National foreword

This British Standard is the UK implementation of EN 13084‑2:2026. It supersedes BS EN 13084‑2:2007, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee B/506, Chimneys.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2026.

This European Standard was approved by CEN on 7 September 2026.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a 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 European Standard 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, Czechia, 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.

European foreword

This document (EN 13084‑2:2026) has been prepared by Technical Committee CEN/TC 297 “Free-standing industrial chimneys”, the secretariat of which is held by AFNOR.

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 April 2027and conflicting national standards shall be withdrawn at the latest by April 2027.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 13084‑2:2007.

EN 13084‑2:2026 includes the following significant technical changes with respect to EN 13084‑2:2007:

the cross-references were adapted,
requirements and scope have been revised,
textual formulations and editorial changes for clarification were made, and
Formula (9) was corrected.

This document is part 2 of a series of standards as listed below:

EN 13084‑1, Free-standing chimneys — Part 1: General requirements
EN 13084‑2, Free-standing chimneys — Part 2: Concrete chimneys
EN 13084‑4, Free-standing chimneys — Part 4: Brick liners — Design and execution
EN 13084‑5, Free-standing chimneys — Part 5: Material for brick liners — Product specifications
EN 13084‑6, Free-standing chimneys — Part 6: Steel liners — Design and execution
EN 13084‑7, Free-standing chimneys — Part 7: Product specifications of cylindrical steel fabrications for use in single wall steel chimneys and steel liners
EN 13084‑8, Free-standing chimneys — Part 8: Design and execution of mast construction with satellite components
EN 13084‑9, Free-standing chimneys — Part 9: Lifetime management — Monitoring, inspection, maintenance, remedial and reporting; Operations and actions required

Additionally applies:

EN 1993‑3‑2, Eurocode 3: Design of steel structures — Part 3-2: Towers, masts and chimneys — Chimneys

This document has been prepared under a standardization request addressed to CEN by the European Commission. The Standing Committee of the EFTA States subsequently approves these requests for its Member States.

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

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, 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 the United Kingdom.

1 Scope

This document specifies particular requirements and performance criteria for the design and construction of cast-in situ concrete chimneys as well as prefabricated concrete chimneys. It identifies requirements to ensure the mechanical resistance and stability of concrete chimneys in accordance with the general requirements given in EN 13084‑1:2025.

As for chimneys attached to buildings, the criteria given in Clause 1 of EN 13084‑1:2025 apply.

Unless otherwise stated in the following clauses, the basic standard for the design of concrete structures, EN 1992‑1‑1:2023, applies.

2 Normative references

3 Terms and definitions

4 Materials

4.1 Concrete

4.2 Mortar for bedding of prefabricated elements

4.3 Reinforcing steel

5 Material properties

6 Structural design

6.1 Actions

6.2 Effect of actions

6.3 Verification

7 Detailing provisions

7.1 Cast-in situ chimneys

7.2 Prefabricated concrete chimneys

8 Workmanship

8.1 General

8.2 Bedding joints

8.3 Reinforcement ducts

9 Quality control

9.1 Cast-in situ chimneys

9.2 Prefabricated chimneys

Bibliography