SIST EN 15254-4:2019
(Main)Extended application of results from fire resistance tests - Non-loadbearing walls - Part 4: Glazed constructions
Extended application of results from fire resistance tests - Non-loadbearing walls - Part 4: Glazed constructions
This European Standard provides guidance and, where appropriate, defines procedures for variations of certain parameters and factors associated with the design of fire resistant glazed elements which have been tested in accordance with EN 1364-1, and classified according to EN 13501-2.
Extended application of fire resistant glazed elements shall be based on test evidence.
This standard only applies to vertically installed fire resistant glazed elements.
This standard does not apply to doorsets and openable windows according to EN 1634-1.
Glass block assemblies and paver units and channel-shaped glass as defined in EN 1051-1 and EN 572-7 are excluded. There is currently insufficient information available to enable rules for extended application to be developed for these products.
NOTE Some partition walls use a combination of fire resistant glass, non-translucent and other opaque products. The extended application in this case only covers the glass when it replaces these products - see clause 8.2.
Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen - Nichttragende Wände - Teil 4: Verglaste Konstruktionen
Dieses Dokument gibt eine Anleitung und definiert, wo zutreffend, Verfahren für Änderungen von bestimmten Parametern und Faktoren, die mit der Ausführung von feuerwiderstandsfähigen verglasten Bauteilen in Verbindung stehen, die nach EN 1364-1:2015 geprüft und nach EN 13501-2 klassifiziert wurden.
Erweiterte Anwendungsbereiche von feuerwiderstandsfähigen verglasten Bauteilen beruhen auf Prüfdaten.
Diese Norm bezieht sich nur auf vertikal eingebaute feuerwiderstandsfähige verglaste Bauteile.
Diese Norm gilt nicht für Türen und zu öffnende Fenster nach EN 1634-1 und gilt nicht für Vorhang-fassaden - Gesamtausführung oder Vorhangfassaden - Teilausführung nach EN 1364-3 und EN 1364-4.
Bausätze aus Glasbausteinen und Betongläsern sowie Profilbaugläser, wie in EN 1051-1 und EN 572-7 definiert, sind ausgeschlossen. Hierzu liegen gegenwärtig keine ausreichenden Informationen vor, um Regeln für den erweiterten Anwendungsbereich für diese Produkte zu erstellen.
Extension du champ d'application des résultats des essais de résistance au feu - Éléments non-porteurs - Partie 4: Constructions vitrées
Le présent document fournit des conseils et, le cas échéant, définit des procédures pour les variations de certains paramètres et facteurs liés à la conception d’éléments vitrés résistant au feu qui ont été soumis à essai conformément à l’EN 1364‐1:2015 et classés conformément à l’EN 13501‐2.
L’application étendue d’éléments vitrés résistant au feu est basée sur une preuve obtenue par des essais.
La présente norme s’applique uniquement aux éléments vitrés résistant au feu installés verticalement.
La présente norme ne s’applique pas aux blocs‐portes et aux fenêtres ouvrantes conformes à l’EN 1634‐1, ni aux façades rideaux - configuration en grandeur réelle ou configuration partielle - conformes à l’EN 1364‐3 et à l’EN 1364‐4.
Les ensembles de blocs de verre, les unités de pavage et le verre profilé en U, tels que définis dans l’EN 1051‐1 et l’EN 572‐7, sont exclus. Les informations disponibles actuellement sont insuffisantes pour permettre de développer des règles relatives aux applications étendues pour ces produits.
Razširjena uporaba rezultatov preskusov požarne odpornosti - Nenosilne stene - 4. del: Zastekljena konstrukcija
Ta evropski standard zagotavlja smernice in, kjer je to primerno, določa postopke za spremembe nekaterih parametrov in dejavnikov, povezanih z načrtovanjem požarno odpornih zastekljenih elementov, ki so bili preskušeni v skladu s standardom EN 1364-1 in razvrščeni v skladu s standardom EN 13501-2.
Razširjeno uporabo požarno odpornih zastekljenih elementov je treba zasnovati na preskusnih dokazih.
Ta standard se uporablja le za vertikalno nameščene požarno odporne zastekljene elemente.
