LoTAG Asphalt for London

The London Technical Advisors Group (LoTAG) maintains a technical network for local government professionals and co-opted members in the highway and transport fields. It provides a centre for professional advice and assistance for local policy development and service delivery on a London wide basis.

As part of this remit the Highway Maintenance Steering Group, a sub group of LoTAG Group 2 was tasked with producing a common specification suitable for London's needs in the 21st century.

The chair of HMSG, Martin Sachs managed to get funding for the project from the London Centre of Excellence and tasked Jacobs with carrying out the study and production of the report.

The report provides:-

·      a translation of all the names of all asphalt mixtures used in London from the old obsolete British Standards to the new nomenclature  We have been assured by the supply industry that the use of these materials will be cost neutral.

·      a core list of preferred mixtures. Increased use of these will lead to improved quality and help to keep costs down.

·      additional specification clauses, and draft Appendix 7/1 clauses and Bills of Quantities

·      Notes for Guidance on the selection of materials for the various Road Classes as defined in the NRSWA gazetteer.

·      Useful background Notes For Guidance on pavement maintenance issues such as sustainability, skid resistance and tyre noise.

The document is an indispensable aid to your implementation of the new European Standards. Please raise any detailed questions with our Project Consultant ian.walsh@jacobs.com who has agreed to provide help.

The HMSG has set up a number of project boards to assist London's technical community. Click here for details.

Links

London wide asphalt specification:

Guidance on the selection and recommendations for the use of road surfacing materials and European Standards for Asphalt

Appendix 7 Summary of selected asphalt layers by Road Type

A further part of the study was to compile a register of contracts held by the London Boroughs for highway maintenance. London Contract Register

London wide asphalt project summary

The HMSG arranged a training day sponsored by the London Centre of Excellence for all London's technical community.

Martin's staff did an excellent job in organising an excellent day appreciated by all attending.

Program for the day

List of attendees

Presentations in PDF format (some are quite large so may take time to download)

1. Constituents of Asphalt

2. Mixtures - What are they?

3. Mixing and transport of asphalt

4. Mixtures - How to specify them

5. The London Asphalt Specification

6. Laying Asphalt

7. Pavement Faults What they are and why they happen

8. Failure Investigations and Skid Resistance

These presentations are a valuable tool for all those involved with highway design & maintenance and we are grateful for Andy Simms the Technical Director of Jacobs for sharing them with us.