SIST EN 1993-4-2:2007/A1:2017

SLOVENSKI STANDARD
SIST EN 1993-4-2:2007/A1:2017
01-september-2017
Evrokod 3: Projektiranje jeklenih konstrukcij - 4-2. del: Rezervoarji
Eurocode 3 - Design of steel structures - Part 4-2: Tanks
Eurocode 3: Bemessung und Konstruktion von Stahlbauten - Teil 4-2: Tankbauwerke
Eurocode 3 - Calcul des structures en acier - Partie 4-2: Réservoirs
Ta slovenski standard je istoveten z: EN 1993-4-2:2007/A1:2017
ICS:
23.020.10 1HSUHPLþQHSRVRGHLQ Stationary containers and
UH]HUYRDUML tanks
91.010.30 7HKQLþQLYLGLNL Technical aspects
91.080.13 Jeklene konstrukcije Steel structures
SIST EN 1993-4-2:2007/A1:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 1993-4-2:2007/A1:2017

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SIST EN 1993-4-2:2007/A1:2017


EN 1993-4-2:2007/A1
EUROPEAN STANDARD

NORME EUROPÉENNE

June 2017
EUROPÄISCHE NORM
ICS 23.020.01; 23.020.10; 91.010.30; 91.080.13
English Version

Eurocode 3 - Design of steel structures - Part 4-2: Tanks
Eurocode 3 - Calcul des structures en acier - Partie 4-2 : Eurocode 3: Bemessung und Konstruktion von
Réservoirs Stahlbauten - Teil 4-2: Tankbauwerke
This amendment A1 modifies the European Standard EN 1993-4-2:2007; it was approved by CEN on 3 March 2017.

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. 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 amendment 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1993-4-2:2007/A1:2017 E
worldwide for CEN national Members.

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SIST EN 1993-4-2:2007/A1:2017
EN 1993-4-2:2007/A1:2017 (E)
Contents Page
European foreword . 3
1 Modification to the Foreword . 4
2 Modifications to 1.1, Scope . 4
3 Modifications to 1.2, Normative references . 5
4 Modifications to 1.5, Terms and definitions . 5
5 Deletion of 1.7.2, Conventions for global tank structure axis system for rectangular tanks . 6
6 Modifications to 1.7.3 (new numbering 1.7.2), Conventions for structural element axes
in both circular and rectangular tanks . 6
7 Modifications to 1.7.4 (new numbering 1.7.3), Conventions for stress resultants for
circular tanks and rectangular tanks . 7
8 Modification to 2.2, Reliability differentiation . 7
9 Modifications to 2.7, Modelling of the tank for determining action effects . 9
10 Deletion of 2.10, Combinations of actions . 9
11 Modification to 3.5.1, General . 9
12 Modification to 3.5.2, Minimum design metal temperature . 10
13 Modifications to 4.1.3, Effects of corrosion . 10
14 Modification to 4.2.2.1, General . 11
15 Deletion of 4.3, Analysis of the box structure of a rectangular tank . 11
16 Modifications to 5.3, Resistance of the tank shell wall . 11
17 Modification to 5.4.6.3, Design of shell man holes and shell nozzles of large size for LS1 . 11
18 Modification to 5.4.7, Anchorage of the tank . 11
19 Deletion of Clause 6, Design of conical hoppers . 12
20 Modification to 7.1.2 (newly numbered as 6.1.2), Roof design . 12
21 Modification to 7.3 (newly numbered as 6.3), Resistance of circular roofs . 12
22 Modification to 7.4.3 (newly numbered as 6.4.3), Roof to shell junction (eaves junction) . 12
23 Deletion of Clause 8, Design of transition junctions at the bottom of the shell and
supporting ring girders . 12
24 Deletion of Clause 9, Design of rectangular and planar-sided tanks . 12
25 Deletion of Clause 10, Requirements on fabrication, execution and erection with relation
to design . 12
26 Modification to Clause 11 (newly numbered as Clause 7), Simplified design . 12
27 Modification to 11.2.1 (newly numbered as 7.2.1), Unstiffened roof shell butt welded or
with double lap weld . 12
28 Modifications to 11.3.2 (newly numbered as 7.3.2), Stiffening rings . 12
29 Modification to A.1, General . 13

2

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SIST EN 1993-4-2:2007/A1:2017
EN 1993-4-2:2007/A1:2017 (E)
European foreword
This document (EN 1993-4-2:2007/A1:2017) has been prepared by Technical Committee CEN/TC 250
“Structural Eurocodes”, the secretariat of which is held by BSI.
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 June 2018, and conflicting national standards shall be withdrawn at
the latest by June 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
3

