EN 12839:2001
(Main)Precast concrete products - Elements for fences
Precast concrete products - Elements for fences
This standard covers prefabricated concrete elements which can be used together or in combination with other elements to erect fences. The current concrete elements include posts (reinforced, prestressed or post-tensioned concrete), solid or base or open panels, slabs, rails, spurs, struts and gravel boards. The purpose of this standard is to define: a) the terminology; b) the main guidelines needed for concrete elements which are well suited to their intended use.
Vorgefertigte Betonerzeugnisse - Betonelemente für Zäune
Diese Norm behandelt vorgefertigte Betonerzeugnisse(aus Stahl- oder Spannbeton), die zusammen oder in Verbindung mit anderen Bauteilen zur Errichtung von Zäunen, z.B. Einfreidungen, verwendet werden können. Der vorgesehene Verwendungszweck kann nichttragende bzw. unerheblich tragende Funktionen umfassen. Die üblichen Betonerzeugnisse sind Pfähle , Voll- oder durchbrochene Tafeln, Platten, Riegel, Stützpfeiler, Abstützungen und Sockelplatten. Die Norm legt die Bewertung der Konformität der von dieser Europäischen Norm erfassten Produkte fest. Die Bedingungen für die Kennzeichnung werden ebenfalls behandelt.
AMMERKUNG Anhang A enthält Angaben zu den Zaunarten, in die diese Betonelemente eingebaut werden können.
Produits préfabriqués en béton - Eléments pour clôtures
La présente Norme européenne couvre les éléments préfabriqués en béton (armé ou précontraint) qui peuvent être utilisés ensemble ou en combinaison avec d'autres éléments pour réaliser des clôtures, telles que clôtures séparatives, par exemple.
Les emplois prévus peuvent être non structuraux ou partiellement structuraux.
Les éléments en béton courants sont les poteaux, les dalles pleines et les panneaux ajourés, les plaques, les lisses, les poteaux d'embase, les jambes de force et les plaques gravillonnées.
Elle précise l'évaluation de la conformité des éléments à la présente Norme européenne. Les conditions de marquage sont incluses.
NOTE L'annexe A fournit des informations sur les types de clôtures possibles dans lesquels ces éléments peuvent être incorporés.
Betonski izdelki - Elementi za ograje
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Precast concrete products - Elements for fencesBetonski izdelki - Elementi za ograjeProduits préfabriqués en béton - Eléments pour clôturesVorgefertigte Betonerzeugnisse - Betonelemente für Zäune91.100.30Beton in betonski izdelkiConcrete and concrete products91.090Konstrukcije zunaj stavbExternal structuresICS:SIST EN 12839:2002enTa slovenski standard je istoveten z:EN 12839:200101-september-2002SIST EN 12839:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12839May 2001ICS 91.090; 91.100.30English versionPrecast concrete products - Elements for fencesProduits préfabriqués en béton - Eléments pour clôturesVorgefertigte Betonerzeugnisse - Betonelemente für ZäuneThis European Standard was approved by CEN on 2 March 2001.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,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12839:2001 E
Page 2EN 12839:2001ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Requirements.75Test methods.146Evaluation of conformity.237Marking and labelling.26Annex A (informative)
Basic types of fences - Terminology.28Annex B (normative)
Index of references for surface finish as cast - Reference photographs used toappreciate the incidence of blownotes in surfaces.34Annex C (informative)
Factory production control procedures.38Annex D (informative)
Acceptance testing of a consignment at delivery.41Annex E (normative)
Test of water absorption.43Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EUConstruction Products Directive.44Bibliography.47
Page 3EN 12839:2001ForewordThis European Standard has been prepared by Technical Committee CEN/TC 229 "Precast concrete products", thesecretariat of which is held by AFNOR.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 November 2001, and conflicting national standards shall be withdrawn at the latestby February 2003.This European Standard has been prepared under a mandate given to CEN by the European Commission and theEuropean Free Trade Association, and supports essential requirements of EC Directive(s).For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this standard.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, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.
