IMPORTANT DISCLAIMER: This guide references NFPA 101, Chapter 43 (Building Rehabilitation) and NFPA 914, Code for the Protection of Historic Structures, where applicable to existing building retrofits. However, NFPA 101 and NFPA 914 requirements vary significantly by edition (2018, 2021, 2023) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control. This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ.

Fire safety is at an inflection point. The systems, materials, and hazards that defined the profession for decades are being reshaped by forces that didn’t exist—or weren’t mainstream—twenty years ago. Lithium-ion batteries power everything from phones to vehicles to entire buildings. Artificial intelligence can detect fires from video feeds without ever being “trained” on fire footage. Buildings are becoming sensor-rich environments that generate data faster than traditional codes can respond to.

This article surveys the trends and technologies that will define fire safety over the coming decade. It is not a prediction piece. Every technology described here is either deployed, in pilot, or under active research—and each is anchored to real standards activity, published research, or documented deployments. Where something remains speculative, we say so.

The goal is not to tell you what the future will be, but to help you recognize the direction of travel—and prepare for it.

◆ Section 1: Why Fire Safety Is at an Inflection Point

Three converging forces are driving change:

The fire protection industry has historically moved slowly, and for good reason: life safety systems must be reliable, and reliability comes from tested, proven technology. But the pace of change in building materials, energy systems, and digital infrastructure is outpacing the code development cycle. The gap between what’s possible and what’s codified is widening.

The SFPE Foundation’s 2025 research on fire testing of resilient and sustainable materials captures this tension directly: current fire tests are often inadequate for evaluating novel materials, and bridging that gap requires new test methods and increased reliance on performance-based design .

Pro Tip: The most successful fire safety professionals in the coming decade will be those who can navigate the space between prescriptive code compliance and performance-based innovation—and who can document their reasoning for the AHJ.

◆ Section 2: AI and Machine Learning in Detection and Risk Prediction

Artificial intelligence is moving from novelty to utility in fire detection. The most significant development is zero-shot fire detection—systems that can identify fire in video feeds without being trained on labeled fire data.

A 2025 paper in Neurocomputing introduced a framework that leverages large language models and contrastive learning to detect fires without any training, outperforming established methods like ResNet, ViT, and YOLOv8 in detecting small fires in complex environments . The system uses enhanced self-attention mechanisms and dynamic threshold calculations to improve robustness across diverse scenarios.

This matters because traditional fire detection AI requires extensive labeled datasets—images of fire and non-fire—which are expensive to curate and may not generalize to new environments. Zero-shot approaches reduce that barrier.

The Security Sales & Integration industry survey notes that intelligent, connected systems can deploy “hundreds of thousands of sensors” and shift fire safety “from its react-and-respond stance toward a more proactive, predict-and-prevent approach” . One integrator reports a 30% reduction in service calls from connected systems that diagnose issues before they require emergency attention .

Pro Tip: AI in fire detection is most valuable when it augments human decision-making, not replaces it. The SFPE Foundation’s research on digital buildings and fire service operations found that incident commanders want clear, actionable information—not raw data or predictive models that lack practical grounding .

◆ Section 3: IoT and Smart Building Integration

The Internet of Things is transforming fire alarm systems from isolated panels into networked, data-generating platforms.

The industry is moving away from POTS (plain old telephone service) lines toward IP- and cellular-based communicators integrated with cloud platforms and mobile apps. This enables remote diagnostics, real-time alerts, and new recurring revenue models for service providers . Multi-carrier cellular communicators provide redundancy—if one carrier fails, the communicator switches to another to ensure life-safety signals are delivered .

The UAE Fire & Life Safety Code of Practice explicitly addresses Smart Monitoring Systems in Chapter 16, recognizing that continuous monitoring and data-driven maintenance are part of the compliance lifecycle . This regulatory recognition of IoT-enabled fire safety is a significant shift—it signals that authorities are beginning to treat connected systems as a legitimate compliance pathway, not just a convenience.

Pro Tip: Connected systems generate valuable data, but they also introduce cybersecurity risk. NFPA 72 (2025) dramatically expanded its cybersecurity requirements, introducing security levels for network-connectable equipment. Systems connected to publicly accessible networks require the highest level of protection .

◆ Section 4: Digital Twins and BIM for Fire Safety

Digital twins—virtual replicas of physical buildings that sync with real-time data—are moving from concept to practical application in fire safety.

The interface between digital buildings and fire service operations is an active research area. A 2026 SFPE Foundation study interviewed 47 incident commanders across three countries to understand how different types of information affect decision-making. The findings: real-time and well-presented static data enable quicker, more targeted fire service responses, and early access to such information—especially at dispatch—is critical .

However, the study also identified a gap: advanced predictive tools don’t always meet the practical needs of incident commanders . The lesson is that technology must translate complex data into clear, actionable information—not just generate more data.

For existing buildings, digital twins face a data problem: most buildings lack the sensor infrastructure and accurate as-built documentation to support them. Retrofitting IoT sensors into legacy buildings is possible but requires investment that many owners haven’t yet made.

Pro Tip: Start with BIM if you’re designing new construction—the data captured during design can become the foundation for a digital twin during operations. For existing buildings, focus first on digitizing fire system documentation and integrating with building management systems.

◆ Section 5: Robotics, Drones, and Autonomous Response

Robotics in fire safety remains largely in the research and pilot stage, but the trajectory is clear.

The most mature applications are inspection and monitoring rather than suppression:

For most commercial buildings, the near-term value of robotics is in reducing inspection costs and improving coverage. Drones can access roofs and high spaces faster than human inspectors. Robotic systems can test detectors on a schedule without manual intervention.

Fully autonomous firefighting robots remain confined to high-risk industrial settings—refineries, chemical plants, and similar environments where human access is dangerous. The complexity of navigating occupied buildings, identifying victims, and making suppression decisions in real time remains a significant barrier.

Pro Tip: The most practical near-term robotics investment for building owners is automated inspection technology. It reduces labor costs, improves documentation, and addresses the skilled-labor shortage that the industry consistently identifies as a top challenge .

◆ Section 6: New Hazard Classes — Lithium-Ion, Hydrogen, Energy Storage

The most significant fire safety challenge of the coming decade is energy storage.

Lithium-ion batteries are now ubiquitous—in vehicles, buildings, data centers, and grid-scale installations. Their fire behavior is fundamentally different from traditional combustibles. Thermal runaway can exceed 1,000°C, resists conventional suppression, and can reignite hours or days after apparent extinguishment.

The SFPE Foundation’s 2025 research on outdoor lithium-ion battery energy storage systems (BESS) developed a methodology to assess health and environmental impacts from thermal runaway events, establishing relationships between exposure distance and variables including wind speed, ambient temperature, event duration, cell chemistry, and toxic gas species .

NFPA 855, Standard for the Installation of Stationary Energy Storage Systems, has been significantly revised for the 2026 edition. Key changes include consolidation of general requirements into Chapter 4, addition of new battery types, new requirements for emergency response plans, EV charging systems with energy storage, flow batteries (Chapter 16), and ESS on barges (Chapter 17) .

Pro Tip: Lithium-ion fire safety is not just a suppression problem—it’s a separation, detection, and emergency response problem. The NIRS data center fire in South Korea (Article 98) demonstrated that battery fires during maintenance can destroy critical infrastructure even when the IT halls themselves are protected.

◆ Section 7: Performance-Based Design and Fire Modeling

Performance-based design (PBD) is not new, but its importance is growing as prescriptive codes struggle to keep pace with novel materials and building types.

The 2025 research on fire testing of sustainable materials concludes that bridging the safety gap for novel materials requires increased reliance on performance-based design . The same conclusion applies to mass timber, double-skin façades, and other green building strategies where prescriptive requirements either don’t exist or would eliminate design flexibility.

For tall timber buildings, researchers note that multi-hazard PBD principles beyond current design guidelines are needed—considering not just fire, but seismic, wind, and other loads in an integrated framework .

The challenge with PBD is review capacity. Many AHJs lack the in-house expertise to evaluate complex fire models and alternative compliance arguments. This creates uncertainty for designers and can extend approval timelines.

Pro Tip: If you’re pursuing performance-based design, engage the AHJ early and document your methodology thoroughly. The most common failure mode for PBD submittals is not technical inadequacy—it’s insufficient communication with the authority who must approve it.

◆ Section 8: Regulatory and Standards Evolution

Codes and standards are evolving to address new hazards, new technologies, and new expectations.

NFPA 101 (2024) key changes include: new automatic sprinkler requirements for all new parking structures, additional carbon monoxide detection requirements, updated emergency action plan requirements addressing security features, new requirements for inflatable amusement devices and modular rooms, and guidance for alternate care sites .

NFPA 72 (2025) key changes include: a new “restricted audible mode operation” (RAMO) scheme allowing lower sound pressure levels in noise-sensitive environments (with risk analysis and AHJ approval), dramatically expanded cybersecurity requirements with defined security levels, and clarification that magnets cannot be used for smoke detector functional testing .

NFPA 855 (2026) consolidates general ESS requirements, adds battery types and emergency response planning requirements, and introduces chapters for flow batteries and ESS on barges .

Pro Tip: The regulatory landscape is fragmenting—different standards are evolving at different paces, and the coverage of lithium-ion batteries has shifted from NFPA 76 to NFPA 855. Ensure your design team is tracking which standard governs which hazard.

◆ Section 9: Workforce and Training Transformation

The fire protection industry faces a persistent and worsening talent gap. Industry surveys consistently identify skilled labor availability as a top challenge—particularly in engineering, inspection, and technical service roles .

Technology is both a cause and a potential solution. As systems become more complex, the training required to service them correctly increases. But connected systems also enable remote diagnostics, condition-based maintenance, and automated testing—reducing the need for on-site labor for routine tasks .

One integrator reports that connected systems enable one-man inspections—eliminating the need for one person to man the panel while another walks the floor—cutting inspection labor costs roughly in half .

Pro Tip: The workforce challenge is not just about hiring—it’s about retaining institutional knowledge. As experienced professionals retire, their expertise in navigating code interpretations, AHJ relationships, and practical problem-solving leaves with them. Documented procedures and digital knowledge bases are not optional.

◆ Section 10: What Won’t Change

Amid all the change, some fundamentals remain:

1. Reliability matters more than sophistication. A simpler system that works is better than a complex system that fails. This is why fire alarm systems have 20–30 year lifespans and why the industry is cautious about rapid adoption.

2. The AHJ controls. No amount of technology changes the fact that the Authority Having Jurisdiction determines compliance. Engage early, document thoroughly, and respect the process.

3. Human behavior is unpredictable. Evacuation modeling, training, and drills still matter. Technology can guide people, but it cannot replace their judgment or overcome poor planning.

4. Maintenance is the foundation. The NIRS data center fire (Article 98) was caused by maintenance failures, not technology failures. No system is better than the people who maintain it.

5. Fire safety is a system, not a product. Detection, suppression, compartmentation, egress, and management work together. Optimizing one component while neglecting others creates vulnerability.

Pro Tip: When evaluating new technology, ask: Does this make the system more reliable, or just more impressive? The best fire safety technology is the technology that works when everything else fails.

◆ Section 11: Readiness Assessment for Your Organization

◆ Section 12: Conclusion

The future of fire safety is not a single technology or trend. It is the convergence of new hazards, new capabilities, and new expectations—playing out across an industry that must balance innovation with the absolute requirement for reliability.

Key Takeaways:

1. AI is becoming practical for detection and risk assessment, with zero-shot approaches reducing the data barrier .

2. IoT and connectivity are transforming fire alarms from isolated panels to networked, data-rich systems .

3. Lithium-ion batteries are the defining hazard of the coming decade, requiring dedicated standards (NFPA 855) and new emergency response approaches .

4. Digital twins and BIM offer value for design and operations, but practical adoption lags the technology .

5. Performance-based design is increasingly necessary as prescriptive codes struggle with novel materials .

6. The workforce gap is real and technology is both a contributor and a partial solution .

7. Fundamentals don’t change—reliability, maintenance, human behavior, and AHJ authority remain central.

Take Action Today:

1. Assess your facility’s exposure to lithium-ion and energy storage hazards.

2. Evaluate whether your fire alarm system is due for connectivity upgrade—and plan cybersecurity accordingly.

3. Review your fire system documentation for digital readiness.

4. Identify the standards and editions that govern your facility.

5. Engage your AHJ before pursuing any technology-driven changes.

6. Invest in workforce training and knowledge documentation.

7. Ask whether any new technology makes your system more reliable—not just more impressive.

Continue Reading from Our Series:

• Learn more: Fire Safety for Data Centers and IT Facilities

• Related guide: Fire Safety for Green Buildings: Balancing Sustainability and Safety

• Read more: How to Integrate Fire Safety with Building Information Modeling (BIM)

IMPORTANT DISCLAIMER: This guide references NFPA 75, Standard for the Fire Protection of Information Technology Equipment, and NFPA 76, Standard for the Fire Protection of Telecommunications Facilities. Where existing building rehabilitation is involved, NFPA 101, Chapter 43 (Building Rehabilitation) and NFPA 914, Code for the Protection of Historic Structures, may apply. However, NFPA 101 and NFPA 914 requirements vary significantly by edition (2018, 2021, 2023) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control. This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ.

