Lecture Notes: Understanding the International Residential Code (IRC) - Part 2

Introduction

• Focus on navigating the International Residential Code (IRC)
• Aim: Identify where to find specific information

Structure of the IRC

• Table of Contents: Helps navigate the IRC
• Chapters Overview:
  • Part 1: Administrative (Chapter 1)
  • Part 2: Definitions (Chapter 2)
  • Part 3: Building Planning and Construction (Chapters 3-10)
    • Base residential requirements
  • Part 4: Energy (Chapter 11)
    • Focus on energy conservation
  • Part 5: Mechanical (Chapters 12-23)
    • Derived from the International Mechanical Code
  • Part 6: Gas (Chapters 24 and onward)
    • Derived from the International Fuel Gas Code
  • Part 7: Plumbing (Chapters 25-33)
    • Mirrors the International Plumbing Code
  • Part 8: Electrical (Chapters 34-43)
  • Part 9: Reference Standards
  • Appendix: Non-mandatory, for better understanding

Chapter and Section Numbering

• Main Sections:
  • R = Residential
  • N = Energy
  • M = Mechanical
  • G = Gas
  • P = Plumbing
  • E = Electrical
• Numbering System:
  • Three-digit numbers: Chapters 1-9
  • Four-digit numbers: Chapters 10-44
• Example:
  • R801: Roof ceiling construction
  • R1001: Masonry fireplaces

Using the Code

• Index: Detailed listing; crucial for exams
• Table of Contents: Less detailed but useful
• Key Chapters:
  • Chapter 2: Definitions
  • Chapter 10: Chimneys and Fireplaces
  • Chapter 13: General Mechanical Requirements
  • Chapter 14: Heating and Cooling Equipment
  • Chapter 15: Exhaust Systems
  • Chapter 17: Combustion Air Requirements
  • Chapter 18: Chimneys and Vents
  • Chapter 24: Fuel Gas Code Requirements

Definitions

• Importance of consistent definitions
• Example: "Accessible" for gas shutoff valves

Tips for Exam Preparation

• Use the index and table of contents effectively
• Identify the subject of exam questions
• Use tabs/markers to find sections quickly in the code book

Conclusion

• Overview of IRC layout
• Preparation for the exam using the IRC
• Upcoming: Part 3 with sample questions and practical use of the code book

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This is the end of part two. Be prepared for part three where sample questions will be discussed and solved using the IRC.