration fire retardant impregnations on wood charring rate and char yield. J. Fire Sci 6:290–307
Östman BA-L, Tsantaridis LD (1994) Correlation between cone calorimeter and time to flashover in the room fire test. Fire Mater 18:205–209
Östman BA-L, Tsantaridis L (1995) Heat release and classification of fire retardant wood products. Fire Mater 19:253–258
Östman B, Voss A, Hughes A, Hovde PJ, Grexa O (2001) Durability of fire retardant treated wood products at humid and exterior conditions – review of literature. Fire Mater 25:95–104
Östman B, Tsantaridis L (2007) Durability of the fire performance for FRT wood products at different end use applications, Proceedings Interflam 2007. Interscience Communications, London, pp 33–44
Östman BA-L, Tsantaridis LT (2017) Durability of the reaction to fire performance for fire retardant treated wood products in exterior applications – a ten year report. Int Wood Prod J 8(2):94–100
ULC S102. Standard method of test for surface burning characteristics of building materials and assemblies. Canadian standards
Winandy, JE (2001) Thermal degradation of fire-retardant-treated wood: Predicting residual service life. For Prod J 51(2), pp 47--54
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Section Editor information
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG
About this entry
Cite this entry
Östman, B. (2018). Weathering Effects on Fire Retardant Wood Treatments. In: Manzello, S. (eds) Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires. Springer, Cham. https://doi.org/10.1007/978-3-319-51727-8_67-1
Download citation
DOI: https://doi.org/10.1007/978-3-319-51727-8_67-1
Received:
Accepted:
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-51727-8
Online ISBN: 978-3-319-51727-8
eBook Packages: Springer Reference EngineeringReference Module Computer Science and Engineering