250 EUROCODES PolicyGuidelinesAndProcedures

8/6/2019 250 EUROCODES PolicyGuidelinesAndProcedures

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Document: CEN/TC 250

N 250 F

Ref: 7232: CEN/TC 250

Date: 28 December 2003

To the Members of CEN/TC 250

Structural Eurocodes

POLICY GUIDELINES AND PROCEDURES

FOR CEN/TC 250 STRUCTURAL EUROCODES

NOTE 1 This document is an update of the original document N 250 dated 28 May 1997, revision A dated August 1999

and revision B dated September 2000. It has been specifically adapted for use during the CONVERSION STAGE from

ENV to EN and is generally based on previously issued documents, CEN/TC 250 resolutions, updated CEN rules andcomments and observations from Members. The main changes from the original version are revision of Section 7 (N

250 C), the inclusion of Annexes G, H, J, K (revised in N 250 C), L (revised in N 250 C), M and N (revised in N 250 C),

the inclusion of Annex P in N 250 C and the conversion of the document into electronic format. As this is considered a

"living" document the latter change will enable it to be loaded onto the CEN web-site which, in future, will aid regular

updating.

NOTE 2 This document should be made available to Convenors and members of Project Teams via Sub-CommitteeSecretariat.

NOTE 3 This document has been applied in EN 1990 and EN 1991-1-1, the first EN-Eurocodes.

NOTE 4 Changes made subsequent to N250C are listed after the Foreword.

Revisions:

N 250 - Original 28 May 1997

Rev. A - August 1999

Rev. B - 22 August 2000Rev C 23 November 2001

Rev D 8 May 2002Rev D Rev 1 13 June 2002

Rev E 6 May 2003

Rev E Rev1 21 July 2003

Rev F 28 December 2003

CEN/TC 250 N250 F 28 December 2003 Page 1 of 77


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Foreword to N 250 D

(1) Version D of N 250 dated 8 May 2002 contains changes that focus on the conversion of

ENVs to ENs. It is available at http://138.81.11.44/livelink/livelinkand supersedes version C

dated 21 December 2001, that was also on the Website. The changes recognise theCommissions Guidance Paper L Application and use of Eurocodes, clarify several issues by

revision or by new material and update specific guidance that has been superseded. The page

after the Frontispiece summarises where the changes have been made. The detail in thisForeword is added to emphasise the importance of this version for the satisfactory completion of

Eurocode parts on target.

(2) Guidance Paper L (25 January 2002) expresses the common understanding of the

Commission and the Member States of the Eurocode programme, and therefore complements N

250. In particular it sets out the purposes of Nationally Determined Parameters (2.1) and howthey may be expressed in National Annexes (2.3), when so required by National Provisions.

These recommendations correspond to those in the Foreword of EN 1990 and N 250 D (7.16). Itis important to express the possibilities for national choices in the correct way, using EN 1990 as

a model. Part 3 concerns the use of EN Eurocodes in technical specifications for structuralproducts, a subject not generally developed in N 250 D, apart from 7.6.

(3) The changes to the main text included in N 250 B were made to clauses 7.3-7.9 in order toimprove clarity, to align with Guidance Paper L and to assist user-friendliness. Clause 7.16 sets

out the procedure for the removal of any boxed values used at the ENV stage.

(4) Annex D Order voucher for phase 1 of conversions was deleted in N 250 C, as no longer

relevant.

(5) Annex E Conversion programme with target dates continues to refer to the latest version of

CEN TC 250 N 455, so that the reader can access the latest current information on this topic.

(6) Annex K Common Sections was revised substantially in N 250 C. The common Foreword is

now covered by reference to EN 1990. Tables of recommended contents and model clauses

cover sections 1 and 2. Examples of the application of the models are now included in N 250 D.Separate models and examples are included now for the fire parts, where it is necessary for them

to differ.

(7) Annex LEditorial style and form for the Eurocodes has been revised substantially to make it

shorter and easier to follow, without altering the scope or intentions in N 250 B (22 August

2000). It now contains much more detailed guidance on editorial matters that was agreed in1993. Detailed information on numbering, format and editing was approved at the ENV stage

and remains valid, although not included in N 250. This additional information has been added

to N 250.

(8) Annex M Translations was out of date. It now reflects current agreements described in CEN

BOSS at http://www.cenorm.be/boss/supmat/guidance/gd034.htm

http://138.81.11.44/livelink/livelinkhttp://www.cenorm.be/boss/supmat/guidance/gd034.htmhttp://www.cenorm.be/boss/supmat/guidance/gd034.htmhttp://138.81.11.44/livelink/livelink


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(9) Annex P Examples of the use of Nationally Determined Parameters (NDPs) and NationalAnnexes describes the six types of information that may be given in a National Annex. Itcomplements the framework given in Guidance Paper L.

(10) Further amendments to N 250 will continue to be made direct to the website, which will

indicate when amendments were last made. We would appreciate feedback on this procedureand on any further needs for clarification but it is important that the guidance is essentially

settled so that consistency is achieved as the first Eurocode Parts are finalised in the near future.

H Bossenmayer J F A Moore

Chairman, CEN TC 250 Chairman, CEN TC 250 WG 1

NOTE N250 D Rev 1 contains the changes listed below.



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2. Annex L edited to distinguish examples more clearly and improve alignment with CEN style.Clause 5.2 (2) amended to clarify that an informative annex can be made normative only by

national provisions.

3. Annex M edited to give fuller details of the procedure for translations, especially in relation tohaving three language versions for Formal Vote.

4. Annex N edited to combine the first two lists of TCs requiring liaison, together with additionalTCs.

5. Annex P edited to improve clarity.

Changes implemented in N 250 F 28 December 2003

1. This version of N 250 is shorter as a result of removing the contents of Annexes K, L and M to

a separate document, N 600, to accommodate three-language versions of the common Forewordand the revised guidance on editorial style and translations.

2. It is anticipated that the titles of EN Eurocode Parts in Annex C will be rationalised during

Formal Vote of the first material parts early in 2004.



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CEN/TC250 STRUCTURAL EUROCODES - POLICY GUIDELINES and PROCEDURES

Contents

1. Introduction and purpose of guidelines 8

2. The objectives of the Eurocodes and their status 83. The role of CEN/TC250 (and its elements.) 9

3.1 General CEN responsibilities3.2 Specific responsibilities of CEN/TC2503.3 Meetings and Communication (incl. use of electronic mail)

9

1011

4 CEN/TC 250 Conversion programme and prioritisation 12

4.1 The Statement of Intent4.2 The Mandate, schedule of works and prioritisation programme4.3

Programme and target dates

1212

125. Setting up, briefing and managing project teams 12

6. Conversion from ENV to EN 136.1 General (This section contains the information, which is specific to

work on conversions)

6.2 CEN internal procedures6.3 Sub-committee procedures6.4 Conversion procedure - drafting and editing

13

1313

14

7. Guidance for project teams drafting EN Eurocode Parts. 157.1 The users7.2 Level of technology7.3 Design economy7.4 User-friendliness7.5 Comprehensiveness of scope and text7.6 Organization of EUROCODE parts7.7 Consistency and interdependency7.8 Format of Text - Principles and application rules7.9 Innovative and alternative design7.10 Format of Text - standard sequence of sections7.11 Format of Text - foreword, standard clauses7.12 Format of Text - harmonised editorial style7.13 Editing Panels7.14 Translations from the working language7.15 Relationship with National Regulations7.16 Removal of boxed values7.17 Safety classification/reliability differentiation7.18 Quality Assurance, control and management7.19 Liaison/compatibility with other standards

15

1515

16

1616

17

17

1818

19

1919

19

1920

20

2021



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ANNEXES

A

B

CD

E

FG

H

JK

L

MN

P

Responsibilities of Chairmen and Secretariats of TCs

Conversion Mandate - BC/CEN/10-90 Addendum No. 3

Schedule of titles and scopes for EN stageVoid

Conversion programme with Target Dates

Establishing and Managing Project TeamsPro forma brief for Project Teams

Standstill

Format of implementing National Standards (incl. Informative National Annexes)Common Sections (see N 600)

Editorial style and form for the EUROCODES (see N 600)

Translations (see N 600)CEN/TC250 Liaisons

National Forewords and National Annexes

22

33

3954

54

5557

61

6365

66

6768

71



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1 Introduction and purpose of guidelines

(1) The construction industry, together with the Commission for the European Union, EFTA

and CEN, are expecting and hopeful of rapid progress towards the publication of EUROCODEparts with EN status. These should be clear and practical, in the pursuit of the objectives referred

to in 2.

