1、BRITISH STANDARD BS EN 12843:2004 Precast concrete products Masts and poles The European Standard EN 12843:2004 has the status of a British Standard ICS 29.240.20; 91.100.30 BS EN 12843:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 13
2、December 2004 BSI 13 December 2004 ISBN 0 580 45074 0 National foreword This British Standard is the official English language version of EN 12843:2004. EN 12843 is a candidate “harmonized” European Standard and fully takes into account the requirements of the European Commission mandate M/100, Prec
3、ast concrete products, given under the EU Construction Products Directive (89/106/EEC), and is intended to lead to CE marking. The date of applicability of EN 12843 as a harmonized European Standard, i.e. the date after which this standard may be used for CE marking purposes, is subject to an announ
4、cement in the Official Journal of the European Communities. The Commission in consultation with Member States has agreed a transition period for the co-existence of harmonized European Standards and their corresponding national standard(s). It is intended that this period will comprise a period, usu
5、ally nine months, after the date of availability of the European Standard, during which any required changes to national regulations are to be made, followed by a further period, usually of 12 months, for the implementation of CE marking. At the end of this co-existence period, the national standard
6、(s) will be withdrawn. EN 12843 is the subject of transitional arrangements agreed under the Commission mandate. In the UK, there are no corresponding national standards of national origin. The UK participation in its preparation was entrusted to Technical Committee, B/524, Precast concrete products
7、, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the
8、 section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applicati
9、on. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monito
10、r related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 31 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last
11、issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN12843 September2004 ICS91.100.30;29.240.20 Englishversion PrecastconcreteproductsMastsandpoles ProduitsprfabriqusenbtonMtsetpoteaux BetonfertigteileMaste ThisEuropeanStandardwasapproved
12、byCENon24June2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentra
13、lSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationals
14、tandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COM
15、ITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN12843:2004:EEN 12843:2004 (E) 2 Contents The numbering of clauses is strictly related to EN 13369
16、, Common rules for precast concrete products, at least for the first three digits. When a clause of EN 13369 is not relevant or included in a more general reference of this standard, its number is omitted and this may result in a gap on numbering page Foreword4 Introduction .6 1 Scope 7 2 Normative
17、references 7 3 Terms and definitions .7 4 Requirements.8 4.1 Material requirements.8 4.1.1 General8 4.1.5 Inserts and connectors .8 4.2 Production requirements 9 4.3 Finished product requirements9 4.3.1 Geometrical properties .9 4.3.2 Surface characteristics .9 4.3.3 Mechanical resistance.9 4.3.4 Re
18、sistance and reaction to fire 10 4.3.7 Durability 10 4.3.8 Detailing10 4.3.9 Earth11 5 Test methods11 5.1 Tests on concrete 11 5.2 Measuring of dimensions and surface characteristics .12 5.2.1 Appearance of surface finish .12 5.2.2 Measurement of dimensions 12 5.4 Concrete cover.12 5.5 Mechanical re
19、sistance, verification by testing .12 5.5.1 General12 5.5.2 Bending test .12 5.5.4 Torsion test 14 6 Evaluation of conformity and compliance criteria .15 6.1 General15 6.2 Type testing15 6.3 Factory production control.15 7 Marking and labelling 15 8 Technical documentation .16 8.1 General16 8.2 Hand
20、ling, storage and transportation16 8.3 Traceability.16 Annex A (normative) Inspection scheme 17 Annex B (normative) Concrete cover 18 EN 12843:2004 (E) 3 Annex Y (informative) Choice of CE marking method.19 Y.1 General .19 Y.2 Method 1.19 Y.3 Method 2.19 Y.4 Method 3.19 Annex ZA (informative) Relati
21、onship between this European Standard and the Essential Requirements of EU Directive20 ZA.1 Scope and relevant characteristics .20 ZA.2 Procedure for attestation of conformity of masts and poles22 ZA.2.1 System of attestation of conformity 22 ZA.2.2 EC Certificate and Declaration of conformity.23 ZA
22、.3 CE marking and labelling24 ZA.3.1 General .24 ZA.3.2 Declaration of geometrical data and material properties25 ZA.3.3 Declaration of product properties .28 ZA.3.4 Declaration of compliance with a given design specification 29 Bibliography31 EN 12843:2004 (E) 4 Foreword This document (EN 12843:200
23、4) has been prepared by Technical Committee CEN/TC 229 “Precast concrete products”, the secretariat of which is held by AFNOR, and was examined by and agreed with a joint working party appointed by the Liaison Group CEN/TC 229 CEN/TC 250, particularly for its compatibility with structural Eurocodes.
