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DRAFT FOR DEVELOPMENT DD ENV 1993-1-32001 Incorporating Corrigendum No. 1 Eurocode 3 Design of steel structures Part 1.3 General rules Supplementary rules for cold ed thin gauge members and sheeting together with United Kingdom National Application Document ICS 91.010.30; 91.080.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW DD ENV 1993-1-32001 This Draft for Development, having been prepared under the direction of the Sector Committee for Building and Civil Engineering was published under the authority of the Standards Committee and comes into effect on 15 July 2001 BSI 22 August 2001 The following BSI references relate to the work on this Draft for Development Committee reference B/525/31 ISBN 0 580 33219 5 Committees responsible for this Draft for Development The preparation of this Draft for Development was entrusted by Technical Committee B/525, Building and civil engineering structures, to Subcommittee B/525/31, Structural use of steel, upon which the following bodies were represented British Constructional Steelwork Association Cold Rolled Sections Association Confederation of British Forgers Department of the Environment, Transport and the Regions Department of the Environment, Transport and the Regions Construction Directorate Department of the Environment, Transport and the Regions Highways Agency Health and Safety cutive Institution of Civil Engineers Institution of Structural Engineers Steel Construction Institute UK Steel Association Welding Institute Amendments issued since publication Amd. NoDateComments 13403 Corr. No. 1 22 August 2001Indicated by a sideline 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m DD ENV 1993-1-32001 BSI 22 August 2001 i Contents Committees responsibleInside front cover National forewordii Text of National Application Documentiii Text of ENV 1993-1-22 w w w . b z f x w . c o m DD ENV 1993-1-32001 ii BSI 22 August 2001 National foreword This publication has been prepared by Subcommittee B/525/31 and is the English language version of ENV 1993-1-31996, Eurocode 3 Design of steel structures Part 1.3 General rules Supplementary rules for cold ed thin gauge members and sheeting incorporating its corrigendum of October 1997, as published by the European Committee for Standardization CEN. This Draft for Development also includes the United Kingdom UK National Application Document NAD to be used with the ENV in the design of buildings to be constructed in the UK. ENV 1993-1-31996 results from a programme of work sponsored by the European Commission to make available a common set of rules for the design of building and civil engineering works. This publication should not be regarded as a British Standard. An ENV is made available for provisional application, but does not have the status of a European Standard. The aim is to use the experience gained to modify the ENV so that it can be adopted as a European Standard. The value for certain parameters in the ENV Eurocodes may be set by CEN members so as to meet the requirements of national regulations. These parameters are designated by boxed values in the ENV. During the ENV period of validity, reference should be made to the supporting documents listed in the NAD. The purpose of the NAD is to provide essential ination, particularly in relation to safety, to enable the ENV to be used for buildings constructed in the UK. The NAD takes precedence over corresponding provisions in the ENV. The Building Regulations 1991, Approved Document A 1992 published December 19911, draws designers’ attention to the potential use of ENV Eurocodes as an alternative approach to Building Regulation compliance. ENV 1993-1-31996 has been thoroughly examined over a period of several years and is considered to offer such an alternative approach, when used in conjunction with this NAD. Compliance with DD ENV 1993-1-32001 does not of itself confer immunity from legal obligations. Users of this document are invited to comment on its technical content, ease of use and any ambiguities or anomalies. These comments will be taken into account when preparing the UK national response to CEN on the question of whether the ENV can be converted into an EN. Comments should be sent in writing to BSI, 389 Chiswick High Road, London W4 4AL, quoting the document reference, the relevant clause and, where possible, proposed revised wording. This document does not purport to include all the necessary provisions of a contract. Users of this document are responsible for its correct application. Summary of pages This document comprises a front cover, an inside front cover, pages i to xvi, the ENV title page, pages 2 to 128 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Sidelining in this document indicates the most recent changes by amendment. 