TECHNICAL EXPERTISETECHNICAL EXPERTISE
Structural Testing
Peter Lindsell & Associates have wide experience of full-scale and model testing of bridges and structures over a period of more than 25 years. Incremental live load tests have been applied to more than 120 bridge spans, constructed from cast iron, wrought iron, steel, reinforced and prestressed concrete. Structural instrumentation and in situ stress measurements have also been undertaken on numerous structures throughout the UK and abroad.
PROJECT EXPERIENCE
Dr Peter Lindsell, MA(Oxon), PhD, CEng, MICE, MIStructE, MIHT, MEWI, FIDE
Introduced to live load testing of bridges in 1971 following the reconstruction and strengthening of five 3-span post-tensioned segmental bridges. Initiated a research programme involving the model testing of a range of typical concrete bridge abutments to assess the benefits of 3-D behaviour from 1975-79. Subsequently, designed and installed a long-term monitoring system to record the construction effects and earth pressures acting on a pair of spill-through bridge abutments from 1981-87 on behalf of the Transport and Road Research Laboratory. Additional research grants awarded by CIRIA and SERC from 1983-89 to develop structural monitoring and in situ stress measurement techniques to assess long-term losses of prestress in post-tensioned concrete structures. Major structures tested during this period included the concrete linings of the initial sections of the Channel Tunnel and several concrete box girder decks in service and during controlled dismantling.
Joint author of research reports for Transport Research Laboratory on “Measurements of Prestress Losses” and “Additional Sources of Prestress Losses” in post-tensioned concrete bridges, based upon previous research and field studies. Undertook in situ stress measurements and structural tests on some 150 bridges and structures throughout the UK, Europe and Far East. Responsible for drafting initial research study and framework for load testing of bridges on behalf of the National Steering Group.
Dr Susanné Buchner, BSc, PhD, CEng, MICE, FIDE
Joined full-scale structural research team at Surrey University in 1983. Awarded PhD in 1989 for research monitoring of full-scale structures during demolition and in situ measurement of long-term prestress losses in existing structures. Worked in conjunction with Dr Lindsell on all structural testing projects since 1983 to present time. Joint author of research reports for TRL and National Committee on Load Testing of Bridges. Presented numerous lectures and papers on in situ stress measurements and live load testing of bridges throughout the UK.
Selection of Major Publications & Reports: Instrumentation & Load Testing
1. Lindsell P. "Model Analysis of Bridge Abutments". PhD Thesis, University of Salford, 1982.
2. Lindsell P, Buchner SH and Mehrkar-Asl S. "Stresses in the Channel Tunnel linings". Final Report for Gage Technique Ltd/Mott Hay & Anderson. Dept of Civil Eng, University of Surrey, November 1986.
3. Lindsell P and Buchner SH. "Long-term Monitoring of Spill-through Bridge Abutments". IStructE/BRE Seminar on Structural Assessment - Based on Full and Large Scale Testing, Watford, April 1987.
4. Buchner SH. "Full-scale Testing of Prestressed Concrete Structures". PhD Thesis, University of Surrey, 1989.
5. Lindsell P. "Load Testing and Residual Stress Measurements in Concrete Bridges". Seminar on Hidden Strength - Load Testing for Bridge Assessment, Surveyor Publ., London, February 1994.
6. Lindsell P. and Buchner SH. "Structural Behaviour of Bridge Abutments". Conference on Bridge Assessment, Management and Design. Proc. of Centenary Bridge Conference, Cardiff, Elsevier, September 1994, pp 411-416.
7. Lindsell P. "Principles of Load Testing". Seminar on Post-tensioned Concrete Bridges - Assessing the Risks, New College, Oxford, January 1995.
8. Lindsell P. "Evaluation from Structural Tests". Seminar on The Role of Load Testing in the Assessment and Repair of Bridges, New College, Oxford, April 1997.
