Chapter 2 controls the vocabulary of the code. If a term is defined here, that definition governs every chapter that uses it.
At a Glance
| Lens | Notes |
|---|---|
| Chapter focus | Definitions |
| Why it matters | Chapter 2 controls the vocabulary of the code. If a term is defined here, that definition governs every chapter that uses it. |
| In the field | This chapter matters in disputes and edge cases. Inspectors, designers, and contractors lean on it when a common-language reading does not match the code meaning. |
Core Fundamentals
- Defined terms are mandatory code language, not suggestions.
- A small wording change can move a system from one rule set into another.
- The best way to win a code argument is often to start with the definition, not the opinion.