(2) The EUROCODES will achieve full acceptance and success by achieving strength from

their quality and ability to meet the expectations of them, irrespective of their status through

legislation or regulation.

(3) These guidelines reaffirm the objectives, the principles, and the means by which these are to

be achieved, and record the administrative and procedural steps involved. CEN/TC250welcomed the establishment of the guidelines, and confirmed the principles included.

(4) These guidelines (including the Annexes) should therefore be followed by Project Teams

converting ENVs to ENs by amending/editing. The Sub-Committees and the TC itself will haveregard to these principles in their overview and management of the work.

(5) In respect of the drafting, editing and publication of documents (at ENV or EN stage) theobjective is to quickly achieve what is good and practicable, rather than incur delays by seeking

theoretical perfection. Repeated and belated attempts to incorporate last minute research

results or alternative ideas must be avoided.

(6) The conversion from ENV to EN must be a simpler and more constrained process than the

original drafting of the ENV, and must proceed effectively in accordance with the agreed programmes and procedures. The experience gained from the drafting, experimental use and

application together with comments received during and at the end of the ENV period shouldfacilitate conversion to EN, using the ENV as the first draft, within programme.

(7) The Annexes give details of the relevant CEN procedures and rules for the work of

CEN/TC250, and the agreed procedures of the TC for the management of the work.

2 The objectives of the Eurocodes and their status

(1) As stated in the Commission's original objectives, the intention of the EUROCODE

programme is to establish a set of common technical rules for the design of building and civilengineering works, which will ultimately replace the differing rules in force in the variousMember States.

(2) The Special Agreement between CEN and the European Commission (BC/CEN/03/89)specified that the EUROCODES are intended to serve as reference documents to be recognized

by the authorities of the Member States for the following purposes:-



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a) As a means of compliance of building and civil engineering works with the Essential

Requirements as set out in Council Directive 89/106/EEC, particularly Essential RequirementNo.1 - Mechanical resistance and stability and Essential Requirement No.2-safety in the case of

fire.

b) As a basis for specifying contracts for the execution of construction works and relatedengineering services.

NOTE. relates to Council Directive 71/305 Public Procurement.

c) As a framework for drawing up harmonized technical specifications for construction products.

In addition, the EUROCODES are foreseen to:-

d) Improve the functioning of the single market for products and engineering services, by

removing obstacles arising from different nationally codified practices for the assessment ofstructural reliability.

e) Improve the competitiveness of the European construction industry, and the professionals and

industries connected to it, in Countries outside the European Union.

(3) The EUROCODES are technical documents which are written by technical people for use

by technical people in various sectors of the Construction Industry including designers,

regulators and approvers, producers of components and materials, specifies, constructors andeducators. CEN/TC250 aims to encourage the optimization of input and comment from all

potential users. All sectors in each Member State should be provided with the ongoing

opportunity to make input to their National Standards Body and hence, via National TechnicalContacts and National Delegations, to CEN/TC250 and its SCs. The TC250 has also establishedcontacts with recognized European professional and trade bodies.

(4) It is important to recognize that there is a clear and vital distinction between design codesand national regulations. The relationship between them has caused concern, and led to lengthy

discussion. CEN/TC250 is fully aware that the harmonization of National Regulations is notwithin the scope of the National and European Standards Bodies. CEN/TC250 is responsible for,

and committed to, the formulation of documents, which can be implemented WITHOUT

AMENDMENT in all Member States. These Policy Guidelines point the way to resolving thismatter by combination of EUROCODE drafting and action at National level (see Section 7.15).

3. The role of CEN/TC250 (and its elements)

3.1 General CEN responsibilities(1) In 1994 CEN/CS issued a statement, which confirms the responsibilities of each part of theCEN hierarchy, including Technical Committees, their Chairmen and Secretariats. The relevant

extracts are attached at Annex A.



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(2) For the purposes of these guidelines for CEN/TC250, the position may be summarized as

follows:

a) CEN/TC250 AND ITS CHAIRMAN. It is the responsibility of CEN/TC250 and itsChairman to manage all the work, including establishment of general policies, programmes

and strategies for the structural EUROCODES, and to oversee their implementation. Also to

support and guide the Sub-Committees in achieving those policies objectives in the draftingwork.

b) COORDINATION GROUP. The Coordination Group continues to be active in the areas oftechnical and programme coordination increasingly as the work of conversion from ENV to

EN progresses, so that TC250's policies are implemented in a consistent and coordinated

way. The CG addresses technical issues (including, for example, the consistent treatment of values), and will continue to have a vital role to play in this and in monitoring progress

and advising TC/250. The Coordination Group has established Horizontal Groups for

Bridges and for Fire and has a coordinator for definitions and symbols. The rapid responserequired during PTs work on conversions may need special actions by the CG.

c) SUB-COMMITTEES AND THEIR CHAIRMEN. The responsibilities of Sub-committees

and their Chairmen are to undertake and manage the work delegated to them by TC250within their Terms of Reference and agreed timescales. They have a vital responsibility for

establishing technical policies, strategies and coordination of matters exclusive to their work

(without overriding established TC250 general policies, etc.) but must refer wider matters tothe TC or CG. They also have responsibility for liaison and cooperation with the other

TC250 SCs, related TCs in CEN, and other European and International Standards

Organizations, as well as with relevant European professional and trade Associations.

d) PROJECT TEAMS. Project Teams comprise recognized experts in the relevant field of

work producing agreed or consensus drafts, thus warranting the confidence of TC250 in thetechnical validity of their work, but it is important for PTs to follow these guidelines as the

agreed policies of CEN/TC250. This requirement should be included in PT's Terms ofReference provided by the SC at the time they are established. If difficulties arise, these

should be reported to the SC or SC Chairman for consideration and reference to TC250 (or

CG) when necessary.

3.2 Specific responsibilities of CEN/TC250(1) The European Commission and CEN have recognized on several occasions that it is vitallyimportant to achieve coherence in the European Standards system, and in terms of structural

design there must be consistency across materials/products so as to avoid public safety being

compromised between materials/products or types of construction, particularly in times ofcompetitive pressures. Consistency should not inhibit or prevent innovation, but the

maintenance of an adequate safety regime is a prime necessity



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(2) The Special Agreement between CEC and CEN (reference BC/CEN/03/89) states:-

With a view to the realization of the existing work programme and its further development, CEN

will set up a Technical Committee 'Structural EUROCODES' with overall responsibility for all

CEN work on structural design codes. It is understood that no structural design codes will be

prepared within other CEN Technical Committees.'

(3) CEN has formally accepted and established this principle by means of resolutions of BT and

the former BTSI. This has been strongly confirmed at the BTSI meeting in May 1995 when itwas reiterated that a proper safety regime can only be achieved by CEN/TC250 having exclusive

responsibility for structural design/calculation rules. This implies that almost all rules relating to

structural reliability and safety will be contained in the Structural EUROCODES. It mayexceptionally be convenient, or even necessary, for these rules to be published in a product

standard (for example, when the EUROCODES are not planned to cover a particular specialized

subject, or it is technically necessary to bind the design rules into the performance specificationin a product standard). But it is recognized that CEN/TC250 must monitor and agree these

exceptional cases.

(4) The CPD as a New Approach Directive requires that construction product standards areperformance based, i.e. the performance criteria govern the design or validation of the product.

The achievement of structural safety is crucial (reference to the CPD, Essential Requirement No.

1, mechanical resistance and stability). In order to undertake design of products on aperformance basis, there is no general alternative to the application of codified design rules and

in the European context, these will be the EUROCODES.

(5) In addition, for a product or range of products simplified design procedures may be

developed. It is essential for these to be on a consistent basis, so as to provide consistentreliability, and this is achieved by reference to the EUROCODES. Whilst the EUROCODES are

in the ENV status, it is appreciated that this exclusivity may be difficult to operate.

(6) However, after conversion and publication as ENs the EUROCODES will be fully placed to

cover these aspects, within the established policy of consistency of the treatment of safety, under

the control of CEN/TC250, subject only to decisions on the application of a period of co-

existence.