9. Buchner SH. "Appraisal of Buried Structures". Seminar on The Role of Load Testing in the Assessment and Repair of Bridges, New College, Oxford, April 1997.
10. Lindsell P. "Load Testing in Practice". National Steering Committee Conference on Bridge Testing: Guidelines for Supplementary Load Testing. Thomas Telford Conferences, September 1997.
11. Buchner SH. "In Situ Testing Procedures". Seminar on The Role of Load Testing in the Assessment and Repair of Bridges, New College, Oxford, April 1997.
12. Lindsell P and Cole G. “Bridge Load Testing in Surrey”. The Structural Engineer, Vol. 76, No. 5, March 1998.
STRUCTURAL DEMOLITION
Peter Lindsell & Associates have extensive experience of structural demolition, dating back to 1970. Particular expertise is available for the planning and supervision of the demolition of post-tensioned concrete bridges and complex structures.
DEMOLITION EXPERTISE:-
Dr Peter Lindsell, MA(Oxon), PhD, CEng, MICE, MIStructE, MIHT, MEWI, FIDE
Commenced demolition activities in 1970 with selective demolition of five 3-span continuous post-tensioned segmental bridges. Established a “Demolition and Recycling Research Unit“ at Surrey University in 1983. Initiated structural monitoring and stress measurement techniques in order to record the behaviour of post-tensioned concrete structures during demolition. Research sponsored by CIRIA and SERC grants. Subsequently responsible for the planning and supervision of more than 40 prestressed concrete structures, ranging from bridges, shell roof structures, water retaining structures and nuclear facilities.
Drafted procedures for the controlled demolition of prestressed concrete structures, adopted in H.S.E. guidelines on demolition GS29. Prepared guidelines for the demolition of prestressed concrete structures, published by RILEM/European Demolition Association in 1985. Drafted Singapore National Guidelines for the Demolition and Structural Alteration of Prestressed Concrete Structures in 1991. Prepared Research Report for Department of Transport on “Design for demolition of post-tensioned concrete bridges” in 1994.
Presented lectures, training courses and full seminars on demolition procedures, specifications, method statements, risk assessments and health & safety plans throughout the UK, Europe, Malaysia, Singapore and Hong Kong.
Dr Susanné Buchner, BSc, PhD, CEng, MICE, FIDE
Founding Member of “Demolition and Recycling Research Unit” at Surrey University in 1983. Awarded PhD in 1989 for research on monitoring of full-scale structures, measurement of prestress losses and instrumentation of prestressed concrete structures during demolition. Worked in conjunction with Dr Lindsell on all demolition projects from 1983 to present time.
Joint author of guidance documents for the demolition of prestressed concrete structures in the UK, Europe and Singapore. Presented numerous lectures and papers on demolition topics at seminars and conferences throughout the UK and Europe.
SELECTED PUBLICATIONS: Structural Demolition & Bridge Replacement
1. Lindsell P. "Demolition of Post-tensioned Concrete". Concrete, Vol. 9, No. 1, January 1975, pp 22-25.
2. Buchner SH and Lindsell P. "Prestressed Concrete Beams: Controlled demolition and prestress loss assessment". CIRIA Technical Note 129, London, 1987.
3. Price WIJ, Lindsell P and Buchner SH. "Monitoring of a Post-tensioned Bridge during Demolition". IABSE Colloquium - Monitoring of Large Structures and Assessment of their Safety. IABSE Report, Vol. 56, Bergamo, October 1987, pp 357-365.
4. Buchner SH and Lindsell P. "Controlled Demolition of Prestressed Concrete Structures". Second RILEM Symposium on Demolition and Recycling of Concrete, Tokyo, November 1988, pp 358-367.
5. Lindsell P. "Demolition and Removal of Existing Prestressed Concrete Structures". Conf. on Bridge Modifications - Wider and Longer. Institution of Civil Engineers, London, March 1994.
