kSIST FprEN 1993-1-8:2023
(Main)Eurocode 3 - Design of steel structures - Part 1-8: Joints
Eurocode 3 - Design of steel structures - Part 1-8: Joints
1.1 Scope of FprEN 1993-1-8
(1) FprEN 1993-1-8 provides rules for structural design of joints subject to predominantly static loading using all steel grades from S235 up to and including S700, unless otherwise stated in individual clauses.
NOTE As an alternative to the design rules provided in Clause 9, the design rules given in CEN/TR 1993-1-801 "Eurocode 3: Design of steel structures - Part 1 801: Hollow section joints design according to the component method" can be used.
(2) The provisions in this document apply to steels complying with the requirements given in EN 1993 1 1 and to material thickness greater than or equal to 3 mm, unless otherwise stated in individual clauses.
1.2 Assumptions
(1) Unless specifically stated, EN 1990, EN 1991 (all parts) and the other relevant parts of EN 1993-1 (all parts) apply.
(2) The design methods given in FprEN 1993-1-8 are applicable if:
- the execution quality is as specified in EN 1090-2,
and
- the construction materials and products used are as specified in the relevant parts of EN 1993 (all parts), or in the relevant material and product specifications.
Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 1-8: Anschlüsse
1.1 Anwendungsbereich von EN 1993 1 8
(1) EN 1993 1 8 enthält Regeln für die Tragwerksplanung von Anschlüssen aus Stahl mit allen Stahlsorten von S235 bis einschließlich S700 unter vorwiegend ruhender Belastung, sofern in einzelnen Abschnitten nicht anders angegeben.
ANMERKUNG Alternativ zu den Bemessungsregeln aus Abschnitt 9 können auch die Bemessungsregeln aus CEN/TS 1993 1 8010F0F „Eurocode 3: Bemessung und Konstruktion von Stahlbauten — Teil 1 801: Bemessung und Konstruktion von Anschlüssen mit Hohlprofilen entsprechend der Komponentenverfahren“ verwendet werden.
(2) Die Bestimmungen in diesem Dokument gelten für Stähle, die den Anforderungen aus EN 1993 1 1 entsprechen, und für Materialdicken größer oder gleich 3 mm, sofern in den jeweiligen Abschnitten nicht anders angegeben.
1.2 Annahmen
(1) Sofern nicht ausdrücklich angegeben, gelten EN 1990, EN 1991 (alle Teile) und die entsprechenden Teile von EN 1993 1 (alle Teile).
(2) Die Bemessungsverfahren nach EN 1993 1 8 sind anwendbar, wenn:
— die Qualität der Ausführung den Vorgaben aus EN 1090 2 entspricht,
und
— die verwendeten Baustoffe und -produkte den entsprechenden Teilen der EN 1993 (alle Teile) oder den entsprechenden Material- und Produktspezifikationen entsprechen.
Eurocode 3 - Calcul des structures en acier - Partie 1-8 : Assemblages
1.1 Domaine d'application du FprEN 1993-1-8
(1) Le FprEN 1993-1-8 fourni des règles pour le calcul structural d'assemblages soumis à un chargement essentiellement statique en utilisant toutes les nuances d'acier de S235 jusqu'à S700 inclus, sauf indication contraire dans certains paragraphes.
NOTE En alternative aux règles de calcul prévues à l'article 9, les règles de calcul données dans le document CEN/TR 1993-1-801 "Eurocode 3 : Calcul des structures en acier - Partie 1-801 : Calcul des assemblages de profils creux selon la méthode des composants" peuvent être utilisées.
(2) Les dispositions du présent document s'appliquent aux aciers conformes aux exigences de l'EN 1993-1-1 et aux épaisseurs de matériau supérieures ou égales à 3 mm, sauf indication contraire dans les clauses individuelles.
1.2 Hypothèses
(1) L'EN 1990, l'EN 1991 (toutes les parties) et les autres parties pertinentes de l'EN 1993-1 (toutes les parties) s'appliquent, sauf indications particulières.
(2) Les méthodes de calcul données dans le FprEN 1993-1-8 sont applicables si :
- la qualité de l’exécution est telle que spécifiée dans l'EN 1090 2, et
- les matériaux et produits de construction utilisés sont tels que spécifiés dans les parties correspondantes de l'EN 1993 (toutes les parties) ou dans les spécifications de matériaux et produits appropriées.
Evrokod 3 - Projektiranje jeklenih konstrukcij - 1-8. del: Spoji
1.1 Področje uporabe standarda EN 1993-1-8
(1) Ta dokument podaja metode za projektiranje spojev, izpostavljenih pretežno statični obremenitvi z uporabo vseh razredov jekla od S235 do vključno S700, razen če je v posameznih točkah drugače navedeno.
1.2 Predpostavke
(1) Predpostavke standardov EN 1990 in EN 1993-1-1 se uporabljajo tudi za ta dokument.
