Eurocode - Basis of structural design

(1) EN 1990 establishes Principles and requirements for the safety, serviceability and durability of structures, describes the basis for their design and verification and gives guidelines for related aspects of structural reliability.
(2) EN 1990 is intended to be used in conjunction with EN 1991 to EN 1999 for the structural design of buildings and civil engineering works, including geotechnical as-pects, structural fire design, situations involving earthquakes, execution and temporary structures.
NOTE For the design of special construction works (e.g. nuclear installations, dams, etc.), other provi-sions than those in EN 1990 to EN 1999 might be necessary.
(3) EN 1990 is applicable for the design of structures where other materials or other actions outside the scope of EN 1991 to EN 1999 are involved.
(4) EN 1990 is applicable for the structural appraisal of existing construction, in devel-oping the design of repairs and alterations or in assessing changes of use.
NOTE Additional or amended provisions might be necessary where appropriate.

Eurocode: Grundlagen der Tragwerksplanung

Eurocodes structuraux - Eurocodes: Bases de calcul des structures

(1) L'EN 1990 définit des Principes et des exigences en matière de sécurité, d'aptitude au service et de durabilité des structures, décrit les bases pour le dimensionnement et la vérification de celles-ci, et fournit des lignes directrices concernant les aspects de la fiabilité structurale qui s'y rattachent.
(2) L'EN 1990 est destinée à être utilisée conjointement avec les EN 1991 à EN 1999 pour la conception structurale des bâtiments et ouvrages de génie civil, y compris les aspects géotechniques, la résistance à l'incendie, les situations sismiques, l'exécution et les structures provisoires.
NOTE   Pour le calcul d'ouvrages spéciaux (par exemple installations nucléaires, barrages, etc.), d'autres dispositions que celles des EN 1990 à EN 1999 peuvent être nécessaires.
(3) L'EN 1990 est applicable pour le calcul de structures non traitées par les EN 1991 à EN 1999, dans lesquelles interviennent des matériaux ou des actions non couverts par celles-ci.
(4) L'EN 1990 est applicable pour l'évaluation structurale de constructions existantes, en vue de projeter des réparations et des modifications ou d'étudier des changements d'utilisation.
NOTE   Des dispositions additionnelles ou modifiées pourront se révéler nécessaires selon le cas.

Eurocode – Osnove projektiranja

EN 1990 vzpostavlja načela in zahteve za varnost, uporabnost in vzdržljivost konstrukcij, opisuje osnove za njihovo načrtovanje in potrditev ter podaja vodila za s tem povezane vidike strukturne zanesljivosti. EN 1990 je namenjen za uporabo skupaj z od EN 1991 do EN 1999, za projektiranje zgradb in civilnih inženirskih del, vključno z geotehničinimi vidiki, strukturnim načrtom v primeru ognja, situacijami, ki vključujejo potrese, izvedbo in začasne konstrukcije. OPOMBA: Za načrtovanje posebnih konstrukcijskih del (npr. jedrske postavitve, jezovi itd.), so lahko potrebne druge določbe, kot so tiste v od EN 1990 do EN 1999. EN 1990 velja za projektiranje, kjer so vključeni drugi materiali ali druga dejanja, ki so zunaj obsega od EN 1991 do EN 1999. EN 1990 velja za strukturno presojo obstoječih konstrukcij, pri razvoju načrta popravil in sprememb ali pri ocenitvi sprememb uporabe.

General Information

Status
Published
Publication Date
23-Apr-2002
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
24-Apr-2002
Completion Date
24-Apr-2002

RELATIONS

Buy Standard

Standard
EN 1990:2004
English language
87 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day
Standard – translation
EN 1990:2004
Slovenian language
74 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Eurocode - Basis of structural designEurocode – Osnove projektiranjaEurocodes structuraux - Eurocodes: Bases de calcul des structuresEurocode: Grundlagen der TragwerksplanungTa slovenski standard je istoveten z:EN 1990:2002SIST EN 1990:2004en91.010.30Technical aspectsICS:SIST ENV 1991-1:19981DGRPHãþDSLOVENSKI

STANDARDSIST EN 1990:200401-september-2004

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1990April 2002ICS 91.010.30Supersedes ENV 1991-1:1994English versionEurocode - Basis of structural designEurocodes structuraux - Eurocodes: Bases de calcul desstructuresEurocode: Grundlagen der TragwerksplanungThis European Standard was approved by CEN on 29 November 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1990:2002 E

EN 1990:2002 (E)2ContentsPageFOREWORD..............................................................................................................................................5BACKGROUND OF THE EUROCODE PROGRAMME.......................................................................................5STATUS AND FIELD OF APPLICATION OF EUROCODES.................................................................................6NATIONAL STANDARDS IMPLEMENTING EUROCODES................................................................................7LINKS BETWEEN EUROCODES AND HARMONISED TECHNICAL SPECIFICATIONS (ENS AND ETAS) FORPRODUCTS.................................................................................................................................................7ADDITIONAL INFORMATION SPECIFIC TO EN 1990.....................................................................................7NATIONAL ANNEX FOR EN 1990...............................................................................................................8SECTION 1

