Nfpa Fire Protection Handbook 21st Edition -

The short answer: Anyone responsible for fire safety. However, specific professionals will find it indispensable:

If you own the 20th Edition, is the upgrade worth it? Nfpa Fire Protection Handbook 21st Edition

No book is perfect. Some users of the 21st Edition have noted that while the lithium-ion and mass timber sections are new, some legacy chapters (like mine fire protection) were shortened. Furthermore, at nearly 20 pounds for the set, it is heavy. However, these are minor quibbles. The reduction of outdated industrial processes was a necessary editorial decision to make room for 21st-century hazards. The short answer: Anyone responsible for fire safety

Also, remember that the Handbook is a snapshot in time. Even as you read this, the NFPA codes are on a 3-to-5-year revision cycle. The 21st Edition does not contain codes that will be published in 2027. It provides the foundational science that changes slowly, while codes change often. If you own the 20th Edition, is the upgrade worth it

This is one of the most heavily referenced sections for engineers.