1Available from The Stationery Office, PO Box 29, St Crispins House, Duke Street, Norwich NR3 1GN. 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m DD ENV 1993-1-32001 BSI 22 August 2001 iii National Application Document for use in the UK with ENV 1993-1-31996 w w w . b z f x w . c o m DD ENV 1993-1-32001 iv BSI 22 August 2001 Contents of National Application Document Introduction v 1Scopev 2Normative referencesv 3Partial safety factors and other factorsv 4Loading codesvi 5Reference standardsvi 6Additional recommendationsvii Bibliographyxvi Table 1 Partial safety factors M vi Table 2 Directly reference supporting standards in ENV 1993-1-3vii Table 3 Values of factor kix 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m DD ENV 1993-1-32001 BSI 22 August 2001 v Introduction This National Application Document NAD has been prepared by Subcommittee B/525/31. It has been developed from a a textual examination of ENV 1993-1-31996; b calibration against UK practice, supporting standards and test data. NOTEDesign of cold ed steel sections and sheeting to Eurocode 3Part 1.3 [1] gives a series of worked examples based on ENV 1993-1-31996 and this NAD. It should be noted that this NAD, in common with ENV 1993-1-3 and supporting CEN standards, uses a comma , where a decimal point . would be traditionally used in the UK. 1 Scope This NAD provides ination required to enable ENV 1993-1-31996 to be used for the fire resistant design of buildings to be constructed in the UK. 2 Normative references The following normative documents contain provisions, which, through reference in this text, constitute provisions of this NAD. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 6481964 all parts, Schedule of weights of building materials. BS 6399-11996, Loadings for buildings Part 1 Code of practice for dead and imposed loads. BS 6399-31988, Loadings for buildings Part 3 Code of practice for imposed roof loads. CP 3Chapter VPart 21972, Code of basic data for the design of buildings Loading Wind loads. 3 Partial safety factors and other factors 3.1 Material factors The values for the partial safety factor M for use with ENV 1993-1-31996 should be as given in Table 1 of this NAD. The values for the load factors for acceptance tests are given in 6.10 of this NAD. w w w . b z f x w . c o m DD ENV 1993-1-32001 vi BSI 22 August 2001 Table 1 Partial safety factors M 4 Loading codes The loading codes to be used are BS 6481964 all parts, Schedule of weights of building materials. BS 6399-11996, Loadings for buildings Code of practice for dead and imposed loads. BS 6399-31988, Loadings for buildings Code of practice for imposed roof loads. CP3Chapter VPart 21972, Code of basic data for the design of buildings Loading Wind loads. In using these documents with ENV 1993-1-31996, the following modifications should be noted. a The imposed floor loads of a building should be treated as one variable action to which the reduction factors given in clause 5 of BS 6399-11984 are applicable. b The wind loading should be taken as 90 of the value obtained from clause 4.3 of CP3Chapter VPart 21972. NOTEAlthough it is intended that BS 6399-2 will eventually replace CP3Chapter VPart 2, wind loads for structures designed in accordance with ENV 1993-1-31996 should continue to be determined in accordance with CP3Chapter VPart 2 rather than in accordance with BS 6399-2 until such time as CP3Chapter VPart 2 is withdrawn. In such cases, local wind pressure and suction need not be considered in the design of purlins and sheeting rails. c The design for structural integrity should follow the provisions in 6.2a of this NAD. d Reference should be made to clause 12 of BS 6399-11996 for the determination of accidental loads. Reference in ENV 1993-1-3 DefinitionSymbolConditionValue Boxed ENV value Value for UK use 2.23PPartial safety factor for verification at the ultimate limit state. M0Resistance of cross-section where failure is caused by yielding. 1,101,05 M1Resistance of members and sheeting where failure is caused by buckling. 1,101,05 M2Resistance of net section of bolt holes. 