Skip to main content

Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock () or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Fire Flow

Fire Grading

Fire Ground

Search our library’s catalog with this term

Procedure of assigning grades of fire resistance.

Narrower Terms:

Search again