3.3 Meetings and communication

(1) Whenever possible work of the TC, SCs and PTs shall be conducted by correspondence. Use

of electronic document transmission is encouraged, e.g. fax and e-mail. Each action shall be

given a response deadline. Electronic communication is particularly encouraged for use byProject Teams to assist in rapid work progress and compliance with tight target dates.

NOTE CEN is undertaking a study of the optimum computerized drafting and transmission

systems, which will be distributed to CEN/TC250 when completed.

(2) Meetings shall be held only when necessary to have face-to-face discussion in order to reach

decisions and agree the way forward. The dates for meetings should be arranged to meet agreeddeadlines in the work-item programmes, particularly published agreed Target Dates.



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4 CEN/TC250 Conversion programme and prioritisation

4.1 The Statement of Intent

(1) At its meeting in October 1994 CEN/TC250 agreed a Statement of Intent setting out the

initial priority documents for the conversion stage. These comprised EUROCODES necessary

for the structural design of buildings and included Basis of Design, Loading and General DesignRules including those for Fire and Seismic Resistance. It also highlighted the requirement for

early action on Bridge Parts. The Committee for the Structural EUROCODES declared its

determination to make rapid progress in the conversion of the whole suite of EUROCODES intothe final EN documents which will be implemented by members in place of national design

standards.

4.2 The mandate, schedule of works and prioritization programme

(1) Subsequently, agreement was reached for the conversion stage of ENVs to ENs and the

Commission issued Amendment No.3 to Mandate BC/CEN/11-89 on 31 March 1998 (SeeAnnex B). The Schedule of Titles and Scopes of ENs, as agreed by TC 250, is appended as

Annex C.

(2) After extensive discussions a prioritization schedule was agreed and the first Order Voucher

under Amendment No .3 was received in April 1998 to cover the First phase of conversions.

(See Annex D). In accordance with the agreement with the Commission officers, similar OrderVouchers for phases two and three were received in March 1999 and February 2000 and the

O.V. for phase four is expected in February 2001.

4.3 Programme and target dates(1) The division into phases has been determined by taking account of the TC250 Statement of

Intent, the availability of resources, inter-relationships between various Parts, and forecast dates

of 2-year Enquiry results. Detailed programmes for each work item have been determined by

relevant Sub-committees, and the overall coordinated programme agreed by TC250. Theprogramme is subject to continuous monitoring and review by TC250. (See Annex E for latest

update)

5. Setting up, briefing and managing project teams

(1) In anticipation of the result of the 2-year Enquiry the appropriate Sub-committee shouldcommence the procedure for the establishment of a Project Team of suitably qualified and

experienced experts in order to commence conversion work as soon as possible after receipt of

the Order Voucher (O.V.). Contracts for experts will be executed by the CEN/TC 250

Secretariat (BSI) in the established format immediately after the O.V. has been received and theProject Team agreed by Resolution. Each Sub-committee, through its Chairman and Secretariat,

is responsible for briefing, managing and monitoring the activity and progress of its Project

Teams. (See Annexes F and G)



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6. Conversion from ENV to EN6.1 General(1) This section contains the information, which is specific to work on conversions.

6.2 CEN internal procedures(1) After 2 years of the 3-year life of the ENV the Central Secretariat (CEN/CS) will write to allMember Countries requesting a national reply within 6 months (The 2-year enquiry). The reply

may be any of the following:-

a) Conversion of existing ENV into an EN after formal vote.

b) Continue with existing ENV as ENV for a further 2 years.

c) Conversion into EN after formal vote based on updated ENV prepared by a technicalbody (i.e. TC or SC).

d)

Replace existing ENV by a revised ENV prepared by a technical body (TC or SC)e) Withdrawal of the existing ENV.(2) CEN/TC250 will decide the result of the Enquiry after receipt of replies and approve an

appropriate resolution. (In addition, in the case of EUROCODES the wishes of the Commission

and EFTA will inevitably be considered)

(3) A decision to convert an ENV to EN immediately imposes Standstill. (See Annex H)

6.3 Sub-committee procedures(1) Sub-Committees should set up or adjust existing programmes of work so as to achieve the

target dates in the Mandates/Order Vouchers. These will be monitored by CEN/TC250.

(2) Sub-committee meeting dates shall be arranged to accord with the requirements of the agreed

Works Programmes

a) Whenever possible the conversion stages should run in parallel, in order to minimize the

time to Formal Voting stage, e.g. early commencement of, translations and equivalence

checks.

b) By implementing the policy of minimum change an EN enquiry will not be necessary and

the amended document should proceed directly to formal vote. Ongoing informal

consultation, particularly with National Technical Contacts (see Annex G, para.5.4), is anessential part of this fast-track procedure.

c) Contentious matters arising from the ENV enquiry should be identified early, and resolvedduring the early stages of EN preparation (including if necessary with TC250 action) beforethe documents reach EN voting stage.



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d) The detailed procedures and timetable for the works are to be proposed by the Sub-

Committee, for report to CEN/TC250 in accordance with these Guidelines and Procedures.

e) The SC is responsible for establishing a Project Team for confirmation by CEN/TC250 (by

resolution) to undertake the work of preparing the prEN for Formal Voting. The SC isresponsible for the work of the PT and shall keep an overview of its work and be responsible

for ensuring the coordination of its technical work and progress with other related PTs

within or outside the SC scope. (See Annex F)

f) The PT is to be given clear terms of reference in terms of scope of work, procedures to be

followed, target dates for defined stages and liaisons to be maintained. (See Annex G)

g) The PT must make regular reports on progress and any difficulties to the SC (or the SC

Chairman in urgency).

h) The SC shall keep TC250 and its Coordination Group informed on progress and any

difficulties. Any programme changes must be agreed by the TC who continue to beresponsible for overall coordination of the whole EUROCODE programme

6.4 Conversion procedure - drafting and editing

(1) The process of conversion from ENV to EN should commence as soon as practicable after

the result of the '2- year Enquiry' is available. Initially this may be undertaken by an 'Ad hocpanel' for the SC in anticipation of the formal Order Voucher. The initial process will be the

examination and categorization of National comments submitted under the Enquiry, together

with any comments received from Members during the ENV period.

(2) The Project Team for the conversion should be established by the SC in accordance with theagreed CEN/TC250 procedure (See Annex F) in order to commence the conversion work as soonas practicable after the Order Voucher is released. The PT must be given full terms of reference

by the SC including clearly defined target dates and reporting requirements (See Annex G).

(3) To speed up the process, the search for experts for inclusion in the PT should commence in

advance of authority to proceed with the work. The PT Members will be required to enter aformal contract with BSI (acting on behalf of CEN).

a) The conversion from ENV to EN is a simpler and more constrained process than the originaldrafting of the ENV.

b) There should be no change to the title or scope (see annex C) without the prior approval ofCEN/TC 250.

c) The Project Teams for the conversions should ensure that draft EN text complies with thecriteria in Section 7 of these Policy Guidelines.



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d) There should be no technical changes to the ENV text unless the national comments haveidentified a significant safety, usability or coordination problem. Potential changes shouldonly be adopted after the Project Team has accepted the validity of the comments, having

regard to these TC250 Policy Guidelines.

e) The PT shall maintain a record of the action taken on each comment received and shallreport accordingly to the SC. Ultimately all National Standards Bodies, and others, who

have commented, should receive a note of the response to the comments they have

submitted.

f) Matters related to Basis of Design, Quality Assurance/Management, safety

differentiation/classification of structures, and material-independent matters may be referredto TC250 if not already covered in these Guidelines.

g) Lack of availability of supporting standards should not delay publication of the ENEUROCODES.

(4) Each EUROCODE should make reference to the standards needed to make it operational. In

the early stages, where the CEN standard is not yet available, other published and generallyavailable documents may be referred to if they are agreed as appropriate by the SC. Otherwise

references may be by Informative National Annexes (Annex J).

7 Guidance for project teams drafting ENs7.1 The users

(1) It should be assumed that the principal users of EUROCODES will be design engineers whoare appropriately qualified and experienced in the particular field of work. However, other users

may include; regulatory personnel, producers of structural components and materials, contract

specifiers, building and civil engineering constructors/contractors, educators and trainers,drafters of related standards as well as authors of guides handbooks and computer programmers.

