1 ROADS Services Training Group LOCAL AUTHORITY ROADS CONFERENCE 2015 Reforms, Challenges and Safety Treacys West County Hotel, Ennis, May 2015.

Reforms, Challenges and Safety Guidelines for the Backfilling and Reinstating of Openings on Public Roads “The Purple Book” Brendan Jennings Senior Engineer Cavan County Council

Specification and Drawings  Previous version was comprehensive and robust document  How do we make them better  What do the users need  What is best practice in other countries  Other specifications and standards have changed, NRA etc.  New technology and construction methods  Consistent approach  Buy-in from all users

Specification  Chapter 6 of the Purple Book  To be read in conjunction with Chapter 7 – Drawings  Main headings similar to previous version  Reordered to match the sequence of works on site  11 sections in chapter 6  New sections introduced

Specification - Layout 1) Introduction 2) Definitions 3) Pre-works Investigations 4) Identification Markers 5) General Construction Requirements 6) Backfilling of Openings 7) Compaction 8) Joints, Bonding and Sealing 9) Road Assets & Equipment 10) Quality Control 11) Alternative Methods

Introduction & Definitions  Introduction  Can’t cover every scenario  Prior written approval of Road Authority  Definitions  Intervention  Temporary Reinstatement  Permanent Reinstatement  Immediate Permanent Reinstatement

Pre-Works Investigations  New section  Encourages proper planning of the works  Identification of services  Coordination with other  stakeholders  Health & Safety element  Guides the user to collate the information needed for the application  Agree works with Road Authority  Reduce costs in long term

Identification Markers

General Construction Requirements  National Roads - NRA Spec  Materials - NRA Spec for Roadworks  Location of trench / avoidance of services  Cutting the road  Excavation works

General Construction Requirements  Excavating around trees  Availability & use of steel plates  Site Management & Storage  Rubber tyred/tracked excavators

Backfilling & Compaction  Backfill Material  Compaction equipment  Use of compaction equipment  Lift thickness for bound/unbound materials  Compaction requirements  Influences long term performance

Joints  Bond coat – Cl900  Vertical faces of joints  For both temp & permanent reinstatement  Over banding – skid resistance

Joints – Bad Example

Joints – Good Example

Road Assets  Road Markings & Road Studs  Specialist / Ornamental Surfaces  Traffic Sensors / Loops  Street Furniture  Manhole covers & other ironwork

Quality Control  Defects – e.g. Edge depression, ravelling, rutting, potholes, joint sealing  Defects as per PSCI Surveys  Intervention limits

Alternative Methods  Trenchless pipe laying  Micro trenching  Protection of existing and new service  Mixed opinion  Not exclude advancement in technology  Control with Road Authority

Drawings  Chapter 7 of Purple Book  General reinstatement notes  General arrangement drawings plus 14 standard drawings  Read in conjunction with Chapter 6 – Specification  Some similarity to previous version  Series of notes with each drawing

General Arrangement Drawings  Plan view of potential layouts with resultant reinstatement requirements  Layouts for roads & footpaths  Longitudinal, Transverse  Concrete, asphalt concrete and modular paving situations  Management of trim lines  Additional reinstatement  Existing joints, kerbs, ironwork

General Arrangement Drawings

Standard Drawings – Part 1 1) Permanent & Immediate Permanent Reinstatement - Transverse Openings in Roadways 2) Temporary Reinstatement - Transverse Openings in Roadways (Subject to Specific Permission of the Road Authority) 3) Temporary Reinstatement - Longitudinal Openings in Lightly Trafficked Rural Roads 4) Temporary Reinstatement - Longitudinal Openings in Roadways 5) Permanent & Immediate Permanent Reinstatement - Longitudinal Openings in Roadways 6) Permanent & Immediate Permanent Reinstatement - Longitudinal Openings in Roadways at Heavy Duty Locations 7) Permanent & Immediate Permanent Reinstatement - Longitudinal Openings in Rural Roadways with Surface Dressing

Standard Drawings – Part 2 8) Permanent & Immediate Permanent Reinstatement - Concrete Roadways 9) Permanent & Immediate Permanent Reinstatement - Roadways with Precast Concrete Paving Blocks 10) Temporary Reinstatement - Footways – (Subject to Specific Permission of the Road Authority) 11) Permanent & Immediate Permanent Reinstatement - Asphalt Concrete (Bituminous Macadam) Footways 12) Permanent & Immediate Permanent Reinstatement - Concrete Footways 13) Permanent & Immediate Permanent Reinstatement - Precast Concrete Paving Block / Concrete Slab Footways 14) Permanent Reinstatement - Grass Verges, Medians, Fields and Lawns

Transverse Openings

Longitudinal Openings

Surface Dressed Roads

Concrete Roads

Paved Footways

Drawings Notes

Conclusion  Improve on current standards  Consistent implementation  Better compliance  Reduced costs  Scope to embrace new technology

Conclusion