Data centers present one of the most complex fire safety challenges in modern commercial construction. The assets they protect—servers, storage, network equipment—are extraordinarily valuable, and the services they enable are often critical to business operations, public safety, and daily life. A fire that damages a data center doesn’t just destroy equipment; it can paralyze organizations, disrupt essential services, and cost millions in downtime.

Yet the fire safety strategy for a data center cannot simply mirror that of an office building or warehouse. Water-based suppression that works well in a warehouse can destroy the very equipment it’s meant to protect. And the unique fire risks inside a data center—from lithium-ion batteries to high-density AI compute loads—require specialized approaches.

This guide covers the fire safety requirements and best practices for data centers, based on NFPA 75 and NFPA 76, along with real-world lessons from data center fires.

◆ Section 1: Why Data Centers Are Different

Data centers are not simply rooms full of computers. They are specialized facilities with unique fire risk profiles and operational requirements.

The focus in data center fire protection has shifted from mere code compliance to business continuity—operators and investors now weigh how quickly systems can be restored after an incident and what level of collateral damage a site can accept.

Pro Tip: Fire protection now appears much earlier in the design process for data centers, taking place alongside electrical and mechanical engineering, zoning and compartmentation planning, and cooling strategy decisions. Treating it as a late-stage add-on creates expensive retrofits and compromises.

◆ Section 2: The Regulatory Framework

A. NFPA 75 — Information Technology Equipment

NFPA 75, Standard for the Fire Protection of Information Technology Equipment (2024 edition), sets forth minimum requirements for the protection of ITE equipment and ITE areas from damage by fire or its associated effects—smoke, corrosion, heat, and water.

Key chapters cover:

• Fire protection approaches and fire risk assessment (Chapter 4)
• Performance-based design (Chapter 5)
• Construction requirements (Chapter 6)
• Fire protection and detection equipment (Chapter 9)
• Utilities including HVAC, coolant systems, and UPS (Chapter 11)
• Emergency and recovery procedures (Chapter 12)
• Modular data centers (Chapter 13)

B. NFPA 76 — Telecommunications Facilities

NFPA 76 addresses fire protection for telecommunications facilities, including landline, cable, wireless, and satellite services. The 2024 edition removed lithium-ion battery requirements in favor of coverage in NFPA 855, added off-gas detection requirements, and revised cable management requirements.

C. Related Standards

Pro Tip: The 2024 editions of NFPA 75 and NFPA 76 are the current benchmarks. Ensure your design team is working from the most recent editions, as significant changes—particularly around lithium-ion batteries—have been made.

◆ Section 3: Fire Risk Profile — What Actually Burns

Understanding what burns in a data center is essential to designing effective protection.

The South Korea NIRS data center fire in September 2025 began with a lithium-ion battery explosion during routine UPS battery relocation. The fire required 170 firefighters and 63 fire trucks, took 22 hours to extinguish, destroyed 384 lithium-ion batteries and 96 critical IT systems, and disrupted 709 government systems .

Key lesson: Lithium-ion battery fires in data centers are not hypothetical. The NIRS incident followed a 2022 SK C&C data center fire that disrupted KakaoTalk, and South Korea recorded 55 UPS-related fires between 2018 and 2022.

◆ Section 4: Detection — Very Early Warning

In data centers, detecting a fire at the incipient stage is critical. By the time a traditional point detector activates, smoke may already be damaging equipment.

A. Aspirating Smoke Detection (ASD)

Aspirating smoke detection systems continuously draw air samples from protected areas through a network of pipes to a central detector. They are purpose-designed for applications where very early warning and system stability are critical, including data centers.

Modern ASD systems incorporate blue light technology to improve sensitivity to the very small smoke particles typically associated with incipient fires, providing faster response while maintaining stability in normal operating conditions.

B. Off-Gas Detection

NFPA 76 (2024) added requirements for off-gas detection. This technology detects the gases released by overheating batteries before thermal runaway occurs.

C. Detection Zoning

Pro Tip: Early detection is not just about alarm activation—it’s about initiating suppression before a fire reaches the flame stage. Clean agents act fastest when the fire is still in its incipient phase.

◆ Section 5: Suppression — Clean Agents and Alternatives

A. Clean Agent Systems

Clean agents are the preferred suppression for data halls because they are electrically non-conductive, leave no residue, and do not require equipment shutdown before discharge.

Clean agents extinguish fires primarily by absorbing heat rather than removing oxygen, allowing them to act fast—discharge within 10 seconds and fire extinguished within 30 seconds, generally before reaching the flame stage.

Agent Concentration and Safety: Any agent used under NFPA 2001 must be evaluated per EPA SNAP requirements. Manufacturer manuals contain LOAEL (Lowest Observable Adverse Effect Level) and NOAEL (No Observed Adverse Effect Level) data. Safeguards must include personnel training, warning signs, discharge alarms, SCBA, evacuation plans, and fire drills.

B. Water Mist Systems

NFPA 75 (2024) includes provisions for water mist fire protection systems. Water mist uses significantly less water than traditional sprinklers and may be suitable for certain data center areas. However, the impact on equipment must be carefully evaluated.

C. Water-Based Suppression

Traditional sprinklers are generally not the first choice for data halls due to water damage risk. Discharging water in an enclosed space can increase humidity beyond safe levels, leading to hard disk drive performance problems or failure. ASHRAE guidelines indicate equipment should be powered down when humidity exceeds 80%.

However, water-based suppression may still be required or appropriate for:

• Building areas outside the ITE space
• Generator halls and power rooms
• Storage areas
• As a backup to clean agent systems

Pro Tip: Standards compliance for suppression systems must be on three levels: component, system, and installation. Use only systems with system approval/certification, or insurance may be invalidated and the system may not work as intended.

◆ Section 6: Lithium-Ion Battery Fire Safety

Lithium-ion batteries in UPS systems represent the most significant emerging fire risk in data centers.

Regulatory Note: NFPA 76 (2024) removed lithium-ion battery requirements in favor of coverage in NFPA 855, Standard for the Installation of Stationary Energy Storage Systems. Ensure your design team is familiar with NFPA 855 requirements for UPS battery installations.

Pro Tip: The NIRS fire occurred during routine maintenance—battery relocation intended to reduce fire risk. This underscores that battery handling procedures are as important as system design. Develop and enforce strict protocols for battery disconnection, relocation, and disposal.

◆ Section 7: Compartmentation and Construction

A. ITE Area Location

NFPA 75 addresses the location of ITE areas within buildings, interior construction materials, raised floors, and penetrations in fire-resistant-rated enclosures.

B. Modern Design Challenges

Modern data centers operate as collections of specialist rooms and zones rather than a single uniform hall. Data halls, UPS and battery rooms, medium- and low-voltage electrical rooms, generator halls, cooling plants, and storage areas each have distinct hazards and operational constraints. This segmentation increases pressure for site-specific fire protection approaches.

Pro Tip: The era of applying a single fire protection standard across an entire data center site is over. Each zone requires protection aligned with its function, hazard profile, and recovery objectives.

◆ Section 8: Operational Continuity vs. Code Compliance

The data center industry has shifted its focus from compliance as a primary driver to business continuity. Fire protection decisions are now evaluated based on their impact on uptime and recovery, not suppression performance alone.

The Almere data center fire in May 2026 demonstrated that redundancy at the data center level does not automatically mean end users are protected. The fire broke out in a utility room housing emergency power, cooling systems, and diesel backup generators. NorthC shut off power to the data halls on the fire brigade’s instructions to enable safe firefighting. The outage cascaded to every organization with platforms hosted at the site—including Transdev, whose control-center servers for the regional public transport emergency communication system had never been migrated to a backup location. Drivers lost contact with the control room, and the in-vehicle emergency button stopped functioning.

The Infrastructure That Failed — Not the IT Halls

The Almere facility spans 26,000 m² with an 11 MW electrical connection. Yet the fire did not start in the data halls. It broke out in a utility room housing the emergency power supply, cooling systems, and diesel backup generators. That separation succeeded: the servers survived. But the power, cooling, and emergency systems that made them operational were destroyed or shut down.

This is the zone-by-zone reality of modern data center design. The IT halls may be protected, but the facility is only as resilient as its weakest supporting system. When the utility infrastructure fails, the IT halls become expensive storage rooms.

Key lesson: Digital continuity begins not only with IT, but with the building itself. Investing in building automation and integrated fire safety is a prerequisite for keeping vital functions safe.

◆ Section 9: Case Study — South Korea NIRS Data Center Fire

The September 2025 fire at South Korea’s National Information Resources Service (NIRS) data center is the most instructive data center fire incident in recent years.

Timeline and Impact:

Root Causes:

1. Single point of failure: Over one-third of government systems were concentrated at the Daejeon headquarters. The NIRS had three sites but lacked active-active redundancy for real-time failover.
2. Battery proximity: Batteries were positioned just 60 cm from major servers, with inadequate partitioning between the power room and server room .
3. Battery age: The LG Energy Solution batteries were installed in August 2014, exceeding their 10-year recommended lifespan by over a year .
4. Maintenance procedure: Police investigation found that while the main power was shut down, the auxiliary power system connected to the UPS battery backup was not isolated. Workers failed to follow safety protocols, did not use required insulation materials, and failed to properly discharge the batteries before moving them . The batteries were at approximately 80% charge; guidelines require below 30% for safe relocation . Additionally, the workers involved were not qualified for the job, had no experience in battery relocation, and the contractors did not involve the battery manufacturers. The project involved illegal subcontracting with falsified employee records .

Data Loss and Human Cost

Beyond the operational disruption, the NIRS fire resulted in the permanent loss of approximately 858 TB of government data stored on G-Drive, a shared cloud storage service for central government officials . Unlike the other 95 destroyed systems, G-Drive had no backup—officials cited its massive capacity as the reason backups were deemed impractical . One official described the loss as “eight years’ worth of work materials” that had “completely disappeared” .

The human toll extended beyond data. On October 3, 2025, a 56-year-old Interior Ministry official who led the recovery effort was found dead at the government complex in Sejong . Police stated he appeared to have jumped from a 15th-floor terrace smoking area, leaving his phone behind . The Ministry of the Interior and Safety expressed condolences and canceled a scheduled briefing . The official was not a subject of the criminal investigation into the fire .

Lessons:

• Lithium-ion UPS batteries require separation from IT equipment and strict maintenance protocols
• Active-active redundancy, not just backup sites, is essential for critical infrastructure
• Battery replacement timelines must be enforced
• Firefighting challenges with lithium-ion fires require pre-incident planning
• Business continuity must include data survivability, not just uptime
• Maintenance procedures must be verified—not assumed—before work begins
• Contractor qualifications and oversight are fire safety controls

◆ Section 10: Design Checklist for Data Center Fire Safety

◆ Section 11: Common Mistakes and How to Avoid Them

◆ Section 12: Conclusion

Data center fire protection is not a commodity—it is a specialized discipline that requires understanding of unique hazards, specialized suppression technologies, and the operational realities of continuous uptime environments.

Key Takeaways:

1. NFPA 75 and NFPA 76 are the governing standards for ITE and telecommunications facilities, with significant updates in the 2024 editions.
2. Clean agents are preferred for data halls because they are non-conductive, leave no residue, and act before the flame stage.
3. Aspirating smoke detection provides very early warning essential for protecting sensitive electronics.
4. Lithium-ion batteries are the most significant emerging risk and require NFPA 855 compliance, separation from ITE, and strict maintenance protocols.
5. Business continuity, not just code compliance, drives modern design—fire protection must be evaluated based on uptime and recovery impact.
6. Data resilience is a fire safety concern—the NIRS fire proved that systems without verified backups can lose data permanently.
7. Human error and contractor oversight are fire risk factors—the NIRS fire was ruled a man-made disaster caused by incomplete power isolation, unqualified workers, and illegal subcontracting .