Ta standard se ne uporablja za vrata in okna, ki se odpirajo, v skladu s standardom EN 1634-1.
Stekleni bloki in tlakovne enote ter steklo v obliki kanala, kot je opredeljeno v standardih EN 1051-1 in EN 572-7, niso zajeti v tem dokumentu. Trenutno ni na voljo dovolj podatkov, ki bi omogočili oblikovanje pravil za razširjeno uporabo teh izdelkov.
OPOMBA: Nekatere predelne stene uporabljajo kombinacijo požarno odpornega stekla, neprepustnih in drugih neprozornih izdelkov. Razširjena uporaba v tem primeru zajema le steklo, ko nadomešča te izdelke (glej točko 8.2).
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Razširjena uporaba rezultatov preskusov požarne odpornosti - Nenosilne stene - 4. del: Zastekljena konstrukcijaErweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen - Nichttragende Wände - Teil 4: Verglaste KonstruktionenExtension du champ d'application des résultats des essais de résistance au feu - Éléments non-porteurs - Partie 4: Constructions vitréesExtended application of results from fire resistance tests - Non-loadbearing walls - Part 4: Glazed constructions91.060.10Stene. Predelne stene. FasadeWalls. Partitions. Facades13.220.50Požarna odpornost gradbenih materialov in elementovFire-resistance of building materials and elementsICS:Ta slovenski standard je istoveten z:EN 15254-4:2018SIST EN 15254-4:2019en,fr,de01-februar-2019SIST EN 15254-4:2019SLOVENSKI
STANDARDSIST EN 15254-4:2008+A1:20111DGRPHãþD
SIST EN 15254-4:2019
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15254-4
December
t r s z ICS
s uä t t rä w râ
{ sä r x rä s r Supersedes EN
s w t w væ vã t r r z ªA sã t r s sEnglish Version
Extended application of results from fire resistance tests æ Nonæloadbearing walls æ Part
vã Glazed constructions Extension du champ d 5application des résultats des essais de résistance au feu æ Éléments nonæporteurs æ Partie
v ã Constructions vitrées
Erweiterter Anwendungsbereich der Ergebnisse von Feuerwiderstandsprüfungen æ Nichttragende Wände æ Teil
vã Verglaste Konstruktionen This European Standard was approved by CEN on
t z September
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w t w væ vã t r s z ESIST EN 15254-4:2019
EN 15254-4:2018 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 5 4 Principles . 6 4.1 General principles . 6 4.2 Use of test evidence . 8 4.3 Combination of extended application. 9 5 Specific changes to the glazing system . 10 5.1 Exchange of the fire resistant glass . 10 5.2 Glass shapes . 14 5.3 Increase of glass dimensions . 14 5.4 Exchange of timber glazing beads . 14 5.5 Exchange of metal glazing beads . 15 5.6 Exchange of glazing system materials . 16 5.7 Bead surface coverings . 16 6 Specific changes to the framing system . 17 6.1 Exchange of frames . 17 6.2 Frame surface coverings. 18 7 Changes to the fire resistant glazed element . 19 7.1 Increase in dimensions and replication for fire resistant glazed elements with classification EW . 19 7.2 Decrease in dimensions for fire resistant glazed elements with classification EW . 20 Annex A (informative)
Examples for using this standard with regard to requested extended applications based on the reference test and pre-existing test data . 21 A.1 Examples for fire resistant glass with E Classification based on Table A.1 . 21 A.2 Examples for fire resistant glass with EW Classification, based on Table A.2 . 23 A.3 Examples for fire resistant glass with EI Classification based on Table A.3 . 25 Annex B (normative)
Radiation calculations . 27 B.1 Radiation calculations . 27 Bibliography . 30
SIST EN 15254-4:2019
EN 15254-4:2018 (E) 3 European foreword This document (EN 15254-4:2018) has been prepared by Technical Committee CEN/TC 127 “Fire safety in buildings”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2019, and conflicting national standards shall be withdrawn at the latest by June 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 15254-4:2008+A1:2011. Relevant changes compared to the previous edition EN 15254-4:2008+A1:2011 include: a) Replacement of the term “glass product group” by “glass product range”; b) Deletion of aspects now covered in the direct field of application (DIAP) of standard EN 1364-1:2015; c) Modification of exchange rules for fire resistant glass; d) Additional rule for decrease in dimensions for fire resistant glazed elements with classification EW; e) Editorial review of the standard. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 4 1 Scope This document provides guidance and, where appropriate, defines procedures for variations of certain parameters and factors associated with the design of fire resistant glazed elements which have been tested in accordance with EN 1364-1:2015, and classified according to EN 13501-2. Extended application of fire resistant glazed elements is based on test evidence. This standard only applies to vertically installed fire resistant glazed elements. This standard does not apply to door sets and openable windows according to EN 1634-1 and does not apply to curtain walling – full configuration or curtain walling – part configuration according to EN 1364-3 and EN 1364-4. Glass block assemblies and paver units and channel-shaped glass as defined in EN 1051-1 and EN 572-7 are excluded. There is currently insufficient information available to enable rules for extended application to be developed for these products. