SIST EN 1993-1-8:2024/oprA1:2026

SLOVENSKI STANDARD
01-junij-2026
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/prA1
ICS:
91.010.30 Tehnični vidiki Technical aspects
91.080.13 Jeklene konstrukcije Steel structures
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
EN 1993-1-8:2024
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
April 2026
ICS 91.010.30; 91.080.13
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 draft amendment is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 250.

This draft amendment A1, if approved, will modify the European Standard EN 1993-1-8:2024. If this draft becomes an
amendment, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for
inclusion of this amendment into the relevant national standard without any alteration.

This draft amendment was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1993-1-8:2024/prA1:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Modifications to the Introduction . 4
2 Modification to Clause 1, "Scope" . 4
3 Modifications to Clause 2, "Normative references" . 5
4 Modifications to Clause 3, "Terms, definitions and symbols" . 5
5 Modifications to Clause 4, “Basis of design” . 5
6 Modifications to Clause 5, "Connections using bolts, rivets or pins" . 5
7 Modifications to Clause 6, "Welded connections" . 9
8 Modifications to Clause 7, "Structural analysis" . 11
9 Modifications to Clause 8, "Structural joints connecting H or I sections" . 12
10 Modifications to Clause 9, "Hollow section joints" . 14
11 Modifications to Annex A (normative), "Structural properties of basic components" . 20
12 Modifications to Annex B (normative), "Design of moment-resisting beam-to-column
joints and splices” . 26
13 Modifications to Annex C (normative), "Design of nominally pinned connections”. 27
14 Modifications to Annex D (normative), "Design of column bases" . 29
15 Modifications to the Bibliography . 29

