EN 1991-1-6:2026/prA1
(Amendment)Eurocode 1 - Actions on structures - Part 1-6: Actions during execution
- Abstract
1.1 Scope of prEN 1991-1-6
(1) prEN 1991-1-6 provides guidance and general rules on the determination of actions relevant for the design of buildings and civil engineering works, including geotechnical structures, for their execution stage.
NOTE Actions for design during execution include those that only arise from execution activities and act during execution, termed construction actions (for example personnel and hand tools, auxiliary structures, equipment and elements used during execution), and others that are present during the service life of the completed structure (for example self-weight, wind, etc.) but which can act differently and/or have different values during execution.
(2) prEN 1991-1-6 provides guidance and general rules for the determination of actions for the design of auxiliary structures, elements and equipment used during execution in case they are designed to the Eurocodes and not to other European Standards.
NOTE Other European Standards (e.g. EN 12810, EN 12811, EN 12812) provide specific rules for certain types of auxiliary structures, equipment and elements used during execution.
(3) prEN 1991-1-6 gives rules for buildings and bridges during execution to supplement the provisions in EN 1990.
NOTE For combination rules for execution, see EN 1990.
1.2 Assumptions
(1) The general assumptions given in EN 1990 apply.
(2) The application of this document follows the limit state principle and is based on the partial factor method, unless explicitly prescribed differently.
(3) The verification of buildings and civil engineering structures in transient design situations is undertaken in accordance with the Eurocodes, accounting for the interaction with any auxiliary structures, elements and/or equipment.
(4) When using European product standards covering auxiliary structures, equipment and elements used during execution, it is assumed that the design basis, design requirements and, if provided, the safety and operational design limits specified in these product standards are taken into account.
(5) Adequate planning, documentation, communication, control and supervision are provided during execution, involving all relevant parties.
NOTE Execution of a structure can involve interaction between several parties from diverse engineering fields, responsible for the design, fabrication, transportation and execution of different subsystems used during the execution of a structure.
- Status
- Not Published
- Publication Date
- 24-Oct-2027
- Technical Committee
- CEN/TC 250 - Structural Eurocodes
- Current Stage
- 4020 - Submission to enquiry - Enquiry
- Start Date
- 23-Jul-2026
- Due Date
- 30-Nov-2026
- Completion Date
- 23-Jul-2026
EN 1991-1-6:2026/prA1 is a CEN draft amendment to Eurocode 1, Part 1-6, on actions during execution. It updates the rules used to determine actions for the design of buildings, civil engineering works and geotechnical structures during the execution stage, including related auxiliary structures, elements and equipment. This draft amendment is submitted for enquiry and, if approved, will modify EN 1991-1-6:2026.
What does EN 1991-1-6:2026/prA1 specify?
EN 1991-1-6:2026/prA1 updates the Eurocode provisions used to assess actions that matter while a structure is being built or otherwise executed. The underlying Part 1-6 gives guidance and general rules for buildings, bridges and geotechnical structures, and it also covers auxiliary structures, elements and equipment when they are designed to the Eurocodes.
The scope distinguishes between actions that arise only from execution activities and actions that also exist in service life but may have different values during execution. In practice, that means the designer must consider both temporary construction loading and permanent actions as they behave during the works.
| Clause / part | What it covers |
|---|---|
| European foreword | Status of the draft amendment and its relation to EN 1991-1-6:2026 |
| Clause 1 | Changes throughout the whole document |
| Clause 2 | Changes to the Introduction |
| Clause 3 | Changes to the Scope |
| Clause 4 | Changes to Normative References |
| Clause 5 | Changes to Design situations |
| Clause 6 | Changes to Additional considerations on actions during execution |
What are the key requirements of EN 1991-1-6:2026/prA1?
EN 1991-1-6:2026/prA1 keeps the execution-stage design approach aligned with the Eurocodes and updates several references and explanatory notes. The practical effect is that users must read this part together with the updated basis-of-design and the related Eurocode parts named in the amendment.
Execution-stage design follows Eurocode principles
EN 1991-1-6:2026/prA1 states that the general assumptions of EN 1990 apply. It also confirms the limit state principle and the partial factor method unless a different rule is explicitly given. For the reader, this means execution-stage checks are not ad hoc - they follow the normal Eurocode safety format.
Temporary conditions and interactions matter
EN 1991-1-6:2026/prA1 requires verification of buildings and civil engineering structures in transient design situations, while accounting for interaction with auxiliary structures, elements and/or equipment. This matters because temporary works can control safety during execution even if they are not part of the finished structure.