6. Buchner SH. "Dismantling of Complex Structures". Seminar on Demolition and the CDM Regulations, Institute of Demolition Engineers, Leeds, September 1994.
7. Lindsell P. "Demolition Procedures". Seminar on Modern Demolition and Explosives, Institute of Demolition Engineers and Institute of Explosives Engineers, New College, Oxford, September 1995.
8. Lindsell P. "Demolition of Reinforced and Prestressed Concrete Structures", Hong Kong Construction Association - Demolition Seminar, Kowloon, December 1995.
9. Buchner SH. “Knowing the Site: Principles of Structural Demolition”. Consultation Seminar on BSI Draft Code of Practice on Demolition (BS6187 Revision). Thomas Telford Conferences, September 1997.
10. Buchner SH. “Principal Clauses in New Code, BS6187”. Peter Lindsell & Associates Seminar on Demolition and Dismantling, New College, Oxford, September 1998.
11. Lindsell P. “Implementing BS6187 – A Consultant’s Perspective”. Peter Lindsell & Associates Seminar on Demolition and Dismantling, New College, Oxford, September 1998.
12. Lindsell P and Hatt WJ. “Explosive Removal of a Continuous Post-tensioned Bridge”. Peter Lindsell & Associates Seminar on Demolition and Dismantling, New College, Oxford, September 1998.
BRIDGE INVESTIGATIONS
Peter Lindsell & Associates have experience of bridge design, construction, maintenance, repair, strengthening and demolition extending back more than 30 years. Special inspections and detailed structural investigations of more than 50 bridges have been undertaken since 1994.
BRIDGE EXPERTISE:-
Dr Peter Lindsell, MA(Oxon), PhD, CEng, MICE, MIStructE, MIHT, MEWI, FIDE
Commenced bridge design experience with Hampshire CC in 1967 working on r.c. and post-tensioned concrete bridges for the Basingstoke Ring Road and M3 motorway. Gained experience of bridge construction on Andover By-pass and 28 bridges on the M3 motorway during 1969 to 1971. Returned to bridge design for the next three years working on reinforced, prestressed concrete, steel and composite forms of construction for the M27, A3(M) motorways and county roads.
Developed undergraduate courses on the design and construction of bridges at Salford University from 1974-79. Initiated research programme based upon model testing of various bridge abutment designs in conjunction with Hampshire Sub-unit of S.E. Road Construction Unit, leading to PhD degree in 1982. Transferred to Surrey University and became Course Director of the MSc in Bridge Engineering for a period of nine years. Established research team investigating post-tensioned concrete structures during demolition and undertook detailed instrumentation and monitoring of two spill-through bridge abutments on the M25 motorway over a period of 7 years. Continued developing in situ stress measurement techniques at Oxford University and applied techniques to several post-tensioned box girder bridges to determine the residual levels of prestress after 30 years in service. Commenced detailed investigations, structural assessment, load testing and repair of bridges on a full-time basis in 1989. Responsible for comprehensive structural investigations on more than 50 bridges and load testing over 120 bridge spans during the last 10 years.
Responsible for drafting the Department of Transport Advice Note BA50/93 on “Special Inspections for Post-tensioned Concrete Bridges”, TRL research reports on “Measurement of Prestress Losses”, DOT research reports on “Feasibility of Strengthening Post-tensioned Concrete Bridges” and “Design for Demolition of Post-tensioned Concrete Bridges”, “The Role of Load Testing in the Assessment and Repair of Bridges” and “Developments in Prestressed Concrete Structures”. Presented over 150 lectures on bridge inspection and maintenance, structural testing, assessment repair, strengthening and demolition of bridges throughout the UK, Europe and the Far East.
Dr Susanné Buchner, BSc, PhD, CEng, MICE, FIDE
Selected the bridge design option in Final Year at Surrey University and commenced research studies on the bridge abutment monitoring programme on the M25 motorway. Undertook six years of research testing in the laboratory, on the Channel Tunnel Linings and numerous prestressed concrete bridges during the development of in situ stress measurement techniques for concrete structures. Awarded PhD degree in 1989 for thesis on “Full-scale Testing of Prestressed Concrete Structures”.
