Abstract

(1) Part 4-1 of Eurocode 3 provides principles and application rules for the structural design of steel silos of circular or rectangular plan-form, being free standing (on ground) or supported on a structural framework (elevated). (2) The provisions given in this Part supplement modify or supersede the equivalent provisions given in the different parts of EN 1993-1. (3) This part is concerned only with the requirements for resistance and stability of steel silos. For other requirements (such as operational safety, functional performance, fabrication and erection, quality control, details like man-holes, flanges, filling devices, outlet gates and feeders etc.), see the relevant standards. (4) The silo here defined is either an isolated structure or may be one part of a battery of silos. For a silo battery, the term silo is used throughout this standard to refer to a single cell within the battery. (5) Provisions relating to special requirements of seismic design are provided in EN 1998-4, which complements or adapts the provisions of Eurocode 3 specifically for this purpose. (6) The design of supporting structures for the silo are dealt with in EN 1993-1-1. The supporting structure is deemed to consist of all structural elements beneath the bottom flange of the lowest ring of the silo, see Figure 1.1. (7) Foundations in reinforced concrete for steel silos are dealt with in EN 1992 and EN 1997. (8) Numerical values of the specific actions on steel silos to be taken into account in the design are given in EN 1991-4 Actions in Silos and Tanks. (9) This Part 4-1 does not cover: • resistance to fire; • cylindrical silos with internal subdivisions; • internal structures within a single silo; • silos with capacity less than 100 kN (10 tonnes); • cases where special measures are necessary to limit the consequences of accidents. (10) Where this standard applies to circular planform silos, the geometric form is restricted to axisymmetric structures, but the actions on them can be unsymmetrical, and their supports can induce forces in the silo that are not axisymmetrical. (11) The following dimensional limitations apply: Silo aspect ratio (EN 1991-4) hb/dc < 10 (1.1) Silo total height (EN 1991-4) hb < 100 m (1.2) Silo equivalent diameter (EN 1991-4) dc < 60 m (1.3)

Begin

2021-09-20

WI

00250229

Planned document number

DIN EN 1993-4-1

Project number

00518497

Responsible national committee

NA 005-08-16 AA - Design of structures (national mirror committee for CEN/TC 250/SC 3, ISO/TC 167/SC 1)  

Responsible european committee

CEN/TC 250/SC 3/WG 15 - Evolution of EN 1993-4-1 - Silos  

draft standard

Eurocode 3 - Design of steel structures - Part 4-1: Silos; German and English version prEN 1993-4-1:2024
2024-01
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previous edition(s)

Eurocode 3: Design of steel structures - Part 4-1: Silos; German version EN 1993-4-1:2007 + AC:2009 + A1:2017
2017-09

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