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Title: Analytical Methods for Determining Fire Resistance of Timber Members

Source: SFPE Handbook of Fire Protection Engineering, Fouth Edition, 2008, pp. (4)346-366; 2008

Author(s): White

Publication Year: 2008  View PDF »

Related Publications: view

Category: Journal Articles
Associated Research Project(s):   FPL-4723-2

Abstract: The fire resistance ratings of wood members and assemblies, as of other materials, have traditionally been obtained by testing the assembly in a furnace in accordance with ASTM International (ASTM) Standard E119,1 International Organization for Standardization (ISO) Standard 834,2 and similar standards. These ratings are published in listings, such as Underwriters Laboratories Fire Resistance Directory,3 Gypsum Association's Fire Resistance Design Manual,4 American Wood Council's Design for Code Acceptance publications,5 and those in building codes.6 The ratings listed are limited to the actual assembly tested and normally do not permit modifications such as adding insulation, changing member size, changing interior finish, or increasing the spacing between members. Code interpretation of test results sometimes allows the substitution of larger members, thicker or deeper assemblies, smaller member spacing, and thicker protection layers, without reducing the listed rating. ASTM Standard E20327 provides guidelines on such extension of fire resistance results obtained from the standard ASTM E119 fire test.

Keywords: Char; Douglas fir; plywood; fire testing; laminated wood; testing; veneers; gypsum; wood flammability; flammability; thermal properties; fireproofing agents; fireproofing of wood; timber; wooden beams; fire resistance; gypsum board; fire retardants; fire hazard; ASTM E 119; thermal degradation

File size: 570 kb(s)

Date posted: 04/27/2009

This publication is also viewable on Treesearch:  view
RITS Product ID: 29682

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