7.2 Level of technology(1) The EUROCODES shall be based on well accepted and of proven/established current

practice (State of the Art). Input from expert bodies (for example FIB, ECCS) may make an

important contribution. Research/testing or trial calculations may be helpful (and sometimesnecessary) to harmonization different current practices. Only in exceptional circumstances, e.g.

where significant safety issues are concerned, shall recent non-applied research results be taken

into account. Novel/unproven methods shall not be included, and therefore no content shall bedependent on newly commissioned or future basic research.

7.3 Design economy

(1) EUROCODES are to give the basis for the design of safe structures at acceptable cost. Inorder to achieve realistic and effective acceptance of the EUROCODES, structures designed

using them should not cost significantly more, over their design life, than those designed tonational standards, unless an important principle of acceptable safety has been identified and

agreed e.g. a change in the level of reliability.



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7.4 User-friendliness

(1) Every EUROCODE part should be organized and drafted to make it understandable and

logically applicable by the anticipated user (see 7.1) in everyday use. In this regard, the views of

the National Technical Contacts (NTCs - see 6.2d and Annex G para. 5.4), and the nationalresponses from the trial use of the ENV documents must be respected, and only set aside when

other extremely strong reasons are accepted by the SC.

7.5 Comprehensiveness of scope and text(1) The Scope Clause of each EUROCODE part shall be precisely detailed and make specific

reference to any exclusions and limitations.

(2) Each EUROCODE part is to be comprehensive in its coverage of the PRINCIPLES in its

particular subject area. The APPLICATION RULES should embrace at least 90% of

construction in its field. Exotic, novel, or extremely unusual forms of construction or designconditions will not be covered, or will be stated to require additional consideration by the

designer. Although the documents may be lengthy (for example, when treatment of alternative

forms of members, with alternative design methods, are included), it should be appreciated thatdesign aids, in the form of manuals/handbooks/ computer programs, etc. will be produced, oftenby others, and will be an important part of the application of the EUROCODES. Background

material, worked examples, very specialized applications and non-essential informative narrative

material should be removed and possibly included in such support items.

(3) The user should be assisted to use the EUROCODES effectively. Therefore any helpful

guidance should be provided where possible as to which parts of the text will be relevant tovarious forms of construction, types of structure, or level of precision in the calculations.

7.6 Organization of EUROCODE parts

(1) All the material-related structural EUROCODES (Eurocodes 2, 3, 4, 5, 6 and 9) are

organized on the following basis:

- Part 1 deals with General Rules, including structural fire design rules, which apply to all

structures unless specifically omitted or amended in supplementary parts for specific

structures- Parts 2, 3, 4, etc. are supplementary to Part 1 and contain additional and varied rules for

specific applications, e.g. particular types of structure (e.g. buildings, bridges, silos.)

NOTE in some EUROCODES Part 1 also deals with rules for buildings.

(2) EUROCODE: Basis of Structural Design (pr EN 1990) covers the general designphilosophy, basis of design, common non material-related aspects and common terminology and

symbols.

(3) EUROCODE 1: Actions on structures covers general actions (loading) applicable to allstructures in Part 1 and additional loadings for specific structures (bridges, silos and tanks and

loads from machinery) in further Parts.



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(4) EUROCODE 7: Geotechnical design deals in Part 1 with general rules Geotechnical

design for structures and in Parts 2 and 3 with geotechnical field tests and laboratory tests toassist design.

(5) EUROCODE 8: Design for earthquake resistance, is organized on a similar basis to the

material-related EUROCODES.

7.7 Consistency and interdependency

(1) All EUROCODE Parts have interdependency with other Parts and are not intended to be

self-sufficient. Each EUROCODE Part must be fully consistent with other parts of the same

EUROCODE and with related parts of other EUROCODES, as well as with EN 1990"Eurocode: Basis of Structural Design" in terms of technology, terminology and symbols.

(2) Repetition of clauses must be avoided; instead use precise unambiguous cross-referencesquoting the full clause/sub-clause number.

(3) To facilitate consistency between Parts, liaison between Project Teams will be essential

when clauses dealing with similar or related subjects are being considered, e.g. serviceabilitycriteria.

7.8 Principles and application rules

(1) The PRINCIPLES given in a EUROCODE Part shall only comprise:

- general statements and definitions for which there is no alternative throughout the scope of

the Part- as well as requirements and analytical models for which no alternative is permitted unless

specifically stated.

They should therefore be brief statements of all-embracing fundamentals.

The PRINCIPLES are to be identified in EUROCODES by use of (P) after the paragraph

number.

(2) The APPLICATION RULES given in a EUROCODE Part are generally recognized rules,

which are recommended methods of achieving the PRINCIPLES and satisfy their requirementsfor the whole or a specific field within the scope of the Part. In the case of a specific field the

limitations shall be clearly given.

(3) It is permissible to use alternative design rules different from the APPLICATION RULES

given in the EUROCODE Part, provided that it is shown that the alternative rules accord with the

relevant PRINCIPLES and are at least equivalent with regard to the structural safety,

serviceability and durability which would be expected when using the EUROCODE.



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NOTE 1 If an alternative design rule is substituted for an application rule, the resulting design cannot be claimed to

be wholly in accordance with the Eurocode, although the design will remain in accordance with its Principles. When

the Eurocode is used in respect of a property listed in an Annex Z of a product standard or an ETAG, the use of an

alternative design may not be acceptable for CE marking.

NOTE 2 The Coordination Group has an ongoing role in reviewing consistency of implementation of this

arrangement particularly in conversions from ENV to EN.

7.9 Innovative and alternative design

(1) It is particularly important to ensure that the European construction industry maintains or

improves its share of the European and worldwide market in design services and structural products and materials. The objective of the EUROCODES is to provide common structural

design rules for everyday use for whole structures and for design of component products.

(2) Manufacturers have expressed the importance of encouraging the design of innovativeproducts and of ensuring that the EUROCODES do not inhibit such development. Project Teams

should therefore ensure that the design of innovative products is covered and facilitated in the

EUROCODES, which should allow alternative designs rules (see 7.8).

7.10 Format of text - standard sequence of sections

(1) CEN/TC250 has agreed that the EUROCODE Parts will adopt the following standard

sequence of sections unless it is agreed that this will not be appropriate:-

Foreword (Informative)

Section 1 General

Section 2 Basis of Design (material specific)

Section 3 Materials

Section 4 Durability

Section 5 Basis of Structural Analysis

Section 6 Ultimate Limit States

Section 7 Serviceability Limit States

* Section ? Details/Connections

* Section ? Special Considerations

* Section ? Execution

* Section ? Design Assisted by Testing* Annexes (Normative)

* Annexes (Informative)

NOTE Sub-committees are required to advise TC250 or CG when Sections marked * are used, giving number, title

and brief scope. H G Fire will determine sequence of sections for Fire Parts.

7.11 Format of text - foreword, standard clauses



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(1) CEN/TC 250 has agreed the standard clauses, which should form the beginning of theForeword to all Parts of all EUROCODES. These are set out in Annex K together with

background notes and extracts from the rules. Any additional informative, helpful clauses

specific to the particular Part should be inserted before the final standard paragraph which should

be followed by an invitation to submit constructive comments to the NSB.

7.12 Format of text - harmonized editorial style(1) CEN/250 has agreed a harmonized editorial style which is based on the CEN PNE rules

(with agreed derogation), and on the experience of drafting and coordinating the ENV

documents. This is to be adopted in every EUROCODE Part, unless TC250 agrees otherwise forexceptional circumstances. (See Annex L)

7.13 Editing committees(1) For the duration of the conversion to EN stages each SC should establish an Editingcommittee comprising a member of the SC Secretariat (as convenor) and 3 technical

representatives whose mother tongues are English, French and German respectively. TheEditing committee will monitor draft texts to ensure compliance with PNE rules as modified by

ISO Regulations, TC250 derogation, agreed TC250 format and Harmonized Editorial Style.

They should also check drafts for technical equivalence of the 3 language versions

(2) The Comit de Lecture (CDL) within CEN, comprising one AFNOR, one DIN and one BSI

representative (usually a staff editor) and the TC/SC Secretary shall receive copies of the 3language versions as prepared for EN Formal Vote. When the CDL works on a document, it

generally works only by correspondence and sends comments to the Secretary before the FormalVote deadline. This action does not detract from the responsibilities of the TC/SC Editing

Committee. The CDL generally only examines a small random selection of final documents.

