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CONDITION APPRAISAL AND REMEDIAL TREATMENT

CIRIA Research Project RP692 MASONRY AND BRICK ARCH BRIDGES:. CONDITION APPRAISAL AND REMEDIAL TREATMENT. MASONRY AND BRICK ARCH BRIDGES:. CONDITION APPRAISAL AND REMEDIAL TREATMENT. Dr. John Perry (Project Director) Mr. Leo McKibbins (Project Manager)

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CONDITION APPRAISAL AND REMEDIAL TREATMENT

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  1. CIRIA Research Project RP692 MASONRY AND BRICK ARCH BRIDGES: CONDITION APPRAISAL AND REMEDIAL TREATMENT

  2. MASONRY AND BRICK ARCH BRIDGES: CONDITION APPRAISAL AND REMEDIAL TREATMENT Dr. John Perry (Project Director) Mr. Leo McKibbins (Project Manager) Dr. Carlos Sicilia (Co-author) Professor Clive Melbourne (Co-author) Mr. Simon Walker (Co-author)

  3. NEED FOR MAINTENANCE, REPAIR AND STRENGTHENING NEED FOR BEST PRACTICE GUIDANCE The problem: • Masonry arch bridge construction long abandoned in the UK • UK transport network dependent on masonry and brick arches • Subjected to ever increasing traffic levels, speeds and loads • Frequently 100+ years old • Some are damaged or have simply deteriorated gradually

  4. UK Infrastructure Key elements of UK transport infrastructure: • Network Rail • London Underground Limited • British Waterways • Highways Agency

  5. canals circa 1800's British Waterways

  6. Network Rail • railways circa 1850's

  7. London Underground • underground circa 1900's

  8. Highways Agency • motorways and trunk roads circa 1960's onwards

  9. UK infrastructure • canals circa 1800's • railways circa 1850's • underground circa 1900's • motorways and trunk roads circa 1960's onwards

  10. Magnitude of the problem: Masonry and brick arches comprise: • 40% of UK bridge stock (largest single group) • 40,000 arch highway bridges • 33,000 railway arch spans • Very high proportion of British Waterways’ assets

  11. Purpose of the Project • To present best practice guidance • To facilitate knowledge sharing • To provide an enabling document • To have national application • To recommend maintenance strategies representing best value for money • To provide impartial assessment and advice

  12. Main User Groups The report should provide guidance for: • Clients (asset owners and operators) in railways, road and canals infrastructures • Engineers (consultants and contractors) • Maintenance managers

  13. Approach • Asset Management • Structural Behaviour of masonry and brick arch bridges • Loss of bridge performance • Condition appraisal and assessment of capacity • Preventative, remedial and strengthening measures • Monitoring • Environmental and heritage considerations • Future research

  14. Method • Literature review • Consultation • Case histories • Assessment of information • Conclusions and reporting

  15. The Consultation Process • Involve individuals and organisations with experience and expertise in brick and masonry arch bridges. • Contribution of knowledge, user’s perspective, views on content and material for inclusion (e.g. case-studies). • Consultation Workshop • Questionnaires (available on CIRIA website) • Ongoing consultation (RP692 Steering Group, correspondence and interviews with individuals)

  16. Your opportunity to contribute to the report Aiming to explore relevant issues, discuss report content and define industry best-practice Open-forum discussion based around topics: Asset management Bridge performance, appraisal and assessment Maintenance and repair The future of masonry and brick arch bridges Today - the Consultation Workshop

  17. Asset Management • What are the performance requirements for masonry and brick arch bridges? • Are they likely to change in future? • How are masonry and brick arch bridge assets currently managed? • What are the main issues of concern for owners/managers of these structures? • What are the key issues to be dealt with in the report? • What guidance should be given as to best practice in asset management?

  18. Condition Appraisal and Assessment • How is bridge condition currently appraised? • What are the requirements for routine and special investigations? • What are the causes of loss of performance and how can their effects be assessed? • What are the principal structural assessment methods? • What are the main considerations in their use? • What key issues should be considered in the report? • What guidance should be given as to best practice?

  19. Maintenance and Repair • What are the principal factors in the selection and design of remedial works? • How can future maintenance requirements best be assessed? • Which strategies and techniques have proven effective, and which ineffective, in the past? • What key issues should be addressed in this report? • What guidance should be given as to best practice in this area?

  20. The Future • What is the outlook for masonry and brick arch bridges in the future? • What areas would benefit from improved knowledge and experience? • Are there any promising new developments in the areas discussed? • What lessons have been learned from our experience with these structures to date? • How can we best ensure the long-term serviceability of these bridges as part of our transport infrastructure?

  21. Producing the report: what happens now? • Ongoing consultation process • Issue and return of Questionnaires • Direct consultation via correspondence and/or interviews • All contributions gratefully received • Benefit of advice, knowledge, experience • Case-studies illustrating good or poor practice • Photographs, diagrams, illustrations

  22. Closing Points • Thank you for your contribution today! • Please visit the CIRIA website and complete and return a Questionnaire • Any further contributions to the report, ideas or discussion of its content, should be directed to Leo McKibbins (Mott MacDonald)

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