European foreword
This document (EN 1993-1-8:2024/prA1:2026) 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 document is currently submitted to the CEN Enquiry.
This document will amend EN 1993-1-8:2024.
The following main changes to EN 1993-1-8:2024 are included in the amendment:
 revision of the requirements for ductility and rotation capacity of nominally pinned connections;
 revision of the requirements for evaluation of the design bearing resistance of the group of bolts per
cleat on the supporting member in nominally pinned connections;
 correction of technical and editorial points in EN 1993-1-8:2024 to increase the clarity and user
friendliness.
NOTE Some modifications are purely editorial corrections to improve the quality of the document and these
will not be tagged in the consolidated publication, as noted after the modification.
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.
1 Modifications to the Introduction
In 0.1, replace “— New parts are under development, e.g. Eurocode for design of structural glass”
with “— EN 19100, Eurocode 10: Design of glass structures”.
Add the following new list item: “— New parts are under development, e.g. EN 19101 Eurocode 11 for
design of fibre-polymer composite structures and EN 19102 Eurocode 12 for design of tensioned
membrane structures.”.
In 0.2, first paragraph, replace the reference to “EN 1990 — Basis of structural and geotechnical design”
with “EN 1990-1 — Basis of structural and geotechnical design — Part 1: New structures”.
Replace the list of the various parts of EN 1993 with:
“EN 1993-1-1, Eurocode 3 — Design of Steel Structures — Part 1-1: General rules and rules for buildings;
EN 1993-1-2, Eurocode 3 — Design of Steel Structures — Part 1-2: Structural fire design;
EN 1993-1-3, Eurocode 3 — Design of Steel Structures — Part 1-3: Cold-formed members and sheeting;
NOTE Cold-formed hollow sections supplied according to EN 10219 (all parts) are covered in EN 1993-1-1.
EN 1993-1-4, Eurocode 3 — Design of Steel Structures — Part 1-4: Stainless steel structures;
EN 1993-1-5, Eurocode 3 — Design of Steel Structures — Part 1-5: Plated structural elements;
EN 1993-1-6, Eurocode 3 — Design of Steel Structures — Part 1-6: Strength and stability of shell structures;
EN 1993-1-7, Eurocode 3 — Design of Steel Structures — Part 1-7: Plate assemblies with elements under
transverse loads;
EN 1993-1-8, Eurocode 3 — Design of Steel Structures — Part 1-8: Joints;
EN 1993-1-9, Eurocode 3 — Design of Steel Structures — Part 1-9: Fatigue;
EN 1993-1-10, Eurocode 3 — Design of Steel Structures — Part 1-10: Material toughness and through-
thickness properties;
EN 1993-1-11, Eurocode 3 — Design of Steel Structures — Part 1-11: Tension components;
EN 1993-1-12, Eurocode 3 — Design of Steel Structures — Part 1-12: Additional rules for steel grades up to
S960;
EN 1993-1-13, Eurocode 3 — Design of Steel Structures — Part 1-13: Beams with large web openings;
EN 1993-1-14, Eurocode 3 — Design of Steel Structures — Part 1-14: Design assisted by finite element
analysis;
EN 1993-2, Eurocode 3 — Design of Steel Structures — Part 2: Bridges;
EN 1993-3, Eurocode 3 — Design of Steel Structures — Part 3: Towers, masts and chimneys;
EN 1993-4-1, Eurocode 3 — Design of Steel Structures — Part 4-1: Silos;
EN 1993-4-2, Eurocode 3 — Design of Steel Structures — Part 4-2: Tanks;
EN 1993-5, Eurocode 3 — Design of Steel Structures — Part 5: Piling;
EN 1993-6, Eurocode 3 — Design of Steel Structures — Part 6: Crane supporting structures;
EN 1993-7, Eurocode 3 — Design of Steel Structures — Part 7: Sandwich panels (under preparation).”.
2 Modification to Clause 1, "Scope"
In 1.1, paragraph (1), delete the NOTE and respective footnote.
3 Modifications to Clause 2, "Normative references"
Replace “EN 1990, Eurocode — Basis of structural and geotechnical design” with:
“EN 1990-1, Eurocode — Basis of structural and geotechnical design — Part 1: New structures”
and update the reference throughout the document, replacing “EN 1990” with “EN 1990-1”, except in 0.1.
4 Modifications to Clause 3, "Terms, definitions and symbols"
In 3.2, under sub-heading “Clause 5”, replace the symbol "p ” with "p ” and move after the symbol "p ”, so
1,0 1,o 1,i
that symbols are listed in alphabetical order.
Under the sub-heading “Annex A”, in the definition of symbol “V ”, delete the word “stiffened”.
wp,add,Rd
Under the sub-heading “Annex A”, in the definition of symbol “d ”, add “or to the centre of compression in
s
the case of a stiffener in the tension zone only” after the word “stiffeners”.
Under the sub-heading “Annex A”, in the definition of symbol “h ”, replace “inner” with “clear”.
wc
Under the sub-heading “Annex D”, in the definition of symbol “C ”, replace “coefficient of friction” with
f,d
“design value of friction coefficient”.
5 Modifications to Clause 4, “Basis of design”
In 4.3.1, NOTE 2, replace “EN 1990:2023” with “EN 1990-1:2023+A1:2026”.
In 4.6, NOTE, replace “CEN/TR 1993-1-103” with “CEN/TR 1993-1-102” and keep footnote.
6 Modifications to Clause 5, "Connections using bolts, rivets or pins"
In 5.4.4, replace Figure 5.1 with the following:
“
a) connection of angle member and lug angle b) connection of channel and lug angles to the
to the supporting part supporting part
”.
In 5.7.1, in Table 5.4:
 in the 4th row (under ‘Category B’), 1st sentence, replace “criteria at ultimate” with “criterion at
ultimate”.
 in the 10th row (under ‘Category E’), 1st sentence, replace “criteria at ultimate” with “criterion at
ultimate”.
In 5.7.3, replace Figure 5.2 and the figure title with the following new figure and key:
“
Key
1 load distribution
2 bending moment diagram
Figure 5.2 — Load distribution and bending moment diagram on the pin for a symmetrical pin
connection with three connecting parts”.
In 5.8, in Table 5.8:
 in the 2nd row (in the header), last column, replace “made from steels” with “made of steels”.
th
 in the 8th and 11 rows, in the last column, replace “14t ” with “14t”.
min
 in the 9th row, 1st column, replace "p ” with "p ”.
1,0 1,o
In Figure 5.3:
 replace Figure b) with the following:
“
”.
 replace Figure d) with the following (which replaces "p ” with "p ”):
1,0 1,o
“
”.
 in the definition of key item 1, replace “(subscript “0”)” with “(subscript “o”)”.
In 5.9.1, paragraph (3):
nd
 in the 2 sentence, replace “obtained” with “derived”;
 align the text in Formula (5.6) to the left (untagged);
 add the following NOTE after Formula (5.6):
“NOTE Coefficient αb,red represents the non-dimensional average bearing stress at a given non-dimensional bolt
hole elongation and is determined from Formula (A.51).”.
In 5.9.2, paragraph (2), replace Figure 5.8 with the following:
“
”.
In 5.9.3, paragraph (3), replace Figure 5.9 b) with the following:
“
”.
In 5.9.4, paragraph (1), replace Figure 5.10 with the following:
“
”.
In 5.9.4, paragraph (2), replace Figure 5.11 with the following new figure and key:
“
Key
1 clamping length
Figure 5.11 — Limiting effective length for long injection bolts (case for β = 1)”.
In 5.14, paragraph (3), replace Figure 5.13 with the following:
“
”.
7 Modifications to Clause 6, "Welded connections"
In 6.3.2.1, paragraph (2), replace Figure 6.1 with the following new figure and key:
“
Key
1 weld considered
2 angle between fusion faces
Figure 6.1 — Angle between attached plates”.
In 6.3.3, paragraphs (1) and (2), delete the word “normal”.
In 6.3.6, in Figure 6.3, replace the definition for “a” in the key with “throat thickness of weld (smallest cross-
section of weld)”.
In 6.5.3.2, paragraph (3), replace Figure 6.7 with the following:
“
”.
In 6.9, paragraph (4), delete “:” after the word “to” and move the two list items to the 3rd line (untagged).
Replace “but not more” with “but need not be more” so the paragraph (4) will read:
“(4) Where rupture of the weld is to be avoided for ductility purposes, the welds should have sufficient
strength not to rupture before yielding in the adjacent parent metal in order to comply with (3). The
welds should be designed to have a resistance equal to 1,1 f /f times the design resistance of the weakest
y u
of the connected parts, but need not be more than the design resistance of the weakest of the connected
parts.”.
In 6.9, paragraph (6), replace Figure 6.10 with the following:
“
”.
In 6.10, paragraph (1), replace Figure 6.11 with the following:
“
”.
In 6.12, paragraph (3), in Figure 6.12, add the following figure key:
“Key
e distance from the effective line of force to the centre of gravity of the weld seam surface”.