(2) Metode za projektiranje, podane v tem delu standarda EN 1993, se uporabljajo, če je kakovost gradnje takšna, kot je določeno v standardu EN 1090-2 ali EN 1090-4, ter so uporabljeni gradbeni materiali in izdelki iz ustreznih delov standarda EN 1993 ali ustreznih specifikacij za materiale in izdelke.
General Information
Relations
Overview
EN 1993-1-8:2024 - Eurocode 3: Design of steel structures - Part 1-8: Joints provides harmonised European rules for the structural design of steel joints subject to predominantly static loading. The standard covers joints made from steels S235 up to S700 and generally applies to material thicknesses ≥ 3 mm. It is intended for use alongside EN 1990, EN 1991 and other relevant parts of EN 1993 and assumes execution quality in accordance with EN 1090-2.
Key topics and requirements
- Scope & applicability
- Rules for bolted, riveted, pinned and welded joints under predominantly static loads.
- Applies to steels complying with EN 1993-1-1 and to material thickness ≥ 3 mm.
- Alternative design approach for hollow section joints referenced in CEN/TR 1993-1-801.
- Fasteners and bolted connections
- Treatment of bolt property classes, preloaded (slip-resistant) bolts, fit bolts and injection bolts.
- Design resistance for individual fasteners (shear, bearing, tension), group resistance and block tearing.
- Positioning of holes, prying forces and combined tension–shear effects.
- Welded connections
- Types and geometry of welds (fillet, butt, plug, flare groove), consumables and design throat/thickness.
- Design resistance of fillet and butt welds, eccentric single-sided welds, long joints and welds in cold-formed zones.
- Structural analysis of joints
- Global and local analysis methods: elastic, rigid‑plastic and elastic‑plastic approaches.
- Modelling beam-to-column joints, simplified approaches, moment–rotation curves, moment resistance, rotational stiffness and rotation capacity.
- Classification of joints by stiffness and moment resistance (rigid, semi‑rigid, simple).
- Special topics
- Hybrid connections, anchor bolts and fasteners to concrete, connections to unstiffened flanges, T‑stubs and H/I section joint behaviour.
Practical applications
- Design and verification of beam-to-column, beam-to-beam and member terminations in buildings, industrial halls, bridges and offshore structures.
- Selection and detailing of bolted or welded connections for fabricators and erection sequences.
- Assessment of joint rotational stiffness for framed structures and seismic/ultimate limit state checks.
Who should use this standard
- Structural engineers and designers of steel structures
- Steel fabricators and detailers
- Construction specification writers and project managers
- Notified bodies, building authorities and code auditors
Related standards
- EN 1990 (Basis of structural design)
- EN 1991 (Actions on structures)
- EN 1993-1-1 (General rules for steel structures)
- EN 1090-2 (Execution quality)
- CEN/TR 1993-1-801 (Hollow section joints - component method)
This standard is essential when designing safe, code-compliant steel joints; reference EN 1993-1-8:2024 when specifying connection types, fasteners, welds and joint analysis methods.
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1993-1-8:2024
01-julij-2024
Nadomešča:
SIST EN 1993-1-8:2005
SIST EN 1993-1-8:2005/AC:2009
Evrokod 3 - Projektiranje jeklenih konstrukcij - 1-8. del: Spoji
Eurocode 3 - Design of steel structures - Part 1-8: Joints
Eurocode 3 - Bemessung und Konstruktion von Stahlbauten - Teil 1-8: Anschlüsse
Eurocode 3 - Calcul des structures en acier - Partie 1-8 : Assemblages
Ta slovenski standard je istoveten z: EN 1993-1-8:2024
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.080.13 Jeklene konstrukcije Steel structures
SIST EN 1993-1-8:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
SIST EN 1993-1-8:2024
SIST EN 1993-1-8:2024
EN 1993-1-8
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2024
EUROPÄISCHE NORM
ICS 91.010.30; 91.080.13 Supersedes EN 1993-1-8:2005
English Version
Eurocode 3 - Design of steel structures - Part 1-8: Joints
Eurocode 3 - Calcul des structures en acier - Partie 1-8 : Eurocode 3 - Bemessung und Konstruktion von
Assemblages Stahlbauten - Teil 1-8: Anschlüsse
This European Standard was approved by CEN on 1 January 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC 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
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1993-1-8:2024 E
worldwide for CEN national Members.
