Performance-Based Fire Protection Design
What is Performance-Based Design?
Performance-based design (PBD) is an engineering approach that uses fire modeling, egress analysis, and scientific principles to demonstrate that a building achieves an equivalent or higher level of fire safety compared to prescriptive code requirements. This approach is particularly valuable for architecturally unique buildings where strict code compliance may be impractical or overly restrictive.
When is Performance-Based Design Used?
- Open-concept atriums - Where standard smoke barriers are not feasible
- Extended travel distances - When building layouts exceed prescriptive exit travel distances
- Reduced fire ratings - Demonstrating equivalent protection with alternative assemblies
- Unique occupancies - Buildings with uses not addressed by prescriptive codes
- Historical buildings - Where code compliance would compromise historical character
- Cost optimization - Demonstrating that alternative solutions provide equivalent safety at reduced cost
Our PBD Process
EB Life Safety's performance-based design process includes defining fire safety goals and objectives, identifying fire scenarios and design fires, conducting fire modeling using FDS (Fire Dynamics Simulator), performing egress analysis using Pathfinder simulation software, evaluating tenability criteria (visibility, temperature, toxicity), and preparing comprehensive engineering reports for AHJ review.
Tools We Use
- FDS (Fire Dynamics Simulator) - Computational fluid dynamics model for fire-driven fluid flow
- Pathfinder - Agent-based evacuation simulation software
- PyroSim - Graphical interface for FDS fire modeling
- Smokeview - Visualization tool for FDS output
Frequently Asked Questions
Does performance-based design reduce safety?
No. Performance-based design must demonstrate an equivalent or higher level of safety compared to prescriptive code requirements. The engineering analysis quantitatively proves that occupants are protected.
Will the AHJ accept performance-based design?
Most Florida AHJs accept performance-based design when supported by proper engineering documentation. Our team has extensive experience working with AHJs across Florida to gain acceptance of PBD solutions.
How long does a PBD analysis take?
Depending on complexity, a performance-based design analysis typically takes 4-8 weeks including fire modeling, egress analysis, and report preparation.