Presentation to the Local Authority Roads Conference 2014 Treacy’s West County Hotel, Ennis By Gavin O’Donnell, Arup 21 May 2014 Road Management Guidance Update of the Orange Book 2014

2 Speaker Gavin O’Donnell - NRA Standards Project Co-ordinator ( ) - Associate Director, Arup - Chartered Engineer Update of the Orange Book 2014

3 Agenda Overview Objectives Pavement Evaluation and Management Design Principles Materials for Use Other Minor Changes Appendices Best Practice Guide Update of the Orange Book 2014

4

5 Overview Guidelines on the Depth of Overlay to be used on Rural Non- National Roads, First Edition, DOELG - First edition of the Orange Book published in May Provided a valuable and accessible user-guide for those engaged in overlay design - Remained useful, but standards became dated over time Guidelines on the Depth of Overlay to be used on Rural Regional and Local Roads, Second Edition, DTTAS - Arup was engaged to review and update the First Edition - Delivered through a Technical Committee - Published in March Formally launched at today’s conference Update of the Orange Book 2014

6 Objectives Initial Brief - Update to current EU and NRA DMRB Standards - Reference to historical documents - New methods and technologies - Materials advice - Appendices update Other Considerations - Additional context with other DTTAS initiatives inserted for consistency (e.g. the Rural Flexible Roads Manual, etc.) - Document to remain as largely stand-alone (i.e. NRA Specification extracts remain in appendices) - Expand guidance on materials and construction issues Update of the Orange Book 2014

7 Pavement Evaluation and Management Chapter 2 – New Chapter Pavement Evaluation - Summary of the recent procedure developments - ‘Regional Road Network Pavement Condition Study Report’ - ‘Rural Flexible Roads Manual’ - Rating based on the PSCI (annual programme) - Periodic visual inspection Update of the Orange Book 2014

8 Pavement Evaluation and Management Condition Rating - Initial step of Network Level Assessment - Linked to the PSCI rating system - Mechanical Data and Visual Inspection used Treatment Measures by Condition Rating - 1 & 2 - Road Reconstruction - 3 & 4 - Structural Overlay - 5 & 6 - Surface Restoration - 7 & 8 - Resealing and Restoration of Skid Resistance Update of the Orange Book 2014

9 Pavement Evaluation and Management Treatment Options - Resealing and Restoration of Skid Resistance (Ratings 7 & 8) – addresses waterproofing & skid resistance where surface defects exist. - Surface Restoration (Ratings 5 & 6) – addresses drainage, potholes & local strengthening of weak road edges. Update of the Orange Book 2014

10 Pavement Evaluation and Management Treatment Options (Continued) - Structural Overlay (Ratings 3 & 4) – addresses regulation and overlaying of existing pavements, and drainage. - Road Reconstruction (Ratings 1 & 2)– removal of existing pavement and replacement with new structural layers, and drainage. Update of the Orange Book 2014

11 Pavement Evaluation and Management Flow Chart Assessment and Management Process - Network Level - Mechanical Data Project Level Assessment - Site Inspection - Additional Data - Confirm PSCI - Other Issues (e.g. H&S, Drainage, Visibility, etc.) Construction & Post Construction Assessment Update of the Orange Book 2014

12 Design Principles Chapter 3 - First Edition Chapters 2, 3, 4 & 5 combined, text / references update - Focus on update to reflect NRA HD Pavement and Foundation Design Standard - Guidance on FWD methods updated (ref. Appendix A) Update of the Orange Book 2014

13 Materials for Use Chapter 4 – New Chapter - Detailing the typical pavement layers - Material descriptions - Guidance linked to layers Update of the Orange Book 2014

14 Materials for Use Summary Tables of Overlay Materials - Material Types - Advantages - Disadvantages - Factors / Conditions to Note - Table 4.1 – Granular Unbound, Granular Bound and Cold Bituminous Mix Materials - Table 4.2 – Hot Bituminous Materials - Table 4.3 – Recycled Materials Update of the Orange Book 2014

15 Materials for Use Update of the Orange Book 2014

16 Rational Overlay Design Solutions - Chapter 5 – Adaption of 1999 Chapter 6 - Tables updated to include equivalent design traffic parameters (in terms of msa) Drainage - Chapter 7 – Update of 1999 Chapter 8 - Drainage guidance updated and reference documents added General Recommendations - Chapter 8 – Update of 1999 Chapter 9 - Recommendations added regarding survey data & record keeping, temporary traffic management and safety & health Update of the Orange Book 2014 Other Minor Changes

17 Appendices Appendix A – updated to include latest guidance on FWD testing Appendix B – reproduction of Sample Trial Pit Log Appendix C – updated App E to reflect new standards for Bituminous Material layer thicknesses Appendix D – update App C to reflect changes to the NRA Series 800 pavement specification requirements (see or all NRA Standards and Specifications) Appendix E – reproduction of App D – Provisional specification for stabilised wet-mix macadam Appendix F – production of Best Practice Guide Update of the Orange Book 2014

18 Best Practice Guide Appendix F expanded for Pavement Works Construction Significant input from Local Authorities to reflect the realities Notes on items to watch at various stages of the pavement construction process, including the items listed below Update of the Orange Book 2014 Commencement Checks Cold MillingPavement Widening Surface Dressing Notes on Material Layers Bituminous Joints KerbingPlacing Chippings on HRA Material LayingTack/Bond CoatQuality and Testing Completion Checks High Friction Surfacing Compaction

19 Acknowledgements Technical Committee - DTTAS (John McCarthy) - NRA (John Fitzsimons and Eddie Winterlich) - Roscommon County Council (Greg O’Donnell) - Arup (Eoin Brennan, Peter Adams and Gavin O’Donnell) also received inputs from Kieran Feighan, PMS. Local Authority Contributions - Cork County Council (Aidan Weir) - Donegal County Council (Stephen Flynn) - Kerry County Council (Frank Harnett) - Leitrim County Council (Seamus O’Connor) - Offaly County Council (Charles McCarthy) - South Tipperary County Council (Peter Britton) - Wexford County Council (Noel O’Driscoll) Update of the Orange Book 2014

20 Queries For comments or queries, please note the contact details on the rear cover of the March 2014 Orange Book; Update of the Orange Book 2014

Presentation to the Local Authority Roads Conference 2014 Treacy’s West County Hotel, Ennis By Gavin O’Donnell, Arup 21 May 2014 Road Management Guidance Update of the Orange Book 2014 Thank You!