SIST EN 1993-1-8:2024
Contents Page
European foreword . 6
0 Introduction . 8
1 Scope . 11
2 Normative references . 11
3 Terms, definitions and symbols . 11
3.1 Terms and definitions . 11
3.2 Symbols and abbreviations . 13
4 Basis of design . 33
4.1 General rules . 33
4.1.1 Basic requirements . 33
4.1.2 Additional requirements. 33
4.2 Design assumptions . 33
4.3 Structural properties of joints . 34
4.3.1 General. 34
4.3.2 Partial factors . 34
4.4 Hybrid connections . 35
4.5 Joints loaded in shear subject to impact, vibration and/or load reversal . 35
4.6 Eccentricity at intersections . 35
5 Connections using bolts, rivets or pins . 36
5.1 Bolts, nuts and washers . 36
5.1.1 Property classes . 36
5.1.2 Preloaded bolts . 36
5.2 Rivets . 37
5.3 Anchor bolts and fasteners between steel and concrete . 37
5.4 Bolted connections . 37
5.4.1 Categories of bolted connections . 37
5.4.2 Injection bolts . 38
5.4.3 Hybrid connections . 38
5.4.4 Connections with lug angles. 38
5.5 Pin connections . 40
5.6 Riveted connections . 41
5.7 Design criteria . 41
5.7.1 Design criteria for bolted connections . 41
5.7.2 Design criteria for connections with injection bolts . 43
5.7.3 Design criteria for pin connections . 44
5.7.4 Design criteria for riveted connections . 46
5.8 Positioning of holes for bolts and rivets . 47
5.9 Design resistance of individual fasteners subject to shear, bearing and/or tension . 49
5.9.1 Rivets, and bolts in normal round or slotted holes . 49
5.9.2 Fit bolts . 53
5.9.3 Bolts in tapped holes . 54
5.9.4 Injection bolts . 55
5.9.5 Prying forces . 56
5.9.6 Fasteners between steel and concrete . 56
5.10 Design slip resistance of individual preloaded bolts . 56
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5.10.1 General . 56
5.10.2 Combined tension and shear . 57
5.11 Design resistance of a group of fasteners loaded in bearing type connections subject
to axial force . 58
5.12 Design resistance of a group of fasteners in slip-resistant connections subject to
axial force . 59
5.13 Design resistance of Category A, B, and C connections subject to bending and axial
force . 59
5.14 Design block tearing resistance . 60
5.15 Design resistance of angles connected by one leg and other asymmetrically
connected members in tension . 62
6 Welded connections . 63
6.1 General . 63
6.2 Welding consumables . 63
6.3 Geometry and dimensions. 63
6.3.1 Type of weld . 63
6.3.2 Fillet welds . 64
6.3.3 Fillet welds all round . 66
6.3.4 Butt welds . 66
6.3.5 Plug welds . 66
6.3.6 Flare groove welds . 66
6.4 Welds with packings . 67
6.5 Design resistance of fillet welds . 68
6.5.1 Length of welds . 68
6.5.2 Design throat thickness . 68
6.5.3 Design resistance of fillet welds . 69
6.6 Design resistance of fillet welds all round . 72
6.7 Design resistance of butt welds . 72
6.7.1 Full penetration butt welds . 72
6.7.2 Partial penetration butt welds . 72
6.7.3 T-butt joints . 73
6.8 Design resistance of plug welds . 73
6.9 Distribution of forces . 73
6.10 Connections to unstiffened flanges . 74
6.11 Design resistance of long joints . 76
6.12 Eccentrically loaded single-sided fillet or single-sided partial penetration butt welds . 76
6.13 Angles connected by one leg . 77
6.14 Welding in cold-formed zones . 77
7 Structural analysis . 78
7.1 Global analysis . 78
7.1.1 General . 78
7.1.2 Elastic global analysis . 78
7.1.3 Rigid-plastic global analysis . 79
7.1.4 Elastic-plastic global analysis . 80
7.1.5 Global analysis of hollow section lattice girders . 80
7.2 Modelling of beam-to-column joints . 82
7.2.1 Scope of application . 82
7.2.2 General approach . 83
7.2.3 Simplified approach . 84
7.2.4 Design moment-rotation curve . 86
7.2.5 Moment resistance . 87
7.2.6 Rotational stiffness . 87
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7.2.7 Rotation capacity . 88
7.3 Classification of joints . 88
7.3.1 General. 88
7.3.2 Classification by rotational stiffness . 88
7.3.3 Classification by moment resistance . 90
8 Structural joints connecting H or I sections . 92
8.1 General. 92
8.2 Structural properties . 97
8.3 Equivalent T-stub in tension . 98
8.3.1 Application . 98
8.3.2 Modes of failure . 98
8.3.3 Total effective length . 98
8.3.4 Design tension resistance . 98
8.3.5 Stiffness coefficient . 101
8.3.6 Individual bolt rows, bolt groups and groups of bolt rows. 101
8.4 Equivalent T-stub in compression . 101
8.4.1 Application . 101
8.4.2 Total effective length and width . 101
8.4.3 Design compression resistance . 102
8.4.4 Stiffness coefficient . 103
9 Hollow section joints . 104
9.1 General. 104
9.2 Parameters for hollow section joints . 104
9.3 Specific requirements . 107
9.4 Design . 108
9.4.1 General. 108
9.4.2 Failure modes for hollow section joints . 112
9.5 Design resistance of welds . 116
9.6 Welded joints between brace members and CHS chords . 116
9.6.1 General. 116
9.6.2 Uniplanar joint configurations . 117
9.6.3 Multiplanar joint configurations . 123
9.7 Welded joints between plates, CHS or RHS brace members, and RHS chord members . 124
9.7.1 General. 124
9.7.2 Uniplanar joint configurations . 125
9.7.3 Multiplanar joint configurations . 136
9.8 Welded joints between CHS or RHS brace members, and I or H section chords . 137
9.9 Welded overlap joints between CHS or RHS brace members, and CHS, RHS, I, H or
channel section chord members . 141
Annex A (normative) Structural properties of basic components . 146