7.14 Translations from the working language(1) The working language of CEN/TC250 is English, however, translations into French and

German will be required before the final version is submitted for Formal Vote as an EN. (SeeAnnex M) Translation into any other European language is a matter for the Country concerned

and shall be prepared from the definitive texts as circulated by CEN/CS following the Formal

Vote.

7.15 Relationship with National Regulations(1) The role of national regulations has not changed. The method of specifying the standard(s)

which may (or must) be used for particular situations differs between Member States. In some (for

instance UK) there is a very 'permissive' regime, which gives flexibility of choice of design method

but also identifies certain standard(s) which are 'deemed to satisfy' the regulations - these haveusually been established national codes or standards, and will become progressively the

EUROCODES (even at ENV stage in one or two cases).

(2) At the other extreme, some Member States (for example Italy and Spain) have the relevant



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standard enshrined in the law, so that the introduction of the EUROCODES will need a change in

the national law. The steps to be taken to adopt or recognize the EUROCODES will vary accordingto the national situation because the harmonization of national regulations is not in prospect and is

outside the scope of the National and European Standards bodies. It is expected that, in accordance

with CEN rules and agreements, the EUROCODE texts approved by CEN will be published by the

NSBs, without variation from one Member State to another. This is the objective of 'harmonization',and this is the means of achieving the removal of barriers to trade (in services or products.)

7.16 Removal of boxed values

(1) The boxed values in the ENVs were adopted as an interim expedient with a view to total

removal prior to publication of ENs. Total removal and replacement by common agreed values tobe used in all Member States is not fully achievable until there is a harmonization of national safety

regulations. The European Commission has published Guidance Paper L on Application and Use

of Eurocodes. It provides for the use of a Nationally Determined Parameter (NDP) where anational choice is left open in a EN-Eurocode about values (where symbols are given in the EN-

Eurocodes), a set of classes or alternative procedures permitted within the EN-Eurocodes. CEN/TC

250 has agreed that Project Teams will take the following action to remove all boxed values:-

- "Boxed values" which do not relate to safety levels and differences should, in the EN-

Eurocodes, be replaced by fixed values or methods.

- "Boxed values" which relate to safety levels and differences should be replaced, in the EN-

Eurocodes, by symbols, sets of classes or sets of alternative methods (i.e. Nationally DeterminedParameters). Where relevant, the range of possible national choice should be given for

information. Boxed values which have an influence on the level of serviceability or durability

should be handled in the same way.

(2) The types of information that may be included in a National Annex are given in the common

Foreword for EN-Eurocodes, see EN 1990. Examples of the use of NDPs and the National Annexare given in Annex P. The wording to be used to refer, in Notes, to National Annexes is given in

Annex L.

7.17 Safety classification/reliability differentiation

(1) It is clear that these issues are important to the design process in some Countries as the National

requirement for safety on construction works is based on such practices. This is reflected in someNational Application Documents to ENVs. As no generally accepted approach has been developed

for the first phase of conversion to EN, such concepts may be adopted by individual Member States

under the arrangements set out in 7.15.

7.18 Quality Assurance, control and management(1) The achievement of predicable and adequate levels of quality in construction is an objective,

which is receiving increasing attention in Europe. As there is no generally accepted framework at present it is difficult to produce sensibly detailed content. It is not the role of CEN/TC250 (or

EUROCODES) to define such levels, nevertheless, where relevant, simple statements of assumptionsmade in this context must be included.

(2) EUROCODE Parts are permitted to refer to QA policies in the construction process as a whole

bearing in mind that they could become part of a general QA/Quality Management System.



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EUROCODES are directly concerned with the design phase of construction, so at this stage they

should not venture into detailed treatment of the subject. Statements of the level of workmanship andsupervision assumed for the purposes of design must, of course, be included.

7.19 Liaison/compatibility with other standards(1) CEN/TC250 has the responsibility to ensure that adequate and effective liaisons are maintained

with other CEN Technical Committees, and these liaisons are normally carried out by the relevant

SC. The objective is to mutually achieve compatibility with other relevant and related standards andto obtain essential information for EUROCODES.

(2) The Structural EUROCODES provide a consistent set of design rules for all forms of buildingand civil engineering works using the full range of materials in common use. They deal with the

design of whole structures comprising interconnected elements of structure thus providing

consistency of resistance, reliability and integrity throughout. EUROCODES are equallyappropriate for design of single products (structural elements) which are manufactured to be

permanently incorporated into building and civil engineering works and for individual load-bearingproducts.

(3) CEN/TC250 and its sub-committees are required to establish active liaison (or 'Modes of

Cooperation') with other TCs responsible for performance standards for products under the CPD

(harmonized standards) and with those dealing with material specifications and characteristics.Liaison is also necessary with others (not necessarily within scope of CPD) where verification of

reliability is required by calculation. Monitoring and reporting liaison activities are essential

activities of all sub-committees and the TC itself.

(4) In summary, product and material TCs relate to Structural EUROCODES:

- as a means of verifying compliance of individual products (elements of structure),

- to achieve consistency of reliability etc, of inter-related products to be used in a single

structure,

- to mutually agree consistent material property descriptions, characteristics and values,

- to demonstrate consistency of reliability to procurers and regulators under safety and durability

requirements,

- to improve functioning of the single markets and remove barriers inherent in having a variety ofdifferent national design codes.

(4) Annex N, sets out a schedule of TCs (in CEN and ECISS), which have relationships with

CEN/TC250 for the above purposes. The levels of coordination vary by need and cover jointworking, full exchange of documents and drafts, common membership, consultation as required,

exchange of correspondence, etc., as appropriate.



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ANNEX A

Responsibilities of the Chairman

of a Technical Committeeor Sub-committee

Drafted by CEN Central SecretariatDirectorate Standards Programme - Training Tools and Support Unit



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Contents

1 Definition and objective................................................ 24

2 Applicable rules 24

3 Associated process(es) . 24

4 Management of a Technical Committee .. 24

5 Management of meeting ... 25

6 Administrative responsibilities . 26

7 Policy guidance 26



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1 Definition and objectives

(1) The Technical Committee is in charge of the programming and planning of technical work in th

form of a Business Plan, for the monitoring and the execution of the work in accordance with the agreedBusiness Plan and for the management of the standards making process, including the respect of CEN's

policies (e.g. PNE-Rules, Editing Committee, availability and coherence of the three language versions

and the consensus building amongst all interested parties represented through the CEN members.

(2) The Chairman of a Technical Committee is responsible for the total management of the activities o

the Technical Committee.

(3) Specifically the Chairman

- is appointed by the Technical Committee on the proposal of the Secretariat for a period not

exceeding six years, but with the possibility of a three year extension;

- is accountable to the Technical Board (BT);

- must act impartially, divesting himself of a national point of view;

- has no voting rights.

2 Applicable rules

(1) CEN/CENELEC Internal Regulations - Part 2: Common rules for standards work

- subclause 2.3.3: Appointment and responsibilities of Chairman.

(2) CEN Technical Board standing resolution(s)

- resolution CEN/BT 79/1996: CEN Optimizing - Endorsement of procedures by BT.3 Associated process(es)

(1) Technical Committees Business Plan (PROGR/BP/TC).

4 Management of a Technical Committee

(1) The Chairman shall

- support the Technical Committee Secretariat in preparation and maintenance of Business Plan

and be in a position to explain to the "Strategic Review Panel" theBusiness Plan and be in aposition to explain to the "Strategic Review Panel" therationale put forward by the Technical

Committee in the context of the Business Plan.

