Publishing and copyright information

The BSI copyright notice displayed in this document indicates when the document was last issued.

© The British Standards Institution 2023

Published by BSI Standards Limited 2023

ISBN 978 0 539 16109 0

ICS 93.080.40

The following BSI references relate to the work on this document:
Committee reference B/509/50
Draft for comment 22/30461774 DC

Foreword

Publishing information

This Published Document is published by BSI Standards Limited, under licence from The British Standards Institution, and came into effect on 31 December 2023. It was prepared by Subcommittee B/509/50, Street lighting columns, under the authority of Technical Committee B/509, Road equipment. A list of organizations represented on these committees can be obtained on request to the committee manager.

Supersession

PD 6547:2023 supersedes PD 6547:2004+A1:2009, which is withdrawn.

Relationship with other publications

This Published Document gives non-contradictory, complementary information for use in the UK with BS EN 40‑3‑1 and BS EN 40‑3‑3.

Information about this document

This is a full revision of the document, and introduces the following principal changes:

corrections to R_wf table in Annex B;
addition of a standard flange plate design method;
addition of a fatigue assessment method for steel products;
guidance on future proofing lighting columns for Smart Cities and Internet of Things (IoT);
guidance on typical weight and wind areas for different lighting column attachments;
considerations when retrofitting attachments to lighting columns;
considerations when retrofitting lighting columns for electric vehicle (EV) charging points;
explanation of the original derivation of the R_wf values;
guidance and figures showing various typical foundations arrangements;
introduction of the Andrée and Norsa method of design for foundations for lighting columns; and
structural assessment of cable slots.

This publication can be withdrawn, revised, partially superseded or superseded. Information regarding the status of this publication can be found in the Standards Catalogue on the BSI website at bsigroup.com/standards, or by contacting the Customer Services team.

Where websites and webpages have been cited, they are provided for ease of reference and are correct at the time of publication. The location of a webpage or website, or its contents, cannot be guaranteed.

Use of this document

As a guide, this Published Document takes the form of guidance and recommendations. It should not be quoted as if it were a specification or a code of practice.

Presentational conventions

The guidance in this standard is presented in roman (i.e. upright) type. Any recommendations are expressed in sentences in which the principal auxiliary verb is “should”.

Commentary, explanation and general informative material is presented in smaller italic type, and does not constitute a normative element.

Where words have alternative spellings, the preferred spelling of the Shorter Oxford English Dictionary is used (e.g. “organization” rather than “organisation”).

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

1 Scope

This Published Document gives guidance and background information to specifiers and manufacturers of lighting columns on the use of BS EN 40‑3‑1 and BS EN 40‑3‑3, which specify the design of lighting columns. In particular, it gives guidance on the information which the specifier is required to give to the manufacturer to allow a suitable lighting column to be designed, such as the topography factor, site wind speed, site altitude and terrain category, which are used to determine the design wind pressure.

This Published Document provides additional guidance, not included within the scope of BS EN 40, on the design and fitting attachments to lighting columns, steel fatigue design checks, lighting column foundation designs and the installation of lighting columns on site.

2 Normative references

3 Terms, definitions, symbols and abbreviated terms

3.1 Terms and definitions

3.2 Symbols

3.3 Abbreviated terms

4 Specification of lighting columns

5 Background information on the design wind loadings in BS EN 40‑3‑1

6 Wind pressures

6.1 General

6.2 Reference wind pressure q(10)

6.3 Exposure coefficient c_e(z)

7 Rationalized wind loading factors (R_wf)

8 Design loads and horizontal deflection

8.1 General

8.2 Partial safety factors on loads, γ_f

8.3 Deflection classes

9 Lighting column foundations

9.1 Planting depth

9.2 Planted root foundations

9.3 Retention socket foundations for rooted lighting columns

9.4 Concrete pad foundations

9.5 Screw pile foundations

9.6 Lighting columns mounted on other structures

9.7 Lighting columns mounted on slopes

10 Design of flange plates

10.1 General

10.2 Holding down system

10.3 Typical arrangement of flange plates

10.4 Minimum edge distances

10.5 Structures not subject to vehicle impact

10.6 Structures subject to vehicle impact

10.7 Simplified design procedure

10.8 Detailed design procedure

10.9 Design for bending in flange plates

10.10 Stresses in holding down bolts

11 Pull-out test loads

12 Road signs and other attachments to lighting columns

12.1 Road signs

12.2 Force coefficients for signs

12.3 Other attachments

12.4 Modifications to lighting columns after design and installation

12.5 Retrofitting electric vehicle charge point

13 Assessment of fatigue

13.1 General

13.2 Wind induced vibration

13.3 Vortex induced vibration

13.4 Galloping vibration

Bibliography

PD 6547:2023

Guidance on the use of BS EN 40-3-1 and BS EN 40-3-3

Current

Published:

31 Dec 2023