Road Management Guidance Update of the Orange Book 2014

download report

Transcript Road Management Guidance Update of the Orange Book 2014

Road Management Guidance
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
Speaker
• Gavin O’Donnell
-
2
NRA Standards Project Co-ordinator (2011-2014)
Associate Director, Arup
Chartered Engineer
Update of the Orange Book 2014
Agenda
• Overview
• Objectives
• Pavement Evaluation and Management
• Design Principles
• Materials for Use
• Other Minor Changes
• Appendices
• Best Practice Guide
3
Update of the Orange Book 2014
4
Update of the Orange Book 2014
Overview
• Guidelines on the Depth of Overlay to be used on Rural NonNational Roads, First Edition, DOELG
- First edition of the Orange Book published in May 1999
- 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 2014
- Formally launched at today’s conference
5
Update of the Orange Book 2014
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- Reference to historical documents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
6
Update of the Orange Book 2014
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
7
Update of the Orange Book 2014
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
-
8
Update of the Orange Book 2014
1 & 2 - Road Reconstruction
3 & 4 - Structural Overlay
5 & 6 - Surface Restoration
7 & 8 - Resealing and Restoration
of Skid Resistance
Pavement Evaluation and Management
• Treatment Options
- Resealing and Restoration of
Skid Resistance (Ratings 7 &
8) – addresses waterproofing
& skid resistance where
surface defects exist.
-
9
Surface Restoration (Ratings
5 & 6) – addresses drainage,
potholes & local
strengthening of weak road
edges.
Update of the Orange Book 2014
Pavement Evaluation and Management
• Treatment Options (Continued)
- Structural Overlay (Ratings 3
& 4) – addresses regulation
and overlaying of existing
pavements, and drainage.
-
10
Update of the Orange Book 2014
Road Reconstruction
(Ratings 1 & 2)– removal of
existing pavement and
replacement with new
structural layers, and
drainage.
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
11
Update of the Orange Book 2014
Design Principles
• Chapter 3
- First Edition Chapters
2, 3, 4 & 5 combined,
text / references update
12
-
Focus on update to
reflect NRA HD 25-26
Pavement and
Foundation Design
Standard
-
Guidance on FWD
methods updated (ref.
Appendix A)
Update of the Orange Book 2014
Materials for Use
• Chapter 4 – New Chapter
- Detailing the typical pavement layers
- Material descriptions
- Guidance linked to layers
13
Update of the Orange Book 2014
Materials for Use
• Summary Tables of Overlay Materials
- Material Types
- Advantages
- Disadvantages
- Factors / Conditions to Note
14
-
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
Materials for Use
15
Update of the Orange Book 2014
Other Minor Changes
• 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
16
Update of the Orange Book 2014
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
http://nrastandards.nra.ie 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
17
Update of the Orange Book 2014
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
18
Commencement
Checks
Cold Milling
Pavement
Widening
Surface Dressing
Notes on Material
Layers
Bituminous
Joints
Kerbing
Placing Chippings
on HRA
Material Laying
Tack/Bond Coat
Quality and
Testing
Completion
Checks
High Friction
Surfacing
Compaction
Update of the Orange Book 2014
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
19
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
Queries
• For comments or queries, please note the contact details on the
rear cover of the March 2014 Orange Book;
20
Update of the Orange Book 2014
Road Management Guidance
Update of the Orange Book 2014
Thank You!
Presentation to the Local Authority Roads Conference 2014
Treacy’s West County Hotel, Ennis
By Gavin O’Donnell, Arup
21 May 2014