1,251,20 2.33PPartial safety factor for verifications at serviceability limit state. M,ser1,001,00 8.46PPartial safety factor for calculating the design resistance of mechanical fasteners. M2Bolts1,251,35 Rivets1,251,35 Pins1,251,35 Spot welds1,251,35 Lap welds1,251,35 10.2.2.11 Partial safety factor for steel liner trays restrained by sheeting. M2Wide flange in compression1,251,20 10.2.2.21 Partial safety factor for steel liner trays restrained by sheeting. M2Wide flange in tension1,251,20 A.6.4Partial factor for difference in behaviour under test conditions and service conditions. sys1,01,0 标准分享网 w w w .b z f x w .c o m 免费下载 w w w . b z f x w . c o m DD ENV 1993-1-32001 BSI 22 August 2001 vii 5 Reference standards Where ENs are directly referred to by ENV 1993-1-31996, the appropriate BS ENs should be used. The remaining supporting standards to be used for construction with cold ed thin gauge members and sheeting designed in accordance with ENV 1993-1-31996 are given in Table 2 of this NAD. Table 2 Directly referenced supporting standards in ENV 1993-1-3 6 Additional recommendations 6.1 Chapter 1 General a 1.1 Scope Cold ed thin gauge members may be either open or closed and should be made up of flat elements bounded either by free edges or by bends with included angles not exceeding 135 and internal radii not exceeding 5t where t is the material thickness. ENV 1993-1-31995 does not apply to cold ed structural hollow sections complying with EN 10219, for which reference should be made to ENV 1993-1-11992. The designer responsible for the overall stability of the structure should be clearly identified. This designer should ensure the compatibility of the structural design and detailing between all those structural parts and components that are needed for overall stability, even if some or all of the structural design and detailing of those structural parts and components is carried out by another designer. b 1.13 The detailed design of stressed-skin constructions should be in accordance with BS 5950-9. c 1.15 The limitations that do not apply to design assisted by testing are 1 b/t ratio; 2 thickness; 3 material properties. d 1.53 System lines of flanges means mid-lines of flanges. e 1.7.42 To simplify the design rules for torsional and torsional-flexural buckling in 6.2.3 of ENV 1993-1-31996, the convention for member axes differs from that used in ENV 1993-1-11992 and it may also change depending on the design situation. ENV 1993-1-31996 calls up UK supporting standard BS EN 10149-2BS EN 10149-2 BS EN 10149-3BS EN 10149-3 ENV 1090-2DD ENV 1090-2a BS 5950-7 ENV 1991-1BS 6399, CP3Chapter VPart 2a ENV 1993-1-1DD ENV 1993-1-11992 ISO 4997ISO 4997 ISO 1000ISO 1000 BS 5555 a Currently in preparation. a See the note in clause 4 of this NAD. w w w . b z f x w . c o m DD ENV 1993-1-32001 viii BSI 22 August 2001 6.2 Chapter 2 Basis of design a 2.1 General 1 Structures constructed using cold ed thin gauge members and sheeting should be designed to fulfil, with due regard to economy, their intended function and should sustain the design loads for their intended life. The design should also facilitate fabrication, erection and future maintenance. 2 A structure should also be designed so that it should not be damaged by events, explosions, impact or the consequences of human error, to an extend disproportionate to the original cause. Design rules to provide structural integrity by limiting the effects of accidental damage are given in Annex A of the NAD for ENV 1993-1-11992. In construction where vertical loads are resisted by an assembly of closely spaced elements, e.g. cold ed steel framing the tying members should be distributed to ensure that the entire assembly is effectively tied. In such cases the forces for anchoring the vertical elements at the periphery should be based on the spacing of the elements or taken as 1 of the factored vertical load in the element without applying the minimum value of 75 kN or 40 kN to the individual elements, provided that each tying member and its connections are designed to resist the appropriate loading. NOTE 1The above recommendations should be met by the choice of suitable materials, by appropriate design and detailing and by specifying control procedures for production, construction and use as relevant for the particular project NOTE 2Further guidance on s of reducing the sensitivity of buildings to disproportionate collapse in the event of an accident are given in Approved Document A of the Building Regulations [2]. b 2.14P The values of partial factors given in this NAD should be adopted for Construction Clauses I, II and III. c 2.21P 1 Where it is necessary to take account of changes in temperature in the design of a structure, it may be assumed that in the UK the average temperature of internal steelwork varies from –5 C to 35 C. The actual range, however, depends on the location, type and purpose of the structure and special consideration may be necessary for structures in other environments. 2 When designing for the accidental situation in Table 2.1 of ENV 1993-1-11992, the values of 1 and 2 should be determined from Table 4 of the NAD for ENV 1993-1-11992. For the determination of the accidental load Ak, reference should be made to BS 6399-1 where appropriate. The accidental total Ak should be multiplied by a A factor of 1,05 and the GA factor should be taken as 1,05, ex
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