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 1279-1, Glass in building - Insulating glass units - Part 1: Generalities, system description, rules for substitution, tolerances and visual quality EN 1363-1, Fire resistance tests - Part 1: General Requirements EN 1363-2, Fire resistance tests - Part 2: Alternative and additional procedures EN 1364-1:2015, Fire resistance tests for non-loadbearing elements - Part 1: Walls EN 1995-1-2, Eurocode 5: Design of timber structures - Part 1-2: General - Structural fire design EN 13501-1, Fire classification of construction products and building elements - Part 1: Classification using data from reaction to fire tests EN 13501-2, Fire classification of construction products and building elements - Part 2: Classification using data from fire resistance tests, excluding ventilation services EN 15269-2, Extended application of test results for fire resistance and/or smoke control for door, shutter and openable window assemblies, including their elements of building hardware - Part 2: Fire resistance of hinged and pivoted steel doorsets EN 15269-3, Extended application of test results for fire resistance and/or smoke control for door, shutter and openable window assemblies, including their elements of building hardware - Part 3: Fire resistance of hinged and pivoted timber doorsets and openable timber framed windows EN 15269-5, Extended application of test results for fire resistance and/or smoke control for door, shutter and openable window assemblies, including their elements of building hardware - Part 5: Fire resistance of hinged and pivoted, metal framed, glazed doorsets and openable windows EN 15725, Extended application reports on the fire performance of construction products and building elements SIST EN 15254-4:2019
EN 15254-4:2018 (E) 5 EN ISO 12543-1, Glass in building - Laminated glass and laminated safety glass - Part 1: Definitions and description of component parts (ISO 12543-1) EN ISO 13943, Fire safety - Vocabulary (ISO 13943) 3 Terms and definitions For the purposes of this document the terms and definitions given in EN 13501-2, EN ISO 13943, EN ISO 12543-1, EN 1279-1 and EN 1364-1:2015, together with the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
IEC Electropedia: available at http://www.electropedia.org/
ISO Online browsing platform: available at http://www.iso.org/obp 3.1 charring rate rate at which a test specimen responds to heat evidenced by the formation of a carbonaceous residue
[SOURCE: ISO 17493:2016, 3.1, modified] Note 1 to entry Calculated as described in EN 1995-1-2. 3.2 resistance to fire classification resistance to fire classification of the glazed element with respect to integrity E, radiation W and insulation I in accordance with EN 13501-2 3.3 fire resistant glass glass glass product, (i.e. monolithic glass, laminated glass, insulating glass units), that when used in a glazed assembly, can have its performance determined and classified in accordance with EN 13501-2 Note 1 to entry The term “insulating” when used as an insulating glass unit according to EN 1279-1, should not be confused with the term “insulation” used in EN 13501-2 classification standard for fire resistant glazed element. 3.4 glass product range group of fire resistant glass (see 3.3) products, including products from one or more glass product families, e.g. monolithic glass, laminated glass, insulating glass units, defined and produced by one manufacturer for which the characteristic resistance to fire from any one product within the range is valid for all other products within this range Note 1 to entry: The glass product families are defined in the relevant product standards. 3.5 glazing system material all materials used to glaze the fire resistant glass into its frame, e.g. glazing strips, beads and bead fixings, setting blocks, gaskets and sealant
Note 1 to entry: See example in Figure 1. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 6 3.6 pre-existing test data test data generated by fire resistance tests that have been undertaken in accordance with former versions of European test standards 3.7 reference test fire resistance test in accordance with EN 1364-1:2015 and EN 1363-1, and where applicable EN 1363-2 which the extended application is based and the results, which are used as the main source of data for the extended application 3.8 framing system frame profile and fixing to the supporting construction Note 1 to entry: See example in Figure 1. 3.9 direct field of application of test results
