1、DRAFT FOR DEVELOPMENT DD ENV 10080:1996 Steel for the reinforcement of concrete Weldable ribbed reinforcing steel B500 Technical delivery conditions for bars, coils and welded fabric ICS 77.140.60; 91.080.40DDENV10080:1996 This Draft for Development, having been prepared under thedirection of the En
2、gineering Sector Board, was published underthe authority of the Standards Board and comes intoeffect on 15 March1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference ISE/9 Draft for comment 91/44813 DC ISBN 0 580 25196 9 Committees responsible for thi
3、s Draftfor Development The preparation of this Draft for Development was entrusted to Technical Committee ISE/9, Steel for concrete reinforcement, upon which the following bodies were represented: British Cement Association British Iron and Steel Producers Association British Precast Concrete Federa
4、tion Ltd. Concrete Society County Surveyors Society Department of Transport Federation of Civil Engineering Contractors Institution of Structural Engineers UK Certification Authority Reinforcing Steels Amendments issued since publication Amd. No. Date CommentsDDENV10080:1996 BSI 08-1999 i Contents P
5、age Committees responsible Inside front cover National foreword ii Foreword 2 Text of ENV 10080 5 List of references Inside back coverDDENV10080:1996 ii BSI 08-1999 National foreword This Draft for Development has been prepared by Technical Committee ISE/9 and is the English language verision of Eur
6、opean Prestandard ENV10080 Steel for the reinforcement of concrete Weldable ribbed reinforcing steel B500 Technical delivery conditions for bars, coils and welded fabric published by the European Committee for Standardization (CEN). This publication is not to be regarded as a British Standard. It is
7、 being issued in the Draft for Development series of publications and is of a provisional nature. It should be applied on this provisional basis so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested
8、so that UK experience can be reported to the European organization responsible for its conversion to a European Standard. A review of this publication will be initiated2years after its publication by the European organization so that a decision can be taken on its status at the end of its3year life.
9、 The commencement of the review period will be notified by an announcement in BSI News. According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European Standard, to extend the life of the prestandard or to
10、 withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee ISE/9 at389 Chiswick High Road, London W44AL giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. This Draft for Development has been published
11、to enable ENV10080 to be used in the design of steel reinforced concrete structures conforming to ENV1992-1-1 and to develop data on the properties available from reinforced steels. The UK has consistently objected to aspects of this ENV, particularly items2),3),5) and7) of the foreword of ENV10080.
12、 It is unlikely that the UK will vote positively on any proposed European Standard on this subject until these points are satisfactorily resolved. Cross-references Publication referred to Corresponding British Standard BS EN 10002 Tensile testing of metallic materials EN 10002-1 Part 1:1990 Method o
13、f test at ambient temperature EN 10002-2 Part 2:1992 Verification of the force measuring system of the tensile testing machine EN 10002-4 Part 4:1995 Verification of extensometers used in uniaxial testing EN 10020 BS EN 10020:1991 Definition and classification of grades of steel BS EN 10027 Designat
14、ion systems for steel EN 10027-1 Part 1:1992 Steel names, principal symbols EN 10027-2 Part 2:1992 Steel numbers EN 10079 BS EN 10079:1993 Definition of steel products EN 29002 BS EN ISO 9002:1994 Quality systems. Model for quality assurance in production, installation and servicing EN 45011 BS 7511
15、:1989 General criteria for certification bodies operating product certification EN 45012 7512:1989 General criteria for certification bodies operating quality system certification Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, the ENV title page, pages2
16、to24, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN PRESTANDARD PRNORME EUROPENNE EUROPISCHE VORNORM ENV 10080 April 1995 ICS 77.140
17、.60; 91.080.40 Descriptors: Reinforced concrete, reinforcement structures, prestressing steels, reinforcing steels, metal bars, welded wire lattice, designations, classifications, chemical composition, grades: quality, mechanical properties, dimensions, tests, weldability, delivery English version S