GENERAL........................................................................................................................91.1 SCOPE.................................................................................................................................................91.2 NORMATIVE REFERENCES...................................................................................................................91.3 ASSUMPTIONS...................................................................................................................................101.4 DISTINCTION BETWEEN PRINCIPLES AND APPLICATION RULES..........................................................101.5 TERMS AND DEFINITIONS...................................................................................................................111.5.1 Common terms used in EN 1990 to EN 1999............................................................................111.5.2 Special terms relating to design in general...............................................................................121.5.3 Terms relating to actions...........................................................................................................151.5.4 Terms relating to material and product properties...................................................................181.5.5 Terms relating to geometrical data...........................................................................................181.5.6 Terms relating to structural analysis........................................................................................191.6 SYMBOLS..........................................................................................................................................20SECTION 2

REQUIREMENTS.........................................................................................................232.1 BASIC REQUIREMENTS......................................................................................................................232.2 RELIABILITY MANAGEMENT..............................................................................................................242.3 DESIGN WORKING LIFE......................................................................................................................252.4 DURABILITY......................................................................................................................................252.5 QUALITY MANAGEMENT....................................................................................................................26SECTION 3

PRINCIPLES OF LIMIT STATES DESIGN..............................................................273.1 GENERAL..........................................................................................................................................273.2 DESIGN SITUATIONS..........................................................................................................................273.3 ULTIMATE LIMIT STATES...................................................................................................................283.4 SERVICEABILITY LIMIT STATES..........................................................................................................283.5 LIMIT STATE DESIGN..........................................................................................................................29SECTION 4

BASIC VARIABLES......................................................................................................304.1 ACTIONS AND ENVIRONMENTAL INFLUENCES....................................................................................304.1.1 Classification of actions............................................................................................................304.1.2 Characteristic values of actions................................................................................................304.1.3 Other representative values of variable actions........................................................................324.1.4 Representation of fatigue actions..............................................................................................324.1.5 Representation of dynamic actions...........................................................................................324.1.6 Geotechnical actions.................................................................................................................334.1.7 Environmental influences..........................................................................................................334.2 MATERIAL AND PRODUCT PROPERTIES..............................................................................................334.3 GEOMETRICAL DATA.........................................................................................................................34SECTION 5

STRUCTURAL ANALYSIS AND DESIGN ASSISTED BY TESTING...................355.1 STRUCTURAL ANALYSIS....................................................................................................................355.1.1 Structural modelling..................................................................................................................355.1.2 Static actions.............................................................................................................................355.1.3 Dynamic actions........................................................................................................................35

EN 1990:2002 (E)35.1.4 Fire design................................................................................................................................365.2 DESIGN ASSISTED BY TESTING...........................................................................................................37SECTION 6

VERIFICATION BY THE PARTIAL FACTOR METHOD.....................................386.1 GENERAL..........................................................................................................................................386.2 LIMITATIONS.....................................................................................................................................386.3 DESIGN VALUES................................................................................................................................386.3.1 Design values of actions............................................................................................................386.3.2 Design values of the effects of actions.......................................................................................396.3.3 Design values of material or product properties......................................................................406.3.4 Design values of geometrical data............................................................................................406.3.5 Design resistance......................................................................................................................416.4 ULTIMATE LIMIT STATES...................................................................................................................426.4.1 General......................................................................................................................................426.4.2 Verifications of static equilibrium and resistance.....................................................................436.4.3 Combination of actions (fatigue verifications excluded)...........................................................436.4.3.1 General................................................................................................................................................436.4.3.2 Combinations of actions for persistent or transient design situations (fundamental combinations)....446.4.3.3 Combinations of actions for accidental design situations....................................................................456.4.3.4 Combinations of actions for seismic design situations........................................................................456.4.4 Partial factors for actions and combinations of actions...........................................................456.4.5 Partial factors for materials and products................................................................................466.5 SERVICEABILITY LIMIT STATES..........................................................................................................466.5.1 Verifications..............................................................................................................................466.5.2 Serviceability criteria................................................................................................................466.5.3 Combination of actions.............................................................................................................466.5.4 Partial factors for materials......................................................................................................47ANNEX A1 (NORMATIVE) APPLICATION FOR BUILDINGS.......................................................48A1.1 FIELD OF APPLICATION...................................................................................................................48A1.2 COMBINATIONS OF ACTIONS...........................................................................................................48A1.2.1 General...................................................................................................................................48A1.2.2 Values of

factors.................................................................................................................48A1.3 ULTIMATE LIMIT STATES.................................................................................................................49A1.3.1 Design values of actions in persistent and transient design situations...................................49A1.3.2 Design values of actions in the accidental and seismic design situations..............................53A1.4 SERVICEABILITY LIMIT STATES.......................................................................................................54A1.4.1 Partial factors for actions.......................................................................................................54A1.4.2 Serviceability criteria.............................................................................................................54A1.4.3 Deformations and horizontal displacements..........................................................................54A1.4.4 Vibrations...............................................................................................................................56ANNEX B

(INFORMATIVE) MANAGEMENT OF STRUCTURAL RELIABILITY FORCONSTRUCTION WORKS...................................................................................................................57B1 SCOPE AND FIELD OF APPLICATION....................................................................................................57B2 SYMBOLS..........................................................................................................................................57B3 RELIABILITY DIFFERENTIATION..........................................................................................................58B3.1 Consequences classes................................................................................................................58B3.2 Differentiation by

values........................................................................................................58B3.3 Differentiation by measures relating to the partial factors.......................................................59B4 DESIGN SUPERVISION DIFFERENTIATION............................................................................................59B5 INSPECTION DURING EXECUTION.......................................................................................................60B6 PARTIAL FACTORS FOR RESISTANCE PROPERTIES...............................................................................61ANNEX C

