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EN 1993-4-2:2026

Eurocode 3 - Design of steel structures - Part 4-2: Tanks

Edition date: 2026-03-18
In Force
Available languages: English
Summary: 1.1 Scope of EN 1993-4-2 (1) EN 1993 4 2 provides rules for structural design of vertical cylindrical, conical and pedestal above-ground steel tanks for the storage of liquids and refrigerated liquefied gas products. (2) This document is applicable to the design for resistance of cylindrical walls and flat bottoms constructed using unstiffened plates. The design of conical and dome roofs as shell structures (unsupported) or as supported on a structural framework (supported) are also covered. (3) This document is only applicable to the requirements for resistance and structural stability of steel tanks. (4) Further guidance on design aspects other than the structural design can be obtained from EN 14015 or the EN 14620 series, as applicable. (5) This document only covers steel tank structures in Tank Groups 1, 2 and 3, as defined in this document. NOTE Tank Group 4 is not defined in this document (see 3.1.40). (6) This document is applicable to tanks within the following dimensional limits (see EN 1991-4): - tank aspect ratio hS/d < 10 - tank total height hS < 70 m - tank diameter d < 100 m (7) This document includes suitable rules for the design of tanks intended to store solids suspended in a liquid, where the appropriate global density of the mixture is used. NOTE Tanks used for the separation of mineral particles of different density fall into this category. (8) This document does not apply to the following: a) tanks with gross capacity less than 5 m3 (5 000 l); b) dished-end tanks that have a diameter less than 5 m; c) tanks with characteristic internal pressures above the liquid surface greater than 50 kPa (500 mbar) (see pressure equipment directive); d) design metal temperatures outside the ranges defined in Clause 5; e) tanks of rectangular and other non-circular planforms; f) tanks exposed to fire; g) floating roofs and floating covers; h) ancillary structures such as stairways, platforms, nozzles, piping and access doors. (9) This document does not cover: a) the special requirements for seismic design of tanks; b) the design of a supporting structure; c) the design of ancillary structures such as stairways, platforms, pipe racks and ladders; d) the design of an aluminium roof structure on a steel tank; e) reinforced concrete foundations for steel tanks; f) the design of a conical hopper; g) the design of a transition junction between the base of a cylindrical shell wall and a conical hopper; h) the design of a supporting ring girder in an elevated tank. 1.2 Assumptions (1) Unless specifically stated, EN 1990-1, the EN 1991 series and the EN 1993-1 series apply. (2) The design methods given in this document apply 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 the EN 1993 series, or in the relevant material standards, see Clause 5. NOTE Further guidance on execution and material choice can be obtained from the documents EN 14015 or EN 14620 2, as applicable. (3) This document applies to axisymmetric structures, but includes the effects of unsymmetrical actions (e.g. wind), and unsymmetrically supported tanks (e.g. on discrete supports). (4) This document is intended to be used in conjunction with EN 1990-1, with EN 1991-4, with the other Parts of EN 1991, with EN 1993-1-6 and EN 1993-4-1, with the other Parts of EN 1993, with EN 1992 and with the other Parts of EN 1994 to EN 1999 relevant to the design of tanks. Matters that are already covered in those documents are not repeated. (5) Numerical values for partial factors and other reliability parameters are recommended as basic values that provide an acceptable level of reliability. They have been selected assuming that an appropriate level of workmanship and quality management applies.