- manage, with the support of the Technical Committee Secretariat, the activities of theCEN/TC 250 N250 F 28 December 2003 Page 24 of 77


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Technical Committee to obtain approval on Business Plan;

- ensure that the Technical Committee works according to the Technical Committee BusinessPlan agreed;

-

watch over that all decisions necessary to ensure adequate progress are taken in accordancewith the appropriate procedures (resolutions and rules of procedure of CEN, Vienna

Agreement, derogation from standstill,):

- ensure that a clear task is given to each Working Group including detailed specifications andplanning for any standard to be drafted;

- ensure that the work of the Technical Committee, (Subcommittees) and Working Groups isconducted and co-ordinated to achieve continuity and efficiency in that work with particular

reference to the achievement of target dates;

-

decide with Technical Committee Secretary, if drafts correspond to the work specified by theTechnical Committee in the Technical Committee Business Plan and are ready for direct CEN

enquiry;

- manage periodically review of the Technical Committee Business Plan as aconsequence ofevolution of the environment or evolution of work programme (new items, delay, ...);

- qualify according to the strategic analyses in Technical Committee Business Plan, the needsof a sectoral body and take contact with Technical Committee Chairpersons concerned tobuild the core assembly for co-ordinating and communication;

- work closely with the Technical Committee Secretary, providing guidance asappropriate;

- provide support to the Technical Committee Secretary for implementation and operation ofexploitation rights assignment system including:

- being informed on procedures;- advising and supporting the TC Secretary to resolve difficult situations.5 Management of meeting


- guide and control discussion in order to reach balanced and prompt decisions;- seek consensus, preferably unanimity for all decisions;- overrule immaterial objections while ensuring that account is taken of minority views in

order to guide and control discussion towards making progress;- ensure that all points of view are adequately summed up so that they are clearly understoodCEN/TC 250 N250 F 28 December 2003 Page 25 of 77


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- by all present to avoid reopening subjects at later meetings or via subsequentcorrespondence;

-

ensure that all decisions are clearly formulated and made available in written form by theSecretary for confirmation during meeting.

6 Administrative responsibilities


- ensure that required information on progress of work and matters relating to the TechnicalCommittee are communicated to appropriate bodies ;

- carry out correspondence concerning the activity of the Technical Committee via theTechnical Committee Secretariat.

The Chairman may- represent CEN, with the agreement of the Technical Board, at meetings of other

organisations to give technical advice on subjects within the scope of the Technical

Committee.

7 Policy guidance

(1) In order to enable an efficient conduct of work in a Technical Committee, the appointment

of a Technical Committee Chairman should not exceed six year. But it is recommended toinitially decide for a period of three years.



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Responsibilities of the Secretaryof a Technical Committee

or Sub - Committee

Drafted by CEN Central SecretariatDirectorate Standards Programme - Training Tools and Support Unit



28/77

Contents

1 Definition and objectives .............................................28

2 Applicable rules....................................................28

3 Associated process(es)..................................................28

4 Management of a Technical Committee...............................28

5 Organization of meetings..........................................................30

6 Administrative responsibilities.....................................................30

7 Annex(es).....................................................31



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the Technical Committee Business Plan and when the Technical Committee decides to create

a new work item;

- monitor the progress of the programme of work against the agreed timetable, chasing up ofdelayed work items when necessary;

- co-ordinate the activities of (subordinate subcommittees and/or) Working Groups;- arrange, in consultation with the Chairman, the meetings as frequently as

necessary, to meet target dates;

- be able to provide appropriate advice to ensure that standards are drafted in accordance withthe CEN/CENELEC Internal Regulations - Part 3 Rules for the drafting and presentation of

European Standards (PNE-Rules);

- participate in the work of the Comit De Lecture and be responsible together with the EditingCommittee of the presentation and equivalence of the three official languages (he convenesthe Editing Committee and ensures that at least one meeting takes place before sending the

draft European Standard to CEN Central Secretariat for the enquiry process);

- make known the relevant procedural provisions of the CEN/CENELEC, Internal Regulationsas necessary and ensure that the Technical Committee is aware of and implements therelevant Technical Board (BT) resolutions;

- prepare a compilation of the comments made during the CEN enquiry, and after study by theProject Leader, circulate them to the Technical Committee members (for more information,see ENQ/EN/TC - Reporting and handling of comments after CEN enquiry);

- study and report the result of formal vote and propose a procedure for follow-up action;- record the principal decision in the form of clear resolutions containing all necessary

elements for their implementation and assure they are taken in full respect of CEN policies

and rules;

- be responsible of full transparency on decisions taken, by communication of the resolutionswithin 2 weeks after the meeting of Technical Committee to CEN Central Secretariat;

- keep close contact with CEN Central Secretariat, for consultation on general matters, forcompliance of resolutions to CEN rules; and for liaison with outside bodies, e.g. the

European Commission;

- maintain a register of the constitution of the committee and of the membership and experts inall the bodies of Technical Committee;

- ensure the timely availability of committee drafts, and in particular, the availability of threeofficial language versions of the draft at the latest at the start of the CEN enquiry or whenmeeting difficulties in producing prEN's in the three official language versions, apply the



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resolution BT 172/1993 (for more information, consult DRAFT/EN-Translation procedure);

- ensure that the drafts for CEN enquiry and formal vote are "quality controlled" prior tosubmission to CEN Central Secretariat for circulation (PNE-Rules used and followed, draft

done in three languages, coherence of the language versions).

5 Organisation of meetings

(1) The Secretary shall

- send out calling notices, agendas and documents to members in accordance with the deadlinesfor circulation specified in the CEN/CENELEC Internal Regulations Part 2: Common rulesfor standards work;

- prepare compilation of comments on those documents when necessary;-

send out calling notices and agendas to other organisations' accorded formal liaison status;

- ensure that reports on the progress of work within Subcommittees and Working Groups areprovided;

- record the main decisions taken in the form of resolutions and distribute forconfirmation by delegates at the closure of the meeting;

- prepare and distribute minutes of the meeting to members, at the latest fourweeks after the meeting;

- carry out the decisions of the meetings without delay. NOTE For additional information and framework of documents, please consult"DEFI/TC/MTG".

6 Administrative responsibilities

(1) The Secretary shall

- provide reports at least once a year on progress of work programmes to CEN CentralSecretariat with explanation of any delays (by using the blanco annual report as given in

clause 7 - Annex);

- provide appropriate progress data for CEN Central Secretariat enabling update of the CENdatabase (through the Technical Committee Business Plan for major modifications);

- execute operational activities for management of mandates;- maintain the documentation on the work of the Technical Committee efficiently so that the

files can be handed over in good order if the Secretariat changes;



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- ensure the correct maintenance and circulation of the CEN System Handbook, within theTechnical Committee;

- request action from the CEN Central Secretariat for review of new ISO/IEC publications to

see if they are suitable as reference documents;

- ensure that published ENs or HDs are reviewed by the Technical Committee ultimately after5 years (through updating of the Technical Committee Business Plan);

- ensure updated information to CEN Central Secretariat on the composition and names ofWorking Groups and of their Convenors (through the updating of the Technical CommitteeBusiness Plan).

- distribute communication materials and exploitation assignment materials to TC Chairman,delegates and SC Secretaries;

NOTE for WGs coming directly under TCs, it is up to the TC Secretary to distributecommunication materials and exploitation assignment materials directly to WG Convenors.

- operate normal assignment procedure including:- formal implementation during TC/SC meeting;- collecting of attendance lists including the copyright exploitation assignments of TC/SC

delegates (originals only);

- transfer to NSO holding TC Secretariat for archiving of original TC, SC & WG attendancelists including the copyright exploitation assignment statements, TC Secretary only;

- to monitor implementation & operation in SCs and WGs;- to provide second level support to WG Convenors.- operate (as local CEN official) for copyright exploitation license agreements for significant

contributors not normally attending meetings of TC, SCs and WGs and co-ordinate with the

CEN/CS for licence agreements for use of existing copyright material;

- transfer original licence agreement for significant contributors to NSO for safeguarding.7 Annex(es)

(1) Annex A Blanco annual report for Technical Committee

"17 TC Annual Report.doc"



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EUROPEAN COMMISSIONDIRECTORATE-GENERALIll

1NDUSTRY

Legislation and standardization; telematics networks

ANNEX B

Standardization, including industrial aspects of electronic trading

Brussels, 31 March 1998

M1265en

Addendum n3

BC/CEN/10-0 EUROCODES: EXECUTION OR STANDARDISATION

WORKS CONCERNING THE STRUCTURAL AND GEOTECHNICAL DESIGN OFBUILDINGS AND CIVIL ENGINEERING WORKS: MANDATE FOR THE

CONVERSION OF THE EUROCODES FROM ENV INTO EN.

1 Introduction

(1) This mandate is intended to carry forward the works undertaken within the framework of the

EUROCODES, as stated in the framework-mandate BC/CEN/11-89 and in the initial specificmandate BC/CEN/I0-90, sent to CEN on 27 December 1991 and which received a positive

opinion from the 83/189 Committee at its meeting of 14 December 1989.