(INFORMATIVE) BASIS FOR PARTIAL FACTOR DESIGN AND RELIABILITYANALYSIS................................................................................................................................................62C1 SCOPE AND FIELD OF APPLICATIONS..................................................................................................62C2 SYMBOLS...........................................................................................................................................62C3 INTRODUCTION..................................................................................................................................63

EN 1990:2002 (E)4C4 OVERVIEW OF RELIABILITY METHODS................................................................................................63C5 RELIABILITY INDEX .........................................................................................................................64C6 TARGET VALUES OF RELIABILITY INDEX .........................................................................................65C7 APPROACH FOR CALIBRATION OF DESIGN VALUES.............................................................................66C8 RELIABILITY VERIFICATION FORMATS IN EUROCODES.......................................................................68C9 PARTIAL FACTORS IN EN 1990..........................................................................................................69C10 0 FACTORS.....................................................................................................................................70ANNEX D (INFORMATIVE) DESIGN ASSISTED BY TESTING.....................................................72D1 SCOPE AND FIELD OF APPLICATION....................................................................................................72D2 SYMBOLS..........................................................................................................................................72D3 TYPES OF TESTS.................................................................................................................................73D4 PLANNING OF TESTS..........................................................................................................................74D5 DERIVATION OF DESIGN VALUES........................................................................................................76D6 GENERAL PRINCIPLES FOR STATISTICAL EVALUATIONS......................................................................77D7 STATISTICAL DETERMINATION OF A SINGLE PROPERTY......................................................................77D7.1 General......................................................................................................................................77D7.2 Assessment via the characteristic value....................................................................................78D7.3 Direct assessment of the design value for ULS verifications.....................................................79D8 STATISTICAL DETERMINATION OF RESISTANCE MODELS....................................................................80D8.1 General......................................................................................................................................80D8.2 Standard evaluation procedure (Method (a))............................................................................80D8.2.1 General................................................................................................................................................80D8.2.2 Standard procedure..............................................................................................................................81D8.3 Standard evaluation procedure (Method (b))............................................................................85D8.4 Use of additional prior knowledge............................................................................................85BIBLIOGRAPHY....................................................................................................................................87

EN 1990:2002 (E)5ForewordThis document (EN 1990:2002) has been prepared by Technical Committee CEN/TC250 "Structural Eurocodes", the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either bypublication of an identical text or by endorsement, at the latest by October 2002, andconflicting national standards shall be withdrawn at the latest by March 2010.This document supersedes ENV 1991-1:1994.CEN/TC 250 is responsible for all Structural Eurocodes.According to the CEN/CENELEC Internal Regulations, the national standardsorganizations of the following countries are bound to implement this EuropeanStandard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany,Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.Background of the Eurocode programmeIn 1975, the Commission of the European Community decided on an action programmein the field of construction, based on article 95 of the Treaty. The objective of theprogramme was the elimination of technical obstacles to trade and the harmonisation oftechnical specifications.Within this action programme, the Commission took the initiative to establish a set ofharmonised technical rules for the design of construction works which, in a first stage,would serve as an alternative to the national rules in force in the Member States and,ultimately, would replace them.For fifteen years, the Commission, with the help of a Steering Committee with Repre-sentatives of Member States, conducted the development of the Eurocodes programme,which led to the first generation of European codes in the 1980’s.In 1989, the Commission and the Member States of the EU and EFTA decided, on thebasis of an agreement1 between the Commission and CEN, to transfer the preparationand the publication of the Eurocodes to CEN through a series of Mandates, in order toprovide them with a future status of European Standard (EN). This links de facto theEurocodes with the provisions of all the Council’s Directives and/or Commission’s De-cisions dealing with European standards (e.g. the Council Directive 89/106/EEC onconstruction products - CPD - and Council Directives 93/37/EEC, 92/50/EEC and89/440/EEC on public works and services and equivalent EFTA Directives initiated inpursuit of setting up the internal market).

1 Agreement between the Commission of the European Communities and the European Committee for Standardisation (CEN)concerning the work on EUROCODES for the design of building and civil engineering works (BC/CEN/03/89).

EN 1990:2002 (E)6The Structural Eurocode programme comprises the following standards generally con-sisting of a number of Parts:EN 1990Eurocode :Basis of Structural DesignEN 1991Eurocode 1:Actions on structuresEN 1992Eurocode 2:Design of concrete structuresEN 1993Eurocode 3:Design of steel structuresEN 1994Eurocode 4:Design of composite steel and concrete structuresEN 1995Eurocode 5:Design of timber structuresEN 1996Eurocode 6:Design of masonry structuresEN 1997Eurocode 7:Geotechnical designEN 1998Eurocode 8:Design of structures for earthquake resistanceEN 1999Eurocode 9:Design of aluminium structuresEurocode standards recognise the responsibility of regulatory authorities in each Mem-ber State and have safeguarded their right to determine values related to regulatorysafety matters at national level where these continue to vary from State to State.Status and field of application of EurocodesThe Member States of the EU and EFTA recognise that Eurocodes serve as referencedocuments for the following purposes :– as a means to prove compliance of building and civil engineering works with the es-sential requirements of Council Directive 89/106/EEC, particularly Essential Re-quirement N°1 – Mechanical resistance and stability – and Essential RequirementN°2 – Safety in case of fire ;– as a basis for specifying contracts for construction works and related engineeringservices ;– as a framework for drawing up harmonised technical specifications for constructionproducts (ENs and ETAs)The Eurocodes, as far as they concern the construction works themselves, have a directrelationship with the Interpretative Documents2 referred to in Article 12 of the CPD,although they are of a different nature from harmonised product standards3. Therefore,technical aspects arising from the Eurocodes work need to be adequately considered byCEN Technical Committees and/or EOTA Working Groups working on product stan-dards with a view to achieving a full compatibility of these technical specifications withthe Eurocodes.