Take Action Today:

1. Verify your facility complies with NFPA 75 (2024) and NFPA 76 (2024).
2. Assess lithium-ion battery installations against NFPA 855 requirements.
3. Evaluate aspirating smoke detection coverage in all ITE areas.
4. Confirm clean agent systems have system-level approval, not just component certification.
5. Develop and enforce battery handling and maintenance procedures.
6. Coordinate with your fire service for pre-incident planning.
7. Verify backup systems actually work—and test recovery.
8. Document business continuity objectives and align fire protection accordingly.

Continue Reading from Our Series:

• Learn more: Fire Safety for Green Buildings: Balancing Sustainability and Safety
• Related guide: Understanding Smoke Control Systems in Commercial Buildings
• Read more: Commercial Building Code Requirements for Fire Sprinkler Systems

IMPORTANT DISCLAIMER: This guide is based on the base text of NFPA 101, Chapter 43 (Building Rehabilitation) and NFPA 914, Code for the Protection of Historic Structures. However, NFPA 101 and NFPA 914 requirements vary significantly by edition (2018, 2021, 2024) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control. This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ.

Historic buildings present one of the most complex challenges in fire safety design. These structures are irreplaceable cultural assets, yet they were often built before modern fire codes existed—with combustible materials, open stairways, and limited egress paths that would never be permitted in new construction today.

The challenge is to protect the building and its occupants from fire while preserving the architectural character that makes it historically significant. This requires a balanced approach that respects both life safety and heritage preservation.

NFPA 101 addresses historic buildings through Chapter 43 (Building Rehabilitation), and NFPA 914 provides the specific code for the protection of historic structures.

This guide covers the unique fire safety challenges of historic buildings and the practical solutions for protecting them.

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◆ Section 1: Why Historic Buildings Are Different

Historic buildings present fire safety challenges that are fundamentally different from new construction.

Challenge	Description
Combustible Construction	Many historic buildings use heavy timber, wood framing, and other combustible materials that are integral to their character.
Open Stairways	Grand open staircases and atriums—often the centerpiece of historic buildings—can act as chimneys for fire and smoke.
Limited Egress	Narrow corridors, single exits, and winding paths are common in historic buildings built before modern egress requirements.
Outdated Systems	Old electrical wiring, heating systems, and lack of fire suppression are common.
Preservation Constraints	Alterations that would meet modern codes may be prohibited by historic preservation regulations.
Occupant Familiarity	Historic buildings often house museums, libraries, or public spaces where occupants may be unfamiliar with the layout.

Pro Tip:
The goal is not to make a historic building comply with every new-construction requirement—that would destroy its character. The goal is to achieve an equivalent level of safety through a combination of active and passive measures.

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◆ Section 2: The Regulatory Framework

A. NFPA 101, Chapter 43 (Building Rehabilitation)

NFPA 101, Chapter 43 establishes the requirements for work in existing buildings, including historic buildings. It provides a framework for determining which requirements apply based on the category of work being performed.

B. NFPA 914, Code for the Protection of Historic Structures

NFPA 914 is the dedicated code for historic structures. It provides a performance-based approach to fire safety that considers the unique characteristics of historic buildings.

Key Provisions of NFPA 914:

Provision	Description
Preservation Goal	The code recognizes that historic buildings should be preserved while providing an acceptable level of fire safety.
Performance-Based Approach	Designers can use alternative approaches to meet safety goals when strict code compliance would damage historic fabric.
Fire Risk Assessment	A comprehensive assessment must be conducted to identify hazards and evaluate risk.
Fire Safety Management	Ongoing management and maintenance are essential to fire safety in historic buildings.

C. The IEBC Alternative

The International Existing Building Code (IEBC) provides a similar framework for historic buildings, with specific provisions that allow alternative compliance methods. The applicant selects one compliance method as the sole basis for compliance.

IEBC Compliance Methods (2018/2021 Editions):

Compliance Method	Chapter	What It Covers
Prescriptive Compliance Method	Chapter 5	Repairs, alterations, additions, and changes of occupancy. Previously Chapter 34 of the IBC.
Repairs	Chapter 4	Standalone chapter applying across all compliance paths.
Work Area Compliance Method	Chapters 6–12	Alterations categorized by Level 1, 2, or 3; change of occupancy; additions; historic buildings.
Performance Compliance Method	Chapter 13	Numerical scoring system to demonstrate equivalent safety without full new-construction compliance.

Edition Note:
The Prescriptive Compliance Method was relocated from Chapter 4 to Chapter 5 in the 2018 IEBC, when repair provisions were pulled out of the individual compliance paths and consolidated into their own standalone Chapter 4. Always verify chapter numbers against the IEBC edition adopted by your jurisdiction.

Note on Chapter 12:
IEBC Chapter 12 (Historic Buildings) is the chapter within the Work Area Compliance Method written specifically for historic structures. It provides exceptions to the application of Chapters 7 through 11 for buildings accredited as being of historic significance by a state or local authority. Chapter 12 contains allowances for existing door swing direction, stair and corridor width, transoms, existing interior finishes, and other features that would otherwise be difficult to bring into strict compliance. If your building qualifies as historic under the IEBC definition, Chapter 12 should be your first stop.

Pro Tip:
Always engage a fire protection engineer with historic building experience. The alternative compliance paths require expert judgment to implement successfully.

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◆ Section 3: The Fire Risk Assessment

A fire risk assessment is the foundation of any historic building fire safety strategy.

What the Assessment Should Cover:

Assessment Area	Key Questions
Construction and Materials	What is the building constructed of? Where are the combustible materials?
Occupancy and Use	Who uses the building? How many occupants? Are they familiar with the layout?
Fire Protection Systems	What systems are already in place? Are they operational?
Means of Egress	How do occupants exit? Are exits sufficient and remote?
Fire Hazards	What ignition sources exist? What fuels are present?
Compartmentation	Are there fire barriers and smoke compartments? Are they intact?
Operational Procedures	What are the procedures for fire safety? Who is responsible?

Pro Tip:
The fire risk assessment for a historic building should be conducted by a team that includes a fire protection engineer, a preservation architect, and the building’s facilities manager.

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◆ Section 4: Fire Suppression Strategies for Historic Buildings

A. Sprinkler Systems

Sprinklers are the most effective fire protection system for historic buildings, but installation can be challenging.

Strategy	Description
Concealed Sprinklers	Use concealed heads that are flush with the ceiling and only appear when activated.
Sidewall Sprinklers	Install along walls where ceiling installation is not possible.
Flexible Piping	Use flexible connections to minimize impact on historic fabric.
Discreet Placement	Place sprinklers in areas where they are least visible (corners, behind beams).
Alternative Systems	Where sprinklers are not feasible, use water mist or gaseous systems.

Pro Tip:
Work with a sprinkler contractor who has experience with historic buildings. They will know how to minimize visual impact while maintaining protection.

B. Fire Extinguishers

Fire extinguishers should be:

• Discreetly placed in cabinets that match the historic character
• Clearly visible in critical areas (e.g., near exits, in kitchens)
• Properly maintained and inspected in accordance with NFPA 10

C. Standpipe and Hose Systems

Where standpipes are required, they should be:

• Concealed in walls or cabinets where possible
• Accessible to firefighters
• Properly maintained and tested

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◆ Section 5: Fire Alarm and Detection Systems

A. Smoke Detection

Challenge	Solution
Visible detectors	Use concealed detectors or those that blend with the ceiling.
Historic ceiling materials	Use addressable detectors or aspirating smoke detection systems.
Large open spaces	Use beam detectors or air sampling systems.

B. Notification Appliances

Challenge	Solution
Visible strobes	Use low-profile or concealed notification appliances.
Audibility	Use voice evacuation systems where required.
Historic finishes	Mount appliances in discreet locations.

Pro Tip:
Wireless fire alarm systems can significantly reduce installation costs and minimize damage to historic fabric. They are especially useful in buildings where running new conduit is impractical.

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◆ Section 6: Means of Egress in Historic Buildings

A. Common Egress Challenges

Challenge	Description
Single exits	Many historic buildings have only one exit.
Narrow corridors	Corridors may not meet current width requirements.
Open stairways	Grand staircases may not be enclosed.
Long travel distances	Paths to exits may exceed current limits.
Swing direction	Doors may swing inward instead of outward.

B. Egress Strategies

Challenge	Strategy
Single exits	Create new exits or use horizontal exits where possible.
Narrow corridors	Use smoke barriers to create compartments that limit smoke spread and provide areas of refuge.
Open stairways	Enclose stairways with glass or fire-rated materials that preserve visibility.
Long travel distances	Install additional exits or use smoke barriers to create refuge areas.
Swing direction	Reverse the swing direction of doors or install new doors.

Important Note on Terminology:
Do not confuse the term “smoke-protected” with a smoke barrier in a corridor. The term “smoke-protected” in the code applies specifically to smoke-protected assembly seating. A smoke barrier improves compartmentation and life safety, but it does not extend the exit access travel distance limit for the occupancy.

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◆ Section 7: Passive Fire Protection in Historic Buildings

A. Fire Barriers and Compartmentation

Challenge	Solution
Open floor plans	Install fire barriers to create compartments.
Historic walls	Use existing masonry walls as fire barriers where possible.
Penetrations	Firestop all penetrations in fire-rated assemblies.
Concealed spaces	Install fire blocking in concealed spaces.

B. Fire Doors

Challenge	Solution
Historic doors	Retrofit existing doors with fire-rated cores and self-closing devices.
Openings	Install fire-rated glass where visibility is important.
Hardware	Use modern hardware that meets code while matching historic style.

C. Interior Finishes

Challenge	Solution
Historic wood paneling	Apply fire-retardant treatments to combustible finishes.
Draperies and curtains	Use flame-resistant materials or treat existing materials.
Floor finishes	Use Class I or II floor finishes in egress paths.

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◆ Section 8: Fire Safety Management in Historic Buildings

Fire safety is not just about systems—it is also about management and operations.

Element	Description
Fire Safety Plan	A written plan outlining procedures for fire prevention, evacuation, and emergency response.
Staff Training	Training for all staff on fire safety procedures and use of fire extinguishers.
Fire Drills	Regular drills to ensure occupants know how to evacuate.
Maintenance	Regular inspection and maintenance of all fire protection systems.
Hot Work Permits	Permits required for welding, cutting, and other hot work.
Housekeeping	Keep exits clear, storage areas tidy, and combustible materials controlled.
Smoking Policies	Designated smoking areas with proper disposal.

Pro Tip:
A comprehensive fire safety management program is often the most cost-effective way to improve fire safety in historic buildings. It does not require physical alterations, and it can be implemented immediately.

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◆ Section 9: Case Study: The Notre-Dame Cathedral Fire

The Notre-Dame Cathedral fire of April 2019 is a stark reminder of the vulnerability of historic buildings to fire. The fire destroyed the cathedral’s roof and spire and caused significant damage to the interior.

Key Lessons from Notre-Dame:

Lesson	Application
Early Detection is Critical	The fire burned undetected for over 30 minutes. Modern detection systems could have alerted staff earlier.
Fire Suppression Saves Buildings	There were no sprinklers in the attic—where the fire started. Sprinklers could have controlled the fire before it spread.
Compartmentation Limits Damage	The fire spread through the attic and into the cathedral. Fire barriers could have limited the damage.
Pre-Incident Planning is Essential	Firefighters had to navigate a complex, historic structure with limited access. A pre-incident plan would have helped.
Preservation and Safety Can Coexist	The restoration of Notre-Dame demonstrates that fire safety and preservation can be balanced.

Pro Tip:
The Notre-Dame fire led to a global reevaluation of fire safety in historic buildings. Many jurisdictions have since updated their codes and requirements.

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◆ Section 10: Funding and Incentives for Historic Building Retrofits

Source	Description
Historic Preservation Tax Incentives	Federal and state tax credits for rehabilitating historic buildings.
Grants	Federal, state, and local grants for historic preservation and fire safety.
Preservation Easements	Legal agreements that protect historic buildings in exchange for tax benefits.
Local Programs	Many cities offer low-interest loans or grants for fire safety upgrades.
Insurance Discounts	Some insurers offer discounts for buildings with fire protection systems.

Pro Tip:
Always check with your State Historic Preservation Office (SHPO) for available funding and incentives before beginning a retrofit project.

