Eurokoder

1.1 Scope of EN 1993-1-10 (1) EN 1993-1-10 specifies rules for the selection of steel grades and qualities related to fracture toughness to avoid brittle fracture. NOTE Steel quality is also known as (Charpy) subgrade. (2) EN 1993-1-10 specifies rules to specify through thickness properties for welded elements to reduce the risk of lamellar tearing. (3) EN 1993-1-10 specifies additional toughness requirements for specific cases to ensure upper shelf toughness in relation to design ultimate resistance in tension and seismic design. (4) EN 1993-1-10 specifies rules for structural steels as listed in EN 1993-1-1. This document applies to steel grades S235 to S700. (5) EN 1993-1-10 specifies rules that apply to the selection of parent material only. (6) EN 1993-1-10 specifies rules that apply to steel materials covered by EN 1993-1-1:2022, 5.1(3), provided that each individual piece of steel is tested in accordance with the requirements of EN 1993 1 1:2022, 5.2.1 and EN 1090-2:2018+A1:2024, 5.1. (7) This document does not apply to material salvaged from existing steelwork subjected to fatigue or fire. 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 1993-1-10 are applicable if: - the execution quality is as specified in EN 1090-2 or EN 1090-4, 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 EN 1993-1-9 (1) EN 1993-1-9 gives design methods for the verification of the fatigue design situation of steel structures. NOTE Steel structures consist of members and their joints. Each member and joint can be represented as a constructional detail or as several of the latter. (2) Design methods other than the stress-based methods, such as the notch strain method or fracture mechanics methods, are not covered by EN 1993-1-9. (3) EN 1993-1-9 only applies to structures made of all grades of structural steels and products within the scope of EN 1993-1 (all parts), in accordance with the provisions noted in the detail category tables or annexes. (4) EN 1993-1-9 only applies to structures where execution conforms to EN 1090-2. NOTE Supplementary execution requirements are indicated in the detail category tables. (5) EN 1993-1-9 applies to structures operating under normal atmospheric conditions and with sufficient corrosion protection and regular maintenance. The effect of seawater corrosion is not covered. (6) EN 1993-1-9 applies to structures with hot dip galvanizing in accordance with the provisions noted in the detail category tables or annexes. (7) Microstructural damage from high temperature (> 150°C) that occurs during the design service life is not covered. (8) EN 1993-1-9 gives guidance of how to consider post-fabrication treatments that are intended to improve the fatigue resistance of constructional details. 1.2 Assumptions (1) Unless specifically stated, EN 1990, EN 1991 (all parts) and EN 1993 1 (all parts) apply. (2) The design methods given in EN 1993-1-9 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 on EN 1993 (all parts), or in the relevant material and product specifications. (3) The design methods of EN 1993-1-9 are generally derived from fatigue tests on constructional details with large scale specimens that include effects of geometrical and structural imperfections from material production and execution (e.g. the effects of tolerances and residual stresses from welding).

1.1 Scope of prEN 1993-1-4 This document provides supplementary rules for the structural design of steel structures that extend and modify the application of EN 1993-1-1, EN 1993-1-3, EN 1993-1-5 and EN 1993-1-8 to austenitic, duplex (austenitic-ferritic) and ferritic stainless steels. NOTE 1 Austenitic-ferritic stainless steels are commonly known as duplex stainless steels. The term duplex stainless steel is used in this document. NOTE 2 Information on the durability of stainless steels is given in Annex A. NOTE 3 The execution of stainless steel structures is covered in EN 1090-2 and EN 1090-4. 1.2 Assumptions Unless specifically stated, EN 1990, EN 1991 (all parts), EN 1993-1-1, EN 1993-1-3, EN 1993-1-5 and EN 1993-1-8 apply. The design methods given in prEN 1993-1-4 are applicable if - the execution quality is as specified in EN 1090-2 and EN 1090-4, and - the construction materials and products used are as specified in EN 1993-1-1, EN 1993-1-3, EN 1993 1-5 and EN 1993-1-8, or in the relevant material and product specifications.

1.1 Scope of FprEN 1992-1-1 (1) This document gives the general basis for the design of structures in plain, reinforced and prestressed concrete made with normal weight, lightweight and heavyweight aggregates. It gives specific rules for buildings, bridges and civil engineering structures, including temporary structures; additional requirements specific to bridges are given in Annex K. The rules are valid under temperature conditions between −40 °C and +100 °C generally. This document complies with the principles and requirements for the safety, serviceability, durability and robustness of structures, the basis of their design and verification that are given in EN 1990. (2) This document is only concerned with the requirements for resistance, serviceability, durability, robustness and fire resistance of concrete structures. Other requirements, e.g. concerning thermal or sound insulation, are not considered. (3) This document does not cover: - resistance to fire (see EN 1992 1 2); - fastenings in concrete (see EN 1992 4); - seismic design (see EN 1998 (all parts)); - particular aspects of special types of civil engineering works (such as dams, pressure vessels); - structures made with no-fines concrete, aerated or cellular concrete, lightweight aggregate concrete with open structure components; - structures containing steel sections considered in design (see EN 1994 (all parts)) for composite steel and concrete structures; - structural parts made of concrete with a smallest value of the upper sieve aggregate size Dlower < 8 mm (or if known Dmax < 8 mm) unless otherwise stated in this Eurocode. 1.2 Assumptions (1) The assumptions of EN 1990 apply to FprEN 1992-1-1. (2) It is assumed that the requirements for execution and workmanship given in EN 13670 are complied with.