2 According to Art. 3.3 of the CPD, the essential requirements (ERs) shall be given concrete form in interpretative documents forthe creation of the necessary links between the essential requirements and the mandates for harmonised ENs and ETAGs/ETAs.3 According to Art. 12 of the CPD the interpretative documents shall :a) give concrete form to the essential requirements by harmonising the terminology and the technical bases and indicatingclasses or levels for each requirement where necessary ;b) indicate methods of correlating these classes or levels of requirement with the technical specifications, e.g. methods of calcu-lation and of proof, technical rules for project design, etc. ;c) serve as a reference for the establishment of harmonised standards and guidelines for European technical approvals.The Eurocodes, de facto, play a similar role in the field of the ER 1 and a part of ER 2.

EN 1990:2002 (E)7The Eurocode standards provide common structural design rules for everyday use forthe design of whole structures and component products of both a traditional and an in-novative nature. Unusual forms of construction or design conditions are not specificallycovered and additional expert consideration will be required by the designer in suchcases.National Standards implementing EurocodesThe National Standards implementing Eurocodes will comprise the full text of theEurocode (including any annexes), as published by CEN, which may be preceded by aNational title page and National foreword, and may be followed by a National annex.The National annex may only contain information on those parameters which are leftopen in the Eurocode for national choice, known as Nationally Determined Parameters,to be used for the design of buildings and civil engineering works to be constructed inthe country concerned, i.e. :– values and/or classes where alternatives are given in the Eurocode,– values to be used where a symbol only is given in the Eurocode,–

country specific data (geographical, climatic, etc.), e.g. snow map,– the procedure to be used where alternative procedures are given in the Eurocode, .It may also contain– decisions on the application of informative annexes,– references to non-contradictory complementary information to assist the user to applythe Eurocode.Links between Eurocodes and harmonised technical specifications(ENs and ETAs) for productsThere is a need for consistency between the harmonised technical specifications for con-struction products and the technical rules for works4. Furthermore, all the informationaccompanying the CE Marking of the construction products which refer to Eurocodesshall clearly mention which Nationally Determined Parameters have been taken intoaccount.Additional information specific to EN 1990EN 1990 describes the Principles and requirements for safety, serviceability and dura-bility of structures. It is based on the limit state concept used in conjunction with a par-tial factor method.For the design of new structures, EN 1990 is intended to be used, for direct application,together with Eurocodes EN 1991 to 1999.EN 1990 also gives guidelines for the aspects of structural reliability relating to safety,serviceability and durability :

4 see Art.3.3 and Art.12 of the CPD, as well as
4.2, 4.3.1, 4.3.2 and 5.2 of ID 1.

EN 1990:2002 (E)8– for design cases not covered by EN 1991 to EN 1999 (other actions, structures nottreated, other materials) ;– to serve as a reference document for other CEN TCs concerning structural matters.

EN 1990 is intended for use by :– committees drafting standards for structural design and related product, testing andexecution standards ;– clients (e.g. for the formulation of their specific requirements on reliability levels anddurability) ;– designers and constructors ;– relevant authorities.EN 1990 may be used, when relevant, as a guidance document for the design of struc-tures outside the scope of the Eurocodes EN 1991 to EN 1999, for : assessing other actions and their combinations ; modelling material and structural behaviour ; assessing numerical values of the reliability format.Numerical values for partial factors and other reliability parameters are recommended asbasic values that provide an acceptable level of reliability. They have been selected as-suming that an appropriate level of workmanship and of quality management applies.When EN 1990 is used as a base document by other CEN/TCs the same values need tobe taken.National annex for EN 1990This standard gives alternative procedures, values and recommendations for classes withnotes indicating where national choices may have to be made. Therefore the NationalStandard implementing EN 1990 should have a National annex containing all NationallyDetermined Parameters to be used for the design of buildings and civil engineeringworks to be constructed in the relevant country.National choice is allowed in EN 1990 through :– A1.1(1)– A1.2.1(1)– A1.2.2 (Table A1.1)– A1.3.1(1) (Tables A1.2(A) to (C))– A1.3.1(5)– A1.3.2 (Table A1.3)– A1.4.2(2)

EN 1990:2002 (E)9Section 1

General1.1 Scope(1) EN 1990 establishes Principles and requirements for the safety, serviceability anddurability of structures, describes the basis for their design and verification and givesguidelines for related aspects of structural reliability.(2) EN 1990 is intended to be used in conjunction with EN 1991 to EN 1999 for thestructural design of buildings and civil engineering works, including geotechnical as-pects, structural fire design, situations involving earthquakes, execution and temporarystructures.

NOTE For the design of special construction works (e.g. nuclear installations, dams, etc.), other provi-sions than those in EN 1990 to EN 1999 might be necessary.

(3) EN 1990 is applicable for the design of structures where other materials or otheractions outside the scope of EN 1991 to EN 1999 are involve

...

SLOVENSKI SIST EN 1990
STANDARD
september 2004
Evrokod – Osnove projektiranja konstrukcij (istoveten EN 1990:2000)
Eurocode – Basis of structural design
Eurocodes structuraux – Eurocodes – Bases de calcul des structures
Eurocode – Grundlagen der Tragwerksplanung
Referenčna oznaka
ICS 91.010.30; 91.040.01 SIST EN 1990:2004
Nadaljevanje na straneh od II do III in od 1 do 71

© 2004-12. Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 1990 : 2004
NACIONALNI UVOD

Standard SIST EN 1990 (sl), Evrokod – Osnove projektiranja, 2004, ima status slovenskega standarda

in je istoveten evropskemu standardu EN 1990 (en), Eurocode – Basis of structural design, 2004-09.

