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1、BRITISH STANDARD BS EN 845-3:2001 Specification for ancillary components for masonry Part 3: Bed joint reinforcement of steel meshwork The European Standard EN 845-3:2001 has the status of a British Standard ICS 91.080.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW License
2、d Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 845-3:2001 This British Standard, having been prepared under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committe
3、e and comes into effect on 15 August 2001 BSI 07-2001 ISBN 0 580 37767 9 National foreword This British Standard is the official English language version of EN 845-3:2001. This edition of EN 845-3, which is an “ordinary” European Standard, will be superseded in due course by a “harmonized” European
4、Standard EN 845-3 which fully takes into account the requirements of the European Commission mandate M116 “Masonry and related products”, given under the EU Construction Products Directive (89/106/EEC), and intended to lead to CE marking. EN 845-3 is the subject of transitional arrangements agreed u
5、nder the Commission mandate. The Member States have agreed a nominal transition period for the co-existence of the future “harmonized” European Standard EN 845-3 and their corresponding national standard(s). It is intended that this period will comprise a nominal nine month period during which any r
6、equired changes to national regulations are to be made, followed by a further nominal twelve month period for the implementation of CE marking. At the end of this co-existence period, the national standard(s) will be withdrawn. There are no existing British Standards to be superseded. The UK partici
7、pation in its preparation was entrusted by Technical Committee B/519, Masonry and associated testing, to Subcommittee B/519/3, Ancillary components for masonry, which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cros
8、s-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electroni
9、c Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand
10、the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an
11、inside front cover, the EN title page, pages 2 to 18, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07
12、 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 845-3 April 2001 ICS 91.060.10; 91.080.30 English version Specification for ancillary components for masonry Part 3: Bed joint reinforcement of steel meshwork Spcification pour composants access
13、oires de maonnerie Partie 3: Treillis darmature en acier pour joints horizontaux Festlegungen fr Ergnzungsbauteile fr Mauerwerk Teil 3: Lagerfugenbewehrung aus Stahl This European Standard was approved by CEN on 5 August 2000. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
14、 which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European S
15、tandard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national sta
16、ndards 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 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE F
17、R NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 845-3:2001 E Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c
18、) BSI Page 2 EN 845-3:2001 BSI 07-2001 Contents Page Foreword3 1Scope4 2Normative reference.4 3Definitions and symbols.5 4Materials and types of products6 5Requirements10 6Description and designation.13 7Marking14 8Evaluation of conformity14 Annex A(normative) Scheme of factory production control16
19、Bibliography18 Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 3 EN 845-3:2001 BSI 07-2001 Foreword This European Standard has been prepared by Technical Committee CEN/TC 125, Masonry, the Secretariat of which is held by BSI. This Europ
20、ean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2001, and conflicting national standards shall be withdrawn at the latest by December 2001. This European Standard has been prepared under a mandate g
21、iven to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Au
22、stria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
23、 Page 4 EN 845-3:2001 BSI 07-2001 1Scope This European Standard specifies the requirements for welded wire meshwork, woven wire meshwork and expanded metal meshwork for use as reinforcement in bed joints of masonry. Where products are intended for use in cavity wall construction, this European Stand
24、ard covers only the performance of the meshwork as reinforcement in bed joints and not its performance as wall ties across the cavity. The following are not covered by this standard: - products in the form of individual bars or rods; - products formed from materials other than specified grades of au
25、stenitic stainless steel or zinc pre-coated steel sheet or zinc coated steel wire with or without organic coating. 2Normative reference This European Standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate plac
26、es in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication refer
27、red to applies. EN 846-2Methods of test for ancillary components for masonry Part 2: Determination of bond strength of bed joint reinforcement in mortar joints. EN 846-3Methods of test for ancillary components for masonry Part 3: Determination of shear strength of welds of bed joint reinforcement. E
28、N 10002Metallic materials; tensile testing Part 1: Method of test; Part 2: Verification of the force measuring system of the tensile testing machines; Part 4: Verification of extensometers used in uniaxial testing. EN 10020Definitions and classification of grades of steel. EN 10088Stainless steels.