18、teel for the reinforcement of concrete Weldable ribbed reinforcing steel B500 Technical delivery conditions for bars, coils and welded fabric Acier pour larmature du bton Armatures pour bton arm soudables verrous B500 Conditions techniques de livraison pour les barres, les couronnes et les treillis
19、souds Betonbewehrungsstahl Schweigeeigneter gerippter Betonstahl B500 Technische Lieferbedingungen fr Stbe, Ringe und geschweite Matten This European Prestandard (ENV) was approved by CEN on 1995-01-26 as a prospective standard for provisional application. The period of validity of this ENV is limit
20、ed initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the ENV can be converted into a European Standard (EN). CEN members are required to announce the existence of this ENV in the same way as for an EN and to
21、make the ENV available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final decision about the possible conversion of the ENV into an EN is reached. CEN members are the national standards bodies
22、of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretari
23、at: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members. Ref. No. ENV 10080:1995 EENV10080:1995 BSI 08-1999 2 Foreword a) History This European Prestandard has been prepared by SC1, Reinfo
24、rcing steels not for prestressing, of the Technical Committee ECISS/TC19, Concrete reinforcing steel Qualities, dimensions, and tolerances, of which the Secretariat is held by DIN. The work of ECISS/TC19/SC1 started in1988 with the aim to transform into a European Standard (EN) with unified specific
25、ations for the mechanical and dimensional properties of bars, coils and welded fabric of reinforcing steels suitable to meet the requirements for the design of concrete structures. There were nine plenary meetings of ECISS/TC19/SC1 with the participation of in total17 member countries and of represe
26、ntatives of the organizations to which liaison had been established such as CEN/TC250/SC2 (Structural Eurocodes; Eurocode 2: Design of concrete structures), ISO/TC17/SC16 (Steels for the reinforcement and prestressing of concrete), and the European Fabric Reinforcement Association (EFRA). Although s
27、ome fundamental agreements could be achieved (e.g.with regard to the number of strength levels, weldability, size ranges etc.) it was not possible, even after a5year period of debate, to get the approval of a qualified majority of the member countries to the publication of a genuine European Standar
28、d. Thus a proposal was adopted in the meeting of ECISS/TC19/SC1 in May1993 and confirmed by the results of a written enquiry in November1993 to give the present document containing the delivery conditions for the weldable ribbed reinforcing steels B500A and B500B the status of a European Prestandard
29、 (ENV) for the reasons mentioned below. b) Reasons for the publication of a Prestandard ENV10080 In the existing national standards the specifications for reinforcing steels differ to a considerable extent as a result of the differences of traditions and material requirements. Hence it was often dif
30、ficult to obtain the compromises necessary to get unified European delivery conditions. Some of the specifications laid down in the present document were only supported by a slight majority of votes see also item c). One of the main questions was how to attain a close alignment of the material speci
31、fications with the rules for the design of concrete structures covered by the Eurocodes2,4 and8. The decision to publish Eurocode2 as a European Prestandard (ENV1992-1-1 Design of concrete structures Part1.1: General rules and rules for buildings) open for modification and completion within a reason
32、able space of time promoted the decision of ECISS/TC19/SC1 to publish the present document as a European Prestandard too. The lifetime of ENV10080 should be harmonized with that of ENV1992-1-1. This period is necessary to carry out thorough investigations and to collect sufficient experience about t
33、he correlation and compatibility between the material properties to be specified and the criteria for the design and execution of the concrete structures. c) Main items to be rediscussed All interested parties are requested to draw their special attention to the following items which have been contr
34、oversially discussed during the previous meetings of ECISS/TC19/SC1 and shall be reconsidered when transforming ENV10080 and ENV1992-1-1 into European Standards: 1) whether the rules for the design of concrete structures according to Eurocodes2,4 and8 require the standardization of two or of more th