outcome of a process (involving the application of defined rules) whereby a test result is deemed to be equally valid for variations in one or more of the product properties and/or intended end-use applications 3.10 extended field of application of test results
outcome of a process (involving the application of defined rules that may incorporate calculation procedures) that predicts, for a variation of a product property and/or its intended end-use application(s), a test result on the basis of one or more test results to the same test standard 4 Principles 4.1 General principles Extended application is a prediction of the expected fire resistance of fire resistant glazed elements. It may be based on interpolation between or extrapolation from test data. The fundamental consideration shall be that the fire resistant glazed element after extension would achieve the required fire performance if it were to be tested according to EN 1364-1:2015. The test results are applicable to similar constructions where one or more of the changes in the direct field of application in EN 1364-1:2015 and this standard are made, and it is the manufacturer’s responsibility that the construction continues to comply with the appropriate design code for its stiffness and stability. For test reports based on an edition of EN 1364-1 earlier than 2015, the direct field of application according to EN 1364-1:2015 may be applied. An increase in the classification time (e.g. from EI 30 min to EI 45 min) and/or changes to the fire performance classification (e.g. from E to EW) achieved in the reference test shall not be permitted by the application of the extended application rules. The only exception is detailed in 7.2. The overview regarding the relevant changeable parameters for extended application for fire resistant glazed elements is given in Table 1. Extended application reports shall be prepared according to EN 15725. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 7 Fire resistant glazed elements function as an integral system in which the individual components (glass, glazing system materials and framing system) are combined in such a way that they are effective in meeting the defined fire resistance criteria. However, in this document fire resistant glazed elements are separately characterized as the glazing system and the framing system (see example in Figure 1).
Key A glazing system B framing system 1 frame 2 metal anchor, screwed or bolted to the supporting construction (4) by a fixing anchor (3) 3 screw and fixing anchor 4 supporting construction 5 bead, screwed or clipped or clamped 6 bead fixing 7 glazing strip 8 glass 9 sealing or gasket 10 setting block Figure 1 — Example of a
framing system and glazing system SIST EN 15254-4:2019
EN 15254-4:2018 (E) 8 4.2 Use of test evidence 4.2.1 General The applicant for the extended application shall either be the “owner” (i.e. sponsor) of all reference tests and pre-existing test data being submitted for the extension, or have written permission from the owner to use the submitted test evidence. 4.2.2 Reference tests Reference tests are the basis for any changes. For some of the changes an overrun time is required in accordance with EN 1364-1:2015. A reference test may be submitted for either rectangular or non- rectangular panes. Reference tests provide the main source of data to determine the following: — resistance to fire classification (integrity E, integrity with radiation EW or integrity with insulation EI); — maximum pane area and dimensions for the fire resistant glass; — maximum dimensions of the fire resistant glazed element for each type of frame; — side exposed to fire. Reference tests may also provide other data to assist in determining the following: — permitted dimensional changes to the framing system; — changes to the glazing system. 4.2.3 Use of pre-existing test data Pre-existing test data may be used to support extended application, for instance to evaluate the influence of a particular component (e.g. glazing material) or aspect of the design (e.g. direction of fire exposure) or to establish which design variations affect the performance in the most or least onerous way. If this can be identified, then a reference test of the most onerous design may be undertaken. If the product achieves the required classification then the other less onerous variations will be covered. The relevant clauses state when pre-existing test data may be used. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 9 The following parameters and factors are considered in this standard: Table 1 — Parameters, Factors and Rules for glazing and framing systems and glazed elements Parameter Factor Rule see clauses: Glazing system
Change of glass type and thickness Replacement of glass within the same glass product range 5.1 Glass shapes Rules to glass shapes 5.2 Glass dimensions Increase in glass dimensions 5.3 Timber beads Exchange of timber species / bead fixing / bead shape and dimensions 5.4 Metal beads Exchange of bead fixing / bead shape and dimensions 5.5 Exchange of glazing materials Gaskets/glazing strips / setting blocks 5.6 Bead surface coverings Changes or adding surface coverings 5.7 Framing system