A.1 Use of this annex . 146
A.2 Scope and field of application . 146
A.3 General. 146
A.4 Column web panel in shear . 146
A.5 Column web in transverse compression . 152
A.6 Column web in transverse tension . 156
A.7 Column flange in bending . 158
A.8 End plate in bending . 163
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A.9 Flange cleat in bending . 167
A.10 Beam or column flange and web in compression . 169
A.11 Beam or column web in tension . 169
A.12 Plate in tension or compression . 170
A.13 Bolts in tension . 170
A.14 Bolts in shear . 170
A.15 Bearing at bolt holes . 171
A.16 Concrete and base plate in compression . 173
A.17 Base plate in bending under tension . 173
A.18 Anchor bolt in tension. 174
A.19 Fasteners between steel and concrete in tension . 175
A.20 Anchor bolts in shear . 176
A.21 Fasteners between steel and concrete in shear . 176
A.22 Welds . 176
A.23 Beam haunch in compression . 177
Annex B (normative) Design of moment-resisting beam-to-column joints and splices . 178
B.1 Use of this annex . 178
B.2 Scope and field of application . 178
B.3 Design resistance . 178
B.4 Rotational stiffness . 185
B.5 Rotation capacity . 189
Annex C (normative) Design of nominally pinned connections . 192
C.1 Use of this annex . 192
C.2 Scope and field of application . 192
C.3 Ductility and rotation capacity requirements. 193
C.4 Design resistances . 196
Annex D (normative) Design of column bases. 208
D.1 Use of this annex . 208
D.2 Scope and field of application . 208
D.3 Design of column bases with anchor bolts . 209
D.4 Design resistance of column bases with fasteners between steel and concrete . 213
Bibliography . 215
SIST EN 1993-1-8:2024
European foreword
This document (EN 1993-1-8:2024) has been prepared by Technical Committee CEN/TC 250 “Structural
Eurocodes”, the secretariat of which is held by BSI. CEN/TC 250 is responsible for all Structural
Eurocodes and has been assigned responsibility for structural and geotechnical design matters by CEN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by September 2027 and conflicting national standards shall
be withdrawn at the latest by March 2028.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 1993-1-8:2005 and its amendments and corrigenda.
The first generation of EN Eurocodes was published between 2002 and 2007. This document forms part
of the second generation of the Eurocodes, which have been prepared under Mandate M/515 issued to
CEN by the European Commission and the European Free Trade Association.
The Eurocodes have been drafted to be used in conjunction with relevant execution, material, product
and test standards, and to identify requirements for execution, materials, products and testing that are
relied upon by the Eurocodes.
The Eurocodes recognize the responsibility of each Member State and have safeguarded their right to
determine values related to regulatory safety matters at national level through the use of National
Annexes.
The main changes compared to the previous edition are listed below:
— the Scope was extended to steel grades up to S700;
— the Scope was extended to the design of nominally pinned connections;
— new provisions for the design and fabrication of connections with bolts in threaded holes;
— new provisions for the design of butt welds in steel grades higher than S460;
— new provisions for the design of column bases with fasteners between steel and concrete;
— revision of the Table of contents, with four Normative Annexes (A-D) summarizing (A) the structural
properties of basic components; (B) provisions for the design of moment-resisting beam-to-column
joints and splices; (C) provisions for the design of nominally pinned connections (new); and (D)
provisions for the design of column bases;
— a non-linear model to calculate the deformation of the bolt hole due to bearing of fasteners against
the plate was introduced, including a revised formulation for the design value of bearing resistance;
— revision of the requirements for the design of a group of fasteners in bearing-type connections;
— an alternative method for the verification of the design resistance of welds explicitly accounting for
the filler material properties was introduced;
— revision of the requirements for the design of pins;
— revision of the requirements for the evaluation of the design resistance and stiffness coefficients of
the component “column web panel in shear”;
— revision and clarification of the design tables for hollow section joints.
SIST EN 1993-1-8:2024
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
SIST EN 1993-1-8:2024
0 Introduction
0.1 Introduction to the Eurocodes
The Structural Eurocodes comprise the following standards generally consisting of a number of Parts:
— EN 1990, Eurocode: Basis of structural and geotechnical design
— EN 1991, Eurocode 1: Actions on structures
— EN 1992, Eurocode 2: Design of concrete structures
— EN 1993, Eurocode 3: Design of steel structures
— EN 1994, Eurocode 4: Design of composite steel and concrete structures
— EN 1995, Eurocode 5: Design of timber structures
— EN 1996, Eurocode 6: Design of masonry structures
— EN 1997, Eurocode 7: Geotechnical design
— EN 1998, Eurocode 8: Design of structures for earthquake resistance
— EN 1999, Eurocode 9: Design of aluminium structures
— New parts are under development, e.g. Eurocode for design of structural glass.