NACIONALNI PREDGOVOR

Evropski standard EN 1990:2002 je pripravil tehnični odbor Evropskega komiteja za standardizacijo

CEN/TC 250 Konstrukcijski evrokodi, katerega tajništvo je v pristojnosti BSI.

Slovenski standard SIST EN 1990:2004 je prevod evropskega standarda EN 1990:2002. V primeru

spora glede besedila slovenskega prevoda v tem standardu je odločilen izvirni evropski standard v

angleškem jeziku. Slovensko izdajo standarda je pripravil tehnični odbor SIST/TC KON Konstrukcije.

V skladu s standardom EN 1990 bo pripravljen nacionalni dodatek k standardu SIST EN 1990.

Nacionalni dodatek bo vseboval alternativne postopke, vrednosti in priporočila za razrede z opombami,

ki kažejo, kje evropski standard predvideva, da se lahko uveljavi nacionalna izbira. Zato nacionalni

dodatek z oznako SIST EN 1990:2004/A101 vsebuje nacionalno določene parametre, ki jih je treba

uporabiti pri projektiranju stavb in gradbenih inženirskih objektov, ki bodo zgrajeni v Republiki Sloveniji.

Nacionalna izbira je v EN 1990 dovoljena v:
− A.1.1(1)
− A.1.2.1(1)
− A.1.2.2 (preglednica A.1.1)
− A.1.3.1(1) (preglednice A.1.2(A) do (C))
− A.1.3.1(5)
− A.1.3.2 (preglednica A.1.3)
− A.1.4.2(2)
ZVEZA S STANDARDI

V standardu SIST EN 1990 pomeni sklicevanje na evropske in mednarodne standarde, ki je vključeno

v ta evropski standard, sklicevanje na enakovredne slovenske standarde, npr.:
EN 1991-1-1 pomeni SIST EN 1991-1-1.
PREDHODNA IZDAJA

SIST ENV 1991-1:1998 Eurocode 1: Osnove projektiranja in vplivi na konstrukcije - 1. del: Osnove

projektiranja
OPOMBE
− Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v
SIST EN 1990:2004 to pomeni “slovenski standard”.
− Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.
− Ta nacionalni dokument je istoveten EN 1990:2002 in je objavljen z dovoljenjem
CEN
Rue de Stassart 36
1050 Bruselj
Belgija
---------------------- Page: 2 ----------------------
SIST EN 1990 : 2004

This national document is identical with EN 1990:2002 and is published with the permission of

CEN
Rue de Stassart, 36
1050 Bruxelles
Belgium
III
---------------------- Page: 3 ----------------------
SIST EN 1990 : 2004
(Prazna stran)
---------------------- Page: 4 ----------------------
EVROPSKI STANDARD EN 1990
EUROPEAN STANDARD
EUROPÄISCHE NORM
NORME EUROPÉENNE april 2002
ICS 91.010.30
Slovenska izdaja
Evrokod – Osnove projektiranja konstrukcij
Eurocode – Basis of structural Eurocodes structuraux – Eurocode – Grundlagen der
design Eurocodes – Bases de calcul Tragwerksplanung
des structures

Ta evropski standard je sprejel CEN dne 2001-11-39. Članice CEN morajo izpolnjevati določila

poslovnika CEN/CENELEC, s katerim je predpisano, da mora biti ta standard brez kakršnihkoli

sprememb sprejet kot nacionalni standard.

Seznami najnovejših izdaj teh nacionalnih standardov in njihovi bibliografski podatki so na voljo vpri

osrednjem tajništvu sekretariatu ali članicah CEN.

Evropski standardi obstajajo v treh izvirnih izdajah (nemški, angleški in francoski). Izdaje v drugih

jezikih, ki jih članice CEN na lastno odgovornost prevedejo in izdajo ter prijavijo pri osrednjem tajništvu

sekretariatu CEN, veljajo kot uradne izdaje.

Članice CEN so nacionalne ustanove za standardizacijo Avstrije, Belgije, Češke republike, Danske,

Finske, Francije, Grčije, Irske, Islandije, Italije, Luksemburga, Malta, Nemčije, Nizozemske, Norveške,

Portugalske, Španije, Švedske, Švice in Združenega kraljestva.
CEN
Evropski komite za standardizacijo
European Committee for Standardization
Europäisches Komitee für Normung
Comité Européen de Normalisation
Osrednji sekretariat: Rue de Stassart 36, B-1050 Bruselj
© 2002 Avtorske pravice imajo vse države članice CEN. Ref. št. EN 1990:2002 E
---------------------- Page: 5 ----------------------
SIST EN 1990 : 2004
VSEBINA Stran

Predgovor .................................................................................................................................................6

Ozadje programa evrokodov....................................................................................................................6

Status in področje veljavnosti evrokodov .................................................................................................7

Nacionalne izdaje evrokodov ...................................................................................................................7

Zveze med evrokodi in harmoniziranimi tehničnimi specifikacijami (EN in ETA) za proizvode...............8

Dodatne informacije o EN 1990 ...............................................................................................................8

Nacionalni dodatki k EN 1990 ..................................................................................................................8

1 Splošno.................................................................................................................................................9

