Building Code Glossary
Fire Door Assembly: Building Code Definition
How the IBC 2009, IFC 2009 define fire door assembly, where the wording differs, and which chapters depend on the term.
On this page
Last updated September 7, 2026 · Definitions quoted from the 2009 International Codes as transcribed in this site's building-codes collection, with the source chapter linked for each quotation. Usage counts are computed over the chapters hosted here, one copy per code. The [ICC code library](https://codes.iccsafe.org/codes) publishes the current model text and the [ICC adoption maps](https://www.iccsafe.org/advocacy/code-adoption-maps/) show which edition a jurisdiction has adopted; those sources control.
Direct answer
Fire door assembly is a defined term in the International Building Code (IBC) 2009, in Fire and Smoke Protection Features. The code's own words are: “Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening.” The IFC 2009 carries the same definition word for word, so the term means the same thing in each. The term is used in 7 chapters of this corpus, most often in Elevators and Conveying Systems (IBC 2009), Fire and Smoke Protection Features (IBC 2009), Fire Protection Systems (IBC 2009). These pages transcribe the 2009 model text; verify the definition against the edition and amendments your authority having jurisdiction has adopted. Record the jurisdiction, the adopted edition, the application date and any local amendment that rewrites the definition before you use it on a live project, because a term redefined by amendment changes every requirement that depends on it.
Content and cited inputs reviewed by Scott Barrington, Harth founder and architectural technology specialist · Published 2026-09-07 · Updated 2026-09-07.
What does this term mean?
Fire Door Assembly — IBC 2009, Fire and Smoke Protection Features:
Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening.
What must be verified before using this guidance?
Two of the I-Codes in this corpus define Fire Door Assembly, in identical words.
| Code | Where it is defined | Definition |
|---|---|---|
| IBC 2009 | Fire and Smoke Protection Features | Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening. |
| IFC 2009 | Definitions | Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening. |
Where fire door assembly is used in the code
The term appears in 7 chapters of the 2009 I-Codes hosted here. The chapters that lean on it hardest are the ones to read next.
| Chapter | Code | Mentions |
|---|---|---|
| Elevators and Conveying Systems | IBC 2009 | 12 |
| Fire and Smoke Protection Features | IBC 2009 | 9 |
| Fire Protection Systems | IBC 2009 | 9 |
| Means of Egress | IBC 2009 | 6 |
| Means of Egress | IFC 2009 | 6 |
| Definitions | IBC 2009 | 2 |
| Definitions | IFC 2009 | 2 |
The term in use
How the code actually writes about fire door assembly, quoted from the 2009 text hosted here:
Each fire service access elevator lobby shall be provided with a doorway that is protected with a 3/4-hour fire door assembly complying with Section 715.4.
In a 20-minute fire door assembly, the glazing material in the door itself shall have a minimum fire-protection-rated glazing of 20 minutes and shall be exempt from the hose stream test.
Where access to the stairway is by way of an open exterior balcony, the door assembly into the enclosure shall be a fire door assembly in accordance with Section 715.4.
Fire Door Assembly: what to open, and in what order
Every row is a document this term depends on. The ICC code library and the ICC adoption maps cover the middle rows.
| Check | Where | Confirmed |
|---|---|---|
| Read the definition in the adopted IBC | Fire and Smoke Protection Features | |
| Read the definition in the adopted IFC | Definitions | |
| Re-check the requirement that uses it | Elevators and Conveying Systems (IBC 2009) | |
| Re-check the requirement that uses it | Fire and Smoke Protection Features (IBC 2009) | |
| Re-check the requirement that uses it | Fire Protection Systems (IBC 2009) | |
| Re-check the requirement that uses it | Means of Egress (IBC 2009) | |
| Local amendment to any of the above | Jurisdiction's amendment list |
A research aid, not a code determination. The authority having jurisdiction decides which edition and which amendments apply.
Where can you explore related guidance?
- Explore all glossary guidance
- Shaft: Building Code Definition
- Damper: Building Code Definition
- Fire-resistance Rating: Building Code Definition
- Fire Barrier: Building Code Definition
Sources and method
Definitions quoted from the 2009 International Codes as transcribed in this site's building-codes collection, with the source chapter linked for each quotation. Usage counts are computed over the chapters hosted here, one copy per code. The ICC code library publishes the current model text and the ICC adoption maps show which edition a jurisdiction has adopted; those sources control.
Source links
Frequently asked questions
What is the code definition of fire door assembly?
The International Building Code (IBC) 2009 defines it in Fire and Smoke Protection Features as: “Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening.” The 2009 model text is reproduced here; the definition that binds your project is the one in the edition your jurisdiction has adopted, as amended locally.
Which parts of the code depend on fire door assembly?
In this corpus the term is used across 7 chapters, led by Elevators and Conveying Systems in the IBC 2009. Those are the sections whose scope moves if the definition is amended locally, so read them together with Chapter 2 rather than on their own.
What is the definition of a fire door assembly?
In the 2009 I-Codes hosted here it is a defined term rather than a description. The IBC 2009 states, in Fire and Smoke Protection Features: “Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening.” It is defined in IBC 2009, IFC 2009. Because it is a defined term, whatever the adopted edition says it means is what every section using it means — so check Chapter 2 of that edition and any local amendment before relying on this wording.
What are the requirements for fire doors in the International Building Code (IBC)?
Building is a separate defined term. The IBC 2009 defines it as: “Any structure used or intended for supporting or sheltering any use or occupancy.” That is not the same as fire door assembly, which the IBC 2009 defines as “Any combination of a fire door, frame, hardware and other accessories that together provide a specific degree of fire protection to the opening.” — read both before applying either, and confirm the wording in the edition your jurisdiction has adopted.
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