Exchange of frames (general) Type of material / junction types / edge cover 6.1.1 Timber frames Thickness / profile / timber type (charring rate / density) 6.1.2 Metal frames Frame materials / sections / thickness of chamber walls 6.1.3 Frame surface covering Changes or adding frame surface coverings 6.2 Fire resistant glazed element
Glazed element classified EW Increase in dimensions and replication for fire resistant glazed elements 7.1 Glazed element classified EW Decrease in dimensions for fire resistant glazed elements 7.2 4.3 Combination of extended application Within the extended application, a combination of changes is allowed (see Clauses 5, 6 and 7), provided that each change needed for these combinations can be substantiated by the supporting test evidence and/or pre-existing test data. An extended application that has already been granted can be used for a new extended application, provided it can be shown that the new changes do not contradict any of the principles used to establish the first extended application. For reasons of traceability, all supporting documents used for any extension should be referenced in the extended application report. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 10 5 Specific changes to the glazing system 5.1 Exchange of the fire resistant glass 5.1.1 General The exchange of the tested fire resistant glass, for another is allowed without additional test, provided that — both glass types are within the same glass product range, and — the replacing fire resistant glass has at least the same resistance to fire classification according to EN 13501-2 as the tested glass, and — the dimensions (width x height) of the replacing glass are within the maximum dimensions given by the field of direct application of the tested glass. There are three major types of fire resistant glass: — fire resistant glass consisting only of the glass component that provides the fire resistance (i.e. a monolithic or a laminated glass) indicated in Figure 2, type A; — an insulating glass unit (IGU) consisting of the component that provides the fire resistance, a monolithic counter pane with or without additional coatings on either side of the counter pane and an optional middle pane with or without coatings indicated in Figure 2, type B; — an IGU consisting of the component that provides the fire resistance, a laminated counter pane with or without additional coatings on either side of the counter pane and an optional middle pane with or without coatings, indicated in Figure 2, type C. NOTE
An IGU can consist of a glass component that provides the fire resistance and one or more cavities and counter panes.
Key A
fire resistant glass
B IGU with monolithic counter pane C
IGU with laminated counter pane
Figure 2 — Types of fire resistant glass SIST EN 15254-4:2019
EN 15254-4:2018 (E) 11 For classification E, EW and EI the following rules apply: The overall glass thickness may be increased provided that no fire protection interlayer and no individual glass component will be decreased. Specific rules are given in 5.1.2, 5.1.3 and 5.1.4. The thickness of individual non-fire protection components (e.g. polyvinyl butyral PVB, ethyl vinyl acetate EVA, polyurethane PU, polycarbonate PC) shall not
be increased. It may be decreased which results in a decrease of the overall glass thickness. Specific rules are given in 5.1.2, 5.1.3 and 5.1.4. For IGUs, the width of each cavity may be reduced. The width of each cavity may be increased by not more than a factor of 2. Specific rules are given in 5.1.2, 5.1.3 and 5.1.4. 5.1.2 Classification EI with the component that provides the fire resistance tested on the exposed face The following exchanges are allowed without additional test evidence: a) Test results of type A are equally applicable to type B and C but not vice versa. b) Test results of type B are equally applicable to type C and vice versa. c) Test results of type B without additional coatings are equally applicable to type B with additional coatings but not vice versa. d) Test results of type C without additional coatings are equally applicable to type C with additional coatings but not vice versa. e) Test results of type C without additional coatings are equally applicable to type B with additional coatings but not vice versa. f) Test results of type B without additional coatings are equally applicable to type C with additional coatings but not vice versa. g) Test results of IGUs obtained with one cavity are equally applicable for IGUs with 2 cavities. The total width of both cavities may not be increased by more than a factor of 2 based on the tested cavity width. h) Additional non-fire resistant glass panes may be added to the tested glass using non-fire protection interlayers with a thickness < 1mm. NOTE For details, see Figure 3. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 12