0.2 Introduction to EN 1993
EN 1993 (all parts) applies to the design of buildings and civil engineering works in steel. It complies with
the principles and requirements for the safety and serviceability of structures, the basis of their design
and verification that are given in EN 1990 — Basis of structural and geotechnical design.
EN 1993 (all parts) is concerned only with requirements for resistance, serviceability, durability and fire
resistance of steel structures. Other requirements, e.g. concerning thermal or sound insulation, are not
covered.
EN 1993 is subdivided in various parts:
EN 1993-1, Design of Steel Structures — Part 1: General rules and rules for buildings;
EN 1993-2, Design of Steel Structures — Part 2: Bridges;
EN 1993-3, Design of Steel Structures — Part 3: Towers, masts and chimneys;
EN 1993-4, Design of Steel Structures — Part 4: Silos and tanks;
EN 1993-5, Design of Steel Structures — Part 5: Piling;
EN 1993-6, Design of Steel Structures — Part 6: Crane supporting structures;
EN 1993-7, Design of Steel Structures — Part 7: Sandwich panels.
EN 1993-1 in itself does not exist as a physical document, but comprises the following 14 separate parts,
the basic part being EN 1993-1-1:
EN 1993-1-1, Design of Steel Structures — Part 1-1: General rules and rules for buildings;
EN 1993-1-2, Design of Steel Structures — Part 1-2: Structural fire design;
SIST EN 1993-1-8:2024
EN 1993-1-3, Design of Steel Structures — Part 1-3: Cold-formed members and sheeting;
NOTE Cold-formed welded hollow sections supplied according to EN 10219 (all parts) are covered in
EN 1993-1-1.
EN 1993-1-4, Design of Steel Structures — Part 1-4: Stainless steel structures;
EN 1993-1-5, Design of Steel Structures — Part 1-5: Plated structural elements;
EN 1993-1-6, Design of Steel Structures — Part 1-6: Strength and stability of shell structures;
EN 1993-1-7, Design of Steel Structures — Part 1-7: Plate assemblies with elements under transverse loads;
EN 1993-1-8, Design of Steel Structures — Part 1-8: Joints;
EN 1993-1-9, Design of Steel Structures — Part 1-9: Fatigue;
EN 1993-1-10, Design of Steel Structures — Part 1-10: Material toughness and through-thickness
properties;
EN 1993-1-11, Design of Steel Structures — Part 1-11: Tension components;
EN 1993-1-12, Design of Steel Structures — Part 1-12: Additional rules for steel grades up to S960;
EN 1993-1-13, Design of Steel Structures — Part 1-13: Beams with large web openings;
EN 1993-1-14, Design of Steel Structures — Part 1-14: Design assisted by finite element analysis.
All parts numbered EN 1993-1-2 to EN 1993-1-14 treat general topics that are independent from the
structural type like structural fire design, cold-formed members and sheeting, stainless steel structures,
plated structural elements, etc.
All parts numbered EN 1993-2 to EN 1993-7 treat topics relevant for a specific structural type like steel
bridges, towers, masts and chimneys, silos and tanks, piling, crane supporting structures, etc. EN 1993-2
to EN 1993-7 refer to the generic rules in EN 1993-1 and supplement, modify or supersede them.
0.3 Introduction to EN 1993-1-8
EN 1993-1-8 gives rules for the design of joints in steel structures. It includes rules for resistance,
stiffness, and deformation capacity of components and recommendations for the properties to be used in
analyses. It assumes that the execution of its provisions follows the requirements given in EN 1090-2.
0.4 Verbal forms used in the Eurocodes
The verb “shall” expresses a requirement strictly to be followed and from which no deviation is permitted
in order to comply with the Eurocodes.
The verb “should” expresses a highly recommended choice or course of action. Subject to national
regulation and/or any relevant contractual provisions, alternative approaches could be used/adopted
where technically justified.
The verb “may” expresses a course of action permissible within the limits of the Eurocodes.
The verb “can” expresses possibility and capability; it is used for statements of fact and clarification of
concepts.
SIST EN 1993-1-8:2024
0.5 National Annex for EN 1993-1-8
National choice is allowed in this document where explicitly stated within notes. National choice includes
the selection of values for Nationally Determined Parameters (NDPs).
The national standard implementing EN 1993-1-8 can have a National Annex containing all national
choices to be used for the design of buildings and civil engineering works to be constructed in the relevant
country.
When no national choice is given, the default choice given in this document is to be used.
When no national choice is made and no default is given in this document, the choice can be specified by
a relevant authority or, where not specified, agreed for a specific project by appropriate parties.
National choice is allowed in EN 1993-1-8 through notes to the following clauses:
4.2(4) 4.3.1(2) 4.3.2(1) 5.1.1(3)
5.2(1) 5.9.3(1) 5.9.3(3) 6.2(3)
7.3.1(1) 9.1(5) 9.1(5) A.17.1(2)
B.3.2.2(9) C.2(5)
The National Annex can contain, directly or by reference, non-contradictory complementary information
for ease of implementation, provided it does not alter any provisions of the Eurocodes.