In 6.13, replace the title of subclause 6.13 with “Angles connected by one leg and other eccentrically
connected members”.
In 6.13, paragraph (1), 1st line, add “and other eccentrically connected members” after the word “leg”.
In 6.13, paragraph (3), replace Figure 6.13 with the following new figure and key:
“
Key
1 centroid of connected section
e eccentricity that can be ignored
e’ eccentricity that cannot be ignored
Figure 6.13 — Examples of eccentricities”.
8 Modifications to Clause 7, "Structural analysis"
In 7.2.3, in Figure 7.6, replace figures a) and b) with the following (replacing the dash-double-dot lines with
a dashed line):
“
”.
In 7.2.3, replace Figure 7.7 with the following (replacing the dash-double-dot lines with a dashed line):
“
”.
9 Modifications to Clause 8, "Structural joints connecting H or I sections"
In 8.1, paragraph (2), in Table 8.1:
 in the 9th row, first column, after “Beam or column web in tension”, add “(index i = b for the beam, or
i = c for the column, as appropriate)”;
 in the 9th row, 2nd column, replace “t,wb” with “t,wi”;
rd
 in the 14th row, 3 column, replace the figure for “Bearing at bolt holes” with the following:
“
”.
rd
 in the 18th row, 3 column, replace the figure for “Fasteners between steel and concrete in tension”
with the following:
“
”.
In 8.2, in the NOTE to paragraph (2), 2nd line, delete “and transverse column web stiffeners”.
Replace Figure 8.2 a) with the following:
“
”.
Replace Figure 8.2 b) with the following:
“
”.
Replace Figure 8.2 c) with the following:
“
”.
In 8.3.4, paragraph (1), replace Figure 8.3 with the following (replacing the top left figure):
“
”.
In 8.3.4, paragraph (2), 1st line, delete the word ”may”.
In 8.3.4, paragraph (3), 1st line, replace the word “may” with “do”.
In 8.3.4, paragraph (5), in Table 8.2 delete “may” in the first header row.
In 8.4.1, paragraph (1), in the list item, add “, including grout,” after the word ”concrete”.
10 Modifications to Clause 9, "Hollow section joints"
In 9.3, paragraph (6), in the title of Figure 9.3 replace “λ ≥ 1, 0” with “λ = 1,0”.
ov ov
In 9.4.1, paragraph (2):
 in l
...