NFPA 257: Standard on Fire Test for Window and Glass Block Assemblies

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2012 NFPA 257
Prior Years Prior Editions of NFPA 257

Make sure windows and glass blocks don't contribute to fire spread by following the testing provisions in the 2012 NFPA 257.

NFPA 257: Standard on Fire Test for Window and Glass Block Assemblies prescribes fire and hose stream test procedures that apply to fire window assemblies -- including window, glass block, and other light-transmitting assemblies -- intended for use in window openings to retard the spread of fire through openings in fire-resistive walls. It establishes controls of the fire test as well as performance criteria and results for reporting procedures.

NFPA 257 is referenced by NFPA 101®: Life Safety Code® when being used to set up a window fire resistance rating in a fire rated wall assembly. Essential for testing laboratories and manufacturers, the 2012 Standard edition contains updated references to ensure you're working with the latest information. (Softbound, Approx. 13 pp., 2012)

NFPA® 257 Standard on Fire Test for Window and Glass Block Assemblies 2012 Edition

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