1.1 Domaine d'application de l'EN 1993-4-2 (1) L'EN 1993-4-2 fournit des règles pour le calcul des structures de réservoirs en acier verticaux cylindriques, coniques et érigées sur structure porteuse au-dessus du sol, destinées au stockage de produits liquides et de produits gazeux liquéfiés réfrigérés. (2) Le présent document est applicable au calcul de résistance des parois cylindriques et des fonds plats construits à l'aide de tôles non raidies. Le calcul des toits coniques ou en dôme en structure en coque (sans structure porteuse) ou soutenue sur une charpente (avec structure porteuse) est également couvert. (3) Le présent document est uniquement applicable aux exigences relatives à la résistance et à la stabilité structurelle des réservoirs en acier. (4) Des indications supplémentaires sur les aspects de conception autres que le calcul structural peuvent être obtenues dans la norme EN 14015 ou la série de normes EN 14620, selon le cas. (5) Le présent document couvre uniquement des structures des réservoirs en acier des groupes de réservoir 1, 2 et 3, définis dans le présent document. NOTE Le groupe de réservoir 4 n'est pas défini dans le présent document (voir 3.1.41). (6) Le présent document est applicable aux réservoirs dont les dimensions sont comprises dans les limites suivantes (voir EN 1991-4) : - Rapport de forme du réservoir hS/d < 10 ; - Hauteur totale du réservoir hS < 70 m ; - Diamètre du réservoir d < 100 m. (7) Le présent document comprend des règles appropriées pour le calcul des réservoirs destinés à stocker des matières solides en suspension dans un liquide, lorsque la masse volumique globale appropriée du mélange est utilisée. NOTE Les réservoirs utilisés pour la séparation de particules minérales de masses volumiques différentes entrent dans cette catégorie. (8) Le présent document ne s'applique pas aux cas suivants : a) réservoirs d'une capacité brute inférieure à 5 m3 (5 000 l) ; b) réservoirs à fond bombé d'un diamètre inférieur à 5 m ; c) réservoirs avec des pressions internes caractéristiques au-dessus de la surface du liquide supérieures à 50 kPa (500 mbar) (voir la Directive sur les équipements sous pression) ; d) températures de calcul du métal situées en dehors des plages définies à l'Article 5 ; e) réservoirs de forme rectangulaire et toute autre forme en plan non circulaire ; f) réservoirs exposés au feu ; g) toits flottants et les couvertures flottantes ; h) structures auxiliaires telles que escaliers, plateformes, raccords, tuyauteries et portes d'accès. (9) Le présent document ne traite pas les sujets suivants : a) les exigences spéciales pour le calcul sismique des réservoirs ; b) le calcul d'une structure porteuse ; c) le calcul de structures auxiliaires telles que escaliers, plateformes, râteliers à tuyaux et échelles ; d) le calcul d'une structure de toit en aluminium sur un réservoir en acier ; e) les fondations en béton armé pour les réservoirs en acier ; f) le calcul d'une trémie conique ; g) le calcul d'une zone de transition entre la base d'une paroi en coque cylindrique et une trémie conique ; h) le calcul d'une poutre annulaire de support dans un réservoir surélevé. 1.2 Hypothèses (1) Sauf indication contraire, l'EN 1990, la série EN 1991 et la série EN 1993-1 s'appliquent. (2) Les méthodes de calcul données dans le présent document s'appliquent 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 pertinentes de la série de normes EN 1993 ou dans les spécifications de matériaux appropriées, voir l’Article 5. NOTE Des recommandations complémentaires sur l’exécution et le choix des matériaux peuvent être obtenues dans les documents EN 14015 ou EN 14650-2, selon le cas. ...