1.1 Področje uporabe ..............................................................................................................................9

1.2 Zveza z drugimi standardi .................................................................................................................9

1.3 Predpostavke...................................................................................................................................10

1.4 Razlikovanje med načeli in pravili za uporabo ................................................................................10

1.5 Izrazi in definicije .............................................................................................................................10

1.5.1 Skupni izrazi, uporabljeni v EN 1990 do EN 1999 .......................................................................10

1.5.2 Posebni izrazi, povezani s projektiranjem....................................................................................11

1.5.3 Izrazi, povezani z vplivi.................................................................................................................13

1.5.4 Izrazi, povezani z lastnostmi materiala in proizvodov..................................................................14

1.5.5 Izrazi, povezani z geometrijskimi podatki.....................................................................................14

1.5.6 Izrazi, povezani z računom (analizo) konstrukcije .......................................................................15

1.6 Simboli.............................................................................................................................................16

2 Zahteve...............................................................................................................................................18

2.1 Temeljne zahteve ............................................................................................................................18

2.2 Vodenje zanesljivosti.......................................................................................................................19

2.3 Projektna življenjska doba...............................................................................................................20

2.4 Trajnost............................................................................................................................................20

2.5 Vodenje kakovosti ...........................................................................................................................21

3 Načela projektiranja po metodi mejnih stanj ......................................................................................21

3.1 Splošno............................................................................................................................................21

3.2 Projektna (računska) stanja.............................................................................................................21

3.3 Mejna stanja nosilnosti ....................................................................................................................22

3.4 Mejna stanja uporabnosti ................................................................................................................22

3.5 Projektiranje na mejna stanja..........................................................................................................23

4 Osnovne spremenljivke ......................................................................................................................23

4.1 Vplivi ................................................................................................................................................23

4.1.1 Razvrstitev vplivov........................................................................................................................23

4.1.2 Karakteristične vrednosti vplivov..................................................................................................24

4.1.3 Druge reprezentativne vrednosti spremenljivih vplivov................................................................25

4.1.4 Predstavitev vplivov za utrujanje..................................................................................................25

4.1.5 Predstavitev dinamičnih vplivov ...................................................................................................26

---------------------- Page: 6 ----------------------
SIST EN 1990 : 2004

4.1.6 Geotehnični vplivi .........................................................................................................................26

4.1.7 Vplivi okolja...................................................................................................................................26

4.2 Lastnosti materiala in proizvodov....................................................................................................26

4.3 Geometrijski podatki........................................................................................................................27

5 Račun (analiza) konstrukcije in projektiranje, oprto na preskušanje..................................................27

5.1 Račun konstrukcije ..........................................................................................................................27

5.1.1 Računsko modeliranje..................................................................................................................27

5.1.2 Statični vplivi.................................................................................................................................27

5.1.3 Dinamični vplivi.............................................................................................................................28

5.1.4 Požarno varno projektiranje .........................................................................................................28

5.2 Projektiranje, oprto na preskušanje.................................................................................................29

6 Preverjanje z metodo delnih faktorjev ................................................................................................29

6.1 Splošno............................................................................................................................................29

6.2 Omejitve ..........................................................................................................................................29

6.3 Projektne vrednosti..........................................................................................................................30

6.3.1 Projektne vrednosti vplivov...........................................................................................................30

6.3.2 Projektne vrednosti učinkov vplivov .............................................................................................30

6.3.3 Projektne vrednosti lastnosti materiala in proizvodov..................................................................31

6.3.4 Projektne vrednosti geometrijskih podatkov.................................................................................31

6.3.5 Projektna odpornost .....................................................................................................................32

6.4 Mejna stanja nosilnosti ....................................................................................................................33

6.4.1 Splošno.........................................................................................................................................33

6.4.2 Preverjanje statičnega ravnotežja in odpornosti ..........................................................................33

6.4.3 Kombinacije vplivov (z izjemo utrujanja) ......................................................................................33

6.4.3.1 Splošno......................................................................................................................................33

6.4.3.2 Kombinacije vplivov za stalna in začasna projektna stanja (osnovne kombinacije).................34

6.4.3.3 Kombinacije vplivov za nezgodna projektna stanja ..................................................................35

6.4.3.4 Kombinacije vplivov za potresna projektna stanja ....................................................................35

6.4.4 Delni faktorji za vplive in kombinacije vplivov...............................................................................35

6.4.5 Delni faktorji za lastnosti materiala in proizvodov ........................................................................35

6.5 Mejna stanja uporabnosti ................................................................................................................36

6.5.1 Preverjanje ...................................................................................................................................36

6.5.2 Kriteriji uporabnosti.......................................................................................................................36

6.5.3 Kombinacije vplivov......................................................................................................................36

6.5.4 Delni faktorji za materiale.............................................................................................................37

Dodatek A1 (normativni): Uporaba pri stavbah......................................................................................38

A.1.1 Področje uporabe.........................................................................................................................38

A.1.2 Kombinacije vplivov......................................................................................................................38

A.1.2.1 Splošno .....................................................................................................................................38

A.1.2.2 Vrednosti faktorjev ψ ................................................................................................................38

---------------------- Page: 7 ----------------------
SIST EN 1990 : 2004

A.1.3 Mejna stanja nosilnosti.................................................................................................................39

A.1.3.1 Projektne vrednosti vplivov v stalnih in začasnih projektnih stanjih .........................................39

A.1.3.2 Projektne vrednosti vplivov v nezgodnih in potresnih projektnih stanjih...................................42