SIST EN 1993-1-8:2024
1 Scope
1.1 Scope of EN 1993-1-8
(1) EN 1993-1-8 provides rules for structural design of joints subject to predominantly static loading
using all steel grades from S235 up to and including S700, unless otherwise stated in individual clauses.
NOTE As an alternative to the design rules provided in Clause 9, the design rules given in CEN/TS 1993-1-801
“Eurocode 3: Design of steel structures — Part 1-801: Hollow section joints design according to the component
method” can be used.
(2) The provisions in this document apply to steels complying with the requirements given in
EN 1993-1-1 and to material thickness greater than or equal to 3 mm, unless otherwise stated in
individual clauses.
1.2 Assumptions
(1) Unless specifically stated, EN 1990, EN 1991 (all parts) and the other relevant parts of EN 1993-1 (all
parts) apply.
(2) The design methods given in EN 1993-1-8 are applicable if:
— the execution quality is as specified in EN 1090-2,
and
— the construction materials and products used are as specified in the relevant parts of EN 1993 (all
parts), or in the relevant material and product specifications.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1090-2:2018, Execution of steel structures and aluminium structures — Part 2: Technical requirements
for steel structures
EN 1990, Eurocode — Basis of structural and geotechnical design
EN 1991 (all parts), Eurocode 1 — Actions on structures
EN 1993 (all parts), Eurocode 3 — Design of steel structures
EN 1993-1-1:2022, Eurocode 3 — Design of steel structures — Part 1-1: General rules and rules for
buildings
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1993-1-1 and the following
apply.
Under preparation. Stage at the time of publication: prCEN/TS 1993-1-801.
SIST EN 1993-1-8:2024
3.1.1
joint
zone where two members are interconnected
3.1.2
joint configuration
type or layout of the joint or joints in a zone within which the axes of two or more inter-connected
members intersect
Note 1 to entry: See Figure 3.1 and Figure 8.1.
Note 2 to entry: An in-plane major-axis beam-to-column joint consists of a web panel and either one connection
(single-sided joint configuration) or two connections (double-sided joint configuration).
Joint = web panel in shear + connection Left Joint = web panel in shear + left connection
Right joint = web panel in shear + right connection
a) Single-sided joint configuration b) Double-sided joint configuration
Key
1 web panel in shear
2 connection
3 components (e.g. bolts, end plate)
4 supported member
Figure 3.1 — Parts of a major-axis beam-to-column joint configuration
3.1.3
connection
set of components used to transfer forces and/or moments at the interface of the two connected members
in a joint
3.1.4
connected member
any member that is joined to another member
3.1.5
basic component
basic component of a joint
part of a joint that makes a contribution to one or more of its structural properties
SIST EN 1993-1-8:2024
3.1.6
structural properties
structural properties of a joint
resistance to internal forces and moments in the connected members, rotational stiffness and rotation
capacity
3.1.7
rotational stiffness
moment required to produce a unit rotation in a joint
3.1.8
rotation capacity
angle through which the joint can rotate for a given plastic resistance
3.1.9
injection bolt
special bolt that allows filling of the clearance between the bolt and the inside surface of the hole by
injecting resin through a small hole in the head of the bolt
3.1.10
uniplanar joint
joint that connects members in a lattic
...
Frequently Asked Questions
kSIST FprEN 1993-1-8:2023 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Eurocode 3 - Design of steel structures - Part 1-8: Joints". This standard covers: 1.1 Scope of FprEN 1993-1-8 (1) FprEN 1993-1-8 provides rules for structural design of joints subject to predominantly static loading using all steel grades from S235 up to and including S700, unless otherwise stated in individual clauses. NOTE As an alternative to the design rules provided in Clause 9, the design rules given in CEN/TR 1993-1-801 "Eurocode 3: Design of steel structures - Part 1 801: Hollow section joints design according to the component method" can be used. (2) The provisions in this document apply to steels complying with the requirements given in EN 1993 1 1 and to material thickness greater than or equal to 3 mm, unless otherwise stated in individual clauses. 1.2 Assumptions (1) Unless specifically stated, EN 1990, EN 1991 (all parts) and the other relevant parts of EN 1993-1 (all parts) apply. (2) The design methods given in FprEN 1993-1-8 are applicable if: - the execution quality is as specified in EN 1090-2, and - the construction materials and products used are as specified in the relevant parts of EN 1993 (all parts), or in the relevant material and product specifications.