1.1 Scope of prEN 1992 1 2 (1) This document deals with the design of concrete structures for the accidental situation of fire exposure and is intended to be used in conjunction with prEN 1992 1 1 and EN 1991 1 2. This document identifies differences from, or supplements to, normal temperature design. (2) This document applies to concrete structures required to fulfil a loadbearing function, separating function or both. (3) This document gives principles and application rules for the design of structures for specified requirements in respect of the aforementioned functions and the levels of performance. (4) This document applies to structures, or parts of structures, that are within the scope of prEN 1992 1 1 and are designed accordingly. (5) The methods given in this document are applicable to normal weight concrete up to strength class C100/115 and lightweight concrete up to strength class LC50/60. 1.2 Assumptions (1) In addition to the general assumptions of prEN 1990 the following assumptions apply: - the choice of the relevant design fire scenario is made by appropriate qualified and experienced personnel or is given by the relevant national regulation; - any fire protection measure taken into account in the design will be adequately maintained.

1.1 Scope of EN 1991 1 2

(1) The methods given in this Eurocode are applicable to buildings and civil engineering works, with a fire load related to the building and its occupancy.

(2) EN 1991 1 2 deals with thermal and mechanical actions on structures exposed to fire. It is intended to be used in conjunction with the fire design Parts of EN 1992 to EN 1996 and EN 1999 which give rules for designing structures for fire resistance.

(3) EN 1991 1 2 contains thermal actions either nominal or physically based. More data and models for physically based thermal actions are given in annexes.

(4) EN 1991 1 2 does not cover the assessment of the damage of a structure after a fire.

(5) EN 1991 1 2 does not cover supplementary requirements concerning, for example:

- the possible installation and maintenance of sprinkler systems;

- conditions on occupancy of building or fire compartment;

- the use of approved insulation and coating materials, including their maintenance.

1.2 Assumptions

(1) In addition to the general assumptions of EN 1990 the following assumptions apply:

- the choice of the relevant design fire scenario is made by appropriate qualified and experienced personnel, or is given by the relevant national regulation;

- any fire protection measure taken into account in the design will be adequately maintained. 

(1) This document defines imposed loads (models and representative values) associated with road traffic, pedestrian actions and rail traffic which include, when relevant, dynamic effects and centrifugal, braking and acceleration actions and actions for accidental design situations.

(2) The imposed loads defined in this document are applicable for the design of new bridges, including decks, piers, abutments and associated walls (e.g. upstand walls, wing walls and flank walls) and their foundations. These imposed loads can also be used for the design of other structures subject to traffic loads (e.g. road tunnel floor slabs, noise barriers and their foundations). Where appropriate, the loads can also be considered as a basis for assessment or modification of existing structures in combination with complementary conditions if necessary.

(3) The load models and values given in this document are also applicable for the design of retaining walls adjacent to roads and railway lines and the design of earthworks subject to road or rail traffic actions. This document also provides applicability conditions for specific load models.

(4) This document is intended to be used with EN 1990, the other parts of the EN 1991 series and the EN 1992 series to EN 1999 series for the design of structures. 

1.1 Scope of EN 1997‑1

(1) This document provides general rules for the design and vérification of geotechnical structures.

(2) This document is applicable for the design and vérification of geotechnical structures outside the scope of EN 1997‑3.

NOTE In this case, additional or amended provisions can be necessary.

1.2 Assumptions

1) In addition to the assumptions given in EN 1990, the provisions of EN 1997 (all parts) assume that:

— ground investigations are planned by individuals or organisations with knowledge of potential ground and groundwater conditions;

— ground investigations are executed by individuals with appropriate skills and experience;

— the evaluation of test results and derivation of ground properties from the ground investigation are carried out by individuals with appropriate geotechnical experience and qualifications;

— the data required for design are collected, recorded, and interpreted by appropriately qualifiéd and experienced individuals;

— geotechnical structures are designed and vérifiéd by individuals with appropriate qualifications and experience in geotechnical design;

— adequate continuity and communication exist between the individuals involved in data collection, design, vérification and execution.

(2) This document is intended to be used in conjunction with EN 1990, which establishes principles and requirements for the safety, serviceability, robustness, and durability of structures, including geotechnical structures, and other construction works.

NOTE Additional or amended provisions can be necessary for assessment of existing structures, see EN 1990‑2.

(3) This document is intended to be used in conjunction with EN 1997‑2, which gives provisions for determining ground properties from ground investigations.

(4) This document is intended to be used in conjunction with EN 1997‑3, which gives spécific rules for the design and vérification of certain types of geotechnical structures.

(5) This document is intended to be used in conjunction with other Eurocodes for the design of geotechnical structures, including temporary geotechnical structures.

1.1 Scope of EN 1997-2

(1) This document provides rules for determining ground properties for the design and verification of geotechnical structures.