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◆ Section 11: Design Checklist

Item	Status	Notes
Fire Risk Assessment	☐	Completed and documented.
Regulatory Compliance	☐	NFPA 914, NFPA 101 Chapter 43, and IEBC (including Chapter 12 if applicable).
Fire Suppression Systems	☐	Sprinklers, extinguishers, standpipes.
Fire Alarm and Detection	☐	Smoke detection, notification appliances, monitoring.
Means of Egress	☐	Exits, corridors, stairways, door swing.
Passive Fire Protection	☐	Fire barriers, fire doors, firestopping, interior finishes.
Fire Safety Management	☐	Plan, training, drills, maintenance.
Funding and Incentives	☐	Tax credits, grants, insurance discounts.
Verify Local AHJ Requirements	☐	Local amendments and adopted edition control.

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◆ Section 12: Common Mistakes and How to Avoid Them

Mistake	Why It’s a Problem	How to Fix
Applying New-Construction Code Blindly	May destroy historic character.	Use NFPA 914 and alternative compliance methods.
Ignoring the Fire Risk Assessment	Retrofit may not address the actual risks.	Conduct a thorough assessment before designing.
Concealing Fire Safety Systems Too Well	May delay response or maintenance.	Balance discretion with accessibility.
Not Involving the AHJ Early	May result in non-compliance or delays.	Engage the AHJ in the design process.
Neglecting Management and Operations	Systems may fail without proper maintenance.	Implement a comprehensive fire safety management program.
Skipping Funding Opportunities	May miss available financial incentives.	Research tax credits and grants before starting.
Using Outdated IEBC Chapter Numbers	May cite incorrect chapters.	Verify Prescriptive Method is Chapter 5 (2018/2021); Repairs is Chapter 4; Work Area is Chapters 6–12 (including Chapter 12 for Historic Buildings).

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◆ Section 13: Conclusion

Historic buildings are irreplaceable cultural assets, but they also present unique fire safety challenges. By using the alternative compliance methods in NFPA 914 and NFPA 101 Chapter 43, engaging qualified professionals, and implementing comprehensive fire safety management, you can protect these buildings while preserving their character.

Take Action Today:

1. Conduct a fire risk assessment of your historic building.
2. Engage a fire protection engineer with historic building experience.
3. Explore alternative compliance methods under NFPA 914 and the IEBC (remember Chapter 12 for historic buildings).
4. Balance preservation and safety by using discreet, effective solutions.
5. Implement a fire safety management program (plan, training, drills, maintenance).
6. Research funding and incentives (tax credits, grants, insurance discounts).
7. Always verify local amendments and the adopted code edition with your AHJ.

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Continue Reading from Our Series:

• Read more about: How to Design a Fire Safety Strategy for Existing Buildings (Retrofits)
  
• Learn more: How to Conduct a Fire Risk Assessment: A Step-by-Step Guide
  
• Related guide: How to Design Fire Safety for Atriums and Large Volumes
  

IMPORTANT DISCLAIMER:  This guide is based on the base text of NFPA 101, Chapters 32 (new) and 33 (existing). However, NFPA 101 requirements vary significantly by edition (2018, 2021, 2024) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control.  This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ.

Note on Facility Type: Many assisted living facilities are classified as residential board and care occupancies. However, some larger facilities may be classified as health care occupancies. Always verify the correct classification with your local AHJ.

Important Structural Note: Throughout this guide, requirements are organized by Small Facility (4-16 residents) and Large Facility (17+ residents), since most code provisions hinge on this distinction. Where requirements also differ between new and existing facilities, that is noted within each subsection.

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Residential board and care occupancies occupy a unique and challenging space in fire safety design. These facilities provide personal care services to residents who may have limited mobility, cognitive impairments, or other conditions that affect their ability to evacuate without assistance—yet they are not full healthcare facilities. NFPA 101 defines a residential board and care occupancy as “an occupancy used for lodging and boarding of four or more residents, not related by blood or marriage to the owners or operators, for the purpose of providing personal care services”. NFPA 101 addresses residential board and care occupancies in Chapter 32 (new) and Chapter 33 (existing). This guide covers the essential fire safety requirements for these occupancies.

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◆ Section 1: Defining Residential Board and Care Occupancies

NFPA 101 defines a residential board and care occupancy as “an occupancy used for lodging and boarding of four or more residents, not related by blood or marriage to the owners or operators, for the purpose of providing personal care services”.

Examples of Residential Board and Care Occupancies:

Type	Examples
Assisted Living	Assisted living facilities, personal care homes
Group Housing	Group homes for physically or mentally handicapped persons
Rehabilitation	Facilities for social rehabilitation, alcoholism, drug abuse, or mental health problems
Elderly Care	Group housing for the elderly that provides personal care but not nursing care

Small vs. Large Facilities:

Classification	Number of Residents
Small Facility	4 to 16 residents
Large Facility	17 or more residents

Critical Distinction: Residential board and care occupancies provide personal care services but not nursing care. Facilities that provide nursing care are typically classified as health care occupancies under Chapters 18/19.

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◆ Section 2: Evacuation Capability

The concept of evacuation capability is central to fire safety design in residential board and care occupancies. Unlike other occupancies where full building evacuation is the goal, board and care facilities may rely on a defend-in-place strategy depending on the residents’ capabilities.

Evacuation Capability Classifications:

Classification	Definition
Prompt	Evacuation capability equivalent to that of the general population
Slow	Evacuation capability of a group to move to a point of safety in a timely manner, with some residents requiring assistance from staff
Impractical	Evacuation capability of a group that, even with staff assistance, cannot reliably move to a point of safety in a timely manner

Evacuation Capability Determination:

The facility must conduct a Fire Safety Evacuation Scoring System (FSES) evaluation as listed in NFPA 101A, Alternatives to Life Safety, to determine the clients’ needs during a fire drill. The evaluation includes:

• Mobility
• Assistance to evacuate
• Staff needed
• Risk of resistance
• Clients’ ability to evacuate on their own
• Choosing an alternate exit

Evacuation Times (Kentucky example):

Time to Evacuate	Classification
3 minutes or less	Prompt (Acceptable)
Over 3 minutes, but not in excess of 13 minutes	Slow (Acceptable)
More than 13 minutes	Impractical (Not Acceptable)

Pro Tip: The evacuation capability determination is based on the time of day or night when evacuation would be most difficult, whether because of sleeping residents or fewer staff present.

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◆ Section 3: Means of Egress and Means of Escape

Important Distinction: Residential board and care occupancies use the concept of “means of escape” rather than the traditional “means of egress” found in other occupancies. This reflects the unique needs of residents who may require assistance and the possibility of a defend-in-place strategy.

A. Small Facilities (4-16 Residents)

For small board and care facilities, the provisions of Chapter 7 (Means of Egress) do not apply unless explicitly referenced. Instead, the facility must meet the requirements of 32.2.2 (New) or 33.2.2 (Existing).

Requirement	Details
Doors	Resident room doors must latch in their frame to resist the passage of smoke
Living Unit Doors	Doors between living units with cooking equipment and corridors must be self-closing or automatic-closing and latch to resist smoke
Stairs	If residents are housed on floors other than ground floor, at least two separate approved stairs must be provided
Stair Arrangement	Each stair must be arranged so it is not necessary to go through another room (including bedroom or bathroom) to reach the stair
Handrails	Each stair must be provided with handrails

B. Large Facilities (17+ Residents)

For large board and care facilities, the requirements are more aligned with traditional egress provisions.

Requirement	Details
Doors	Resident room doors must latch in their frame to resist the passage of smoke
Stairs	At least two separate approved stairs must be provided for floors other than ground floor
Marking	Means of egress must be marked in accordance with 32.3.2.10 (New) or 33.3.2.10 (Existing)
Emergency Lighting	Required in accordance with 32.3.2.9 (New) or 33.3.2.9 (Existing), unless each sleeping room has a direct exit to the outside at grade level

C. Lockups Prohibited (Both Facility Sizes)

The provisions of 32.3.2.11.2 (Lockups) for new facilities and 33.3.2.11.2 (Lockups) for existing facilities are not permitted in residential board and care occupancies.

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◆ Section 4: Fire Alarm, Detection, and CO Systems

A. Fire Alarm System (Both Facility Sizes)

A fire alarm system shall be provided in accordance with Section 13.7 (for existing) or 32.3.4/33.3.4 (for new/existing as applicable).

Requirement	Details
Initiation	By manual means in accordance with 13.7.1.7.1(1) or applicable new construction provisions
Occupant Notification	Provided automatically, without delay, in accordance with 13.7.1.9 or applicable new construction provisions

B. Smoke Alarms (Both Facility Sizes)

Approved smoke alarms shall be provided in accordance with 13.7.1.8 or 32.3.4/33.3.4.

Location	Requirement
All Levels	Including basements (excluding crawl spaces and unfinished attics)
Living Areas	Additional smoke alarms in all living areas
Each Sleeping Room	Each sleeping room must have an approved smoke alarm

C. Smoke Detectors (Large Facilities Only)

In a large board and care occupancy, approved smoke detectors shall be installed:

• Powered by the house electrical service
• When activated, shall initiate an alarm audible in the sleeping areas
• Detectors shall be installed on all levels, including basements but excluding crawl spaces and attics
• Additional detectors shall be installed for living rooms and day rooms

D. Carbon Monoxide Alarms and Detection Systems

Carbon monoxide alarms or detectors shall be provided in new residential board and care occupancies where either of the following conditions exists:

Facility Size	CO Detection Trigger	Locations
Small Facilities (4-16 residents)	Facility has communicating attached garages , OR facility contains fuel-burning appliances or fuel-burning fireplaces	Outside sleeping areas; within sleeping rooms containing fuel-burning appliances; every occupiable level; adjacent to garage
Large Facilities (17+ residents)	Facility has communicating attached garages, OR individual sleeping rooms or suites contain fuel-burning appliances or fireplaces	Outside sleeping areas; within sleeping rooms containing fuel-burning appliances; every occupiable level; adjacent to garage

Exceptions to CO Detection (Both Facility Sizes):

Exception	Details
Garages	CO alarms not required in garages
Open Parking Structures	Not required where attached garages are open parking structures
Mechanically Ventilated	Not required where attached garages are mechanically ventilated in accordance with the mechanical code

Note on Existing Facilities: The 2024 edition of NFPA 101 expanded CO detection requirements to additional occupancies. Always verify whether CO detection is required for existing residential board and care facilities in your jurisdiction.

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◆ Section 5: Hazardous Areas Protection (Both Facility Sizes)

Hazardous areas in residential board and care occupancies must be protected in accordance with NFPA 101 requirements.

Protection Options:

Condition	Requirement
Hazardous Area on Same Floor as Sleeping Room	Enclosure with 1-hour fire resistance rating with self-closing fire door (¾-hour rating) OR automatic sprinkler protection with smoke-resistant separation
Other Hazardous Areas	Enclosure with 20-minute fire resistance rating with self-closing door equivalent to 1¾-inch solid bonded wood core OR automatic sprinkler protection

Pro Tip: The intent is to protect sleeping areas from hazardous areas that are on the same floor or that abut the primary means of escape.

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◆ Section 6: Automatic Sprinkler Systems

A. Small Facilities (4-16 Residents)

Evacuation Capability	Sprinkler Requirement	Code Reference
Prompt	NFPA 13D permitted	NFPA 101, 32.2.3.5.1 / 33.2.3.5.1
Slow or Impractical	NFPA 13D with 30-minute water supply	NFPA 101, 33.2.3.5.2, Exception No. 2
Prompt (≤8 residents, 3-min evacuation)	Sprinklers may be omitted in conversions	NFPA 101, 32.2.3.5.2

B. Large Facilities (17+ Residents)

Requirement	Details	Code Reference
New Large Facilities	Protected throughout with NFPA 13 system using quick-response or residential sprinklers	NFPA 101, 32.3.5
Existing Large Facilities (≤4 stories, prompt or slow)	NFPA 13R permitted	NFPA 101, 33.3.3.5.1
Existing Large Facilities (Impractical)	NFPA 13 required throughout	NFPA 101, 33.3.3.5

Note on NFPA 13D and 13R: These standards are permitted outside their normal scopes for board and care occupancies based on the recognition that fires in these facilities are similar to other residential occupancies. For slow and impractical evacuation capability facilities, NFPA 13D systems are supplemented with a 30-minute water supply requirement to compensate for the special needs of the board and care occupancy.

Note on Local Requirements: Sprinkler requirements vary significantly by jurisdiction. For example, the Harrisburg, PA code requires sprinklers in all new and existing board and care occupancies with a five-year compliance period for existing facilities . Always verify with your local AHJ.

