SIST EN 12446:2003
(Main)Chimneys - Components - Concrete outer wall elements
Chimneys - Components - Concrete outer wall elements
This Standard specifies the material, dimensional and performance requirements, including methods of test for factory made concrete outer wall elements. These elements are intended to be installed in accordance with EN 166/12. The Standard identifies elements having up to four passages designated to accomodate a combination of flue liners and or air ducts. This Standard also relates to storey-height and reinforced outer wall elements.
Abgasanlagen - Bauteile - Außenschalen aus Beton
Diese Europäische Norm legt die Werkstoffe, Maße und Leistungsanforderungen für Außenschalen und Formteile aus Beton für Abgasanlagen fest.
Die Norm beschreibt Außenschalen mit bis zu vier Durchgängen, die eine Kombination aus Innenrohren und/oder Lüftungen aufnehmen können.
Diese Norm gilt ebenfalls für geschoßhohe und bewehrte Außenschalen.
ANMERKUNG 1 Die Klassen in dieser Norm sind nicht aus den Vorgaben des Artikels 3.2 der Richtlinie 89/106/EG abgeleitet. Sie sollten als technische Klassen im Sinne des Leitdokumentes E "Stufen und Klassen in der Bauproduktrichtlinie" betrachtet werden.
ANMERKUNG 2 Jeder Hinweis auf den Begriff "Außenschalen" impliziert sowohl die Außenschalen als auch ihre Formteile, außer, wo er anders angegeben wird.
Conduits de fumée - Composants - Enveloppes externes en béton
La présente Norme européenne spécifie les exigences relatives aux matériaux, aux dimensions et aux performances, pour les enveloppes externes de conduits de fumée en béton préfabriquées en usine.
La norme s'applique aux éléments ayant jusqu'a quatre canaux conçus pour s'adapter aux combinaisons de conduits de fumée intérieurs et/ou de conduits de ventilation.
La présente norme traite aussi des enveloppes externes hauteur d'étage et des enveloppes externes armées.
NOTE 1 Les classes de cette norme ne constituent pas l'application des conditions mentionnées au paragraphe 3.2 de la Directive 89/106/EC et il convient de seulement les considérer comme des classes techniques au sens du Guide E de la commission " Niveaux et classes dans la Directive Produits de Construction ".
NOTE 2 Toute référence au terme " enveloppe externe " implique l'ensemble des enveloppes externes et leurs accessoires, sauf si indication différente.
Dimniki – Sestavni deli – Betonski elementi (nosilnega) plašča dimnika
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PQLNDAbgasanlagen - Bauteile - Außenschalen aus BetonConduits de fumée - Composants - Enveloppes externes en bétonChimneys - Components - Concrete outer wall elements91.100.30Beton in betonski izdelkiConcrete and concrete products91.060.40Dimniki, jaški, kanaliChimneys, shafts, ductsICS:Ta slovenski standard je istoveten z:EN 12446:2003SIST EN 12446:2003en01-september-2003SIST EN 12446:2003SLOVENSKI
STANDARD
SIST EN 12446:2003
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12446April 2003ICS 91.060.40English versionChimneys - Components - Concrete outer wall elementsConduits de fumée - Composants - Enveloppes externesen bétonAbgasanlagen - Bauteile - Außenschalen aus BetonThis European Standard was approved by CEN on 2 January 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12446:2003 ESIST EN 12446:2003
EN 12446:2003 (E)2ContentspageForeword.41Scope.52Normative references.53Terms and definitions.54Materials and designation of outer wall elements.74.1Materials.74.2Designations and classes.75Reinforcement.76Surface treatment.87Form, dimensions and tolerances.87.1Form.87.2Dimensions.87.3Tolerances.87.4Squareness of ends.88Performance.98.1Heat stress resistance.98.2Heat shock resistance.98.3Thermal resistance.108.4Compressive strength.108.5Bulk density.118.6Freeze-thaw resistance.118.7Flexural strength under wind loading.119Designation.119.1General.119.2Temperature classes.129.3Resistance to fire classes.1210Marking.1211Product information.1212Evaluation of conformity.1312.1Initial type testing.1312.2Further type tests.1312.3Factory production control.13Annex A (normative)
Test methods.14A.1Heat stress resistance and heat shock test.14A.1.1Apparatus.14A.1.2Test assembly.15A.1.3Test environment and conditioning.15A.1.4Procedure.16Annex B (normative)
Requirements of sampling plan according to ISO 2859-1 at an Acceptable QualityLevel (AQL) and inspection level S2 Inspection Procedure.19B.1Acceptability determination.19B.1.1Single sampling.19B.1.2Double sampling.19B.2Normal inspection.19B.3Normal.21SIST EN 12446:2003
EN 12446:2003 (E)3B.4Reduced to normal inspection.22B.5Tightened inspection.22B.6Tightened to normal inspection.22B.7Discontinuation of inspection.22Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EUConstruction Products Directives.23Bibliography.28SIST EN 12446:2003
