# False Alarm: Building Code Definition > How the IFC 2009 define false alarm, where the wording differs, and which chapters depend on the term. - Canonical: https://harth.build/resources/glossary/false-alarm/ - Last updated: 2026-09-07 - Data source: 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. ## Key facts | Fact | Value | | --- | --- | | Defined in | IFC 2009 (2009 editions transcribed in this corpus) | | Primary source | IFC 2009 Definitions (model text, not a jurisdiction's adopted text) | | Chapters using the term | 4 (counted across the codes hosted here) | | Wording identical across codes | Single code (compare before citing one code's wording under another) | ## Direct answer False alarm is a defined term in the International Fire Code (IFC) 2009, in Definitions. The code's own words are: “The willful and knowing initiation or transmission of a signal, message or other notification of an event of fire when no such danger exists.” No other I-Code in this corpus defines it, so the IFC 2009 definition is the one to work from. The term is used in 4 chapters of this corpus, most often in Fire Protection Systems (IBC 2009), Fire Protection Systems (IFC 2009), Definitions (IFC 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](https://nz.linkedin.com/in/barrington), Harth founder and architectural technology specialist · Published 2026-09-07 · Updated 2026-09-07.* ## What does this term mean? **False Alarm** — IFC 2009, Definitions: > The willful and knowing initiation or transmission of a signal, message or other notification of an event of fire when no such danger exists. ![Labeled code-term definition diagram: False Alarm: Building Code Definition](https://efwwel0vyt9vy5so.public.blob.vercel-storage.com/images/glossary/false-alarm/diagram-1344.webp) *How the IFC 2009 define false alarm, where the wording differs, and which chapters depend on the term.* ## What must be verified before using this guidance? **False Alarm** is defined once in this corpus, in the [Definitions](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/definitions.md) chapter of the International Fire Code (IFC) 2009: > The willful and knowing initiation or transmission of a signal, message or other notification of an event of fire when no such danger exists. ## Where false alarm is used in the code The term appears in 4 chapters of the 2009 I-Codes hosted here. The chapters that lean on it hardest are the ones to read next. | Chapter | Code | Mentions | | --- | --- | --- | | [Fire Protection Systems](https://harth.build/resources/building-codes/us-states/maryland/ibc-2009/fire-protection-systems.md) | IBC 2009 | 3 | | [Fire Protection Systems](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/fire-protection-systems.md) | IFC 2009 | 3 | | [Definitions](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/definitions.md) | IFC 2009 | 1 | | [Emergency Planning and Preparedness](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/emergency-planning-and-preparedness.md) | IFC 2009 | 1 | ### The term in use How the code actually writes about false alarm, quoted from the 2009 text hosted here: > A person shall not give, signal or transmit a false alarm. — [IFC 2009 §401.5](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/emergency-planning-and-preparedness.md) ## False Alarm: what to open, and in what order Every row is a document this term depends on. The [ICC code library](https://codes.iccsafe.org/codes) and the [ICC adoption maps](https://www.iccsafe.org/advocacy/code-adoption-maps/) cover the middle rows. | Check | Where | Confirmed | | --- | --- | --- | | Read the definition in the adopted IFC | Definitions | | | Re-check the requirement that uses it | Fire Protection Systems (IBC 2009) | | | Re-check the requirement that uses it | Fire Protection Systems (IFC 2009) | | | Re-check the requirement that uses it | Definitions (IFC 2009) | | | Re-check the requirement that uses it | Emergency Planning and Preparedness (IFC 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](https://harth.build/resources/glossary.md) - [Building: Building Code Definition](https://harth.build/resources/glossary/building.md) - [Construction Documents: Building Code Definition](https://harth.build/resources/glossary/construction-documents.md) - [Registered Design Professional: Building Code Definition](https://harth.build/resources/glossary/registered-design-professional.md) - [Dwelling Unit: Building Code Definition](https://harth.build/resources/glossary/dwelling-unit.md) ## 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](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. ### Source links - [codes.iccsafe.org](https://codes.iccsafe.org/codes) - [iccsafe.org](https://www.iccsafe.org/advocacy/code-adoption-maps/) ## Frequently asked questions ### What is the code definition of false alarm? The International Fire Code (IFC) 2009 defines it in Definitions as: “The willful and knowing initiation or transmission of a signal, message or other notification of an event of fire when no such danger exists.” 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. ### What is considered a false alarm? In the 2009 I-Codes hosted here it is a defined term rather than a description. The IFC 2009 states, in Definitions: “The willful and knowing initiation or transmission of a signal, message or other notification of an event of fire when no such danger exists.” It is defined in 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. --- - Continue in Harth (open this topic in the Harth agent): https://app.harth.build/agent?context=%2Fresources%2Fglossary%2Ffalse-alarm%2F - View this page in a browser: https://harth.build/resources/glossary/false-alarm/ - All resources for agents: https://harth.build/llms.txt