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◆ Section 7: Fire Drills and Emergency Planning (Both Facility Sizes)

A. Fire Drill Frequency

Facility Type	Requirement
General Board and Care	Fire drills shall be conducted at regular intervals
Texas Facilities (Example)	One fire drill per shift each calendar quarter (minimum of 12 drills per year)
Kentucky ALCs (Example)	6 fire drills per year, 2 at inconvenient times

B. Fire Drill Requirements

The fire drills for facilities built to the residential board and care chapter of the Life Safety Code (NFPA 101) shall be permitted to be announced, in advance, to the clients just prior to the drill .

C. Written Record of Fire Drills

Facilities shall complete a written record of fire drills that includes:

1. The date and time, including AM/PM, the drill was conducted and if the actual fire alarm system was used
2. The location of exits used
3. The number of people, including clients, personnel, and visitors, participating at the time of the drill
4. The amount of time taken to completely evacuate the facility
5. The name and title of the person conducting the drill
6. A list of problems and issues encountered during the drill
7. A list of improvements and resolution to the issues encountered during the drill
8. The names of all staff members participating in the drill

D. Staff Requirements

At no time shall a staff member who has not participated in a fire drill be the only staff member on duty within the facility.

E. Fire Safety Evacuation Scoring System (FSES)

At admission, the facility shall conduct a client Fire Safety Evacuation Scoring System (FSES) as listed in NFPA 101A, Alternatives to Life Safety, to determine the clients’ needs during a fire drill including:

• Mobility
• Assistance to evacuate
• Staff needed
• Risk of resistance
• Clients’ ability to evacuate on his or her own
• Choosing an alternate exit

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◆ Section 8: Oxygen Cylinder Storage (Both Facility Sizes)

Storage and use of oxygen cylinders or systems shall comply with NFPA 99, Health Care Facilities Code, including but not limited to:

Requirement	Details
Separation from Combustibles	Minimum distance of 6.1 m (20 ft)
Sprinklered Storage	Minimum distance of 1.5 m (5 ft) if the entire storage location is protected by an automatic sprinkler system
Gas Cabinet	A gas cabinet constructed per NFPA 30 may be used

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◆ Section 9: Design Checklist

Item	Status	Notes
Occupancy Classification	☐	Confirm 4+ residents receiving personal care services
Facility Size	☐	Small (4-16) or Large (17+)
Evacuation Capability	☐	Prompt, Slow, or Impractical
Means of Escape	☐	Verify doors latch to resist smoke
Two Stairs (Multi-Story)	☐	Required for floors other than ground floor
Fire Alarm System	☐	Required with automatic occupant notification
Smoke Alarms	☐	Required on all levels, living areas, and sleeping rooms
Smoke Detectors (Large)	☐	Required in large facilities
CO Alarms/Detectors	☐	Small: facility-wide trigger; Large: in-room trigger
Hazardous Area Protection	☐	1-hour or 20-minute enclosure OR sprinkler
Sprinkler System (Small)	☐	NFPA 13D (prompt); 13D + 30-min water (slow/impractical)
Sprinkler System (Large)	☐	NFPA 13 (new); 13R permitted (existing ≤4 stories, prompt/slow)
Fire Drills	☐	Documented; verify frequency with AHJ
Oxygen Storage	☐	NFPA 99 compliance
Verify Local AHJ Requirements	☐	Local amendments and adopted edition control

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◆ Section 10: Common Mistakes and How to Avoid Them

Mistake	Why It’s a Problem	How to Fix
Misclassifying the Occupancy	Applying health care requirements instead of board and care	Confirm facility provides personal care but not nursing care
Ignoring Evacuation Capability	May design for the wrong evacuation strategy	Conduct FSES evaluation and document evacuation capability
Inadequate Door Latching	Smoke can spread into sleeping areas	Ensure resident room doors latch in frame to resist smoke passage
Missing CO Detection in Large Facilities	Residents exposed to “silent killer”	Install CO alarms where attached garage or in-room fuel-burning appliances exist
Using NFPA 13D for Large Facilities	Incorrect sprinkler standard	Use NFPA 13 for large facilities; 13D is for small facilities only
No Fire Drill Documentation	Cannot demonstrate compliance	Maintain written records of all drills
Oxygen Storage Violations	Fire hazard from oxidizing gases	Follow NFPA 99 separation requirements
Assuming Local Rules Match Base Code	May miss stricter state requirements	Always verify with local AHJ

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◆ Section 11: Conclusion

Residential board and care occupancies require a fire safety strategy that reflects their unique characteristics—residents who may have limited mobility or cognitive impairments, and the possibility of a defend-in-place strategy depending on evacuation capability. By understanding the evacuation capability concept, providing adequate means of escape, installing appropriate fire alarm and suppression systems, and conducting regular fire drills, you can design facilities that protect residents and comply with regulatory requirements.

Take Action Today:

1. Confirm the occupancy classification (residential board and care, not health care).
2. Determine facility size (small 4-16 or large 17+).
3. Conduct an evacuation capability evaluation using NFPA 101A FSES.
4. Provide means of escape with doors that latch to resist smoke.
5. Install fire alarm, CO detection, and smoke alarms as required for your facility size.
6. Protect hazardous areas with appropriate enclosures or sprinklers.
7. Install sprinklers using the correct standard for your facility size (13D for small; 13 for large).
8. Document all fire drills and maintain records.
9. Verify oxygen storage complies with NFPA 99.
10. Always verify local amendments and the adopted NFPA 101 edition with your AHJ.

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Continue Reading from Our Series:

• Read more about: How to Design Fire Safety for Assembly Occupancies
• Learn more: How to Design Fire Safety for Industrial Occupancies
• Related guide: How to Design Fire Safety for Healthcare Occupancies

 

IMPORTANT DISCLAIMER:  This guide is based on the base text of NFPA 101, Chapters 12 (new) and 13 (existing). However, NFPA 101 requirements vary significantly by edition (2018, 2021, 2024) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control. This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ.

Edition-Sensitive Provisions: Several requirements in this article changed between editions. Where an edition-specific change is material to the design, it is flagged in the relevant section.  Always verify requirements against the edition adopted by your jurisdiction.

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Assembly occupancies are among the most challenging to design for fire safety. These spaces bring together large numbers of occupants who are often unfamiliar with the building layout and focused on the event, not on emergency preparedness. The combination of high occupant density and transient populations creates a significant life-safety challenge. NFPA 101 defines an assembly occupancy as “an occupancy (1) used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses; or (2) used as a special amusement building, regardless of occupant load”. NFPA 101 addresses assembly occupancies in Chapter 12 (new) and Chapter 13 (existing). This guide covers the essential fire safety requirements for assembly occupancies.

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◆ Section 1: Defining Assembly Occupancies

NFPA 101 defines an assembly occupancy as an occupancy used for a gathering of 50 or more persons for deliberation, worship, entertainment, eating, drinking, amusement, awaiting transportation, or similar uses.

Occupancy Type	Description	NFPA 101 Chapter
Assembly Occupancy	Gathering of 50+ persons	Chapter 12 (New) / Chapter 13 (Existing)
Business Occupancy	Transaction of business other than mercantile	Chapter 38/39
Mercantile Occupancy	Display and sale of merchandise	Chapter 36/37

Examples of Assembly Occupancies :

Type	Examples
Entertainment	Theaters, cinemas, concert halls, nightclubs
Dining	Restaurants, bars, banquet halls
Religious	Churches, synagogues, mosques
Assembly Halls	Auditoriums, gymnasiums, arenas
Other	Museums, libraries, bowling lanes, courtrooms

Pro Tip: The distinction between assembly and other occupancies depends on occupant load. A conference room within a business occupancy is classified as assembly use (not a separate assembly occupancy) if it has an occupant load of 50 or more .

Special Amusement Buildings: A special amusement building is one that contains a device or system that conveys passengers or provides a walkway along, around, or over a course in any direction as a form of amusement arranged so that the egress path is not readily apparent. This includes haunted houses and may include escape rooms. Special amusement buildings are classified as assembly occupancies regardless of occupant load.

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◆ Section 2: Means of Egress

A. Number of Exits

The number of exits required depends on the occupant load.

Occupant Load	Minimum Number of Exits	Code Reference
< 500	2	NFPA 101, 7.4
500–1,000	3	NFPA 101, 7.4
> 1,000	4	NFPA 101, 7.4

B. Main Entrance Sizing

For assembly occupancies, the main entrance/exit may need to be sized to accommodate one-half or even two-thirds of the occupant load. This is a critical design consideration that significantly impacts door width and lobby design.

C. Travel Distance

Condition	Maximum Travel Distance	Code Reference
Non-Sprinklered	200 ft (61 m)	NFPA 101, 12.2.6
Sprinklered	250 ft (76 m)	NFPA 101, 12.2.6

D. Exit Remoteness

The separation between two exits must be at least one-half the length of the maximum overall diagonal dimension of the building area served. If the building is sprinklered, the separation may be reduced to one-third.

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◆ Section 3: Fire Alarm and Detection Systems

A. General Requirement

Fire alarm system requirements for assembly occupancies are based on the occupant load and whether the building is new or existing.

Condition	Fire Alarm System Requirement	Code Reference
New Assembly, OL > 300	Required	NFPA 101, 12.3.4.1
New Assembly, OL ≤ 300	Not required (unless other conditions apply)	NFPA 101, 12.3.4.1
Existing Assembly, OL > 300	Required	NFPA 101, 13.3.4.1

Edition/Code Note:  The NFPA 101 threshold for an emergency voice/alarm communication system (EVACS) is OL > 300. This differs from the IBC, which uses OL > 1,000 for the same requirement. Always verify which code governs your project.

B. Initiation

Initiation of the required fire alarm system shall be by both of the following means :

1. Manual means in accordance with 9.6.2.1(1), unless automatic detection or sprinkler systems provide full building coverage.
2. Automatic sprinkler system waterflow, where automatic sprinklers are provided.

C. Notification

The required fire alarm system shall activate an audible alarm in a constantly attended receiving station within the building when occupied for purposes of initiating emergency action .

D. Voice Announcements

Occupant notification shall be by means of voice announcements initiated by the person in the constantly attended receiving station . The announcement shall be permitted to be made via a voice communication or public address system.

E. Positive Alarm Sequence

Positive alarm sequence in accordance with 9.6.3.4 shall be permitted in both new and existing assembly occupancies (NFPA 101, 12.3.4.3.1/13.3.4.3.1).

F. Presignal System (Existing Only)

A presignal system in accordance with 9.6.3.3 shall be permitted only in existing assembly occupancies (NFPA 101, 13.3.4.3.2). This provision does not apply to new assembly occupancies—presignal systems are intentionally restricted to existing buildings where an approved system may already be in place.

G. Automatic Detection in Hazardous Areas

In existing assembly occupancies with occupant loads of more than 300, automatic detection shall be provided in all hazardous areas that are not normally occupied, unless such areas are protected throughout by an approved automatic sprinkler system.

Pro Tip: The intent is to require detectors only in nonsprinklered hazardous areas that are unoccupied. Where the building is occupied, the detectors in the unoccupied, unsprinklered hazardous areas will initiate occupant notification.

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◆ Section 4: Construction Type Limitations

Assembly occupancies are limited to specific building construction types based on the number of stories in height .

Construction Type	Sprinklered	Stories Below	1	2	3	4	≥5
I (442)	Yes	X	X	X	X	X	X
I (442)	No	NP	X4	X4	X4	X4	X4
II (222)	Yes	X	X	X	X	X	X
II (111)	Yes	X1	X	X	X	X3	NP
II (000)	Yes	X2	X	X4	NP	NP	NP
III (211)	Yes	X1	X	X	X	X3	NP
III (200)	Yes	X2	X3	X4	NP	NP	NP
IV (2HH)	Yes	X1	X	X	X	X3	NP
V (111)	Yes	X1	X	X	X	X3	NP
V (000)	Yes	X2	X3	X4	NP	NP	NP

Key to Table:

• X: Permitted for assembly of any occupant load.
• X1: Permitted for assembly of any occupant load, but limited to one story below the level of exit discharge.
• X2: Permitted for assembly limited to an occupant load of 1000 or less, and limited to one story below the level of exit discharge.
• X3: Permitted for assembly limited to an occupant load of 1000 or less.
• X4: Permitted for assembly limited to an occupant load of 300 or less.
• NP: Not permitted.

Edition Note: The construction type limitations in this table are based on the 2018 edition of NFPA 101, Table 12.1.6 / 13.1.6. Construction type limitations have remained substantially similar across recent editions (2015, 2018, 2021), but always verify the table against the edition adopted by your jurisdiction.