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SIST EN 1993-4-2:2007/A1:2017
EN 1993-4-2:2007/A1:2017 (E)
1 Modification to the Foreword
nd
In the Foreword, in the section "National Annex for EN 1993-4-2", in the 2 paragraph, replace the whole list
with the following one:
"
– 2.2 (1)
– 2.2 (3)
– 2.9.2.1 (1)P
– 2.9.2.1 (2)P
– 2.9.2.1 (3)P
– 2.9.2.2 (3)P
– 2.9.3 (2)
– 3.3 (3)
– 4.1.4 (3)".
2 Modifications to 1.1, Scope
Replace Paragraph (1) with the following one (including the present Footnote 1)):
"(1) Part 4-2 of Eurocode 3 provides principles and application rules for the structural design of vertical
cylindrical, conical and pedestal above ground steel tanks for the storage of liquid products with the
following characteristics:
3
a) tanks with capacity greater than 100 m (100 000 l);
b) tanks that have significant fabrication or assembly on site;
c) shop-fabricated tanks with conical bottoms, supported on skirts or columns;
d) tanks with characteristic internal pressures above the liquid surface not more negative than −0,1 bar
5)
and not greater than 0,5 bar ;
e) design metal temperatures limited to the ranges:
1) tanks constructed using structural steel grades, −50°C < T < +300°C;
2) tanks constructed using austenitic stainless steels, −165°C < T < +300°C;
3) tanks constructed with special steel grades that have defined yield strengths up to higher
temperatures, −165°C < T < the maximum defined temperature for the grade;
4) tanks susceptible to failure by fatigue, T < 150°C;
f) in cylindrical ground-supported tanks, the maximum design liquid level not higher than the top of the
cylindrical shell.".
Replace Paragraph (8) with the following one:
"(8) This Part 4-2 does not cover:
— tanks of rectangular planform;

5) All pressures are in bar gauge unless otherwise specified.
4

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SIST EN 1993-4-2:2007/A1:2017
EN 1993-4-2:2007/A1:2017 (E)
3
— tanks with capacity below 100 m ;
— tanks exposed to fire (refer to EN 1993-1-2);
— tanks with dished ends and diameter less than 5 m;
— cylindrical tanks with an aspect ratio of height to diameter greater than 3.".
3 Modifications to 1.2, Normative references
Replace "EN 1990" with "EN 1990:2002".
In the list of the parts of EN 1993, replace "Part 1.6:" with "Part 1.6:2007:".
In the list of the parts of EN 1993, replace "Part 1.10:" with "Part 1.10:2005:".
In the list of the parts of EN 1993, replace "Part 4.1:" with "Part 4.1:2007:".
4 Modifications to 1.5, Terms and definitions
In 1.5.1, replace the last sentence with the following one: "In the tank construction industry, this term is also
taken to have the special meaning of the vertical wall of a cylindrical tank, see 1.5.9.".
Delete Entry 1.5.3 and renumber the following numbered entries accordingly.
In 1.5.5 (new numbering 1.5.4), delete in the last sentence: "irrespective of whether the tank is circular or
rectangular in plan".
Replace the content of Entry 1.5.6 (new numbering 1.5.5) with "This term is used to refer to the stress-free
middle surface when a shell is subject to pure bending in any direction.".
In 1.5.8, (new numbering 1.5.7) replace the second sentence with: "In this standard it is assumed to be circular
in plan.".
Replace the content of Entry 1.5.9 (new numbering 1.5.8) with: "The term shell is often used in the tank
industry to refer to the vertical wall of a cylindrical tank. This usage is slightly confusing when compared
with the general definition (see EN 1993-1-6) given in 1.5.1, it is quite widely used, so it is also used in this
standard where appropriate. Where any confusion may arise, the term cylindrical wall is used instead.".
st
In 1.5.13 (new numbering 1.5.12), in the 1 sentence, delete "or flat plate elements".
nd
sentence, delete "or box".
In 1.5.13 (new numbering 1.5.12), in the 2
In 1.5.15 (new numbering 1.5.14), replace: "The shell-roof junction is the junction between the vertical wall
and the roof. It is sometimes referred to as the eaves junction, though this usage is more common for solids
storages." with: "The shell-roof junction, alternatively known as the top angle or eaves junction, is the
junction between the vertical wall and the roof.".
In 1.5.17 (new numbering 1.5.16), in the first sentence, delete "or flat plate" and "or a vertical stiffener on a
box".
In 1.5.18 (new numbering 1.5.17), delete the last sentence: "In a shell of revolution it is circular, but in
rectangular structures is takes the rectangular form of the plan section.".
In 1.5.20 (new numbering 1.5.19), replace the first sentence with: "A ring girder or ring beam is a
circumferential stiffener which has bending stiffness and strength in the plane of the circular section of a
shell and also normal to that plane.".
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SIST EN 1993-4-2:2007/A1:2017
EN 1993-4-2:2007/A1:2017 (E)
In 1.5.20 (new numbering 1.5.19), delete in the sec
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