1.1 Scope of FprEN 1993-1-8 (1) FprEN 1993-1-8 provides rules for structural design of joints subject to predominantly static loading using all steel grades from S235 up to and including S700, unless otherwise stated in individual clauses. NOTE As an alternative to the design rules provided in Clause 9, the design rules given in CEN/TR 1993-1-801 "Eurocode 3: Design of steel structures - Part 1 801: Hollow section joints design according to the component method" can be used. (2) The provisions in this document apply to steels complying with the requirements given in EN 1993 1 1 and to material thickness greater than or equal to 3 mm, unless otherwise stated in individual clauses. 1.2 Assumptions (1) Unless specifically stated, EN 1990, EN 1991 (all parts) and the other relevant parts of EN 1993-1 (all parts) apply. (2) The design methods given in FprEN 1993-1-8 are applicable if: - the execution quality is as specified in EN 1090-2, and - the construction materials and products used are as specified in the relevant parts of EN 1993 (all parts), or in the relevant material and product specifications.
kSIST FprEN 1993-1-8:2023 is classified under the following ICS (International Classification for Standards) categories: 91.010.30 - Technical aspects; 91.080.13 - Steel structures. The ICS classification helps identify the subject area and facilitates finding related standards.
kSIST FprEN 1993-1-8:2023 has the following relationships with other standards: It is inter standard links to SIST EN 1993-1-8:2005, SIST EN 1993-1-8:2005/AC:2009. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
kSIST FprEN 1993-1-8:2023 is associated with the following European legislation: EU Directives/Regulations: 305/2011; Standardization Mandates: M/515. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
You can purchase kSIST FprEN 1993-1-8:2023 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.
Die Norm kSIST FprEN 1993-1-8:2023 stellt einen bedeutenden Beitrag zur Regelsetzung im Bereich des Stahlbaus dar, insbesondere in Bezug auf die Konstruktion von Verbindungen. Sie bietet klare Richtlinien für das strukturtechnische Design von Verbindungen, die überwiegend statischen Lasten ausgesetzt sind und deckt alle Stahlgüten von S235 bis einschließlich S700 ab. Dies ermöglicht eine breite Anwendung, da die Norm für eine Vielzahl von Stahlbauprojekten genutzt werden kann. Ein wesentlicher Vorteil dieser Norm liegt in ihrer umfangreichen Anwendbarkeit und den klaren Vorgaben für die Materialdicken, die gleich oder größer als 3 mm sein müssen. Die Norm distanziert sich zudem von anderen Regelungen, indem sie den Fachleuten die Möglichkeit gibt, alternative Entwurfsvorschriften gemäß CEN/TR 1993-1-801 zu verwenden. Dies schafft Flexibilität für Ingenieure, die an der Konstruktion von hohlprofilierten Verbindungen arbeiten. Die Konsistenz mit den allgemeinen Eurocodes, insbesondere EN 1990 und EN 1991 sowie anderen relevanten Teilen von EN 1993, sorgt für eine umfassende Basis, auf der Ingenieure ihre Entwürfe entwickeln können. Diese Verbindung zu den bestehenden Normen stärkt die Relevanz und Vertrautheit der Norm im Bereich der Stahlbauplanung. Ein weiterer positiver Aspekt ist die Berücksichtigung der Ausführungsqualität gemäß EN 1090-2, was einen effizienten und sicheren Einsatz der Norm in der Praxis fördert. Die klare Struktur der Norm und die detaillierte Beschreibung der Anwendungsvoraussetzungen tragen dazu bei, Missverständnisse zu vermeiden und die Qualität im Stahlbau zu erhöhen. Insgesamt weist kSIST FprEN 1993-1-8:2023 hohe Relevanz für die Gestaltung von Stahlkonstruktionen auf und unterstützt Ingenieure dabei, Verbindungen effizient und sicher zu entwerfen.
La norme kSIST FprEN 1993-1-8:2023, intitulée "Eurocode 3 - Design des structures en acier - Partie 1-8 : Joints", offre un cadre de référence essentiel pour la conception des joints dans les structures en acier. Son champ d'application est clairement défini, précisant que les règles s'appliquent aux joints soumis à des charges principalement statiques et couvrent une large gamme de qualités d'acier, allant de S235 à S700. L'une des principales forces de cette norme réside dans la flexibilité qu'elle offre grâce à l'alternative de conception mentionnée dans la Clause 9, où les règles de conception selon le document CEN/TR 1993-1-801 peuvent également être appliquées. Cette flexibilité permet aux ingénieurs d'adapter leurs méthodes de conception en fonction des besoins spécifiques de chaque projet. La norme stipule également des exigences précises concernant l'épaisseur des matériaux, indiquant que les dispositions s'appliquent aux aciers dont l'épaisseur est supérieure ou égale à 3 mm, ce qui renforce la fiabilité et la sécurité des structures construites selon ses recommandations. De plus, les présomptions énoncées en section 1.2 assurent une intégration harmonieuse avec d'autres normes pertinentes, telles que les EN 1990 et EN 1991, garantissant ainsi que les méthodes de conception sont compatibles et cohérentes avec les pratiques établies. En termes de pertinence, la norme FprEN 1993-1-8 représente une avancée significative dans la standardisation des pratiques de conception des joints en acier, répondant à des exigences contemporaines en matière de sécurité et de performance. Son adoption par les professionnels du secteur contribue non seulement à la durabilité des structures mais aussi à l'uniformisation des méthodes de conception à travers les projets d'ingénierie. La standardisation introduite par cette norme est donc cruciale pour garantir la qualité et la sécurité des constructions en acier à l’échelle européenne.