(2) Following point III.1 of the framework-mandate BC/CEN/11-89, EUROCODES drafts had

to be published as European pre-standards ENV for experimental period of application, the

duration of which was to be determined by agreement between the Commission and CEN, after

consultation with Member States. As this period, according to CEN internal rules, is foreseen to

be valid for a term of three years, the Commission and CEN therefore agreed at the end of 1995to consult Member States on the conversion of EUROCODES from ENV pre-standards into EN

standards. At the meeting of the Standing Committee on Construction on 22 November 1995,

Member States expressed their positive opinion with regard to this conversion.



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(3) Further, point III.1 of BC/CEN/10-90 states the following:

The standardization works consist of:

I.

the drafting of ENV Experimental Standards and their publication;

II. the drafting of EN European Standards, based upon the commentsreceived after a thorough examination and the experimental application

of the ENV standards in Member States; this step covers the works

carried out until the publication of the national standards transposing the

EN standards.

(4) The BC/CEN/10-90 mandate and its two amendments of 20 December 1992 and 20

December 1993 are related to the carrying out of works covered by part i) above, i.e. the drafting

and the publication of the ENV standards.

2 Object of the present mandate

(1) As foreseen in point 12 of the mandate BC/CEN/I0-90, the present conversion mandate,

which constitutes amendment n3 to the same specific mandate, covers part II) above, which

means;

(2) the revision of the ENV Experimental European Standards drafted within the framework of

the above mandate; this revision will consider theexperience acquired during the experimental

phase within Member States and the comments received;

(3) the revision of ENV Experimental European Standards to produce EN European Standards.

3 Conditions of the present mandate

(1) This addendum falls within the legal, administrative and financial conditions of the

framework-mandate signed on 15 September 1992.

(2) Representatives of the authorities responsible for national regulations have the right and

shall be able to participate in the activities of CEN through their national delegations and to

present their points of view at all stages of the drafting process of the European standards.

(3) The Commission may participate in standardization activities as observer and has the rightto receive allrelevant documents.

(4) CEN will immediately inform the Commission of any problem relating to the

implementation of the mandate and will present a six-monthly progress report on work within the

framework of the mandate.



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(5) The progress report will include a description of work carried out and information on any

difficulties being met, whether political or technical, with particular reference to those that might

lead the Authorities of a Member State to raise objections.

4 Programme

(1) CEN will be requested to produce a programme of work, to be prepared by fixing priority

groups, and a justified timetable for the conversions, within 3 months of the mandate being

issued. The work programme and the timetable will be subject to endorsement by the

Commission.

(2) CEN will draft the EN European Standards on the basis of the existing ENV Experimental

European Standards, considering and evaluating all the comments received from the respective

ENV enquiry.

(3) The Commission, after consultation with CEN, reserves the right to modify the present

mandate, should the need arise.

(4) CEN members will publish the standards transposing the European standards at the latest

one year after a positive vote in CEN.

5 Specific considerations

5.1 Boxed values

(1) In principle the boxed values in the ENV texts (which are variable according to national

regulations in the Member States) will be eliminated wherever possible. In exceptional and

justified cases where such values are to remain, they may be expressed as classes ofconvenience with a range of values specified inthe text.

5.2 Coexistence

(1) The European Prestandards, once transformed into European Standards, shall be transposed

into national standards. The existing national standards in the corresponding field, may coexist

with the Eurocode European Standards during a transition period to be determined by the

Commission in consultation with the member States and CEN.

6 Annexes

6.1 This mandate includes 2 annexes:6.1.1 annex I: proposed Priority groups, with titles;6.1.2 annex II: proposed dates for issue of Order Vouchers for the

Priority Groups A, B and C (pages 1 and 2).



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EUROPEAN COMMISSIONDirectorate General 111IndustryRegulatory policy and standardization; telematic networksStandardization including industrial aspects of electronic trade

BC/CEN/03/000/97-38

ORDER VOUCHER SENT TO CEN

Relating to the conversion of ENV EUROCODES

into ENs

_________

A. Standardization order1- Motivation

1.1 This standardization order, governed by the financial, legal and administrativeconditions of the framework contract of 15 September 1992 and its amendmentNo. 1 of 27 July 1994 is included in the framework of the council ConstructionProducts Directive 89/106/EEC

1, amended by the Council Directives 93/68/EC

2

and 93/465/EC3, the interpretative documents of Council Directive 89/106/EEC

4

and the various legislative acts adopted within the framework of this Directive.1.2 It is also included, on the one hand, in the framework of the framework mandate

BC/CEN/11-89 and its amendment No. 1 relating to the execution of a

standardization programme for the design of building and civil engineeringstructures and, on the other, in the framework of the specific contractBC/CEN/10-90 and its amendments 1,2 and draft amendment No.3.

1.3 Its object is the application of article III.I (ii) of the specific mandate BC/CEN/10-89 and its amendment No. 1 which stipulates the preparation of EuropeanStandards (ENs) based on comments received after thorough examination andexperimental application of the ENVs in the Member States : these cover the preliminary work up to publication of the national standards transposing theENs.

1OJEC No. L40 OF 11 February 1989

2OJEC No. L220 OF 30 August 1993

3OJEC No. L220 OF 30 August 1993

4OJEC No. C62 OF 28 February 1994



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1.4 In view of the importance of the Eurocodes in the implementation of Directive 89/106/EC,CEN and the Commission agree that the totality of the standardization programme includedin the specific mandate BC/CEN/l0-90 and its amendments I and 2 shall be converted fromexperimental ENVs into ENs. This programme currently financed by the Commission up tothe ENV stage comprises 45 standards, a list of which is given in annex I.

1.5 In order to implement this conversion, CEN and the Commission agree to limit the financialsupport from the Commission to an overall sum of three million ecus (3 m ecus). This sum isspread over a period of 4 years in four phases of approximately 750,000 ecus each withoutexceeding the overall sum of 3 m ecus and within the limits of the budget available. Theprogramme in each phase will be determined as a function of the progress of the work andpriorities which will be fixed. Any combining or splitting up of the said standards will notchange the amount of financing per phase.

1.6 In order to ensure full latitude as to the rapidity of the progress of work and the programmesto be determined according to priorities, CEN and the Commission agree to fix the financialsupport from the Commission for each phase concerned.

II Execution of the order voucher

1. CEN and the Commission note that discussions are in hand regarding the implementation ofarticle III.1 (ii) of the specific mandate BC/CEN/l0-90 and that the mandate on this subjectwill be sent to CEN as soon as it is approved by Committee 83/189. In execution of thisorder voucher, CEN will take into account the specific technical conversion provisions,which will be included in this mandate.

2. CEN will submit a quarterly report on the progress of the work for each phase concernedand will inform the Commission of any difficulty met during the work, which could lead theauthorities of any Member State to submit objections.

3. The standards should be converted according to a timetable to by established in a jointagreement between CEN and the Commission for each phase concerned.

4. Account should be taken of the technical provisions for converting ENVs into ENs specifiedin draft amendment No. 3 to BC/CEN/89- 11.

III Financing and method of payment

1. The Commission shall pay, against completion of the tasks set out in annexes IIProgrammed, the total sum of 741,411.77 Ecus, calculated in accordance with article 6 ofthe framework contract. This sum represents 95 % of the total cost of the order (the balancebeing charged to the EFTA countries) for phase No. 1 for completion of the work by theSecretariats of the Technical Committees engaged in carrying out the order (column 22,

Totals line, annex III).

2. Payment under the terms of the order will be made in accordance with the followingprovisions and given in annex III called Payment plan:

3.5 after approval of the order by CEN : for each standard, the sum appearing in column 6,step 0, i.e. 15 % of the cost of the corresponding standard; however, application ofarticle 2.1 is conditional on a timetable for the execution of phase No. 1 beingpresented;



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2.2 after presentation of the first document as defined in article 1 of annex IIof the framework contract : for each standard, the figure appearing incolumn 7, step 1, i.e. 15 % of the corresponding standard;

2.3 after notification that the ENs have been ratified and adopted: for eachstandard adopted, the amount appearing in column 9, step 3, i.e. 30 % of

the cost of the corresponding standard;

2.4 after notification that the ENs have be given the status of a nationalstandard and that the divergent national standards in the Member States ofthe EEC have been withdrawn: for each transposed standard, the figureappearing in column 10, step 4, i.e. 15 % of the cost of the correspondingstandard

2.5 The invoices for the payments referred to in 2.2 to 2.4 will be presentedquarterly on a summary basis. These lists will include at the same time, asappropriate, the initial documents, the prENs presented, the adopted ENsand the transposed ENs.

