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BS EN 15725:2023

BS EN 15725:2023

$142.49

Extended application on the fire performance of construction products and building elements: Principle of EXAP standards and EXAP reports

Published By Publication Date Number of Pages
BSI 2023 30
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This document gives the procedures for preparing standards and reports following the extended application (EXAP) process using the results of reaction to fire tests, fire resistance tests (including other performance characteristics e.g. smoke leakage/control and/or durability of self-closing), and external fire exposure to roof tests undertaken for fire classification of products and product families in accordance with the various parts of EN 13501. EXAP rules limit the number of tests required by implementing methods to determine the fire classification of a range of products (e.g. range of product, larger dimensions etc.) and EXAP rules form a standardized technical agreement on the parameter changes. The fundamental concept of EXAP is the development of safe methods that provide extensions to the scope of the tested product while maintaining the required classification for the product. Test reports constitute the basis of an EXAP report. This document makes reference to ‘extended application standards’ throughout; wherever this term is used it refers to either a standard prepared by CEN/TC 127 ‘Fire safety in buildings’ or the relevant product standard which includes information on extended application. The European system currently permits extended application rules to be included in technical specifications. CEN Technical Committees and EOTA Working groups producing these rules are asked to seek the guidance of CEN/TC 127 to ensure that their rules comply with standards prepared by CEN/TC 127. In cases where extended application rules in harmonized EN product standards and ETAs do not comply with standards prepared by CEN/TC 127 the CEN BT are informed. This document does not cover the incorporation of the product into the construction works that is justified by national rules. Expert judgements (i.e. an opinion that is not considered/covered by an EXAP standard and only based on the experience of one individual) do not form part of this process.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
3 Terms and definitions
10 4 Developing extended application standards
4.1 General
11 4.2 Minimum content of an EXAP standard
4.2.1 General
4.2.2 Scope
4.2.3 Normative references
4.2.4 Terms and definitions
4.2.5 Technical justification on which the EXAP rule is based
4.2.6 Evidence for supporting EXAP rules
12 4.2.7 Parameters / factor and rules (described in other parts of the standard)
4.2.8 Limitation
4.2.9 Combination of extended application rules
4.2.10 Annex
5 Extended application reports – Role of extended application in the classification process
13 6 Principles of establishing the field of application
6.1 General
6.2 Direct field of application
6.2.1 Reaction to fire
14 6.2.2 Fire resistance and/or smoke control
6.2.3 External fire exposure to roofs
6.3 Extended field of application
6.3.1 General principles
6.3.2 Reaction to fire
15 6.3.3 Fire resistance and/or smoke control
6.3.3.1 General
6.3.3.2 Variations considered in the extended application standards
16 6.3.4 External fire exposure to roofs
6.4 Combination of parameter variations
6.5 Procedure for undertaking extended application
18 7 Information to be included in an extended application report
19 Annex A (informative)Format for an extended application report — Reaction to fire
22 Annex B (informative)Format for an extended application report — Fire resistance
25 Annex C (informative)Format for an extended application report — External fire exposure to roofs

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BS EN 15725:2023
$142.49