This guide provides practical advice to assist good workmanship and promote the highest standards of reinstatement by site Practical Guide to Street Works operatives and supervisors under the New Roads and Street Works Act 1991. It is NOT a replacement or abbreviated version of the Code of Practice, Specification for the Reinstatement of Openings in Highways (Second Edition [England], June 2002). Information is presented in the order that a reinstatement is undertaken, from signing, excavating, reinstating and then leaving a completed job. Each section is typically broken down to cover: • Specification details • checks, with hints and tips of what to look out for • a list of tasks to be completed • health and safety issues to be aware of. £9.95 www.tso.co.uk 5527465X_PGTSW cover_Vn1_0.indd 1 18/4/06 10:42:01 Practical Guide to Street Works Compiled and designed by TRL Limited on behalf of the Department for Transport and in consultation with HAUC (UK) June 2006 London: TSO Published by TSO (The Stationery Office) Department for Transport and available from: Great Minster House 76 Marsham Street Online London SW1P 4DR www.tsoshop.co.uk Telephone 020 7944 8300 Web site www.dft.gov.uk Mail,Telephone, Fax & E-mail TSO © Queen’s Printer and Controller of Her Majesty’s PO Box 29, Norwich, NR3 1GN Stationery Office, 2006, except for the following: Telephone orders/ • extracts from the Specification for the General enquiries: 0870 600 5522 Reinstatement of Openings in Highways (Second Fax orders: 0870 600 5533 Edition [England], June 2002), highlighted in yellow, E-mail: [email protected] which are Crown copyright; Textphone 0870 240 3701 • photographs, which have been provided by Bomag, NJUG,Terex,TRL Limited and Wacker (Great TSO Shops Britain) Limited; 123 Kingsway, London,WC2B 6PQ 020 7242 6393 Fax 020 7242 6394 • other illustrations. 68-69 Bull Street, Birmingham B4 6AD This publication, excluding logos, may be reproduced 0121 236 9696 Fax 0121 236 9699 free of charge in any format or medium for non­ 9-21 Princess Street, Manchester M60 8AS commercial research, private study or for internal 0161 834 7201 Fax 0161 833 0634 circulation within an organisation.This is subject to 16 Arthur Street, Belfast BT1 4GD it being reproduced accurately and not used in a 028 9023 8451 Fax 028 9023 5401 misleading context.The copyright source of the 18-19 High Street, Cardiff CF10 1PT material must be acknowledged and the title of the 029 2039 5548 Fax 029 2038 4347 publication specified. 71 Lothian Road, Edinburgh EH3 9AZ 0870 606 5566 Fax 0870 606 5588 For any other use of this material please apply for a Click-Use Licence at www.opsi.gov.uk/click­ TSO Accredited Agents use/index.htm, or write to Licensing Division, Office (see Yellow Pages) of Public Sector Information, St Clements House, 2–16 Colegate, Norwich NR3 1BQ, fax 01603 723000, and through good booksellers or e-mail [email protected] This is a value added publication which falls outside the scope of the Core Click-Use Licence. ISBN-13 978-0-11-552746-3 Printed in Great Britain on paper containing at least ISBN-10 0-11-552746-X 75% recycled fibre. June 2006 Printed in the United Kingdom for TSO N186630 C200 06/06 Acknowledgements This guide is intended as a quick user-friendly reference document for use by site operatives and supervisors involved with the reinstatements of openings in highways under the New Roads and Street Works Act 1991. This guide is NOT a replacement or abbreviated version of the Code of Practice, Specification for the Reinstatement of Openings in Highways (Second Edition [England], June 2002), which has been approved by the Secretary of state under Section 71 of the 1991 Act.That Code provides practical guidance on the standards required in relation to materials, workmanship and standard of reinstatement of street works carried out by utilities and other undertakers with apparatus in the street. Failure to comply with the Code will be evidence of a breach of an undertaker’s statutory obligations. This Guide serves a different purpose and is intended to provide practical advice to assist good workmanship and promote the highest standards of reinstatement by site operatives and supervisors. It includes relevant reference material from the Specification for the Reinstatement of Openings in Highways (Second Edition [England], June 2002).Where direct reference is made to the Specification, the relevant section number is given in brackets (See Section n.nn). Text, tables and figures reproduced from the Specification are presented on a yellow background, with a reference to the relevant section. The symbol in the margin identifies these references in the text. e.g SROH Figure and table numbers from the Specification are given in the left margin. Table S1.1 FULL COMPLIANCE WITH THE SPECIFICATION IS REQUIRED IN ALL CASES. The use of photographs provided by Bomag, National Joint Utilities Group (NJUG),Terex,TRL Limited and Wacker (Great Britain) Limited within this document is gratefully