EN 12446:2003 (E)4ForewordThis document (EN 12446:2003) has been prepared by Technical Committee CEN/TC 166 "Chimneys", thesecretariat of which is held by UNI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2003, and conflicting national standards shall be withdrawn at the latestby January 2005.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.This standard is one of a series of co-ordinated standards dealing with specification, design, testing and installation ofchimneys, both single and multi wall.The co-ordinated package of standards is further divided by material of construction and this European Standard is oneof a series of specifications and execution documents dealing with design and installation of concrete chimney productsand systems.The standards in this series for concrete chimney products and systems are:EN 1857:Chimneys - Components - Concrete flue linersEN 1858:Chimneys - Components - Concrete flue blocksEN 12446:Chimneys - Components - Concrete outer wall elementsNo existing European Standard is superseded by the publication of this standard.Annexes A and B are normative.This document contains a bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovak Republic, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 12446:2003
EN 12446:2003 (E)51 ScopeThis European Standard specifies the material, dimensional and performance requirements for factory madeconcrete outer wall elements for chimneys including fittings.The standard covers elements having up to four passages designated to accommodate a combination of flue linersand or air ducts.This European Standard also relates to storey-height and reinforced outer wall elements.NOTE 1Classes in this standard are not derived from conditions referred to in article 3.2 of Directive 89/106/EC and shouldonly be considered as technical classes in the sense of Commission Guidance Paper E "Levels and classes in the ConstructionProducts Directive”.NOTE 2Any reference to the term ‘outer wall element’ implies both the outer wall elements and their fittings, except whereotherwise indicated.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. For datedreferences, subsequent amendments to or revisions of any of these publications apply to this European Standard onlywhen incorporated in it by amendment or revision. For undated references the latest edition of the publication referredto applies (including amendments).EN 206-1:2000, Concrete – Part 1: Specification, performance, production and conformity.prEN 14297, Chimneys - Freeze-thaw resistance test methodEN 1443:1999, Chimneys — General requirements.EN 1857:2003, Chimneys — Components — Concrete flue liners.EN 1858:2003, Chimneys — Components — Concrete flue blocks.EN 10088-2, Stainless steel — Part 2: Technical delivery conditions for sheet/plate and strip for general purposes.EN 10218-2, Steel wire and wire products —
General — Part 2: Wire dimensions and tolerances.ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptancequality limit (AQL) for lot-by-lot inspection.3 Terms and definitionsFor the purposes of this European Standard the terms and definitions given in EN 1443:1999 apply, as well as thefollowing:3.1chimney fittingchimney component, except a chimney section, conveying products of combustion3.2concretematerial formed by mixing cement, aggregate and water and with or without the incorporation of admixtures, additions,glass fibres or steel fibres which develops its properties by hydration of the cement[EN 206-1:2000]SIST EN 12446:2003
EN 12446:2003 (E)63.3outer wall elementchimney component that surrounds a flue liner to form the outer wall of a chimney3.4hollow wall outer wall elementouter wall element having vertical cavities; cavities can pass through both ends3.5manufacturer's declared internal transverse dimensionsinternal dimensions of the outer wall element measured perpendicular to the longitudinal axis3.6manufacturer's declared lengthinternal length of the outer wall element. Examples of measurement are shown in Figure 13.7manufacturer's declared structural heightmaximum safe constructional height of the outer wall elements as declared by the manufacturer3.8manufacturer's declared overall wall thicknessdimensions at its thinnest point, between the inside face and the outside face of the outer wall element, notmeasured at any joint feature, e.g. spigot/socket end3.9reinforced outer wall elementouter wall element