(2) This document covers requirements and guidance for planning ground investigations, collecting information about ground properties and groundwater conditions, and preparation of the Ground Model.

(3) This document covers requirements and guidance for the selection of field investigation and laboratory test methods to obtain derived values of ground properties.

(4) This document covers requirements and guidance on the presentation of the results of ground investigation, including derived values of ground properties, in the Ground Investigation Report.

1.2 Assumptions

(1) The provisions in EN 1997-2 are based on the assumptions given in EN 1990 and EN 1997-1.

(2) This document is intended to be used in conjunction with EN 1997-1, which provides general rules for design and verification of all geotechnical structures.

(3) This document is intended to be used in conjunction with EN 1997-3, which provides specific rules for design and verification of certain types of geotechnical structures.

(4) This document is intended to be used in conjunction with EN 1998-1-1 which provides the requirements for the ground properties needed to define the seismic action.

(5) This document is intended to be used in conjunction with EN 1998-5 which provides rules for the design of geotechnical structures in seismic regions. 

1.1 Scope of EN 1997-3

(1) This document provides specific rules to be applied in the design and verification of geotechnical structures.

1.2 Assumptions

(1) This document is intended to be used in conjunction with EN 1990, which establishes principles and requirements for the safety, serviceability, robustness, and durability of structures, including geotechnical structures, and other construction works.

NOTE Additional or amended provisions can be necessary for assessment of existing structures, see prEN 1990-2.

(2) This document is intended to be used in conjunction with EN 1997-1, which provides general rules for the design and verification of geotechnical structures.

(3) This document is intended to be used in conjunction with EN 1997-2, which gives provisions for determining ground properties from ground investigations.

(4) This document is intended to be used in conjunction with the other Eurocodes for the design of geotechnical structures, including temporary geotechnical structures. 

1.1 Scope of EN 1998-3

(1) This document is applicable to the assessment and retrofitting of buildings and bridges in seismic regions, namely as given in a) to c):

a) to provide criteria for the assessment of the seismic performance of existing individual buildings and bridges;

b) to describe the procedure to be followed in selecting necessary corrective measures;

c) to set forth criteria for the design of retrofitting measures (i.e. design, structural analysis including intervention measures, final dimensioning of structural parts and their connections to existing structural members).

NOTE 1 For the purposes of this document, retrofitting covers both the seismic upgrading (e.g. strengthening or adding a passive system) of undamaged structures and the repair and possible upgrading of earthquake-damaged structures.

NOTE 2 Only the most common retrofit techniques are covered in this document. This does not exclude the use of other techniques, which can be developed in each country, based on the strengthening principles of this document.

NOTE 3 Annex D gives flowcharts for the application of this document.

(2) Unless specifically stated, EN 1998-1-1 and EN 1998-5 apply.

(3) Reflecting the performance requirements of EN 1998-1-1:2024, 4.1, this document covers the seismic assessment and retrofitting of buildings and bridges made of the more commonly used structural materials: concrete, steel and composite, timber and masonry.

NOTE Annexes B and C contain additional guidance related to the assessment of timber and masonry structures, respectively, and to their retrofitting when necessary.

(4) This document is intended for the assessment of individual structures, to decide on the need for structural intervention and to design the retrofitting measures that may be necessary. It is not intended for the vulnerability assessment of populations or groups of structures in seismic risk evaluations for various purposes (e.g. for determining insurance risk, for setting risk mitigation priorities, etc.).

(5) This document provides (in its material-specific Clauses 8 to 11) criteria for the verification of the more common retrofitting techniques currently in use.

(6) This document gives specific rules for the assessment and retrofitting relevant to existing buildings and bridges of consequence classes CC1, CC2 and CC3, as defined in EN 1990:2023, 4.3.

(7) Although the provisions of this document are applicable to all common categories of buildings and bridges, the seismic assessment and retrofitting of monuments and heritage structures often requires different types of provisions and approaches, depending on the nature of the monuments and heritage structures. 

1.1 Scope of EN 1998-4

(1) This document is applicable to the seismic design of on-ground and elevated silos, on-ground, elevated and underground tanks, above-ground and buried pipeline systems, towers, masts and chimneys and ancillary elements attached to these structures or in industrial facilities.

(2) Unless specifically stated, EN 1998-1-1 and EN 1998-5 apply.

(3) EN 1998-4 is applicable in complement to the other relevant Eurocodes.

NOTE This document contains only those provisions that, in addition to the provisions of the other relevant Eurocodes, are used for the design of new structures, as listed in (1), in seismic regions. EN 1998-4 complements in this respect the other Eurocodes.

1.2 Assumptions

(1) The assumptions of EN 1998-1-1 apply to this document.

(2) It is assumed that the changes in a) and b) will not take place during the construction phase or during the subsequent life span for all structures covered by EN 1998-4, unless proper justification and verification is provided:

a) substantial changes in the structural systems, supporting structures or attached ancillary elements listed in 1.1(1);

b) substantial changes of masses or mass distribution. This includes, in particular, changes in production, such as specific changes of filling loads, filling states and ancillary elements.