Commenced consulting career in 1988, working on structural assessment, analysis, stress measurements, load testing and maintenance of bridges. Undertaken several hundred stress measurements on bridge structures, investigated and load tested over 100 bridge spans over the last 12 years.
Joint author of draft BA50/93 on “Special Inspections for Post-tensioned Concrete Bridges”, DOT research report on “Feasibility of Strengthening Post-tensioned Concrete Bridges” and TRL research reports on “Measurement of Prestress Losses”.
Published more than 40 papers on the assessment, testing, repair, strengthening and demolition of bridges and presented numerous lectures on these topics at Universities, seminars and international conferences.
SELECTED PUBLICATIONS: Structural Assessment and Repair
1. Lindsell P and Buchner SH. “Losses of Prestress in Prestressed Concrete Bridges”. Part 1: Measurements of Prestressed Losses – Part 2: Additional Sources of Prestressed Losses. Report for TRRL, 1989.
2. Lindsell P. “Inspection, Assessment, Repair and Maintenance of Concrete Bridges”. Seminar on Management of Bridges, University of Malaysia, Kuala Lumpur, March 1991.
3. Lindsell P and Buchner SH. “Appraisal and Strengthening of Post-tensioned Bridges”. Proc. of 5th Int. Conf. on Structural Faults and Repair – Extending the Life of Bridges. University of Edinburgh, June 1993, Vol 1, pp 273-278.
4. Lindsell P, Buchner SH and Mehrkar-Asl S. “The Assessment of Segmental Concrete Bridges”. Proc. of 2nd Int. Conf. on Bridge Management – Inspection, Maintenance, Assessment and Repair. University of Surrey, April 1993, pp 690-699.
5. Lindsell P and Swift RJR. “Repairs to masonry structures”. Proc. of 5th Int. Conf. on Structural Faults and Repair – Extending the Life of Civil and Building Structures. University of Edinburgh, June 1993, Vol. 2, pp 393-395.
6. Lindsell P. “Special Inspections – Quantifying the Risks”. Peter Lindsell & Associates Seminar on Post-tensioned Concrete Bridges – Assessing the Risks, New College, Oxford, January 1995.
7. Buchner SH. “Structural Significance of Broken Tendons”. Peter Lindsell & Associates Seminar on Post-tensioned Concrete Bridges – Assessing the Risks, New College, Oxford, January 1995.
8. Lindsell P. “Appraisal of Defects and Remedial Measures”. Seminar on “Recent Developments in the Technology and Management of Concrete Structures”. Hong Kong Government – Standing Committee on Concrete Technology. Hong Kong, December 1995, pp 16-22.
9. Lindsell P. “A Survey of 80 Bridges”. Peter Lindsell & Associates Seminar on The Role of Load Testing in the Assessment and Repair of Bridges, New College, Oxford, April 1997.
10. Lindsell P. “Segmental Construction – Assessment of Structural Behaviour”. Peter Lindsell & Associates Seminar on Developments in Prestressed Concrete Structures, New College, Oxford, September 1998.
11. Buchner SH. “Large Span Structures – Maintaining the Prestress”. Peter Lindsell & Associates Seminar on Developments in Prestressed Concrete Structures, New College, Oxford, September 1998.
12. Lindsell P. “Durability Aspects – The Case for Re-grouting Existing Structures”. Peter Lindsell & Associates Seminar on Developments in Prestressed Concrete Structures, New College, Oxford, September 1998.
Curriculum Vitae
Principal: Dr Peter Lindsell
Associates:
Dr Susanné Buchner
Mrs Julie King
DR PETER LINDSELL
Date of Birth: 13.1.46
Education: 1957-64 Wellingborough Grammar School, Northants
Head Boy 1963-64.