1.1 Anwendungsbereich von EN 1993-4-2 (1) EN 1993-4-2 enthält Regeln für die Tragwerksbemessung von vertikalen zylindrischen, konischen und auf der Unterkonstruktion stehenden oberirdischen Tankbauwerken aus Stahl für die Lagerung von Flüssigkeiten und tiefkalt verflüssigten Gasen. (2) Dieses Dokument ist anwendbar für die Bemessung hinsichtlich des Widerstands von zylindrischen Wänden und Flachböden, die mithilfe unausgesteifter Bleche hergestellt sind. Die Bemessung von Kegel- und Kugeldächern als Schalentragwerke (ungestützt) oder als auf einem Rahmentragwerk gelagert (gestützt) ist ebenfalls abgedeckt. (3) Dieses Dokument behandelt nur die Anforderungen an Widerstand und Standsicherheit von Tankbauwerken aus Stahl. (4) Weitere Hilfestellungen zu anderen Bemessungsaspekten als der Tragwerksplanung können EN 14015 oder der Normenreihe EN 14620 entnommen werden, sofern anwendbar. (5) Dieses Dokument behandelt ausschließlich Tanktragwerke aus Stahl der Tankgruppen 1, 2 und 3, wie in diesem Dokument festgelegt. ANMERKUNG Tankgruppe 4 ist in diesem Dokument nicht festgelegt (siehe 3.1.41). (6) Dieses Dokument ist für Tanks mit den folgenden Grenzmaßen anwendbar (siehe EN 1991-4): - Seitenverhältnis des Tanks hS/d < 10 - Gesamthöhe des Tanks hS < 70 m - Durchmesser des Tanks d < 100 m (7) Dieses Dokument enthält geeignete Regeln für die Bemessung von Tanks, die für die Lagerung von in einer Flüssigkeit gelösten Feststoffen vorgesehen sind, wozu die entsprechende globale Dichte des Gemisches verwendet wird. ANMERKUNG Tanks, die für die Trennung von mineralischen Partikeln unterschiedlicher Dichte verwendet werden, fallen in diese Kategorie. (8) Dieses Dokument gilt nicht für Folgendes: a) Tankbauwerke mit einem Brutto-Fassungsvermögen von weniger als 5 m3 (5 000 l); b) Tankbauwerke mit gewölbtem Boden und einem Durchmesser kleiner als 5 m; c) Tankbauwerke mit einem charakteristischen Innendruck über dem Flüssigkeitsspiegel von mehr als 50 kPa (500 mbar) (siehe Druckgeräterichtlinie); d) Auslegungswandtemperaturen außerhalb des in Abschnitt 5 festgelegten Bereiches; e) Tankbauwerke mit rechteckigen und anderen nicht kreisrunden Grundrissen; f) Tankbauwerke, die Feuer ausgesetzt sind; g) Schwimmdächer und Schwimmdecken; h) Anbauten wie Treppen, Arbeitsbühnen, Stutzen, Rohrleitungen und Zugangstüren. (9) Dieses Dokument behandelt nicht: a) die besonderen Anforderungen für die Bemessung von Tankbauwerken im Erdbebenfall; b) die Bemessung einer Unterstützungskonstruktion; c) die Bemessung von Anbauten wie Treppen, Arbeitsbühnen, Rohrbrücken und Steigleitern; d) die Bemessung einer Dachkonstruktion aus Aluminium für ein Tankbauwerk aus Stahl; e) Stahlbetonfundamente für Tankbauwerke aus Stahl; f) die Bemessung eines konischen Trichters; g) die Bemessung eines Übergangs zwischen dem Fuß einer zylindrischen Schalenwand und einem konischen Trichter; h) die Bemessung eines unterstützenden Ringträgers in einem aufgeständerten Tankbauwerk. 1.2 Voraussetzungen (1) Sofern nicht ausdrücklich etwas anderes angegeben ist, gelten EN 1990, Normenreihe EN 1991 und Normenreihe EN 1993-1. (2) Die in diesem Dokument angegebenen Bemessungsverfahren sind anwendbar, wenn: - die Qualität der Ausführung den Festlegungen von EN 1090-2 entspricht; und - die verwendeten Baustoffe und -produkte den Festlegungen der zutreffenden Teile der Normenreihe EN 1993 oder den zutreffenden Werkstoffnormen entsprechen, siehe Abschnitt 5. ANMERKUNG Weitere Hilfestellungen bezüglich der Ausführung und Wahl der Werkstoffe können den Dokumenten EN 14015 oder EN 14620-2 entnommen werden, sofern zutreffend. (3) Dieses Dokument gilt für rotationssymmetrische Tragwerke, sie umfasst aber auch die Auswirkungen von unsymmetrischen Einwirkungen (z. B. Wind), und unsymmetrisch gelagerte Tankbauwerke (z. B. auf diskreten Auflagern). ...

ICS: 23.020.10-Stationary containers and tanks, 91.080.13-Steel structures, 91.010.30-Technical aspects
CTN: CEN/TC 250 - 6231

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