Building Code Glossary
Fabrication Area: Building Code Definition
How the IBC 2009, IFC 2009 define fabrication area, 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
Fabrication area is a defined term in the International Building Code (IBC) 2009, in Special Detailed Requirements Based on Use and Occupancy. The code's own words are: “An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are directly related to the fabrication area processes.” The IFC 2009 carries the same definition word for word, so the term means the same thing in each. The term is used in 8 chapters of this corpus, most often in Special Detailed Requirements Based on Use and Occupancy (IBC 2009), Semiconductor Fabrication Facilities (IFC 2009), Duct Systems (IMC 2009). These pages transcribe the 2009 model text; verify the definition against the edition and amendments your authority having jurisdiction has adopted.
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?
Fabrication Area — IBC 2009, Special Detailed Requirements Based on Use and Occupancy:
An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are directly related to the fabrication area processes.
What must be verified before using this guidance?
Two of the I-Codes in this corpus define Fabrication Area, in identical words.
| Code | Where it is defined | Definition |
|---|---|---|
| IBC 2009 | Special Detailed Requirements Based on Use and Occupancy | An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are directly related to the fabrication area processes. |
| IFC 2009 | Semiconductor Fabrication Facilities | An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are directly related to the fabrication area processes. |
Where fabrication area is used in the code
The term appears in 8 chapters of the 2009 I-Codes hosted here. The chapters that lean on it hardest are the ones to read next.
| Chapter | Code | Mentions |
|---|---|---|
| Special Detailed Requirements Based on Use and Occupancy | IBC 2009 | 98 |
| Semiconductor Fabrication Facilities | IFC 2009 | 81 |
| Duct Systems | IMC 2009 | 12 |
| Exhaust Systems | IMC 2009 | 4 |
| Definitions | IBC 2009 | 1 |
| Fire Protection Systems | IBC 2009 | 1 |
| Definitions | IFC 2009 | 1 |
| Special Piping and Storage Systems | IPC 2009 | 1 |
The term in use
How the code actually writes about fabrication area, quoted from the 2009 text hosted here:
The emergency control station shall be located on the premises at an approved location outside the fabrication area.
Group H, Division 5 fabrication areas and the areas above and below the fabrication area that share a common air recirculation path with the fabrication area shall not be subject to the provisions of Section 602.2.1.
The terms fabrication area is built out of
The definition above leans on 2 other defined terms. Each carries its own code definition, and a local amendment to any of them changes what fabrication area covers:
- Semiconductor Fabrication Facility — IFC 2009: A building or a portion of a building in which electrical circuits or devices are created on solid crystalline substances having electrical conductivity greater than insulators but less than conductors.
- Facility — IBC 2009: All or any portion of buildings, structures, site improvements, elements and pedestrian or vehicular routes located on a site.
Fabrication Area: 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 | Special Detailed Requirements Based on Use and Occupancy | |
| Read the definition in the adopted IFC | Semiconductor Fabrication Facilities | |
| Re-check the requirement that uses it | Special Detailed Requirements Based on Use and Occupancy (IBC 2009) | |
| Re-check the requirement that uses it | Semiconductor Fabrication Facilities (IFC 2009) | |
| Re-check the requirement that uses it | Duct Systems (IMC 2009) | |
| Re-check the requirement that uses it | Exhaust Systems (IMC 2009) | |
| Confirm the dependent definition | Semiconductor Fabrication Facility | |
| Confirm the dependent definition | Facility | |
| 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
- Semiconductor Fabrication Facility: Building Code Definition
- Facility: 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 fabrication area?
The International Building Code (IBC) 2009 defines it in Special Detailed Requirements Based on Use and Occupancy as: “An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are directly related to the fabrication area processes.” 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 fabrication area?
In this corpus the term is used across 8 chapters, led by Special Detailed Requirements Based on Use and Occupancy 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 building area according to the 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 fabrication area, which the IBC 2009 defines as “An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are …” — read both before applying either, and confirm the wording in the edition your jurisdiction has adopted.
What is the IS code for steel fabrication?
Steel is a separate defined term. The IFC 2009 defines it as: “Hot-or cold-rolled as defined by the International Building Code.” That is not the same as fabrication area, which the IBC 2009 defines as “An area within a semiconductor fabrication facility and related research and development areas in which there are processes using hazardous production materials. Such areas are allowed to include ancillary rooms or areas such as dressing rooms and offices that are …” — read both before applying either, and confirm the wording in the edition your jurisdiction has adopted.
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