24、 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 March 2005, and conflicting national standards shall be withdrawn at the latest by June 2006. This document has been prepared under a mandate given
25、 to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of Construction Products Directive(89/106/EEC) of European Union (EU) For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This stan
26、dard is one of a series of product standards for precast concrete products. For common aspects reference is made to EN 13369 : Common rules for precast products, from which also the relevant requirements of the EN 206-1 : Concrete - Part 1 : Specification, performances, production and conformity are
27、 taken. The references to EN 13369 by CEN/TC 229 product standards are intended to make them homogeneous and to avoid repetitions of similar requirements. Eurocodes are taken as a common reference for design aspects. The installation of some structural precast concrete products is dealt with by ENV
28、13670-1 : Execution of concrete structures Part 1 : Common rules, which has at the moment the status of an European Prestandard. In all countries it can be accompanied by alternatives for national application and it shall not be treated as a European Standard. The programme of standards for structur
29、al precast concrete products comprises the following standards, in some cases consisting of several parts : EN 1168, Precast concrete products - Hollow core slabs prEN 12794, Precast concrete products - Foundation piles EN 12843, Precast concrete products Masts and poles EN 13224, Precast concrete p
30、roducts - Ribbed floor elements EN 13225, Precast concrete products Linear structural elements EN 13693, Precast concrete products Special roof elements prEN 13747, Precast concrete products Floor plates for floor systems prEN 13978, Precast concrete products Precast concrete garages prEN 14843, Pre
31、cast concrete products - Stairs prEN 14844, Precast concrete products Box culverts EN 12843:2004 (E) 5 prEN 14991, Precast concrete products Foundation elements prEN 14992, Precast concrete products Wall elements: Products properties and performances prEN 15037, Precast concrete products Beams for b
32、eam-and-block floor systems This standard defines in Annex ZA the application methods of CE marking to products designed using the relevant EN Eurocodes (EN 1992-1-1 and EN 1992-1-2). Where, in default of applicability conditions of EN Eurocodes to the works of destination, design provisions other t
33、han EN Eurocodes are used for mechanical strength and/or fire resistance, the conditions to affix CE marking to the product are described in ZA.3.4. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European
34、 Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 12843:2004 (E)
35、 6 Introduction Products covered by the present standard are structural units mainly designed to resist relevant actions resulting from their specific use. It is in line with the relevant general requirements (EN 1992-1-1 and EN 1992-1-2, EN 13369, EN 206-1, prEN 50423:2004). It gives, where applica
36、ble, requirements related to ambient condition and exposure classes for concrete covers. In general EN 1991 1-1, Eurocode 1, Actions on structures is applicable for actions, but specific uses may require additional information (e.g. wind turbines, overhead electrical lines, overhead electrical lines
37、 for railways, trams and similar). In Clauses 4.3.3 and 4.3.8 this standard includes specific provisions resulting from the application of EN 1992-1-1 rules made specific for the concerned product. The use of these provisions is consistent with a design of works made with EN 1992-1-1. EN 12843:2004
38、(E) 7 1 Scope This document specifies requirements for precast concrete poles (also commonly called masts) (either all of a piece or composed of elements), reinforced and/or prestressed as structural elements; they may be hollow or solid and may receive or include additional components (e.g. cross-a
39、rms, platforms etc.), inserts and connectors. Additional elements may be connected to pole elements. Structures made from such elements in mono- or multi-legged form may be used for : overhead electrical lines ; telecommunication lines ; overhead electrical lines for railways, trams and similar ; su
40、pports for lighting ; supports for loudspeaker installation ; antenna and telecommunication poles ; supports for wind turbines ; and similar installations. This document does not cover lighting columns for use in traffic circulation areas. 2 Normative references The following referenced documents ar
41、e indispensable for the application 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 1992-1-1:2004, Eurocode 2: Design of concrete structures - Part 1-1: General rules
42、and rules for buildings EN 12390-5, Testing hardened concrete Part 5 : Flexural strength of test specimens. EN 13369:2004, Common rules for precast concrete products. 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 1992-1-1:2004, EN 13369:2004 and the
43、 following apply. 3.1 pole (or mast) upright slender structure fixed rigidly at the foot 3.2 foot lower end of a pole EN 12843:2004 (E) 8 3.3 top upper end of a pole 3.4 pole length length from foot to top 3.5 embedment length length of the pole segment firmly fixed in the surrounding of earth or fo
44、undation 3.6 specific complementary provision provision valid in the place of use, such as clients order, or national (non conflicting) complementary standard, specific to a product covered by the present standard 3.7 shock concrete concrete compacted by mechanical shock, e.g. by using excentric sha
45、fts to lift and drop casting table 3.8 spun concrete concrete compacted by pressure and vibration using a rotating mould (centrifugal force) 3.9 vacuum concrete concrete exposed to a vacuum, (so the enclosed air and some water are driven to the surface and sucked away, when relieving the vacuum, the
46、 air pressure compacts the concrete) 3.10 vibrated concrete concrete compacted by vibrators which may be internal, external or other surface types 3.11 pole straightness maximum allowable deviation of the pole with respect to a line along its total length 4 Requirements 4.1 Material requirements 4.1
47、.1 General For general aspects, constituent materials of concrete, reinforcing and prestressing steel, inserts and connectors, the relevant clauses of EN 13369:2004, Clause 4.1 shall apply. In particular the ultimate tensile and tensile yield strength of steel shall be considered. NOTE The missing n
48、umbers correspond to the clauses of EN 13369 included in the general references made in this subchapter. 4.1.5 Inserts and connectors Where applicable inserts and connectors shall comply with complementary requirements, valid in the place of use of the poles. EN 12843:2004 (E) 9 4.2 Production requirements The production of concrete shall comply with EN 13369:2004, Clause 4.2, except for the concrete strength classes (4.2.2.1) that shall be at least C 30/37 for reinforced poles and C 35/45 for prestressed poles; provisions valid i
