NFPA 253: Standard Method of Test for Critical Radiant Flux of Floor Covering Systems Using a Radiant Heat Energy Source
Current Edition: 2011 Next Edition: 2015

Alerts: Receive e-mail updates on this document Manage my alerts

Alert Me
Please confirm you would like to be alerted the next time we post new information about document .
Alerts will be sent to the e-mail address on your user profile:

Thank you for signing up for alerts.

Committee members: Sign-in to view your documents.
Buy This Edition
NFPA 253:
2011 Edition
Item #: 25311
List: from $36.50
Member: from $32.85

Edition to display:
What is NFPA 253?
NFPA 253: Document Scope
1-1.1 This fire test response standard describes a procedure for measuring critical radiant flux behavior of horizontally mounted floor covering systems exposed to a flaming ignition source in a graded, radiant heat energy environment within a test chamber. The specimen can be mounted over underlayment or over a simulated concrete structural floor, bonded to a simulated structural floor, or otherwise mounted in a typical and representative way. 1-1.2 This fire test response standard measures the critical radiant flux at flameout. It provides a basis for estimating one aspect of fire exposure behavior for floor covering systems. The imposed radiant flux simulates the thermal radiation levels likely to impinge on the floors of a building whose upper surfaces are heated by flames or hot gases, or both, from a fully developed fire in an adjacent room or compartment. The standard was developed to simulate an important fire exposure component in fires that develop in corridors or exitways of buildings and is not intended for routine use in estimating flame spread behavior of floor covering in building areas other than corridors or exitways. Appendix F provides information on the proper application and interpretation of the results of this test. 1-1.3 This standard shall be used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions and shall not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, the results of the test shall be permitted to be used as elements of a fire hazard assessment or a fire risk assessment that takes into account all factors that are pertinent to an assessment of the fire hazard or fire risk of a particular end use. 1-1.4 This standard does not purport to address all safety problems associated with its use. The user of this standard is responsible to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. Specific safety precautions are provided in Chapter 4.
This standard presents a method for evaluating critical radiant flux of floor coverings in corridors or exitways, thus providing a basis for estimating one aspect of the fire exposure behavior of floor covering systems. Official document scope
What does NFPA 253 address?
This fire test response standard describes a procedure for measuring the critical radiant flux of horizontally mounted floor covering systems exposed to a flaming ignition source in a graded, radiant heat energy environment within a test chamber. Annexes discuss how to calibrate an apparatus, mounting methods, sample data logs, application and interpretation of results, safety precautions, and more.Table Of Contents.
NFPA 253, 2011 Edition: Archived Revision Information
Report on Proposals (ROP)
Report on Proposals (ROP)
Proposals can be submitted for text to be amended or included in NFPA Codes and Standards. Following the Call for Proposals period, the responsible Technical Committee or Panel holds a meeting to consider and act on all submitted proposals. The committee or panel may also develop its own proposals. A document known as the Report on Proposals (ROP) is prepared containing all the Public Proposals, Technical Committees' action on each Proposal, as well as all Committee-generated proposals. The ROP for the document in question is submitted for the approval of the responsible TC or Panel by a formal written ballot. If the ROP does not receive approval via written ballot in accordance with NFPA rules, the Report is returned to the committee for further consideration and is not published. If the necessary approval is received, the ROP is published in a compilation of Reports on Proposals issued by NFPA twice yearly for public review and comment, and the process continues to the next step. The ROP is published and widely distributed and anyone may download or request a copy.
ROP Meeting Notice
ROP Meeting Notice
Note: Please contact the appropriate staff liaison (listed on the Technical Committee tab) for information on attending an NFPA Technical Committee meeting as a guest. Read NFPA"s Regulations Governing Committee Projects (Section 3.3.3.3) for further information.
ROP Meeting Agenda
ROP Meeting Minutes
ROP Ballot
ROP Ballot
The ballots posted on this page are for public information only. Voting on ballots is permitted by committee members only. See NFPA Regulations Governing Committee Projects, Section 3.3.4.
Ballot (PDF, 206 KB)
Ballot Circulation (PDF, 96 KB)
Ballot Final (PDF, 221 KB)
Report on Comments (ROC)
Report on Comments (ROC)
Once the ROP becomes available, there is a 60-day comment period during which time anyone may submit a public comment on the proposed changes documented in the ROP. The committee or panel reconvenes at the end of the comment period and acts on all public comments. This committee or panel may also develop its own comments. As before, approval obtained via written ballot in accordance with NFPA's Regulations is required on all committee and panel actions. All of this information is compiled into a second Report, called the Report on Comments (ROC), which like the ROP, is published and made available for public review for a seven-week period.
Report on Comments (ROC) (PDF, 600 KB)
ROC Meeting Notice
ROC Meeting Notice
Note: Please contact the appropriate staff liaison (listed on the Technical Committee tab) for information on attending an NFPA Technical Committee meeting as a guest. Read NFPA"s Regulations Governing Committee Projects (Section 3.3.3.3) for further information.
ROC Meeting Agenda
ROC Meeting Minutes
ROC Ballot
ROC Ballot
The ballots posted on this page are for public information only. Voting on ballots is permitted by committee members only. See NFPA Regulations Governing Committee Projects, Section 3.3.4.
Ballot (PDF, 265 KB)
Ballot Circulation (PDF, 57 KB)
Ballot Final (PDF, 330 KB)
Motions Committee Report (NITMAM)
Motions Committee Report (NITMAM)
Proposed NFPA documents will be presented for action at the applicable Annual (June) Association Technical Meeting only when proper Amending Motions (Notice of Intent to Make a Motion - NITMAM) have been certified by the Motions Committee of the Standards Council as a proper amending motion. Documents that receive no motions will not be presented at the meeting and instead will be forwarded directly to the NFPA Standards Council for action on issuance. More about the codes and standards making process including NITMAM.
No NITMAMs
Association Technical Meeting
Consent document not presented at Association Technical Meeting. Document issuance: 12/14/2010
Archived revision information
NFPA 253, 2011 Edition: Archived Revision Information
View archived proposals, comments and other records related to the development of this edition.
Read the archived revision information
View the document online (read only)

Find a code or standard

Related Products
National Fire Codes Subscription Service All Access
Item #: NFCSSTERHB
List: from $1,295.00
Member: from $1,165.50




New U.S./Canadian Membership
Item #: MBRR
List: from $165.00
Member: from $165.00

Bottom blue line

Free access     NEC      Sparky the Fire Dog        NFPA Conference & Expo         NFPA Journal         Sprinklers       Wildland fires