Product standards may set the basis for temporary works
EN 1991-1-6:2026/prA1 assumes that, when European product standards are used for auxiliary structures, equipment and elements used during execution, their design basis, design requirements and any safety or operational design limits are taken into account. In practice, the designer must coordinate the Eurocode design with the relevant product standard.
Planning and supervision are part of execution
EN 1991-1-6:2026/prA1 states that adequate planning, documentation, communication, control and supervision are provided during execution, involving all relevant parties. This is important because execution-stage safety depends on coordination between design, fabrication, transport and site work.
The amendment clarifies specific execution cases
EN 1991-1-6:2026/prA1 updates the note on design situations to highlight instantaneous load effects from methods such as removing temporary supports or assembling and then lifting or sliding full bridge spans into place. That helps designers check load transfer and support conditions that can produce sudden effects.
Who uses EN 1991-1-6:2026/prA1?
EN 1991-1-6:2026/prA1 is used by structural engineers, geotechnical engineers, bridge designers, temporary works designers and contractors working within the Eurocodes. Quality managers and site supervisors use it when they need to check that execution-stage loads, temporary structures and design responsibilities are coordinated and documented.
It is also relevant to teams handling auxiliary structures, elements and equipment used during execution, especially where those items are designed to Eurocodes rather than to other European Standards such as EN 12810, EN 12811 or EN 12812.
What changed in EN 1991-1-6:2026/prA1 from the previous edition?
EN 1991-1-6:2026/prA1 updates EN 1991-1-6:2026 by replacing and aligning several cross-references and by revising explanatory notes. The stated changes include:
- updating references from EN 1990:2023 to EN 1990-1:2023+A1:2026
- replacing undated EN 1990 references with EN 1990-1, with limited exceptions
- updating references to EN 1991-1-1:2025, EN 1992-1-1:2023 and EN 1998-2:2025 to their +prA1:2026 forms
- adding a note pointing to EN 1990-2 in the Introduction
- revising the seismic wording so that EN 1998 covers actions for seismic design or assessment
- changing the Scope text to use “this document”
- updating the reference in Clause 2 to EN 1990-1:2023+A1:2026
- revising the design-situations note on instantaneous load transfer and bridge erection methods
- updating the wind-action reference to EN 1991-1-4:2026, Annex F, Annex G and Annex H
- updating the cross-reference in Clause 7.3(1) to EN 1990-1:2023+A1:2026, 7.1.3
Which standards are used with EN 1991-1-6:2026/prA1?
EN 1991-1-6:2026/prA1 is used with EN 1990-1:2023+A1:2026, which provides the basis of structural and geotechnical design and the combination rules for execution. It also points to EN 1990-2 for additional execution-related provisions.
The amendment names EN 1991-1-4:2026, Annex F, Annex G and Annex H for wind-related effects, and it refers to EN 1998 (all parts) for seismic design or assessment. It also updates cross-references to EN 1991-1-1:2025+prA1:2026, EN 1992-1-1:2023+prA1:2026 and EN 1998-2:2025+prA1:2026. For auxiliary structures and equipment used during execution, it notes EN 12810, EN 12811 and EN 12812 as examples of other European Standards that may apply.
What does the EN 1991-1-6:2026/prA1 document contain?
EN 1991-1-6:2026/prA1 is a clause-by-clause amendment document. Its contents are a European foreword and six modification sections covering the whole document, the Introduction, Scope, Normative References, Design situations, and Additional considerations on actions during execution.
The amendment mainly revises references, clarifies wording, and updates guidance notes rather than introducing a new standalone design method. It also signals editorial corrections that improve the consolidated publication.
