Abstract
The thickness of the fire protection material of steel columns should be determined to guarantee the load-bearing capacity of the steel columns during a fire. In Korean standards, the strength capacity of steel columns is evaluated by measuring the axial deflection or surface temperature of only one H-section of 300x300x10x15 or similar dimensions in a fire test. Once the thickness of a fire protection material is approved, it can be applied to any section, regardless of the size and shape. However, in order to properly protect a building from a severe fire, the appropriate thickness of the fire protection material should be determined with consideration of the section factor, size and shape of steel columns in accordance with building regulations. This paper describes a series of full-scale and small-scale fire tests which were conducted on H-section and Rectangular Hollow Section (RHS) steel columns protected with glass fiber reinforced gypsum (GRG) boards and cellulose fiber reinforced cement (CRC) boards. The main factors of the fire tests were the section factor, the section shape and the thickness of the fire protection materials. Simple equations to predict the thickness of a fire protection material of steel sections, accounting for the shape factor and the required fire resistance, are proposed. A comparative study on the efficiency between the newly developed columns with two types of fire boards and the conventional columns with a combination of spray and gypsum boards was also conducted, and results are reported herein.
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ANSI/UL 263 (1997). Fire tests of building construction and material. Underwriters Laboratories Inc., Illinois, USA.
ASFPCM (1994). Fire protection for structural steel in buildings, 2 nd Edition-Revised. Association of Specialist Fire Protection Contractors and Manufacturers Limited, Hampshire, UK.
ASTM E 119 (1995). Standard test methods for fire tests of building construction and material. American Society for Testing and Materials, Pennsylvania, USA.
BSI, BS 476 (1987). Fire tests on building materials and structures Part 20: Method for determination of the fire resistance of elements of construction (general principal). British Standards Institution, London, UK.
CAN/ULC S101 (2004). Standard methods of fire endurance tests of building construction and materials. Underwriters’ Laboratories of Canada, Toronto, Canada.
CEN (1993). Eurocode 3: Design of steel structure-Part1.2: General rules-Structural fire design. European Committee for Standardisation, Brussels, Belgium.
CEN (2002) ENV 13381-4: Test methods for determination to the fire resistance of structural members part 4: Applied protection to steel members. European Committee for Standardisation, Brussels, Belgium.
ICC (2000). International Building Code. International Code Council, International Code Council, Virginia, USA.
Kwon, I. K. (2009). “Development of Analytic Program for Calculation of Fire Resistant Performance on Steel Structures.” Journal of the Regional Association of Architectural Institute of Korea, 11(3), pp. 201–208 (in Korean).
Korean Ministry of Land, Transport and Maritime Affairs (2005). Korean Building Codes. Korean Ministry of Land, Transport and Maritime Affairs, Seoul, Korea (in Korean).
KSF 2257-1 (2005). Methods of fire resistance test for elements of building construction-General requirements. Korean Standard Association (in Korean).
KS D 3503 (2005). Rolled steel for general steel structures. Korean Standard Association, Seoul, Korea (in Korean).
KSF 2257-7 (2006). Methods of fire resistance test for elements of building construction-Specific requirements for columns. Korean Standard Association, Seoul, Korea (in Korean).
Salmon, C. G., Johnson, J. E., and Malhas, F. A. (2009). Steel Structures -design and behavior, 5 th ed. Pearson Prentice Hall Co., New Jersey, USA.
UL (2001). Underwriter Laboratories Directory. the publisher, Underwriters Laboratories Inc., Illinois, USA.
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Note.-Discussion open until August 1, 2012. This manuscript for this paper was submitted for review and possible publication on December 6, 2010; approved on February 6, 2012.
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Kwon, IK., Kwon, YB. Experimental study on the fire resistance of steel columns protected with fire boards. Int J Steel Struct 12, 25–35 (2012). https://doi.org/10.1007/s13296-012-1003-4
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DOI: https://doi.org/10.1007/s13296-012-1003-4