35、an two categories of steel grade B500 with different ductility values; NOTEECISS/TC19/SC1 is in favour of standardizing (eventually in a separate EN) a B500 category with ductility values higher than those specified for B500B if such a category is considered to be necessary in view of the requiremen
36、ts of Eurocode8 (building in seismic regions) or to other applications (e.g.nuclear power stations, marine structures etc.). 2) whether the total elongation at maximum force (A gt ) may be regarded as a more significant characteristic for the evaluation of the service behaviour of reinforcing steels
37、 than the elongation at fracture (A 5or A 10 ), EURONORM 80-85 Reinforcing Steel (not for prestressing); technical delivery conditions, EURONORM 82-1:79 Steel for the reinforcement of concrete with an improved bonding action; dimensions, mass, tolerances. General requirements, and EURONORM 82-2:79 S
38、teel for the reinforcement of concrete with an improved bonding action; dimensions, mass, tolerances. Supplementary specifications for ribbed steelsENV10080:1995 BSI 08-1999 3 3) whether in addition to characteristic values (in the sense of the definition in 3.8) minimum values should be specified f
39、or A gtand R m /R e(see Table 1); 4) whether fatigue strength values should be specified for welded fabric (see Table 1); 5) whether the details of testing the fatigue properties are acceptable (see 6.3.4); 6) whether the permissible deviation from nominal mass should be increased (e.g.to 6%) for sm
40、all product diameters (e.g.up to10mm) (see Table 1 and 6.4.2); 7) whether the certification procedures as described in clause 7 and Annex A should be maintained as the sole possible system for the verification of the conformity of the steels with the specifications of the standard. NOTEThe requireme
41、nts laid down in Annex A are the recommendations of ECISS/TC19/SC1. It is recognized that the Commission of the European Union has the ultimate responsibility for setting the level of the attestation of conformity for the products covered by ENV10080. In accordance with the CEN/CENELEC Internal Regu
42、lations, the following countries are bound to implement this European Prestandard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, UnitedKingdom.ENV10080:1995 BSI 08-1999 4 Contents Page Fore
43、word 2 1 Scope 5 2 Normative references 5 3 Definitions 5 4 Classification and designation 7 4.1 Classification 7 4.2 Designation 7 5 Manufacturing processes 7 5.1 Melting process and type of deoxidation 7 5.2 Manufacturing process of the product 7 6 Requirements 8 6.1 General 8 6.2 Chemical composi
44、tion and weldability 10 6.3 Mechanical properties 10 6.4 Dimensions and mass 11 6.5 Surface geometry 11 6.6 Form and dimensions of fabric 13 7 Assessment of conformity with the specified requirements 13 8 Testing 13 8.1 General 13 8.2 Test methods 14 9 Product identification 14 9.1 Identification of
45、 the steel 14 9.2 Identification of the producer 14 9.3 Identification of the processor of decoiled material 15 9.4 Labelling of welded fabric 15 Annex A (normative) Attestation of conformity by certification 16 Annex B (normative) Methods of testing the properties of reinforcing steel 20 Figure 1 C
46、haracteristics of purpose made fabric 7 Figure 2 Rib geometry of steel B500A (a) and steel B500B (b) 12 Figure 3 Rib flank inclination a, and rib height h 12 Figure 4 Pitch of wires and overhang of single wires 13 Figure 5 Pitch of wires and overhang of twin wires 13 Figure 6 Example of rib pattern
47、of steel B500A with four transverse rib series 14 Page Figure 7 Example of rib pattern of steel B500B with four transverse rib series 14 Figure 8 Identification of the country and producer works 14 Figure B.6 Fatigue stress cycle 21 Figure B.8 Determining the area of the longitudinal section, F R 22
48、 Table 1 Properties of reinforcing steels B500A and B500B of various product forms 9 Table 2 Chemical composition of steels B500A and B500B 10 Table 3 Conditions of testing the properties 10 Table 4 Mandrel diameter at the rebend test 10 Table 5 Nominal diameters for the several steels and product t
49、ypes, nominal cross-sectional area and nominal mass 11 Table 6 Projected rib area f R 12 Table 7 Identification of the country of origin 14 Table A.1 List of product families 16 Table A.2 R e coefficient k as a function of a number (n) of the test results 18 Table A.3 A gtand R m /R e coefficient k as a function of a number (n) of the test results 18ENV10080:1995 BSI 08-1999 5 1 Scope 1.1 This European Prestandard specifies requirements for the chemical composition and the mechanical and ge