acknowledged. Practical Guide to Street Works Contents Acknowledgements 3 Contents 4 Preface by HAUC (UK) 6 How to use this Guide 7 List of reference documents 8 1. Introduction 9 2. Specification designs and categories 10 3. Tools and equipment 12 4. Signing, lighting and guarding 13 5. Undertaking excavations 15 6. Trench sidewall support 17 7. Precautions for protecting trees 18 8. Excavating surfacings: bitumen bound 20 rigid roadslabs 22 rigid surface in footways 24 modular 25 9. Excavating below surfacing layers 26 10. Notes on compaction 27 11. Preparing subgrade 31 12. Working with buried apparatus 32 13. Reinstating backfill 34 14. Reinstating sub-base 35 15. Reinstating upper layers 36 16. Reinstating base (roadbase) for flexible/composite roads and footways 37 17. Reinstating roadslab for rigid roads 38 18. Reinstating surface slab for rigid footways 40 19. Reinstating modules 41 20. Notes on hot-lay bituminous materials 42 21. Reinstating hot-lay bituminous surfacing layers 47 22. Overbanding 51 23. Verges and unmade ground 54 Practical Guide to Street Works Contents (continued) 24. Leaving the finished site 56 Annex 1 Backfill materials: General information 57 Identification 59 Annex 2 Compaction equipment: Standard 63 Alternatives 65 Calculating weight categories 66 Guidance on use 67 Annex 3 Alternative Reinstatement Materials (ARMs) 68 Annex 4 Reinstating cold-lay surfacing materials 72 Annex 5 NJUG guidance on the colour coding of utilities’ apparatus 75 Annex 6 Table A8.1 Compaction (non-bituminous) 76 Annex 7 Table A8.3 Compaction (bituminous) 77 Annex 8 Table A2.2 and Table A2.3 Compacted lift thickness 78 Annex 9 Table A2.4 Laying temperatures (bituminous) 79 Annex 10 Table S10.1 Air void contents 80 Annex 11 Performance requirements – As laid profile 81 Performance requirements – Skid resistance 85 Practical Guide to Street Works Preface by HAUC (UK) HAUC (UK) is acutely aware of the importance of good quality reinstatements which reflect directly on all who are involved in working on the streets and managing such work. This Guide is a welcome addition and will assist all involved in street works operations but particularly the practitioners who carry out the works. CAUTION The methods and procedures listed in this Guide describe the standard recommended techniques used for excavation and reinstatement. However, not all possible variations can be covered in a summary document. Utility, Contractor and Contract requirements may result in techniques being used that are not described in this document.These other techniques may have additional engineering requirements and legal obligations associated with them.The planning and undertaking of the reinstatement process must take account of these obligations. Practical Guide to Street Works How to use this Guide This Practical Guide is designed to be used mainly by Street Works Operatives. It may also be used as a reference for Supervisors. Items which target Supervisor level are highlighted in the text by the use of ‘Supervisor boxes’. The Guide is divided into Sections (see Contents page).The information is presented in the order a reinstatement is undertaken, from signing, excavating, reinstating and then leaving the completed job. Each section is typically broken down to cover: ● Specifications details ● checks, with hints and tips of what to look out for ● a list of tasks to be completed ● Health and Safety issues to be aware of Symbols have been used to highlight certain kinds of information.The meaning of each symbol is as follows: Details For general Important from the information information Specification and reminders Tasks to be Compaction Materials completed Tools and Checks Health and equipment safety Practical Guide to Street Works List of reference documents British Standards Institution: ● BS 598: Part 105: Sampling and examination of bituminous mixtures for roads and other paved areas: Methods of test for determination of texture depth. ● BS 812: Part 113:Testing aggregates. Method for determination of aggregate abrasion value (AAV). ● BS 4987: Part 1: Coated macadam (asphalt concrete) for roads and other paved areas. Specification for constituent materials and for mixtures. ● BS 5075: Part 2: Concrete admixtures. Specification for air- entraining admixtures. Construction Information Sheet No 8. Safety in Excavations. HSE. Construction Information Sheet No 40. Construction (Design and Management) Regulations 1994. HSE. Construction Information Sheet No 47 (Avoiding Danger from Underground Services). HSE. Dewatering of Underground Ducts and Chambers. Pollution Prevention Guidelines (PPG20). Environment Agency. Guidelines for the Planning, Installation and Maintenance of Utility Services in Proximity to Trees. NJUG 10 April 1995 Guidelines on the Positioning and Colour Coding of Utility Apparatus. NJUG (2003). Guidelines for the Planning, Installation and Maintenance of Utility Services in Proximity to Trees. NJUG (1995). Health and Safety at Work Act 1974.