kSIST FprEN 1993-1-8:2023 표준은 주로 정적인 하중을 받는 조인트의 구조적 설계를 위한 규칙을 제시하고 있으며, S235에서 S700까지의 모든 강재 등급을 적용 가능하다는 점에서 다채로운 사용성을 지니고 있습니다. 이 표준의 범위는 조인트 설계에 필요한 명확한 기준을 제공함으로써, 다양한 구조물에서의 안전성과 내구성을 보장하는 데 중요한 역할을 합니다. 이 표준의 강점 중 하나는 조인트 설계에 관련된 다양한 대체 설계 규칙을 제시함으로써, 엔지니어들이 상황에 맞는 최적의 방법을 선택할 수 있도록 유도한다는 점입니다. 특히, Clause 9에서 제공하는 설계 규칙 외에도 CEN/TR 1993-1-801을 통한 호로우 섹션 조인트 디자인 방법을 제시하여 설계자로 하여금 보다 유연하게 접근할 수 있게 합니다. 이러한 유연성은 특히 복잡한 구조물에서 큰 장점을 발휘할 것입니다. 또한, kSIST FprEN 1993-1-8:2023은 EN 1993-1-1의 요구 사항을 준수하는 강재와 두께가 3mm 이상의 재료에 적용 가능하다는 점에서, 사용 범위가 넓고 실용적입니다. 이 외에도, 구조 자재와 제품들이 EN 1090-2의 실행 품질과 EN 1993의 관련 부분에 규정된 자재 및 제품 사양을 충족해야 함을 명시하여, 품질 관리를 강화하고 있습니다. 결론적으로, kSIST FprEN 1993-1-8:2023 표준은 조인트 설계에 대한 명확한 가이드라인과 강력한 품질 보증 체계를 제공함으로써, 현대적이고 안전한 강구조물 설계에 필수적인 표준으로 자리 잡고 있습니다. 이러한 점에서, 이 표준은 조인트 설계의 중요성을 재확인시키며, 관련 분야 종사자들에게 매우 중요한 자료라 할 수 있습니다.
kSIST FprEN 1993-1-8:2023は、鋼構造物の設計における接合部の標準化文書であり、その範囲は非常に明確です。この文書は、主に静的荷重を受ける接合部の設計ルールを提供しており、S235からS700までのすべての鋼材グレードに適用されます。また、個々の条項で特に明記されていない限り、材料の厚さは3mm以上でなければなりません。この明確な適用範囲は、設計者が遵守すべき基準を示すことで、建設プロジェクトにおける整合性と安全性を強化しています。 この標準の強みは、接合部の設計に関する具体的で詳細なガイドラインを提供する点にあります。特に、EN 1090-2で指定された施工品質と、関連するEN 1993の部品または材質および製品仕様に従った建設材料と製品の使用に関する条件を明示しているため、設計者は安心してこの基準に基づいて設計を行うことができます。 さらに、FprEN 1993-1-8では、Clause 9に記載された設計ルールの代替として、CEN/TR 1993-1-801に基づく空洞断面接合部の設計ルールも使用可能です。この柔軟性は、様々な設計ニーズに応じた適応力を高めており、複雑なプロジェクトにおいても有用です。 この標準は、鋼構造物の設計における重要性と関連性を十分に示しており、特に接合部の安全かつ効率的な設計を求める場合において、不可欠なリソースとなっています。設計者にとっての使用可能性と、特定の要件に応じた選択肢の幅広さが、この文書の持つ大きな利点です。
The standard kSIST FprEN 1993-1-8:2023, titled "Eurocode 3 - Design of steel structures - Part 1-8: Joints," provides a comprehensive framework for the structural design of steel joints under predominantly static loading conditions. It stipulates rules applicable to a range of steel grades from S235 to S700, ensuring flexibility and inclusiveness in design approaches. This standard stands out for its detailed instructions, which cover various joint configurations, thereby catering to a diverse spectrum of engineering needs. One of the primary strengths of FprEN 1993-1-8 is its focus on providing alternative design rules through reference to CEN/TR 1993-1-801 for hollow section joints. This offers engineers a valuable option that enhances the flexibility of design methodologies, allowing for efficient adaptation to specific project requirements. The scope extends to ensure compatibility with steels that meet the requirements outlined in EN 1993-1-1, addressing material thickness of 3 mm and upwards, which reinforces the standard's practicality for a wide array of structural applications. Furthermore, the document aligns with crucial standards such as EN 1090-2, which highlight the necessity of execution quality, thus promoting safety and reliability in steel construction. Another significant aspect of this standard is the clear division of clauses that outline assumptions and applicable design conditions. This clarity aids in ensuring that engineers can follow the provisions aptly, minimizing the possibility of misinterpretation during the design process. By integrating compliance requirements with other parts of EN 1993-1 and EN 1990, the standard ensures a cohesive approach to structural design, crucial for maintaining safety and performance across different projects. Overall, kSIST FprEN 1993-1-8:2023 is a pivotal reference for engineers involved in the design of steel structures, emphasizing its relevance in contemporary construction practices and its role in facilitating effective and safe structural assemblies.
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