Page 4EN 12839:20011 ScopeThis European standard covers prefabricated concrete elements (in reinforced or prestressed concrete) which canbe used together or in combination with other elements to erect fences e.g. boundary fences.The intended uses may be nonstructural or lightly structural.The current concrete elements include posts, solid or open panels, slabs, rails, spurs, struts and base panels.It provides for the evaluation of conformity of elements to this European Standard. Marking conditions are included.NOTEAnnex A intends to provide information on the possible types of fences in which these elements may be part of.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. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 206-1:2000, Concrete - Performance, production and conformityEN 12350-1, Testing fresh concrete – Part 1: SamplingEN 12390-1, Testing hardened concrete – Part 1: Shape, dimensions and other requirements for specimens andmouldsEN 12390-2, Testing hardened concrete – Part 2: Making and curing specimens for strength testsprEN 12390-3:2001, Testing hardened concrete – Part 3: Compressive strength of test specimensEN 12390-4, Testing hardened concrete – Part 4: Compressive strength - Specification for testing machine3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply :3.1 Types of fencesAnnex A provides illustrations of typical fences3.1.1 solid fencefence made of posts and solid panels or cladding3.1.2 open-work fencefence made of posts and open-work panels possibly including solid panels3.1.3 mesh or wire fencefence made of posts and woven or welded wire mesh, and/or wires
Page 5EN 12839:20013.1.4 mixed fencefence made of posts and a combination of different elements with at least one base panel3.1.5 rail fencefence made of posts and rails3.1.6 anti-intruder fencemesh fence, solid fence or mixed fence with an enhanced level of security provided by the addition of barbed wire,barbed tape or similar attached to posts with cranked or vertical extensions3.2 PostVertical element of reinforced or prestressed concrete, intended to be buried or fastened at its baseNOTEThis element is designed to accommodate solid or open-work panels and/or rails, meshes or wires.3.2.1 intermediate postpost used in the fence line, interposed between ends, direction changes and straining points (if any)3.2.2 accessory postpost shaped and designed to provide a particular function3.2.2.1 corner postpost used at a change of direction3.2.2.2 end postpost used at the extremity of a fence line3.2.2.3 straining postpost from which tension wires are stretched, with or without struts (e.g. end-straining post, corner post, intermediatestraining post)3.2.2.4 gate postpost used to support a gate3.3 Railhorizontal element of reinforced or prestressed concrete, connected to and supported by the postNOTERails for sports grounds are distinguished from other types of rails.3.4 Panel3.4.1 solid panelpanel of reinforced concrete
Page 6EN 12839:20013.4.2 open-work panelpanel with regular or varied open-work patterns3.4.3 base panelpanel of reinforced concrete used between posts at ground level3.5 Spurshort post intended to support a fence post made with a material other than concrete3.6 Strutelement designed to provide support to post carrying horizontal loads3.7 Dimension3.7.1 work dimensiondimension specified by the manufacturer and generally complying with the dimension indicated in the project or inthe manufacturer technical documentationNOTEThe design height of the posts for solid fences is the height of the solid part of the fence.3.7.2 actual dimensiondimension found by measurements3.8 Surface finish3.8.1 surface finish as castsurface finish obtained at demoulding, if necessary after surfacing or finishing3.8.2 surface finish treatedsurface finish obtained after complementary treatment on the concrete in fresh state or in hardened state3.9 Heat treatmentthe process of heating the fresh concrete in order to accelerate cement hydration where the temperature of theconcrete after compaction is above 45 °C or is in excess of 25 °C above the ambient temperature3.10 Loadbearing capacityloadbearing capacity is the ability of an element to resist a maximum failure load3.11 Complementary loadbearing capacitycomplementary loadbearing capacity is the ability of an element to resist a defined load under service conditionsand a defined failure load.