having steel reinforcement to assist handling3.10solid wall outer wall elementouter wall element without cavities in the thickness of its walls3.11straight outer wall elementouter wall element having the ends perpendicular to the axis of the flue3.12storey-height outer wall elementfactory made outer wall element having an overall length relating to the floor to floor height of a building3.13pre-cast concreteconcrete that is cast and cured in a place other than its final location of use3.14resistance to fire of outer wall elementsability of the outer wall elements and fittings to be resistant to soot fireSIST EN 12446:2003
EN 12446:2003 (E)7KeyLInternal lengthFigure 1 — Internal length4 Materials and designation of outer wall elements4.1MaterialsOuter wall elements shall be pre-cast concrete. Materials shall be identified for factory production control purposes.NOTE 1Additions can include glass or steel fibres.NOTE 2Attention is drawn to Commission decision 96/603/EC, as amended, in which non-combustible masonry unitscontaining not more than 1 % by mass or volume (whichever is the more onerous) of homogeneously distributed organicmaterials are classified as reaction to fire class A1 without testing.4.2Designations and classesOuter wall elements shall be designated according to their intended nominal working temperature and theirresistance to sootfire, as in clause 9.Designation classes for outer wall elements for temperature and resistance to fire shall be according to clause 9.5 Reinforcement5.1Where an outer wall element is reinforced the reinforcement shall have a maximum diameter of 8 mm and aminimum concrete cover of 20 mm on all sides.5.2In outer wall elements having a bulk density of less than 2 000 kg/m3, when measured according to A.10 of EN1857:2003, any reinforcement shall be protected against corrosion by one of the following means :a) use of stainless steel according to EN 10088-2;SIST EN 12446:2003
EN 12446:2003 (E)8b) by completely covering any mild steel reinforcement according to EN 10218-2 with a coating (e.g. Portlandcement CEM 1 or CEM 2 mixed with water to form a slurry, or epoxy resin).6 Surface treatment6.1Any surface treatment of the outer wall element, e.g. coatings, shall be factory applied prior to testing.6.2Any external surface treatment of the outer wall element, e.g. render, shall be applied as described by theproduct manufacturer, prior to testing.7 Form, dimensions and tolerances7.1FormOuter wall elements covered by this standard shall be manufactured in one of the following forms:a) with a single passage to accommodate a flue liner;b) up to four passages to accommodate a combination of up to four flue liners and/or ducts for ventilation air.7.2DimensionsOuter wall elements shall have a wall thickness not less than 20 mm.7.3TolerancesTolerances on manufacturer’s declared dimensions, including taper, shall be:a) Declared internal transverse dimensionsbelow 300 mm: ± 3 mm300 mm and above: ± 1,5 %b) Declared lengthbelow 300 mm: ± 5 mm300 mm to 700 mm: ± 7 mmabove 700 mm: ± 10 mmc) Declared overall wall thicknessbelow 10 mm: + 2 mm: - 1 mm10 mm to 40 mm: + 5 mm – 1,5 mmabove 40 mm: + 12 %
- 5 %:7.4Squareness of endsWhen testing in accordance with either procedure described in A.3 of EN 1857:2003 the permissible deviation fromsquareness of ends of concrete outer wall elements shall not be greater than 10 mm at 'G' for the first procedure.With the second procedure the deviation shall not be more than 5 mm at 'G' for elements up to 400 mm at 8 mm at'G' for elements greater than 400 mm in length (height).SIST EN 12446:2003
EN 12446:2003 (E)98 Performance8.1Heat stress resistance8.1.1When outer wall elements, including those designated soot fire resistant, are tested as described in A.1 atthe test temperature appropriate to the designation given in Table 2, it shall subsequently meet either of thefollowing requirements:¾ the change in gas tightness measured before and after the test in accordance with A.5 of EN 1858:2003 shall beno greater than 25 %;¾ the change in ultimate compressive strength measured before and after the heat stress test in accordance with A.1shall be no greater than 35 %;¾ when an outer wall element is multi-flued with an equal wall thickness, the heat stress test shall be carried out onthe flue with the highest temperature designation.8.1.2Bends or fittings, made of the same material mix and by the same method of manufacture as the testedstraight outer wall element shall be deemed to comply with the requirement in 8.1.1.8.1.3Outer wall elements, made of a different material mix or using a different method of manufacture fromthose described in 8.1.2, shall be checked for heat stress resistance by testing a special straight test sample inaccordance with 8.1.1. This straight test sample shall be made using the same material mix and manufacturingmethod as the outer wall elements.8.1.4If a bend or fitting is available in the range of products, the test assembly shall include a combination ofthe fitting equivalent to the