Fire growth rate

Definition

Rate at which the heat release rate of a fire increases during the growth phase.

Fire growth rate describes the rate at which the heat release rate (HRR) of a fire increases during the early stages of fire development. In fire safety engineering, simplified fire growth models such as the t² fire are commonly used to represent different growth regimes, typically classified as slow, medium, fast and ultra-fast.

Related Concepts

• Design fire
• Fire curve
• Heat Release Rate (HRR)

Tools

• Fire Curve Database

Technical Notes

• No related technical notes.

References

• NFPA 72
• SFPE Handbook

Knowledge Graph