Page 7EN 12839:20014 Requirements4.1 Material requirementsOnly materials with established suitability shall be used.For a material, the establishment of suitability may result from a European Standard which refers specifically to theuse of this material in concrete or in concrete products ; it may also result, under the same conditions, from an ISOStandard.Where this material is not covered by a European or ISO Standard, or if it deviates from the requirements of thesestandards, the establishment of suitability may result from : the relevant national standards or provisions valid in the place of use of the product which refers specifically tothe use of this material in concrete or in concrete products ;or a European Technical approval specifically to the use of this material in concrete or concrete products.For new materials, where none of the above requirements can be satisfied, the properties shall be documented bytheoretical and/or experimental evaluation.4.2 Production requirements4.2.1 Concrete production4.2.1.1 Composition4.2.1.1.1 Use of admixturesThe total amount of admixtures, if any, shall not exceed the maximum dosage recommended by the admixtureproducer and not exceed 50 g/kg cement except where higher amounts of admixtures are necessary in specialcases, e. g. for high strength concrete. The influence of the higher dosage on the performance and the durability ofthe concrete shall be considered.Admixtures used in quantities less than 2 g/kg cement are only permitted if they are dispersed in part of the mixingwater.If the total quantity of liquid admixtures exceeds 3 l/m3 of concrete, its water content shall be taken into accountwhen calculating the water/cement ratio.The compatibility of the admixtures shall be checked in the initial tests where more than one admixture is used.4.2.1.1.2 Chloride contentFor chloride content EN 206-1:2000, 5.2.7 applies.4.2.1.1.3 Resistance to alkali-silica reactionWhere aggregates contain varieties of silica susceptible to attack by alkalis (Na2O and K2O originating fromcement or other sources) and if the product is exposed to humid conditions, special precautions in the choice ofconstituents shall be taken.4.2.1.2 Concrete temperatureThe temperature of fresh concrete shall not be less 5 °C at the time of placing.
Page 8EN 12839:20014.2.1.3 CuringAll surfaces of newly cast element shall be protected against drying out if necessary.4.2.1.4 Heat treatmentWhere heat treatment (see 3.9) is applied to concrete in order to accelerate its hardening, it shall be demonstratedby initial test that the required strength is achieved for each concrete batch.4.2.1.5 Early compressive strength of concrete for prestressed productsThe minimum compressive strength at transfer of the prestress force shall be 25 N/mm2.4.2.2 Hardened concrete4.2.2.1 Compressive strengthUnder the test conditions defined in 5.5, the characteristic compressive strength of concrete for the fractile 0,05 1),after a 28 days hardening, shall be at least equal to the values given in Table 1.Moreover no specimen shall have a compressive strength less than 0,8 times the characteristic value.Table 1 — Characteristic compressive strengthConcreteReinforced concretePrestressed concreteSpecimensCylindersN/mm2CubesN/mm2CylindersN/mm2CubesN/mm2Characteristiccompressive strength ofconcrete for the fractile0,05354540504.2.2.2Tensile strengthNot relevant.4.2.3 Reinforcement4.2.3.1 Length of longitudinal reinforcement for postsThe length of the reinforcement shall not be less than the length of the element minus 100 mm.4.2.3.2 Position of prestressing steel wiresFor prestressing wires of diameter d mm the minimum concrete cover to the surface of any wire shall be 2,5 d or10 mm whichever is the greater. The minimum spacing between wires shall be 4 d mm centre to centre. Therequirements of 4.3.8.2 also apply.
1)This means that statistical interpretation of the tests results demonstrate that 95 % of the corresponding production are atleast equal to the specification.
Page 9EN 12839:20014.3 Finished product requirement4.3.1 Geometrical propertiesThe dimensions of the elements are not fixed.4.3.1.1 Production tolerancesUnder the test conditions defined in 5.1, actual dimensions shall conform to the corresponding work dimensionswithin the following limits:a) posts : length: ± 1 % cross-section dimensions: ± 3 mm straightness: < 0,5 % location of holes: ± 5 mmb) rails : length (between supports): ± 5 mm cross-section dimensions: ± 3 mm s
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