A.1.4 Mejna stanja uporabnosti.............................................................................................................42

A.1.4.1 Delni faktorji vplivov ..................................................................................................................42

A.1.4.2 Kriteriji uporabnosti ...................................................................................................................42

A.1.4.3 Navpični in vodoravni pomiki ....................................................................................................43

A.1.4.4 Nihanja ......................................................................................................................................44

Dodatek B (informativni): Vodenje konstrukcijske zanesljivosti gradbenih objektov .............................45

B.1 Namen in področje uporabe............................................................................................................45

B.2 Simboli ............................................................................................................................................45

B.3 Stopnjevanje zanesljivosti...............................................................................................................45

B.3.1 Razredi glede na posledice..........................................................................................................45

B.3.2 Stopnjevanje z vrednostmi β........................................................................................................46

B.3.3 Stopnjevanje z ukrepi, ki se nanašajo na delne faktorje..............................................................46

B.4 Stopnjevanje z revizijo projektiranja ...............................................................................................47

B.5 Stopnjevanje z nadzorom gradnje ..................................................................................................47

B.6 Delni faktorji za odpornost ..............................................................................................................48

Dodatek C (informativni): Osnove za projektiranje po metodi delnih faktorjev in analize zanesljivosti .49

C.1 Namen in področje uporabe ...........................................................................................................49

C.2 Simboli ............................................................................................................................................49

C.3 Uvod................................................................................................................................................50

C.4 Pregled metod zanesljivosti............................................................................................................50

C.5 Indeks zanesljivosti β......................................................................................................................51

C.6 Ciljne vrednosti indeksa zanesljivosti β ..........................................................................................52

C.7 Postopek za umerjanje projektnih vrednosti ..................................................................................52

C.8 Načini preverjanja zanesljivosti v evrokodih...................................................................................54

C.9 Delni faktorji v EN 1990 ..................................................................................................................55

C.10 Faktorji ψ .....................................................................................................................................56

Dodatek D (informativni): Projektiranje, oprto na preskušanje...............................................................57

D.1 Namen in področje uporabe ...........................................................................................................57

D.2 Simboli ............................................................................................................................................57

D.3 Vrste preskusov ..............................................................................................................................58

D.4 Načrtovanje preskusov ...................................................................................................................59

D.5 Določitev projektnih vrednosti.........................................................................................................61

D.6 Splošna načela za statistično izvrednotenje...................................................................................61

D.7 Statistična določitev posameznih lastnosti .....................................................................................62

D.7.1 Splošno ........................................................................................................................................62

D.7.2 Določitev s karakteristično vrednostjo .........................................................................................63

D.7.3 Neposredna določitev projektne vrednosti za preverjanje mejnih stanj nosilnosti......................64

D.8 Statistična določitev modelov odpornosti .......................................................................................64

---------------------- Page: 8 ----------------------
SIST EN 1990 : 2004

D.8.1 Splošno ........................................................................................................................................64

D.8.2 Standardni postopek izvrednotenja po metodi a) ........................................................................65

D.8.2.1 Splošno.....................................................................................................................................65

D.8.2.2 Standardni postopek.................................................................................................................65

D.8.3 Standardni postopek izvrednotenja po metodi b) ........................................................................69

D.8.4 Uporaba dodatnega predhodnega znanja...................................................................................69

Literatura ................................................................................................................................................71

---------------------- Page: 9 ----------------------
SIST EN 1990 : 2004
Predgovor

Ta dokument (EN 1990:2002) je pripravil tehnični odbor CEN/TC 250 Konstrukcijski evrokodi,

katerega sekretariat je na BSI.

Ta evropski standard mora postati nacionalni standard z objavo istovetnega besedila ali z uradno

razglasitvijo najpozneje do oktobra 2002, nacionalni standardi, ki so z njim v nasprotju, pa morajo biti

umaknjeni najpozneje marca 2010.
Ta dokument nadomešča ENV 1991-1:1994.
CEN/TC 250 je odgovoren za vse konstrukcijske evrokode.

Po določilih notranjih predpisov CEN/CENELEC so ta evropski standard dolžne sprejeti nacionalne

organizacije za standarde naslednjih držav: Avstrije, Belgije, Češke republike, Danske, Finske,

Francije, Grčije, Islandije, Irske, Italije, Luksemburga, Malte, Nemčije, Nizozemske, Norveške,

Portugalske, Španije, Švedske, Švice in Združenega kraljestva.
Ozadje programa evrokodov

Komisija Evropskih skupnosti se je v letu 1975 na podlagi 95. člena Rimske pogodbe odločila, da

sprejme akcijski program na področju gradbeništva. Cilj programa je bil odstraniti tehnične ovire pri

trgovanju in uskladiti tehnične specifikacije.

Znotraj tega programa je Komisija spodbudila pripravo niza usklajenih tehničnih pravil za projektiranje

gradbenih objektov, ki bi se sprva uporabljala kot alternativa različnim pravilom, veljavnim v

posameznih državah članicah, končno pa bi jih nadomestila v celoti.

Komisija je s pomočjo upravnega odbora, v katerem so bili predstavniki držav članic, petnajst let vodila razvoj

programa evrokodov, katerega rezultat je bila prva generacija evrokodov v osemdesetih letih 20. stoletja.