size being tested. The outer wall element shall be installed according to themanufacturer’s instructions.8.1.5The maximum temperature measured on the surface of adjacent combustible materials shall not exceed85 °C when related to an ambient temperature of 20 °C. The manufacturer shall declare the distance to thecombustible partition and whether the gap between the outer wall element and the adjacent combustible partition isopened or closed. The above mentioned distance shall be determined by testing to the heat stress of A.1 at atemperature given in Table 1 appropriate to the product designation.This requirement is declared fulfilled when outer wall elements, where combustibles are at least 50 mm from theouter wall and the space ventilated are tested in a free standing assembly at the test temperatures given in TableA.1 and the temperature of the outer wall does not exceed 100 °C at an ambient temperature of 20 °C.8.2Heat shock resistance8.2.1Following the heat stress resistance test required in 8.1, when an outer wall element designated as sootfire resistant is tested as described in A.1.4.4 to a flue gas temperature of 1 000°C for a period of 30 min +/- 1 theelement shall subsequently meet either of the following requirements:¾ the change in gas tightness measured before and after the test in accordance with A.5 of EN 1858:2003 shall beno greater than 25 %;¾ the change in ultimate compressive strength measured before and after the heat stress test in accordance with A.1shall be no greater than 35 %.When an outer wall element is multi-flued with an equal wall thickness, the heat shock test shall be carried out onthe flue with the highest temperature designation.NOTEThe test of A.1.4.4 is the method used to assess the sootfire resistance.8.2.2Bends or fittings, made of the same material mix and by the same method of manufacture as the testedstraight outer wall element shall be deemed to comply with the requirement in 8.2.1.SIST EN 12446:2003
EN 12446:2003 (E)108.2.3Outer wall elements, made of a different material mix or using a different method of manufacture fromthose described in 8.2.2, shall be checked for heat shock resistance by testing a special straight test sample inaccordance with 8.2.1. This straight test sample shall be made using the same material mix and manufacturingmethod as the outer wall elements.8.2.4The maximum temperature measured on the surface of adjacent combustible materials shall not exceed100 °C when related to an ambient temperature of 20 °C when test assembly is tested at the test temperature of1 000 °C over a period of 30 min. The manufacturer shall declare the distance to the combustible partition and whetherthe gap between the outer wall element and the adjacent combustible partition is opened or closed. This distance shallnot exceed the distance obtained in 8.1.5.This requirement is declared fulfilled when outer wall elements, where combustibles are at least 50 mm from theouter wall and the space ventilated are tested in a free standing assembly at the test temperature of 1 000 °C overa period of 30 min and the temperature of the outer wall does not exceed 140 °C at an ambient temperature of20 °C.Table 1 — Heat
stress test temperatureTemperature groupTemperature of flue gas°CT 600700 050+T450550 050+T 400500 050+T 300350 035+T250300 030+T 200250 025+T 160190 019+T140170 017+T 120150 015+T100120 012+T 080100 010+8.3Thermal resistanceThermal resistance shall be measured according to the method given in A.4 of EN 1858:2003 or calculated accordingto the method given in annex C of EN 1858:2003 and the value obtained declared.8.4Compressive strength8.4.1The manufacturer shall declare the structural height. When tested as described in A.8 of EN 1857:2003straight outer wall elements shall withstand an intensity of loading equivalent to four times the manufacturer'sdeclared structural height.8.4.2Outer wall element bends and fittings made of the same material mix and by the same method ofmanufacture as the tested straight elements shall be deemed to conform to 8.4.1.8.4.3Outer wall elements made from a different material mix, or using a different method of manufacture fromthose described in 8.4.2, shall be checked for compressive strength by testing a special straight test sample inaccordance with 8.4.1. This special straight test sample shall be made using the same material mix andmanufacturing method as the bend or fitting.SIST EN 12446:2003