Key A
fire resistant glass
B IGU with monolithic counter pane C
IGU with laminated counter pane
1
Glass component that provides fire resistance 2 monolithic counter pane 3
monolithic, coated counter pane 4
laminated counter pane 5
laminated, coated counter pane Figure 3 — Exchange rules for classification EI with the component that provides the fire resistance tested on the exposed face 5.1.3 Classification EI with the component that provides the fire resistance tested on the unexposed face The following exchanges are allowed without additional test evidence: a) Test results of type C are equally applicable to type B but not vice versa. b) Test results of type B without additional coatings are equally applicable to type B with additional coatings and vice versa. c) Test results of type C without additional coatings are equally applicable to type C with additional coatings and vice versa. d) Test results of type C with additional coatings are equally applicable to type B without additional coatings but not vice versa. SIST EN 15254-4:2019
EN 15254-4:2018 (E) 13 e) Test results of type C without additional coatings are equally applicable to type B with additional coatings but not vice versa. f) Test results of IGUs obtained with two cavities are equally applicable for IGUs with 1 cavity - provided the cavity width is not increased from the total width of both cavities tested. g) Additional non-fire resistant glass panes may be added to the tested glass using non-fire protection interlayers with a thickness < 1 mm. NOTE For details, see Figure 4.
Key A
fire resistant glass
B IGU with monolithic counter pane C
IGU with laminated counter pane
1
glass component that provides fire resistance 2 monolithic counter pane 3
monolithic, coated counter pane 4
laminated counter pane 5
laminated, coated counter pane Figure 4 — Exchange rules for classification EI with the component that provides the fire resistance tested on the unexposed face SIST EN 15254-4:2019
EN 15254-4:2018 (E) 14 5.1.4 Classification E, EW No rules beyond those detailed in 5.1.1 are applicable. 5.2 Glass shapes Circular, triangular or 4 sided non-rectangular shapes may be cut from within the extended rectangular pane size defined by the field of direct application. All other non-rectangular shapes may only be cut from the tested rectangular pane size and shall not be extended further. 5.3 Increase of glass dimensions For individual panes where the E or EI classification is relevant, no extension to those defined by the field of direct application is allowed. For an individual pane where the EW classification is relevant, the individual pane size of a fire resistant glass may be increased according to the field of direct application rules given in EN 1364-1:2015, A.4.3.3, 1st and 2nd paragraph, under the precondition that the dimensions (width and height) of the total glazed test element are not increased and the radiation does not exceed 15 kW/m2. The value Wext of an individual rectangular or circular glass shall be calculated according to Formulae B.1 and B.4 given in Annex B. The increased glass dimension can also be used in combination with the rules given in 7.1 NOTE This requirement deviates from EN 1364-1:2015, A.4.3.3, where the extension of the individual glass pane is based on an unjustifiable request of a specific radiation limit. 5.4 Exchange of timber glazing beads The basis for the exchange of timber types is a reference test together with data on the basis of density tests (when available), or calculations according to EN 1995-1-2 or reference values for the replacement timber type and its density. Glued laminated timber shall only be used if it has been tested according to EN 1364-1. Test results of any solid or laminated timber type apply to other timber types except beech under the following conditions: — Glued laminated timber may be replaced by solid timber but not vice versa. — Timber to be exchanged shall have the same or higher density as tested. — Hard wood with a density
· 450 kg/m3 shall not be exchanged with soft wood. Beech may only be used instead of soft wood or hard wood with a density
¶ 450 kg/m3. Test results for unprotected timber apply equally to protected timber but not vice versa. Test results for protected timber apply only to the type of protection used in the test. Protection means any measure, e.g. impregnation, varnish, coating or paint, intended to improve the reaction to fire classification according to EN 13501-1 or the K-classification according to EN 13501-2 of the timber. A bead fixed by screws shall not be exchanged by a clipped or nailed bead unless this possibility has been shown to work by pre-existing test data. The bead depth (see Figure 5, item 6) may be increased provided the mechanical edge cover
remains within the limits determined by the reference test or as determined by
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