2.6 All payments connected with the execution of the work indicated abovewill be made within 60 days following receipt of the correspondinginvoice.

C Annexes

This order contains 4 annexes:

- annex 1 list of the 45 ENVs (BC/CEN/l0-90 and its amendments)- annex 2 timetable relating to phase I

- annex 3 financial tables (summaries of estimates)

- annex 4 payment plan

Done, in Brussels, on 22 December 1997

For the Contractor For the Commission

G. HONGLEUR E. VARDAKAS

Secretary-General DirectorAuthorized representative of

S. Micossi



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ANNEX C

Structural Eurocodes

Schedule of titles and brief scopes for proposed European Standards (EN)(updated in italics, July 2003)

(*Indicates CORE documents)

EUROCODE 0

*EN 1990 Basis of design for structural Eurocodes

SCOPE: The basis and general principles for the structural design and

verification of buildings and civil engineering works including geotechnical

aspects, the principles and requirements for safety and serviceability ofstructures and guidelines for related aspects of structural reliability in all

circumstances in which a structure is required to give adequate performance,

including fire and seismic events.

BASE DOCUMENT: ENV 1991-1

EUROCODE 1

*EN 1991-1-1 Eurocode 1: Actions on structures -

Part 1-1: General actions -

Densities, self-weight and imposed loads

SCOPE: Assessment of actions to be used in the structural design of

buildings and civil engineering works due to the density of constructionmaterials and stored materials, the self-weight of construction elements and

imposed loads on floors and roofs of buildings.

BASE DOCUMENT: ENV 1991-2-1


Part 1-2: General actions -Actions on structures exposed to fire

SCOPE: Assessment of actions to be used in the structural design of buildings and civil engineering works where they are required to give



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adequate performance in fire exposure.


*EN 1991-1-3 Eurocode 1: Actions on structures -Part 1-3: General actions -

Snow loads

SCOPE: Assessment of loads imposed by snow to be used in the structural

design of buildings and civil engineering works on sites at altitudes below

1500 m.



(title changed) Part 1-4: General actions -Wind actions

SCOPE: Assessment of wind loads to be used in the structural design of

building up to a height of 200 m, chimneys and other cantilevered structures,

road and railway bridges up to a span of 200 m and cycle/foot bridges up to aspan of 30 m.



Part 1-5: General actions -Thermal actions

SCOPE: Assessment of thermal actions to be used in the structural design of

buildings and civil engineering works due to exposure to daily or seasonalclimatic changes and variations due to a function of their use.



Part 1-6: General actions -Actions during execution

SCOPE: Assessment of actions, combinations of actions and environmental

influences applied during the execution stage, including those applied toauxiliary construction works, to be used in the structural design of buildings

and civil engineering works.




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*EN 1991-1-7 Eurocode 1: Actions on structures -(title changed) Part 1-7: General actions -

Accidental actions

SCOPE: Assessment of actions arising from accidental human activityincluding impact and collisions from wheeled vehicles, ships, derailed trains

and helicopters on roofs and gas explosions in buildings - their analysis and

determination of design values to be used in the structural design of buildings and civil engineering works. Procedures for risk analysis and

technical measures to reduce consequences.


EN 1991-2 Eurocode 1: Actions on structures -Part 2: Traffic loads on bridges

SCOPE: Assessment of imposed loads associated with road traffic,

pedestrian actions and rail traffic including dynamic effects, centrifugal, braking, acceleration and accidental forces, to be used for the structural

design of road, railway and pedestrian/cycle bridges. Guidance on

combinations with non-traffic loads and other actions on road and railwaybridges, and loads on parapets.


EN 1991-3 Eurocode 1: Actions on structures -Part 3: Actions induced by cranes and machinery

SCOPE: Specifies actions, self-weights and imposed loads (models andrepresentative values) associated with hoists, crabs and cranes on runway

beams, static and dynamic actions induced in supporting structures by

machinery and permanent, variable and accidental actions induced by

transport vehicles (forklifts, wheeled, tracked and rail transportationvehicles, devices for maintenance and helicopters).


EN 1991-4 Eurocode 1: Actions on structures -(title changed) Part 4: Silos and tanks

SCOPE: General principles and actions for the structural design of tanks and

silos.


EUROCODE 2



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*EN 1992-1-1 Eurocode 2: Design of concrete structures -

Part 1-1: General -Common rules for building and civil engineering structures.

SCOPE: General rules for the structural design of buildings and civil

engineering works in reinforced and prestressed concrete made with normaland lightweight aggregates, plain or lightly reinforced concrete and precast

concrete and the design of reinforced concrete components with unbonded

tendons.

BASE DOCUMENTS: ENV 1992-1-1, ENV 1992-1-3,

ENV 1992-1-4, ENV 1992-1-5 and ENV 1992-1-6

*EN 1992-1-2 Eurocode 2: Design of concrete structures -Part 1-2: General -

Structural fire design

SCOPE: Supplementary to Part 1-1. Additional and varied rules to be usedfor the design of concrete structures which are required to avoid premature

structural collapse and to limit the spread of fire in the accidental situation of

exposure to fire.


EN 1992-2 Eurocode 2: Design of concrete structures -Part 2: Bridges

SCOPE: Complementary to Part 1. Varied general rules and additionaldetailed rules for the structural design of road, rail and footbridges using

reinforced and/or prestressed concrete.


EN 1992-3 Eurocode 2: Design of concrete structures -

Part 3: Liquid retaining and containment structures

SCOPE: Complementary to Part 1. Detailed rules for the structural design

of the elements of containment structures which directly support storedliquids and granular materials and constructed from reinforced, prestressed,

plain and/or lightly reinforced concrete.


EUROCODE 3

*EN 1993-1-1: Eurocode 3: Design of steel structures -



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(includes original Part 1-1: General -EN 1993-3) General rules and rules for buildings

SCOPE: General rules for the structural design of buildings and civil

engineering works in steel.

BASE DOCUMENTS: ENV 1993-1-1, ENV 1993-1-1/A1, and

ENV 1993-1-1/A2

*EN 1993-1-2 Eurocode 3: Design of steel structures -

Part 1-2 General -

Structural fire design

SCOPE: Supplementary to Part 1-1. Additional and varied rules to be used

for the design of steel structures which are required to avoid prematurestructural collapse and to limit the spread of fire in the accidental situation of

exposure to fire.

BASE DOCUMENT : ENV 1993-1-2


Part 1-3: General -Cold formed thin gauge members and sheeting

SCOPE: Supplementary to Part 1-1. Supplementary provisions for thestructural design by calculation and design assisted by testing of steel

building structures comprising cold formed steel members and profiledsheets, made from coated or uncoated thin gauge hot or cold rolled sheet or

strip.



Part 1-4: General -Structures in stainless steel

SCOPE: Supplementary to Part 1-1. Supplementary provisions for thestructural design of structures in austenitic and austenitic-ferritic stainless

steels.


*EN 1993-1-5 Eurocode 3: Design of steel structures:Part 1-5: General -

Strength and stability of planar plated structures without transverse loading.

SCOPE: Complementary to Parts 1-1, 2, 4-1, 4-2 and 6. Supplementary



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provisions for the structural design of planar plated structures, with or

without stiffeners, that are subject to loads acting in the plane of the plate.

BASE DOCUMENTS: ENV 1993-1-5

*EN 1993-1-6 Eurocode 3: Design of steel structures -Part 1-6: General -

Strength and stability of shell structures

SCOPE: Supplementary to Part 1-1. Supplementary provisions for the

structural design of plated steel shells in the form of cylinders, cones andspherical caps.


*EN 1993-1-7 Eurocode 3 : Design of steel structures(title changed) Part 1-7 : General -

Design values for plated structures subjected to out of plane loading



Part 1-8: General -

Design of joints

SCOPE: Supplementary to Part 1-1. Supplementary pro

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