EN 12446:2003 (E)118.5Bulk densityWhen outer wall elements are tested as described in A.10 of EN 1857:2003 the lowest and highest bulk density valueshall be within a tolerance of ± 10 % of the manufacturers declared bulk density for the outer wall element.8.6Freeze-thaw resistanceFreeze-thaw resistance shall be tested in those cases where the characteristic is necessary/relevant and there is arequirement for this in national (local) regulations, (see prEN 14297).NOTEA European test method for freeze-thaw is under development.8.7Flexural strength under wind loadingOuter wall elements to this standard are not tested for stability under wind loading. The maximum free standing heightof outer wall elements to this standard shall be 4,5 times the least lateral overall external dimension of the outer wallelement from the last point of lateral support (see Figure 3 of EN 1858:2003). The manufacturer shall declare thesmallest lateral dimension.NOTEProcedures for assessing the flexural strength under wind loading for masonry chimney structures are underdevelopment and will be introduced later.9 Designation9.1GeneralAll concrete outer wall elements to this standard shall be designated in accordance with the following designationsystem for which an example is given below:EN 12246T 120O(20)The number of this standardFlue gas temperature classFire resistance (Sootfire resistance G(xx) or O(xx)SIST EN 12446:2003
EN 12446:2003 (E)129.2Temperature classesFor temperature class see Table 2.Table 2 — Temperature classTemperature classNominal working temperature °CT080£ 80T100£ 100T120£ 120T140£ 140T160£160T200£ 200T250£ 250T300£ 300T400£ 400T450£ 450T600£ 6009.3Resistance to fire classesClass G(xx): Soot fire resistant outer wall elements complying with 8.2 shall be designated G (xx), where (xx) is theminimum distance to combustible materials, in mm, obtained from 8.2.4.Non soot fire resistant outer wall elements complying with 8.1 shall be designated O(xx), where (xx) is the minimumdistance to combustible materials, in mm, obtained from 8.1.510 MarkingA minimum of 20 % of the outer wall components in each consignment shall be legibly and indelibly marked with thefollowing information:a) name or trademark of the manufacturer;b) manufacturers batch or date code;c) number of this European Standard;d) designation in accordance with 4.2;NOTEFor CE marking and labelling, ZA.3 applies.11 Product informationThe manufacturers printed literature for the product shall include the following:a)the manufacturers product description;b)manufacturer's declared sizes;c)the manufacturers designation;d)distance to combustibles;e)thermal resistance;SIST EN 12446:2003
EN 12446:2003 (E)13f)manufacturer's declared structural height;g)detailed installation instructions.NOTEFor CE marking requirements for information on the product, ZA.3 applies.12 Evaluation of conformity12.1Initial type testingType tests relating to material composition shall be performed initially together with factory production control tests asgiven in Table 3. One test shall be carried for each requirement.The thermal testing shall be carried out on one size of flue liner for each geometrical configuration e.g. circular, square,rectangular. For circular flue liners the size to be tested shall be 200 mm +/- 50 mm internal diameter. For othergeometrical configurations the flue liner shall have an equivalent cross-sectional area range.12.2Further type testsType tests shall be performed when a change is made either in material composition, processing technique or to thedesign or method of manufacture of the flue liner, but they can be performed more frequently by incorporation into aplan for monitoring the consistency of manufacture (see Table 3).Table 3 — Factory production control and type testsRelevant requirement clausesItemFactory production control12.3 aType tests12.1 and 12.2Outer wall elements andfittings4.1; 5; 6; 7.3; 7.4; 8.4; 8.58.1; 8.2; 8.3; 8.4a The tests carried out during FPC are intended to verify that the performance requirements assessedthrough the initial type testing are maintained.12.3Factory production controlTo achieve compliance with this standard the manufacturer shall establish and maintain an effective documentedquality system.Factory production control tests are carried out following manufacture to monitor the quality of product (see Table 3).Sampling and testing of any batch shall be completed prior to removal from the works and shall be in accordance withISO 2859-1 at an AQL of 10 % and inspection level S2. Isolated batches of units shall be assessed in accordance withtightened inspection procedures, with a maximum batch size of 2500 (see annex B).Batches rejected under the factory production control procedure can be resubmitted once, after removal of units withpreviously undetected visible defects, under the tightened inspection procedures, in respect only of the defect thatcaused initial rejection.NOTEA quality system assessed by a certification body which complies with the requi
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