NFPA 257:2022
Current
The latest, up-to-date edition.
Standard on Fire Test for Window and Glass Block Assemblies
04-06-2021
Chapter 1 Administration 1.1 Scope. 1.2 Purpose. 1.3 Units. Chapter 2 Referenced Publications 2.1 General. 2.2 NFPA Publications. (Reserved) 2.3 Other Publications. 2.4 References for Extracts in Mandatory Sections. Chapter 3 Definitions 3.1 General. 3.2 NFPA Official Definitions. 3.3 General Definitions. Chapter 4 Control of Fire Test 4.1 Temperature–Time Curve. 4.2 Furnace Temperatures. 4.3 Furnace Pressure. Chapter 5 Fire Window Assembly 5.1 Construction and Size. 5.2 Mounting. 5.3 Test Wall. Chapter 6 Conduct of Tests 6.1 Fire Test. 6.2 Hose Stream Test. Chapter 7 Performance Criteria 7.1 Fire Test. 7.2 Hose Stream Test. Chapter 8 Report 8.1 Results.Annex A Explanatory Material Annex B Background and Development Annex C Radiant and Total Heat Flux Annex D Informational References
This standard prescribes standardized fire and hose stream test procedures that apply to the evaluation of fire window assemblies, including windows, glass block, and other light-transmitting assemblies intended to retard the spread of fire through openings in fire resistance–rated walls.
| DocumentType |
Standard
|
| PublisherName |
National Fire Protection Association
|
| Status |
Current
|
| Supersedes |
| NFPA 76:2024 | Standard for the Fire Protection of Telecommunications Facilities |
| ANSI/NAAMM HMMA 863:2024 | GUIDE SPECIFICATIONS FOR DETENTION SECURITY HOLLOW METAL DOORS AND FRAMES |
| NFPA 221:2024 | Standard for High Challenge Fire Walls, Fire Walls, and Fire Barrier Walls |
| NFPA 556:2024 | Guide on Methods for Evaluating Fire Hazard to Occupants of Passenger Road Vehicles |
| NFPA 80:2025 | Standard for Fire Doors and Other Opening Protectives |
| NFPA 101A:2025 | Guide on Alternative Approaches to Life Safety |
| ASTM E 2226 : 2015 : REV B : R2019 | Standard Practice for Application of Hose Stream |
| NFPA 80 : 2019 | Standard for Fire Doors and Other Opening Protectives |
| NFPA 221:2021 | Standard for High Challenge Fire Walls, Fire Walls, and Fire Barrier Walls |
| NFPA 101:2021 | Life Safety Code |