Note on Non-Monotonic Progression: The progression in this table is not always monotonic. For example, II (000) sprinklered shows X (unrestricted) at 1 story but X4 (OL ≤ 300) at 2 stories. This is a deliberate reflection of the code’s risk-based logic: Type II (000) construction has no fire-resistance rating on structural elements, so at 2 stories, occupants on the upper floor depend on an unprotected floor assembly, dramatically increasing risk. The progression is intentional, not an error.

Note on III (200) Construction: An assembly space is not permitted on any level above second (above level of exit discharge) in a building of III (200) construction type with or without full sprinkler protection.

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◆ Section 5: Automatic Sprinkler Systems

A. New Assembly Occupancies

Under base NFPA 101, the following new assembly occupancies are required to be protected by an approved, supervised automatic sprinkler system (NFPA 101, 12.3.5.1):

Occupancy	Sprinkler Requirement	Code Reference
Nightclubs / Dance Halls / Discotheques	Required (regardless of occupant load)	NFPA 101, 12.3.5.1
Festival Seating Venues	Required (regardless of occupant load)	NFPA 101, 12.3.5.1
Restaurants (Assembly)	Required beginning with the 2021 edition	NFPA 101, 12.3.5.2

Edition Note: The requirement to sprinkler new restaurants was added in the 2021 edition of NFPA 101. Projects designed under earlier editions may not have this requirement unless amended by the local AHJ.

B. Existing Assembly Occupancies

Under base NFPA 101, existing assembly occupancies classified as a nightclub, dance hall, or discotheque are required to have sprinkler protection where the occupant load exceeds 100 (NFPA 101, 13.3.5.1). This requirement originated from Tentative Interim Amendment #739R, adopted following The Station Nightclub fire and later codified into NFPA 101 for existing occupancies.

Note on Local Amendments: Some jurisdictions adopt amendments that expand the specific uses requiring sprinklers in existing assembly occupancies. For example, Montgomery County, MD requires sprinklers in bars, dance halls, discotheques, nightclubs, and assembly occupancies with festival seating where the occupant load exceeds 100. Always verify with your local AHJ.

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◆ Section 6: Emergency Lighting

A. General Requirement

Emergency lighting shall be provided in assembly occupancies in accordance with NFPA 101 Section 7.9 .

Requirement	Details
Operation	Shall operate within 10 seconds of power interruption
Duration	Minimum 1½ hours (90 minutes)
Activation	Failure of public utility, opening of circuit breaker/fuse, or opening of switch controlling normal lighting

B. Exceptions

Exception	Details	Code Reference
Private Party Tents	Private party tents not exceeding 1,200 square feet do not need to follow emergency lighting requirements	NFPA 101, 12.2.9.2 / 13.2.9.2-3
Places of Worship	Assembly occupancies used exclusively for religious worship with an occupant load less than 300 are exempt	NFPA 101, 12.2.9.2 / 13.2.9.2-3

Important Clarification: The worship space exemption for emergency lighting (OL < 300) is separate from the crowd manager exemption for worship spaces (see Section 7C). These are two different requirements with different thresholds and should not be conflated.

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◆ Section 7: Crowd Management

A. Crowd Manager Requirement

Assembly occupancies shall be provided with a minimum of one trained crowd manager or crowd manager supervisor.

B. Ratio of Crowd Managers

Occupant Load	Requirement
≤ 250	1 crowd manager
> 250	Additional crowd managers at a ratio of 1 per 250 occupants

C. Exceptions to Crowd Manager Ratio

Exception	Details	Code Reference
Religious Worship	Does not apply to assembly occupancies used exclusively for religious worship with an occupant load not exceeding 500	NFPA 101, 12.7.6.1 / 13.7.6.1
Sprinklered Buildings	Ratio may be reduced where an approved, supervised automatic sprinkler system and the nature of the event warrant, as determined by the AHJ

Citation Note: The crowd manager worship exemption threshold (OL ≤ 500) is sourced from NFPA 101, 12.7.6.1 / 13.7.6.1. NFPA 1 (the Fire Code) extracts this same provision for enforcement purposes, but the requirement originates in the Life Safety Code.

Important Clarification: The crowd manager exemption for worship spaces (OL ≤ 500) is separate from the emergency lighting exemption for worship spaces (OL < 300). These are two different requirements with different thresholds.

D. Crowd Manager Responsibilities

The crowd manager is responsible for defining the establishment’s emergency plan for evacuation and ensuring that employees properly understand their roles in crowd management and assisting in directing the crowd in an orderly manner for evacuation.

Pro Tip: Crowds are more dangerous when they are on the move. Fatalities usually occur at the points of ingress, socareful planning of entry and exit procedures is critical.

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◆ Section 8: Design Checklist

Item	Status	Notes
Occupancy Classification	☐	Confirm 50+ persons or special amusement building
Number of Exits	☐	Based on occupant load (2, 3, or 4)
Main Entrance Sizing	☐	May need to accommodate ½ or ⅔ of occupant load
Travel Distance	☐	200 ft / 250 ft (sprinklered)
Exit Remoteness	☐	½ diagonal / ⅓ diagonal (sprinklered)
Fire Alarm System	☐	Required for OL > 300 (NFPA 101)
Voice Announcement	☐	Required for occupant notification
Positive Alarm Sequence	☐	Permitted in new and existing
Presignal System	☐	Permitted in existing only
Construction Type	☐	Verify limitations based on stories and sprinkler status
Sprinkler System (New)	☐	Required for nightclubs/dance halls; restaurants (2021)
Sprinkler System (Existing)	☐	Required for nightclubs/dance halls at OL > 100
Emergency Lighting	☐	Required; verify exceptions (tents, worship <300)
Crowd Managers	☐	1 per 250 occupants; worship exemption ≤500
Verify Local AHJ Requirements	☐	Local amendments and adopted edition control

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◆ Section 9: Common Mistakes and How to Avoid Them

Mistake	Why It’s a Problem	How to Fix
Undersizing Main Entrance	Bottleneck at primary exit	Size to accommodate ½ or ⅔ of occupant load
Inadequate Exit Remoteness	Both exits may be blocked by fire	Ensure exits are remote from each other
Ignoring Construction Type Limits	Assembly may be prohibited on certain floors	Verify Table 12.1.6/13.1.6 limits
No Voice Announcement	Occupants may not hear or understand alarm	Provide voice communication system
Insufficient Crowd Managers	Crowd cannot be directed effectively	Provide 1 per 250 occupants
Overlooking Special Amusement Classification	Escape rooms and haunted houses may be misclassified	Classify as assembly regardless of occupant load
Confusing Worship Space Exemptions	Emergency lighting (<300) and crowd managers (≤500) have different thresholds	Verify each exemption separately
Assuming Presignal Applies to New Construction	Presignal is existing-only	Use PAS for new construction
Using IBC EVACS Threshold	NFPA 101 uses OL > 300; IBC uses OL > 1,000	Verify which code governs
Misattributing Crowd Manager Threshold	Threshold is NFPA 101, not NFPA 1	Cite NFPA 101, 12.7.6.1 / 13.7.6.1
Omitting New Nightclub Sprinkler Requirement	New nightclubs require sprinklers regardless of OL	Reference NFPA 101, 12.3.5.1

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◆ Section 10: Conclusion

Assembly occupancies require a fire safety strategy that reflects their unique characteristics—high occupant density, unfamiliar occupants, and the critical importance of rapid, orderly evacuation. By providing adequate egress, reliable fire alarms with voice communication, and trained crowd managers, you can design facilities that protect occupants and comply with regulatory requirements.

Take Action Today:

1. Confirm the occupancy classification (50+ persons or special amusement building).
2. Provide adequate exits based on occupant load.
3. Size the main entrance to accommodate ½ or ⅔ of the occupant load.
4. Install fire alarm systems with voice announcement for OL > 300.
5. Verify construction type limitations for assembly spaces.
6. Provide trained crowd managers at the required ratio.
7. Distinguish between worship space exemptions for emergency lighting and crowd managers.
8. Verify whether your project is governed by NFPA 101 or IBC for EVACS thresholds.
9. Always verify local amendments and the adopted NFPA 101 edition with your AHJ.

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Continue Reading from Our Series:

• Read more about: How to Design Fire Safety for Industrial Occupancies
• Learn more: How to Design Fire Safety for Storage Occupancies
• Related guide: How to Design Fire Safety for Covered Mall Buildings

 

IMPORTANT DISCLAIMER: This guide is based on the base text of NFPA 101, Chapter 40 (Industrial Occupancies). However, NFPA 101 requirements vary significantly by edition (2018, 2021, 2024) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control. This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ. Section numbers cited in this guide are based on the 2018 edition of NFPA 101; verify section numbers with the edition adopted in your jurisdiction.

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Industrial occupancies encompass a diverse range of facilities where products are manufactured, processed, assembled, mixed, packaged, finished, decorated, or repaired. Unlike storage occupancies, which are primarily for sheltering goods, industrial occupancies involve active operations that can introduce unique fire hazards—from flammable liquids and combustible dusts to heat-producing equipment and complex processes. NFPA 101 defines an industrial occupancy as “an occupancy in which products are manufactured or in which processing, assembling, mixing, packaging, finishing, decorating, or repair operations are conducted”. This includes factories, food processing plants, gas plants, hangars, laundries, pumping stations, sawmills, telephone exchanges, and dry-cleaning plants. NFPA 101 addresses industrial occupancies in Chapter 40 (for both new and existing). This guide covers the essential fire safety requirements for industrial occupancies.

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◆ Section 1: Defining Industrial Occupancies

NFPA 101 defines an industrial occupancy as an occupancy where products are manufactured or where processing, assembling, mixing, packaging, finishing, decorating, or repair operations are conducted.

Occupancy Type	Description	NFPA 101 Chapter
Industrial Occupancy	Manufacturing, processing, and assembly	Chapter 40
Storage Occupancy	Storage or sheltering of goods	Chapter 42
Business Occupancy	Transaction of business other than mercantile	Chapter 38/39

Examples of Industrial Occupancies:

Type	Examples
Manufacturing	All types of factories, assembly plants
Processing	Food processing plants, chemical plants
Service	Laundries, dry-cleaning plants, pumping stations
Other	Gas plants, hangars, sawmills, telephone exchanges

Pro Tip: The distinction between industrial and storage occupancies is critical. Areas used for packaging, labeling, sorting, special handling, or other operations requiring an occupant load greater than that normally contemplated for storage are classified as industrial occupancies.

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◆ Section 2: Means of Egress

A. Number of Exits

Not less than two means of egress shall be provided on each story, and not less than one exit shall be reachable without traversing another story (NFPA 101, 40.2.4.1.1).

Key Point: The requirement that at least one exit be reachable without traversing another story means that at least one of the required exits on each story must be a true exit (e.g., an enclosed exit stair, a door to the exterior, a horizontal exit, or an exit passageway) that can be reached directly from that story—not an exit access component that requires occupants to first travel to a different floor to reach safety.

Conditions for Single Exit:

In ordinary hazard industrial occupancies, a single means of egress is permitted from any story or section where the exit can be reached within the permitted common path of travel, provided that (NFPA 101, 40.2.4.1.2):

1. The building is not classified as high-hazard (per Section 6.2.2.4).
2. The single exit must be a door to the exterior, an enclosed exit stair, a horizontal exit, or an exit passageway directly available from each floor.

Important: If the industrial occupancy is considered high-hazard, Section 7.11 (Special Provisions for Occupancies with High-Hazard Contents) applies. This section requires two exits from high-hazard spaces unless the space is no larger than 200 ft² (18.6 m²), has an occupant load of no more than 3 people , and has a travel distance to the room door no longer than 25 ft (7,620 mm).

B. Exit Access and Travel Distances

Travel distance limitations for industrial occupancies are based on the level of hazard of contents and whether the building is sprinklered .

Level of Protection	Low Hazard	Ordinary Hazard	High Hazard
Sprinklered	No limit	250 ft (76 m)	100 ft (30 m)
Not Sprinklered	No limit	200 ft (61 m)	75 ft (23 m)

Note on Low Hazard: Low-hazard contents are those of such low combustibility that no self-propagating fire can occur. Because of this, the code imposes no travel distance limit for low-hazard industrial occupancies.

C. Common Path of Travel

Condition	Maximum Common Path	Code Reference
Ordinary Hazard, Non-Sprinklered	50 ft (15 m)	NFPA 101, 40.2.5
Ordinary Hazard, Sprinklered	100 ft (30 m)	NFPA 101, 40.2.5

D. Exit Remoteness

The separation between two exits must be at least one-half the length of the maximum overall diagonal dimension of the building area served. If the building is sprinklered in accordance with NFPA 13, the separation may be reduced to one-third.