1964-67 Wadham College, Oxford.
Academic Qualifications/Distinctions:
June 1967 BA (Oxon) - 1st Class Honours in Engineering Science.
May 1982 PhD (Salford) - Model Analysis of Bridge Abutments.
March 1986 Man of Year Award – National Federation of Demolition Contractors.
October 1987 – Tutorial Fellowship in Engineering, New College, Oxford.
November 1988 – President of the Institute of Demolition Engineers.
November 2003 – Honorary Fellowship of the Institute of Demolition Engineers.
Professional Qualifications:
July 1971 Member of the Institution of Civil Engineers.
April 1972 Member of the Institution of Highways and Transportation.
October 1973 Member of the Institution of Structural Engineers.
November 1981 Fellow of the Institute of Demolition Engineers.
July 1997 Member of the Expert Witness Institute
Committees
1982-1996 Institute of Demolition Engineers: Member of Council. Prepared guidance notes on the "Demolition of Prestressed Concrete" in conjunction with the HSE and published by HMSO as a national guidance document.
1982-1985 CIRIA: Research into Demolition of Structures. Produced joint report on "Prestressed Losses in Full-Scale Structures", based upon monitoring during demolition.
1982-1993 RILEM: Produced recommendations for the "Demolition of Prestressed Concrete Structures".
1989-1992 EDA: European Committee on Recycling of Demolition Debris.
1990-1991 UK Government Steering Group on the Uses and Specifications for Recycled Aggregates.
1990-1991 CIDB Singapore: Demolition and Structural Alterations of Prestressed Concrete Structures.
1993-1994 National Steering Committee - Bridge Load Testing.
1995-1996 Secretary of the Institute of Demolition Engineers.
1998-1999 CIRIA: Steering Group on Waste Reduction, Re-use and Recycling in Construction.
Career:
1993-date Principal, Peter Lindsell & Associates
Established independent consultancy offering specialist services in five principal areas; forensic engineering, load testing, structural demolition, bridge investigations and nuclear structures. Lectured extensively and organized numerous seminars and training courses on the load testing of bridges, appraisal, repair and strengthening of post-tensioned concrete structures and the demolition of complex structures throughout the UK and the Far East.
Acted as specialist consultant for the Special Inspection of more than 40 post-tensioned concrete bridges affected by partial grouting and chloride ingress. Undertook live load tests and in situ stress measurements on more than 70 structures and bridge decks. Drafted initial research study and framework for National Guidelines on Load Testing of Bridges. Responsible for structural and material investigations of 1km concrete viaduct across River Indus in Pakistan, 12 concrete rigid frame river bridges in Greece and an historic UK concrete viaduct across a tidal river.
Acted as specialist demolition consultant to demolition contractors, local authorities, Department of Transport and Nuclear Authorities on complex demolition and decommissioning projects. Prepared research report for Department of Transport on the “Design for demolition of post-tensioned concrete bridges”, aimed at easing problems during widening and lengthening bridges in the future. Responsible for structural safety during recovery by Search & Rescue teams and forensic search of fire damaged warehouse.
Founding member of Expert Witness Institute in 1997. Prepared numerous expert witness reports and presented oral evidence at Public Inquiries and Court cases involving structural collapses, demolition accidents, road and bridge maintenance.
1989-1993 Partner/Director, Gifford and Partners/Gifford and Partners International Ltd.
Partner in charge of Special Studies Section. Responsible for structural assessment, full-scale testing, strengthening work and concrete repair systems, ASR studies, demolition and recycling, structural instrumentation, computer development and research studies. Developed repair techniques for concrete bridges affected by road salts and marine environments.
Undertook in situ stress measurements and load tests on over 60 bridge spans. Prepared research reports for Transport Research Laboratory on "Measurements of Prestress Losses" and "Additional Sources of Prestress Losses" in post-tensioned concrete bridges. Drafted Department of Transport Advice Note on "Special Inspections for Post-tensioned Concrete Bridges" BA50/93 and DOT research report on "Feasibility of Strengthening Post-tensioned Concrete Bridges". Prepared National Guidelines for Singapore on "Demolition and Structural Alterations of Prestressed Concrete Structures".