29、EN 10142Continuously hot-dip zinc coated low carbon steel sheet and strip for cold forming Technical delivery conditions. EN 10147Continuously hot-dip zinc coated unalloyed structural steel sheet and strip Technical delivery conditions. EN 10214Continuously hot-dip zinc-aluminium (ZA) coated steel s
30、trip and sheet Technical delivery conditions. EN 10244 Steel wire and wire products-Non-ferrous metallic coatings on steel wire Part 1: General principle; Part 2: Zinc and zinc alloy coatings on steel wire. EN 10245Steel wire and wire products Organic coatings on wire. Licensed Copy: sheffieldun she
31、ffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 5 EN 845-3:2001 BSI 07-2001 ISO 10606Steel for the reinforcement of concrete Determination of percentage total elongation at maximum force. 3Definitions and symbols 3.1Definitions For the purpose of this Standard, the
32、following definitions apply: 3.1.1 bed joint: Mortar layer between the bed faces of masonry units. 3.1.2bed joint reinforcement: Steel reinforcement that is prefabricated for building into a bed joint. 3.1.3bond strength: Tensile load that can be resisted by a specified length of reinforcement in a
33、masonry bed joint. 3.1.4characteristic yield strength: The value of the yield strength above which 95 % of all the individual test results occur. 3.1.5cross wires: Wires which connect longitudinal wires in order to maintain their spacing. 3.1.6declared value: Value for a product, determined in accor
34、dance with this standard, that a manufacturer is confident of achieving bearing in mind the variability of the manufacturing process. 3.1.7designed application: Application based on calculations according to accepted structural design methods. 3.1.8element: Complete length of bed joint reinforcement
35、 either in straight cut lengths or in a roll. 3.1.9lap length: Minimum length of a piece of bed joint reinforcement running in parallel with the next piece in order to maintain the full effectiveness of the reinforcement in the masonry bed joint. 3.1.10 longitudinal wire: Wire placed parallel to the
36、 length of the masonry. 3.1.11 meshwork: Network created with welded or woven wires or as a result of expanding a strip with a series of parallel slits. 3.1.12 non designed application: Application not based on calculations to accepted structural design methods, but on accepted rules. 3.1.13 profile
37、 height: Maximum overall height (distance between the upper and lower surfaces at right angles to the length and width of the joint) of the embedded portion of the bed joint reinforcement. 3.1.14 width: Overall dimension in the plane of the bed joint reinforcement measured perpendicular to the longi
38、tudinal axis. 3.1.15 wire: Longitudinal cold drawn metal of any cross-sectional shape. 3.1.16 wire size: Diameter in millimetres of a circle with an area equal to the cross sectional area of the wire. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy,
39、(c) BSI Page 6 EN 845-3:2001 BSI 07-2001 3.2Symbols Acis the cross sectional area of deformed plain wire, (mm). Aeis the cross sectional area of truss type wire meshwork or expanded metal meshwork, (mm). Agtis the percentage total elongation at maximum force, (%). ais the width of the bed joint rein
40、forcement, (mm). bis the pitch of the cross wire, (mm). cis the wire size of the longitudinal wires, (mm). dis the wire size of the cross wires, (mm). eis the pitch of the longitudinal wires in woven wire meshwork, (mm). fis the aperture length of the expanded metal meshwork (centre to centre), (mm)
41、. gis the aperture width of the expanded metal meshwork (centre to centre), (mm). lsis the length of a specimen of deformed plain wire or expanded metal meshwork, (mm). lis the length of an element of bed joint reinforcement as delivered by the manufacturer, (m). mis the mass of a specimen of deform
42、ed plain wire or expanded metal meshwork, (g). ris the nominal density of the material, (kg/m). Rmis the tensile strength, (N/mm). Reis the yield strength, (N/mm). Rp0,2is the 0,2 % proof strength, (N/mm). Re0,5is the proof strength at a total extension of 0,5 %, (N/mm). tis the profile height, (mm)
43、. 4Materials and types of products 4.1 Materials Materials for the manufacture of bed joint reinforcement and their protective coatings shall be selected from those given in Table 1. Within a product, stainless steel shall not be mixed with other types of steel. Licensed Copy: sheffieldun sheffieldu
44、n, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Page 7 EN 845-3:2001 BSI 07-2001 Table 1 Materials and corrosion protection systems for bed joint reinforcement MaterialSpecification for body material1) Minimum coating specificationMaterial coating reference No.5) Mass per one s
45、ide2) g/m2 Mass per two sides3) g/m2 Thickness per side ?m4) Austenitic stainless steel (molybdenum chrome nickel alloys) EN 10088R1 Austenitic stainless steel (chrome nickel alloys) EN 10088R 3 Zinc coated steel wire6)EN 10020 with EN 10244 on zinc coating 265R 13 Zinc/ coated steel wire6) with org
46、anic coating over all surfaces of finished component EN 10020 with EN 10244 on zinc coating and EN 10245 on organic coating: Part 2 Class 2a or 2b or Part 3 Type III 60 min. 80 mean 100 R 18 Zinc coated steel wire6)EN 10020 with EN 10244 on zinc coating 105R 19 Zinc coated steel wire6)EN 10020 with
47、EN 10244 on zinc coating 60R 20 Zinc pre-coated steel strip or sheet6) EN 10142/10147 /10214 on zinc coated steel 27519R 21 1) Except where specified the manufacturer may choose an appropriate grade of steel conforming to EN 10020 for zinc-coated products. 2) Coating weight is of zinc or zinc/alumin
48、ium alloy and is given for one side for wire and post fabrication coatings. 3) Coating weight is of zinc or zinc/ aluminium alloy and given for two sides for pre-galvanized sheet products. The mean one side figure will be 50 % of the two side figure but not necessarily evenly distributed. 4) Coating
49、 thickness refers to the minimum thickness of metallic protective coating on any uncut surface of a product or any surface of a post-fabrication galvanized product. 5) This number is given to allow unambiguous materials specification and gives no indication of relative performance or quality. 6) Where zinc is stated, alternatively zinc/aluminium alloys containing approximately 5 % aluminium may be used. Licensed Copy: sheffieldun sheffieldun, na, Tue Nov 07 06:40:47 GMT+00:00 2006, Uncontrolled Copy, (c) BS
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