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◆ Section 3: Fire Alarm and Detection Systems

A. General Requirement

Fire alarm system requirements for industrial occupancies are based on the hazard of contents and the aggregate floor area (NFPA 101, 40.3.4.1).

Condition	Fire Alarm System Requirement	Code Reference
Ordinary Hazard, ≤100,000 ft²	Not required (base NFPA 101)	NFPA 101, 40.3.4.1.2
Ordinary Hazard, >100,000 ft²	Required	NFPA 101, 40.3.4.1.2
High Hazard	Required	NFPA 101, 40.3.4.1.3

B. Initiation

Initiation of the required fire alarm system shall be by any of the following means (NFPA 101, 40.3.4.2):

1. Manual means in accordance with 9.6.2.1(1).
2. Approved automatic fire detection system throughout the building, plus a minimum of one manual fire alarm box.
3. Approved, supervised automatic sprinkler system throughout the building, plus a minimum of one manual fire alarm box.

C. Notification

The required fire alarm system shall meet one of the following criteria (NFPA 101, 40.3.4.3):

1. It shall provide occupant notification in accordance with 9.6.3.
2. It shall sound an audible and visible signal in a constantly attended location for the purposes of initiating emergency action.

D. High Hazard Industrial Occupancies

In high hazard industrial occupancies , as described in 40.1.4.1.3, the required fire alarm system shall automatically initiate an occupant evacuation alarm signal in accordance with 9.6.3 (NFPA 101, 40.3.4.3.4).

E. Positive Alarm Sequence (Ordinary Hazard Only)

Positive alarm sequence in accordance with 9.6.3.4 shall be permitted in ordinary hazard industrial occupancies (NFPA 101, 40.3.4.3.2).

Important Limitation: A positive alarm sequence shall not be used in high hazard industrial occupancies. In high hazard occupancies, the required fire alarm system shall automatically initiate an occupant evacuation alarm signal in accordance with 9.6.3 (NFPA 101, 40.3.4.3.4). The investigation delay inherent in a positive alarm sequence is incompatible with the immediate evacuation mandate for high-hazard spaces .

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◆ Section 4: Protection of Hazardous Areas

Hazardous areas in industrial occupancies must be protected in accordance with NFPA 101 Section 8.7.

Definition of Hazardous Area: A hazardous area is “an area of a structure or building that poses a degree of hazard greater than that normal to the general occupancy of the building or structure”.

Protection Options (NFPA 101 Section 8.7.1.1):

Option	Requirement
1	Enclose the area with a fire barrier having a 1-hour fire resistance rating
2	Protect the area with an automatic extinguishing system (sprinklers)
3	Both separating the area and protecting it with an automatic sprinkler system if the hazard is severe or required by the occupancy chapter

High Hazard Contents Areas:

High hazard contents areas shall meet all of the following criteria (NFPA 101, 40.3.2.2):

1. The area shall be separated from other parts of the building by fire barriers having a minimum 1-hour fire resistance rating, with all openings therein protected by self-closing fire door assemblies having a minimum ¾-hour fire protection rating.
2. The area shall be protected by an automatic extinguishing system.

Common Hazardous Areas in Industrial Occupancies:

Hazardous Area	Examples
Flammable Liquid Storage	Gasoline, solvents, paints
Combustible Dust Areas	Grain dust, wood flour, plastic dust, aluminum or magnesium dust
Heat-Producing Appliances	Furnaces, boilers, ovens
Chemical Storage	Toxic, noxious, or corrosive materials

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◆ Section 5: Automatic Sprinkler Systems

A. When Sprinklers Are Required

Condition	Requirement
High Hazard Contents	Sprinkler system required
High-Rise Buildings	Sprinkler system required (or an engineered life safety system)
Local Amendments	May impose additional requirements

B. Sprinkler System Design

Sprinkler systems in industrial occupancies must be designed in accordance with NFPA 13 or the applicable standard for the specific hazard.

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◆ Section 6: Emergency Lighting

A. General Requirement

Emergency lighting is required in industrial occupancies in accordance with NFPA 101 Section 7.9.

Requirement	Details
Duration	Minimum 90 minutes
Initial Illumination	Minimum average of 1 foot-candle (10.8 lux) at floor level
Minimum at Any Point	Not less than 0.1 foot-candle (1.1 lux)
Maximum-to-Minimum Ratio	Not over 40:1

B. Special-Purpose Industrial Occupancies

Emergency lighting is not required in special-purpose industrial occupancies without routine human habitation (NFPA 101, 40.2.9.2(1)).

Pro Tip: Even if not directly required by code, the potential hazards often justify the inclusion of emergency lighting—especially if the safety of first responders could be impacted.

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◆ Section 7: Special Considerations

A. High-Hazard Industrial Occupancies

High-hazard industrial occupancies are those where gasoline and other flammable liquids are handled, used, or stored under conditions that release flammable vapors; where grain dust, sawdust, plastic dust, aluminum or magnesium dust, or other explosive dusts are generated; where dangerous chemicals are manufactured, stored, or handled; or where cotton or other combustible fibers are processed under conditions that could generate suspended combustible material.

B. Change of Use

A change in use may require a change in construction type or fire separation. A new process initiated in an existing building may require fire separation from other areas. A change to a high-hazard use may not comply with the adopted building code where separations are required, an upgrade to a higher construction standard is mandated, or where fire protection system requirements are not complied with.

C. Operational Hazards

Industrial occupancies can produce an abundance of hazards. Key areas of concern include:

• Operational error– personnel not following mechanical or operational procedures
• Equipment failure– frayed wires, oil/grease buildup, poor housekeeping
• Procedural deficiencies– prescribed steps not being followed
• Maintenance weaknesses– lack of scheduled maintenance programs
• Insufficient supervision/training– inadequate training for safe industrial operations
• Natural phenomena– earthquakes, floods, high winds, lightning
• Environmental conditions– safe disposal of waste, proper venting of gas fumes

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◆ Section 8: Design Checklist

Item	Status	Notes
Occupancy Classification	☐	Confirm industrial occupancy (not storage)
Two Remote Exits	☐	From each story (unless single exit conditions apply)
One Exit Reachable Without Traversing Another Story	☐	At least one true exit directly accessible from each story
Single Exit Conditions	☐	Verify ordinary hazard, not high hazard, and exit type
Travel Distance	☐	200 ft / 250 ft (sprinklered) for ordinary hazard; no limit for low hazard
Common Path of Travel	☐	50 ft / 100 ft (sprinklered) for ordinary hazard
Exit Remoteness	☐	½ diagonal / ⅓ diagonal (sprinklered)
Fire Alarm System	☐	Required for >100,000 ft² or high hazard
High-Hazard Notification	☐	Automatic occupant evacuation alarm required
Positive Alarm Sequence	☐	Permitted only in ordinary hazard occupancies
Hazardous Area Protection	☐	1-hour enclosure OR sprinkler; both for severe hazards
Emergency Lighting	☐	Required unless special-purpose industrial exception applies
Verify Local AHJ Requirements	☐	Local amendments and adopted edition control

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◆ Section 9: Common Mistakes and How to Avoid Them

Mistake	Why It’s a Problem	How to Fix
Misclassifying the Occupancy	Applying storage requirements instead of industrial	Confirm primary use is manufacturing/processing
Applying Single Exit in High Hazard	High-hazard spaces require two exits	Verify hazard classification and apply Section 7.11
Confusing Exit Count with Exit Reachability	Misreading 40.2.4.1.1 as a count requirement	Understand the requirement is about at least one true exit being directly reachable from each story
Inadequate Hazardous Area Protection	Fire can spread from flammable storage or dust areas	Apply 1-hour enclosures or sprinkler protection per Section 8.7
Using Positive Alarm Sequence in High Hazard	Delays evacuation in a high-risk environment	PAS is permitted only in ordinary hazard occupancies
Ignoring High-Hazard Notification	Occupants may not be alerted to evacuation	High-hazard industrial requires automatic occupant evacuation alarm
Overlooking Operational Hazards	Human error and maintenance failures cause fires	Implement training, maintenance schedules, and supervision

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◆ Section 10: Conclusion

Industrial occupancies require a fire safety strategy that reflects their unique characteristics—active operations, potential for high-hazard contents, and the critical importance of proper hazard classification and protection. By providing adequate egress, installing appropriate fire alarm and suppression systems, and managing hazardous areas in accordance with code requirements, you can design facilities that protect occupants and property.

Take Action Today:

1. Confirm the occupancy classification (industrial, not storage).
2. Determine the hazard of contents (low, ordinary, or high hazard).
3. Provide two remote means of egress from each story, with at least one true exit directly reachable from each story (unless single exit conditions are met).
4. Verify travel distance limits based on hazard and sprinkler status.
5. Protect hazardous areas with 1-hour enclosures or sprinkler protection.
6. Install fire alarm systems where required based on aggregate floor area and hazard.
7. Ensure high-hazard occupancies automatically initiate occupant evacuation alarm.
8. Do not use positive alarm sequence in high-hazard industrial occupancies.
9. Always verify local amendments and the adopted NFPA 101 edition with your AHJ.

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Continue Reading from Our Series:

• Read more about: How to Design Fire Safety for Storage Occupancies
• Learn more: How to Design Fire Safety for Business Occupancies
• Related guide: How to Choose Fire-Resistant Building Materials

IMPORTANT DISCLAIMER: This guide is based on the base text of NFPA 101, Chapter 42 (Storage Occupancies). However, NFPA 101 requirements vary significantly by edition (2018, 2021, 2024) and are frequently amended by state and local jurisdictions. Local amendments and the edition adopted by your Authority Having Jurisdiction (AHJ) always control. This guide is a starting point only—always verify the specific requirements applicable to your project with your local AHJ. Section numbers cited in this guide are based on the 2018 edition of NFPA 101; verify section numbers with the edition adopted in your jurisdiction.

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Storage occupancies encompass a wide range of facilities, from small warehouses and distribution centers to large high-piled storage racks and parking garages. These spaces are characterized by the presence of relatively small numbers of people in proportion to the total floor area, which significantly influences their fire safety requirements. NFPA 101 defines a storage occupancy as “an occupancy used primarily for the storage or sheltering of goods, merchandise, products, vehicles, or animals”. This includes warehouses, cold storage, parking structures, barns, and freight terminals. NFPA 101 addresses storage occupancies in Chapter 42 (for both new and existing). This guide covers the essential fire safety requirements for storage occupancies.

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◆ Section 1: Defining Storage Occupancies

NFPA 101 defines a storage occupancy as “an occupancy used primarily for the storage or sheltering of goods, merchandise, products, vehicles, or animals”. This definition is intentionally broad, encompassing a wide range of commercial and industrial storage uses.

Occupancy Type	Description	NFPA 101 Chapter
Storage Occupancy	Storage or sheltering of goods, merchandise, products, vehicles, or animals	Chapter 42
Industrial Occupancy	Manufacturing, processing, and assembly	Chapter 40
Mercantile Occupancy	Display and sale of merchandise	Chapter 36/37

Examples of Storage Occupancies:

Type	Examples
Warehouses	Distribution centers, fulfillment centers
Cold Storage	Refrigerated warehouses
Parking Structures	Vehicle storage (not repair)
Other	Barns, freight terminals, grain elevators

Important Distinction: Areas used for packaging, labeling, sorting, special handling, or other operations requiring an occupant load greater than that normally contemplated for storage shall be classified as industrial occupancies.

Pro Tip: A warehouse is classified as a storage occupancy, not an industrial occupancy, per NFPA 101 A.3.3.190.15 .

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◆ Section 2: Occupant Load

One of the unique aspects of storage occupancies is that base NFPA 101 has no calculated occupant load factor for storage use within a storage occupancy. Table 7.3.1.2 lists the factor as “NA” (Not Applicable), with a footnote clarifying that “the occupant load is the maximum probable number of occupants present at any time”.

Condition	Requirement
General Storage Areas	No calculated occupant load factor; the AHJ determines the number of occupants based on actual expected occupancy.
Incidental Industrial Use Areas	Areas used for packaging, labeling, and sorting have a calculated occupant load based on 100 ft² (9.3 m²) per person.
Parking Garages	Special attention needed; occupancy can be high at peak times.

Important Jurisdictional Note: Some jurisdictions amend this provision. For example, a Maryland county amendment substitutes “500 gross ft²/person” in place of “NA” for storage occupancies. Always verify with your local AHJ to determine whether a calculated occupant load factor applies in your jurisdiction.