Leta 1989 so se Komisija in države članice EU in EFTA odločile, da na podlagi dogovora med Komisijo in

CEN z več pooblastili prenesejo pripravo in objavljanje evrokodov na CEN, da bi evrokodi v prihodnje imeli

status evropskih standardov (EN). To je evrokode dejansko povezalo z določbami vseh direktiv Sveta in/ali

odločbami Komisije, ki se nanašajo na evropske standarde (npr. Direktiva Sveta 89/106/EGS o gradbenih

proizvodih (CPD) in direktive Sveta 93/37/EGS, 92/50/EGS ter 89/440/EGS o javnih delih in storitvah ter

ustrezne direktive EFTA, ki so bile sprejete za uveljavitev notranjega trga).

Program konstrukcijskih evrokodov obsega naslednje standarde, ki imajo na splošno več delov:

EN 1990 Evrokod: Osnove projektiranja konstrukcij
EN 1991 Evrokod 1: Vplivi na konstrukcije
EN 1992 Evrokod 2: Projektiranje betonskih konstrukcij
EN 1993 Evrokod 3: Projektiranje jeklenih konstrukcij
EN 1994 Evrokod 4: Projektiranje sovprežnih jeklenih in betonskih konstrukcij
EN 1995 Evrokod 5: Projektiranje lesenih konstrukcij
EN 1996 Evrokod 6: Projektiranje zidanih konstrukcij
EN 1997 Evrokod 7: Geotehnično projektiranje
EN 1998 Evrokod 8: Projektiranje potresnoodpornih konstrukcij
EN 1999 Evrokod 9: Projektiranje aluminijskih konstrukcij

Dogovor med Komisijo Evropskih skupnosti in Evropskim komitejem za standardizacijo (CEN) o pripravi evrokodov za

projektiranje stavb in gradbenih inženirskih objektov (BC/CEN/03/89).
---------------------- Page: 10 ----------------------
SIST EN 1990 : 2004

Evrokodi priznavajo odgovornost pristojnih oblasti v vsaki državi članici in jim dopuščajo pravico, da

vrednosti, povezane z varnostjo, določajo na nacionalni ravni, od države do države različno.

Status in področje veljavnosti evrokodov

Članice EU in EFTA priznavajo evrokode kot referenčne dokumente za naslednje namene:

− kot način za dokazovanje ustreznosti stavb in gradbenih inženirskih objektov bistvenim

zahtevam Direktive Sveta 89/106/EGS, zlasti bistveni zahtevi št. 1 »Mehanska odpornost in

stabilnost« in bistveni zahtevi št. 2 »Varnost pri požaru«,

− kot podlago za specifikacijo pogodb za gradnjo gradbenih objektov in spremljajoče inženirske

storitve,

− kot ogrodje za pripravo harmoniziranih tehničnih specifikacij za gradbene proizvode (EN in

ETA).

Kjer se evrokodi nanašajo na gradbene objekte, so neposredno povezani z razlagalnimi dokumenti ,

navedenimi v 12. členu Direktive o gradbenih proizvodih (CPD), čeprav je njihova narava drugačna od

narave harmoniziranih standardov za proizvode . Zato morajo tehnični odbori CEN in/ali delovne

skupine EOTA, ki pripravljajo standarde za proizvode, upoštevati tehnične vidike evrokodov, da bi s

tem dosegli popolno usklajenost teh tehničnih specifikacij z evrokodi.

Evrokodi vsebujejo skupna pravila za vsakdanjo rabo pri projektiranju običajnih in inovativnih

konstrukcij kot celote ali posameznih konstrukcijskih delov. Evrokodi ne vsebujejo posebnih določb za

nenavadne oblike konstrukcij ali nenavadne projektne pogoje. V teh primerih je potrebno sodelovanje

z izvedenci.
Nacionalne izdaje evrokodov

Nacionalna izdaja evrokoda vsebuje poleg celotnega besedila evrokoda (z vsemi dodatki), kot ga je

objavil CEN, tudi morebitno nacionalno naslovnico, nacionalni predgovor in nacionalni dodatek.

Nacionalni dodatek lahko vsebuje le podatke o parametrih, ki so v evrokodu navedeni kot nacionalno

določeni parametri (NDP). Ti parametri veljajo za projektiranje konstrukcij stavb in gradbenih

inženirskih objektov v državi, v kateri bodo zgrajeni. To so:
− vrednosti in/ali razredi, kjer evrokodi dopuščajo alternative,
− vrednosti, kjer evrokodi navajajo le simbole,

− podatki, specifični za državo (geografski, podnebni itn.), kot je npr. karta snega,

− postopek, če jih evrokod dopušča več.
Nacionalni dodatek lahko vsebuje tudi:
− odločitev o uporabi informativnih dodatkov,

− napotke o dodatnih informacijah, ki niso v nasprotju z evrokodi, za pomoč uporabniku.

V skladu s 3.3. členom CPD je treba bistvene zahteve v razlagalnih dokumentih konkretizirati tako, da se pri tem vzpostavi

zveza med bistvenimi zahtevami in pooblastili za pripravo harmoniziranih EN in smernic ETA/ETA

V skladu z 12. členom CPD morajo razlagalni dokumenti:

a) konkretizirati bistvene zahteve s poenotenjem izrazov in tehničnih podlag ter z določitvijo razredov ali stopenj zahtevnosti

za vsako zahtevo, kadar je to potrebno,

b) nakazati metode za povezavo razredov ali stopenj zahtevnosti s tehničnimi specifikacijami, npr. metode računa in

dokazov, tehnična pravila za projektiranje ipd.,

c) biti uporabni kot podlaga za pripravo harmoniziranih standardov ali smernic za evropska tehnična soglasja. Evrokodi imajo

dejansko podobno
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.