4Appendix 4 Structural design for fire conditions
PDF page 298 · AISC 360-22
This appendix provides criteria for the design and evaluation of structural steel components, systems, and frames for fire conditions. These criteria provide for the determination of the heat input, thermal expansion, and degradation in mechanical properties of materials at elevated temperatures that cause progressive decrease in strength and stiffness of structural components and systems at elevated temperatures.
User Note: Throughout this chapter, the term “elevated temperatures” refers to temperatures due to unintended fire exposure only.
The appendix is organized as follows:
4.1. General Provisions 4.2. Structural Design for Fire Conditions by Analysis
User Note: Appendix 4 incorporates provisions reproduced with permission from the International Building Code; Standard Calculation Methods for Structural Fire Protection (ASCE/SEI/SFPE 29); Eurocode 3: Design of Steel Structures, Part 1.2: General Rules, Structural Fire Design; and Eurocode 4: Design of Composite Steel and Concrete Structures, Part 1.2: General Rules, Structural Fire Design. See the Commentary to Appendix 4 for a listing of the specific provisions reproduced with permission from each of these sources.