Relations
- Effective Date
- 29-Apr-2026
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Frequently Asked Questions
EN 1991-1-6:2026/prA1 is a draft published by the European Committee for Standardization (CEN). Its full title is "Eurocode 1 - Actions on structures - Part 1-6: Actions during execution". This standard covers: 1.1 Scope of prEN 1991-1-6 (1) prEN 1991-1-6 provides guidance and general rules on the determination of actions relevant for the design of buildings and civil engineering works, including geotechnical structures, for their execution stage. NOTE Actions for design during execution include those that only arise from execution activities and act during execution, termed construction actions (for example personnel and hand tools, auxiliary structures, equipment and elements used during execution), and others that are present during the service life of the completed structure (for example self-weight, wind, etc.) but which can act differently and/or have different values during execution. (2) prEN 1991-1-6 provides guidance and general rules for the determination of actions for the design of auxiliary structures, elements and equipment used during execution in case they are designed to the Eurocodes and not to other European Standards. NOTE Other European Standards (e.g. EN 12810, EN 12811, EN 12812) provide specific rules for certain types of auxiliary structures, equipment and elements used during execution. (3) prEN 1991-1-6 gives rules for buildings and bridges during execution to supplement the provisions in EN 1990. NOTE For combination rules for execution, see EN 1990. 1.2 Assumptions (1) The general assumptions given in EN 1990 apply. (2) The application of this document follows the limit state principle and is based on the partial factor method, unless explicitly prescribed differently. (3) The verification of buildings and civil engineering structures in transient design situations is undertaken in accordance with the Eurocodes, accounting for the interaction with any auxiliary structures, elements and/or equipment. (4) When using European product standards covering auxiliary structures, equipment and elements used during execution, it is assumed that the design basis, design requirements and, if provided, the safety and operational design limits specified in these product standards are taken into account. (5) Adequate planning, documentation, communication, control and supervision are provided during execution, involving all relevant parties. NOTE Execution of a structure can involve interaction between several parties from diverse engineering fields, responsible for the design, fabrication, transportation and execution of different subsystems used during the execution of a structure.
1.1 Scope of prEN 1991-1-6 (1) prEN 1991-1-6 provides guidance and general rules on the determination of actions relevant for the design of buildings and civil engineering works, including geotechnical structures, for their execution stage. NOTE Actions for design during execution include those that only arise from execution activities and act during execution, termed construction actions (for example personnel and hand tools, auxiliary structures, equipment and elements used during execution), and others that are present during the service life of the completed structure (for example self-weight, wind, etc.) but which can act differently and/or have different values during execution. (2) prEN 1991-1-6 provides guidance and general rules for the determination of actions for the design of auxiliary structures, elements and equipment used during execution in case they are designed to the Eurocodes and not to other European Standards. NOTE Other European Standards (e.g. EN 12810, EN 12811, EN 12812) provide specific rules for certain types of auxiliary structures, equipment and elements used during execution. (3) prEN 1991-1-6 gives rules for buildings and bridges during execution to supplement the provisions in EN 1990. NOTE For combination rules for execution, see EN 1990. 1.2 Assumptions (1) The general assumptions given in EN 1990 apply. (2) The application of this document follows the limit state principle and is based on the partial factor method, unless explicitly prescribed differently. (3) The verification of buildings and civil engineering structures in transient design situations is undertaken in accordance with the Eurocodes, accounting for the interaction with any auxiliary structures, elements and/or equipment. (4) When using European product standards covering auxiliary structures, equipment and elements used during execution, it is assumed that the design basis, design requirements and, if provided, the safety and operational design limits specified in these product standards are taken into account. (5) Adequate planning, documentation, communication, control and supervision are provided during execution, involving all relevant parties. NOTE Execution of a structure can involve interaction between several parties from diverse engineering fields, responsible for the design, fabrication, transportation and execution of different subsystems used during the execution of a structure.
EN 1991-1-6:2026/prA1 is classified under the following ICS (International Classification for Standards) categories: 91.010.30 - Technical aspects. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 1991-1-6:2026/prA1 has the following relationships with other standards: It is inter standard links to EN 1991-1-6:2026. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 1991-1-6:2026/prA1 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2026
Evrokod 1 - Vplivi na konstrukcije - 1-6. del: Vplivi med gradnjo
Eurocode 1 - Actions on structures - Part 1-6: Actions during execution
Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-6 : Einwirkungen während der
Bauausführung
Eurocode 1 - Actions sur les structures - Partie 1-6 : Actions en cours d'exécution
Ta slovenski standard je istoveten z: EN 1991-1-6:2026/prA1
ICS:
91.010.30 Tehnični vidiki Technical aspects
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
EN 1991-1-6:2026
NORME EUROPÉENNE
EUROPÄISCHE NORM
prA1
July 2026
ICS
English Version
Eurocode 1 - Actions on structures - Part 1-6: Actions
during execution
Eurocode 1 - Actions sur les structures - Partie 1-6 : Eurocode 1 - Einwirkungen auf Tragwerke - Teil 1-6 :
Actions en cours d'exécution Einwirkungen während der Bauausführung
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 1991-1-6:2026. 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 1991-1-6:2026/prA1:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Modifications throughout the whole document . 4
2 Modification to Introduction . 4
3 Modification to 1, "Scope" . 4
4 Modification to 2, "Normative References" . 4
5 Modification to 4, "Design situations" . 4
6 Modification to 7, "Additional considerations on actions during execution" . 5
European foreword
This document (EN 1991-1-6:2026/prA1:2026) has been prepared by
...