Pro Tip: Because of the typical low density of a storage occupancy, egress capacity is rarely a problem if the minimum number and size of exits along with maximum travel distance limitations are met .

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◆ Section 3: Means of Egress

A. Number of Exits

At least two separate means of egress must be available from every floor in a storage structure. In smaller buildings, a single exit is permitted under specific conditions.

Requirement	Details	Code Reference
Minimum Exits	Two separate exits from every story or section	NFPA 101, 42.2.4.1
Single Exit	Permitted in ordinary hazard storage only where the exit can be reached within the permitted common path of travel	NFPA 101, 42.2.4.1(2)

Conditions for Single Exit:

In ordinary hazard storage occupancies, a single means of egress is permitted from any story or section where the exit can be reached within the permitted common path of travel, provided that:

1. The building is not classified as high-hazard (per Section 6.2.2.4) .
2. The single exit must be a door to the exterior, an enclosed exit stair, a horizontal exit, or an exit passageway directly available from each floor.

Important: A storage building with high-hazard contents (e.g., flammable liquids, combustible dusts) cannot use the single-exit allowance regardless of common path distance.

B. Exit Access and Travel Distances

Travel distance limitations for storage occupancies are based on the level of hazard of contents and whether the building is sprinklered.

Level of Protection	Low Hazard	Ordinary Hazard	High Hazard
Sprinklered	No limit	400 ft (122 m)	100 ft (30 m)
Not Sprinklered	No limit	200 ft (61 m)	75 ft (23 m)
Flammable/Combustible Liquids (NFPA 30)	N/A	N/A	150 ft (46 m)

C. Arrangement of Means of Egress (Table 42.2.5)

The arrangement of means of egress is governed by NFPA 101, Table 42.2.5, which sets limits for common path of travel and dead-end corridors. These are separate egress parameters and their limits may differ depending on the hazard of contents and sprinkler protection.

Level of Protection	Hazard of Contents	Common Path of Travel	Dead-End Corridor
Sprinklered	Ordinary Hazard	100 ft (30 m)	100 ft (30 m)
Sprinklered	High Hazard	100 ft (30 m)	Prohibited
Not Sprinklered	Ordinary Hazard	50 ft (15 m)	50 ft (15 m)
Not Sprinklered	High Hazard	50 ft (15 m)	Prohibited
Either	Low Hazard	No limit	No limit

Important Distinction: Common path of travel is the distance an occupant must travel before two separate paths to exits become available. Dead-end corridors are corridors from which an occupant must retrace their steps to reach an exit. While they share the same numeric limits in ordinary hazard storage, they are conceptually different requirements.

Critical Note on High-Hazard Dead-Ends: Dead-end corridors are prohibited in high-hazard storage occupancies, except as permitted by the narrow single-exit exception in NFPA 101, Section 7.11.4. This exception applies only where the room or space does not exceed 200 ft² (18.6 m²), has an occupant load not exceeding 3 persons, and the travel distance to the room door does not exceed25 ft (7,620 mm).

Local Amendment Example: Montgomery County, MD amends NFPA 101 Table 42.2.5 to replace “50” with “75” and “15” with “23” for Common Path of Travel for Ordinary Hazard Storage not protected by sprinklers.

D. Exit Remoteness

The separation between two exits must be at least one-half the length of the maximum overall diagonal dimension of the building area served. If the building is sprinklered, the separation may be reduced to one-third.

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◆ Section 4: Fire Alarm and Detection Systems

A. General Requirement (Base NFPA 101)

Fire alarm system requirements for storage occupancies are based on the hazard of contents and the aggregate floor area (NFPA 101, 42.3.4.1.2):

Condition	Fire Alarm System Requirement	Code Reference
Ordinary or High Hazard, ≤100,000 ft²	Not required (base NFPA 101)	NFPA 101, 42.3.4.1.2
Ordinary or High Hazard, >100,000 ft²	Required	NFPA 101, 42.3.4.1.2

Notification Requirement: Where a fire alarm system is installed or required, the system shall provide occupant notification in accordance with 9.6.3, or sound an audible and visible signal in a constantly attended location for the purposes of initiating emergency action (NFPA 101, 42.3.4.3). In high hazard storage occupancies, the required fire alarm system shall automatically initiate an occupant evacuation alarm signal in accordance with 9.6.3 (NFPA 101, 42.3.4.3.4).

Note on Local Amendments: Some jurisdictions adopt local amendments that modify the fire alarm thresholds for storage occupancies (e.g., changing the story count or floor area trigger). These amendments are not part of base NFPA 101 and should be verified separately with the local AHJ.

B. Detection and Suppression

Requirement	Details
Smoke Detection/Alarm System	Required in specific conditions
Sprinkler System	Required based on commodity classification and storage height (see Section 5)

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◆ Section 5: Automatic Sprinkler Systems and High-Piled Storage

A. Commodity Classification

Commodity classification is critical for determining sprinkler design and fire protection requirements. The classification considers three factors: (1) the product, (2) the packaging, and (3) the pallets used.

Class	Description
Class I	Noncombustible products in ordinary corrugated cartons
Class II	Class I products in slatted wooden crates, solid wood boxes, or similar combustible packaging
Class III	Wood, paper, natural fiber cloth, or Group C plastics products
Class IV	Class I, II, or III products containing Group A plastics in ordinary corrugated cartons; Group B plastics; free-flowing Group A plastics
High Hazard	Group A plastics stored over 5 feet in height

B. High-Piled Combustible Storage

The IFC defines high-piled storage as “storage of combustible materials in closely packed piles or combustible materials on pallets, in racks, or on shelves where the top of storage is greater than 12 feet in height”. Where required by the fire code official, high-piled combustible storage also includes certain high-hazard commodities where the top of storage is greater than 6 feet in height.

C. Sprinkler System Design

Requirement	Details
Commodity Classification	Determines the sprinkler design criteria (density and area)
Storage Height	Determines the required sprinkler design and head type
Aisle Width	Determines the required sprinkler design
In-Rack Sprinklers	May be required for certain storage configurations
ESFR Sprinkler Heads	Early Suppression Fast Response heads may be permitted

Pro Tip: NFPA 13 contains the requirements for Class I-IV commodities and applies the storage criteria to Group A plastics (high hazard commodities) when stored over 5 feet in height.

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◆ Section 6: Emergency Lighting and Illumination

Requirement	Details	Code Reference
Means of Egress Illumination	Required for exit and exit access (designated aisles, corridors, passageways)	NFPA 101, 42.2.8
Daylight Exception	Illumination may be provided by natural light (windows, skylights) if the building is occupied only during daylight hours and approved by AHJ	NFPA 101, 42.2.8.2
Emergency Lighting	Required in normally occupied storage occupancies	NFPA 101, 42.2.9
Emergency Lighting Exemption	Exempted for spaces occupied only during daylight hours with natural illumination	NFPA 101, 42.2.9
Duration	90 minutes	NFPA 101, 7.9
Illumination Level	10.8 lux average at start; 1.1 lux at floor level	NFPA 101, 7.9

Pro Tip: The exemption permits circuit arrangements that disconnect power from emergency lighting systems when the building is unoccupied. In many warehouses, power is turned off during periods when the building is unoccupied. This power disconnection serves fire prevention, energy conservation, and security purposes.

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◆ Section 7: Special Considerations

A. High-Piled Storage Plans

For high-piled combustible storage areas, a storage plan must be submitted for review and approval . The plan must include:

Element	Details
Letter of Intent	Detailed description of products, containers, pallets, packaging, storage methods, total storage area, maximum storage height, and aisle widths
Site Plan	Showing fire access lanes, fire hydrants, fire department connection, and fire sprinkler risers
Floor Plan	Showing locations and dimensions of the HPS area, location of racks, and access doors
Storage Height	Maximum desired/proposed storage height for each storage area
Rack Configuration	Number of tiers within each rack
Commodity Clearance	Clearance between top of storage and sprinkler deflector
Aisle Dimensions	Aisle dimensions between each storage array
Commodity Classification	Location and classification of different commodity classes
Sprinkler Design	Design density, area, K-factor, temperature rating, and spacing

B. Parking Garages

Parking garages require special attention. When repair operations are conducted within a parking garage, travel distances must meet the requirements for the industrial section (Chapter 40) of NFPA 101. If the repair operation area is separated by 2-hour fire-resistive construction, the industrial requirements will apply to only the part that is used for repair operations.

C. Lockups

Lockups in new storage occupancies shall comply with the requirements of 22.4.5 (Detention and Correctional Occupancies). Lockups in existing storage occupancies, other than approved existing lockups, shall comply with the requirements of 23.4.5.

D. Areas with High Hazards

Areas with high hazards shall comply with NFPA 101 Chapter 42 requirements. High hazards are those that are likely to burn with extreme rapidity or from which explosions are likely. Consider an Indoor Liquid Storeroom for such hazards .

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◆ Section 8: Design Checklist

Use this checklist to verify fire safety provisions in storage occupancy design:

Item	Status	Notes
Occupancy Classification	☐	Confirm storage occupancy (not industrial)
Occupant Load	☐	No calculated factor; AHJ determines based on actual occupancy
Two Remote Exits	☐	From each floor (unless single exit exception applies)
Single Exit Conditions	☐	Verify ordinary hazard, not high hazard, and exit type
Travel Distance	☐	200 ft / 400 ft (sprinklered) for ordinary hazard
Common Path of Travel	☐	50 ft / 100 ft (sprinklered) for ordinary hazard
Dead-End Corridors	☐	50 ft / 100 ft (sprinklered) for ordinary hazard; prohibited in high hazard
Exit Remoteness	☐	½ diagonal / ⅓ diagonal (sprinklered)
Fire Alarm System	☐	Not required for ≤100,000 ft² ordinary/high hazard
Sprinkler System	☐	Based on commodity classification and storage height
Emergency Lighting	☐	Required unless daylight-only exception applies
High-Piled Storage Plan	☐	Required for high-piled storage areas
Verify Local AHJ Requirements	☐	Local amendments and adopted edition control

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◆ Section 9: Common Mistakes and How to Avoid Them

Mistake	Why It’s a Problem	How to Fix
Misclassifying the Occupancy	Applying industrial requirements instead of storage	Confirm primary use is storage/sheltering
Assuming Occupant Load Factor	NFPA 101 has no calculated occupant load for storage	AHJ determines based on actual expected occupancy
Applying Single Exit Incorrectly	May allow single exit in high-hazard storage	Single exit only permitted in ordinary hazard storage with exit type restrictions
Assuming High-Hazard Dead-Ends Allowed	Dead-ends are prohibited in high hazard	Verify Table 42.2.5; only narrow 7.11.4 exception applies
Ignoring Commodity Classification	Incorrect sprinkler design	Classify commodities as Class I-IV or High Hazard
Inadequate Travel Distance	Egress takes too long	Verify travel distance limits based on hazard and sprinkler status
No High-Piled Storage Plan	Cannot demonstrate compliance	Submit storage plan for review and approval
Blocked Exits	Storage obstructs egress	Enforce no-storage policies in egress paths
Overlooking Emergency Lighting Exemption	May over-design for daylight-only warehouses	Verify if daylight exception applies
Mixing Local Amendments with Base Code	May misapply local requirements	Clearly distinguish base NFPA 101 from local amendments

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◆ Section 10: Conclusion

Storage occupancies require a fire safety strategy that reflects their unique characteristics—low occupant density, high fuel loads, and the critical importance of proper commodity classification and sprinkler design. By providing adequate egress, installing appropriate fire alarm and suppression systems, and managing high-piled storage in accordance with code requirements, you can design facilities that protect occupants and property.

Take Action Today:

1. Confirm the occupancy classification (storage, not industrial) .
2. Determine the hazard of contents (low, ordinary, or high hazard) .
3. Provide two remote means of egress from each floor (unless single exit conditions are met).
4. Verify travel distance limits based on hazard and sprinkler status.
5. Verify common path and dead-end limits using Table 42.2.5.
6. Classify commodities accurately for sprinkler design.
7. Submit a high-piled storage plan for review and approval.
8. Verify emergency lighting requirements and applicable exemptions.
9. Always verify local amendments and the adopted NFPA 101 edition with your AHJ.

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Continue Reading from Our Series:

• Read more about: How to Design Fire Safety for Business Occupancies
• Learn more: How to Design Fire Safety for Mercantile Occupancies
• Related guide: How to Design Fire Safety for Covered Mall Buildings