FIRE DESIGN OF STEEL MEMBERS - Civil and Natural Resources ...

TABLE OF CONTENTS:
ABSTRACT:.............................................................................................................................. I
ACKNOWLEDGMENTS: .................................................................................................... III
LIST OF FIGURES: ...............................................................................................................IX
1 INTRODUCTION:...........................................................................................................1
1.1 OBJECTIVES:...................................................................................................................1
1.2 PREVIOUS STUDIES:........................................................................................................1
1.3 SCOPE OF THIS REPORT: ..................................................................................................6
1.4 NZS 3404:PART 1:1997 SECTION 11:............................................................................7
1.5 OTHER STEEL CODES .....................................................................................................8
1.5.1 BS 5950:Part 8:1990.............................................................................................8
1.5.2 AS 4100:1990 ........................................................................................................9
1.5.3 ENV 1993-1-2........................................................................................................9
1.6 BACKGROUND INFORMATION:......................................................................................10
1.6.1 Forms of Heat Transfer:......................................................................................10
1.6.2 Thermal Properties of Steel:................................................................................11
1.6.3 Section Factor, H p /A:...........................................................................................15
1.6.4 Methods of steel protection: ................................................................................17
2 FIRES AND THERMAL ANALYSIS COMPUTER MODELS: ..............................19
2.1 SPREADSHEET METHOD: ..............................................................................................19
2.1.1 Introduction:........................................................................................................19
2.1.2 Unprotected Steel: ...............................................................................................20
2.1.3 Protected steel:....................................................................................................21
2.2 ALTERNATIVE FORMULATIONS OF THE SPREADSHEET METHOD: ................................23
2.3 THERMAL ANALYSIS PROGRAMMES:...........................................................................26
2.3.1 SAFIR: .................................................................................................................26
2.3.2 Firecalc: ..............................................................................................................28
2.4 FIRE CURVES: ...............................................................................................................30
2.4.1 Standard Fire – ISO 834: ....................................................................................30
2.4.2 Eurocode Parametric fire:...................................................................................31
3 FIRE SECTION OF THE STEEL CODES:................................................................35
3.1 NZS3404/AS4100:.......................................................................................................35
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