Standard Guide for Evaluating the Predictive Capability of Deterministic Fire Models

SCOPE
1.1 This guide provides a methodology for evaluating the predictive capabilities of a fire model for a specific use. The intent is to cover the whole range of deterministic numerical models which might be used in evaluating the effects of fires in and on structures.
1.2 The methodology is presented in terms of four areas of evaluation:
1.2.1 Defining the model and scenarios for which the evaluation is to be conducted,
1.2.2 Verifying the appropriateness of the theoretical basis and assumptions used in the model,
1.2.3 Verifying the mathematical and numerical robustness of the model, and
1.2.4 Quantifying the uncertainty and accuracy of the model results in predicting of the course of events in similar fire scenarios.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.4 This guide assumes understanding of the use and limitations of the model under analysis as detailed in Guide E 1895.
1.5 This fire standard cannot be used to provide quantitative measures.

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Historical
Publication Date
31-Dec-2004
Technical Committee
Current Stage
Ref Project

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ASTM E1355-05 - Standard Guide for Evaluating the Predictive Capability of Deterministic Fire Models
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Designation:E1355–05
Standard Guide for
Evaluating the Predictive Capability of Deterministic Fire
1
Models
This standard is issued under the fixed designation E 1355; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope E 1895 Guide for Determining Uses and Limitations of
Deterministic Fire Models
1.1 This guide provides a methodology for evaluating the
2.2 International Standards Organization Standards:
predictive capabilities of a fire model for a specific use. The
3
Guide to the Expression of Uncertainty in Measurement
intent is to cover the whole range of deterministic numerical
models which might be used in evaluating the effects of fires in
3. Terminology
and on structures.
3.1 Definitions: For definitions of terms used in this guide
1.2 The methodology is presented in terms of four areas of
and associated with fire issues, refer to terminology contained
evaluation:
in Terminology E 176 and ISO 13943. In case of conflict, the
1.2.1 Defining the model and scenarios for which the
definitions given in Terminology E 176 shall prevail.
evaluation is to be conducted,
3.2 Definitions of Terms Specific to This Standard:
1.2.2 Verifying the appropriateness of the theoretical basis
3.2.1 model evaluation—the process of quantifying the
and assumptions used in the model,
accuracy of chosen results from a model when applied for a
1.2.3 Verifying the mathematical and numerical robustness
specific use.
of the model, and
3.2.2 model validation—the process of determining the
1.2.4 Quantifyingtheuncertaintyandaccuracyofthemodel
degree to which a calculation method is an accurate represen-
results in predicting of the course of events in similar fire
tation of the real world from the perspective of the intended
scenarios.
uses of the calculation method.
1.3 This standard does not purport to address all of the
3.2.2.1 Discussion—The fundamental strategy of validation
safety concerns, if any, associated with its use. It is the
is the identification and quantification of error and uncertainty
responsibility of the user of this standard to establish appro-
in the conceptual and computational models with respect to
priate safety and health practices and determine the applica-
intended uses.
bility of regulatory limitations prior to use.
3.2.3 model verification—the process of determining that
1.4 This guide assumes understanding of the use and limi-
the implementation of a calculation method accurately repre-
tations of the model under analysis as detailed in Guide
sents the developer’s conceptual description of the calculation
E 1895.
method and the solution to the calculation method.
1.5 This fire standard cannot be used to provide quantitative
3.2.3.1 Discussion—The fundamental strategy of verifica-
measures.
tion of computational models is the identification and quanti-
2. Referenced Documents fication of error in the computational model and its solution.
2 3.2.4 The precision of a model refers to the deterministic
2.1 ASTM Standards:
capability of a model and its repeatability.
E 176 Terminology of Fire Standards
3.2.5 The accuracy refers to how well the model replicates
E 603 Guide for Room Fire Experiments
the evolution of an actual fire.
E 1472 GuideforDocumentingComputerSoftwareforFire
Models
4. Summary of Guide
E 1591 Guide for Data for Fire Models
4.1 A recommended process for evaluating the predictive
capability of fire models is described. This process includes a
1
brief description of the model and the scenarios for which
ThisguideisunderthejurisdictionofASTMCommitteeE05onFireStandards
and is the direct responsibility of Subcommittee E05.33 on Fire Safety Engineering. evaluation is sought. Then, methodologies for conducting an
Current edition approved Jan. 1, 2005. Published February 2005. Originally
analysis to quantify the sensitivity of model predictions to
approved in 1990. Last previous edition approved in 2004 as E 1355 – 04a.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
3
Standards volume information, refer to the standard’s Document Summary page on Available from American National Standards Institute, 11 West 42nd Street,
the ASTM website. 13th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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E1355–05
variousuncertainfactorsarepresented,andseveralalternatives 6. General Methodology
for evaluating the accuracy of the predictions of the model are
6.1 The meth
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