Presented over 100 lectures on bridge inspection and maintenance, structural testing, assessment, repair, strengthening, demolition and recycling throughout UK, Europe, Malaysia and Singapore.
1987-1988 Lecturer in Concrete Design, Oxford University
Tutorial Fellow at New College, Oxford
(a) Undergraduate Teaching
Concrete materials, highway and bridge design. Structural mechanics and mathematics.
(b) Post-graduate Research
In situ stress measurements in concrete structures. Recycling of demolition debris.
(c) Consultancy
In situ stress measurements and post-tensioned concrete demolition projects.
1979-87 Lecturer in Structural Design, Department of Civil Engineering, Surrey University
January 1982 - Course Organiser MSc in Bridge Engineering
October 1984 - Director, Demolition and Recycling Research Unit
April 1986 - Senior Lecturer in Structural Design
(a) Undergraduate Teaching
Bridge design, highway design and surveying.
(b) Post-graduate Teaching
MSc Course in Bridge Engineering - Concrete Bridge Design.
- Inspection and Maintenance of Bridges.
MSc Course in Structural Engineering - Prestressed Concrete Design.
(c) Post-graduate Research
Monitoring of full-scale concrete structures. Measurement of prestress losses and instrumentation of prestressed structures during demolition. Developed in situ concrete stress measurement techniques. Applications included major box girder bridge and Channel Tunnel linings.
(d) Consultancy
Bridge design, structural instrumentation, post-tensioned concrete demolition projects, in situ stress measurements and structural testing. Prepared UK and European guidance document for post-tensioned concrete demolition. Advised Hong Kong Government on the demolition of post-tensioned bridges.
1974-1979 Lecturer in Civil Engineering, Salford University
(a) Undergraduate Teaching
Bridge Design, Highway Design, Civil Engineering Construction, Surveying and Hydraulics.
(b) Post-graduate Teaching
MSc courses in Highway Engineering and Highway and Transportation Planning:
Bridge Design Principles. Geometric Design and Computer Aided Design of Highways.
(c) Post-graduate Research
Initiated research into bridge abutment design in collaboration with the South-Eastern Road Construction Unit and the Department of Transport. Developed the use of small scale concrete models to examine the structural behaviour of abutments with cantilever wing walls.
(d) Consultancy
Traffic engineering and post-tensioned concrete structures.
1972-1974 Senior Bridge Engineer, Derbyshire County Council
Designs in reinforced and prestressed concrete, steel and composite forms of construction. Maintenance and reconstruction of County bridges by direct labour.
1971-1972 Bridge Design Engineer, S.E. Road Construction Unit
Design of reinforced and post-tensioned concrete bridges for the M27 and A3(M) motorways near Portsmouth. Two through-girder post-tensioned bridges designed for Bursledon Brickworks access across the M27. The main girders have clear spans exceeding 40m and each contain over 2,500 tons of prestress.
1969-1971 Assistant Resident Engineer (Bridges), S.E. Road Construction Unit
Supervision of 28 bridges on the M3 motorway from Basingstoke to the Hampshire/Surrey border. The bridges were built in reinforced concrete, prestressed concrete and steel/concrete composite forms of construction. Nine 3-span continuous post-tensioned decks were subjected to extensive remedial works and selective demolition due to faulty beam manufacture. This project was the first major demolition of continuous post-tensioned concrete structures.
1967-1969 Assistant Engineer, Hampshire County Council
Bridge Design
M3 motorway, Basingstoke to Frimley and Basingstoke Ring Road. Continuous R.C. and post-tensioned concrete bridge decks.
Highway Design
A3(M) motorway, Horndean to Bedhampton.
Traffic and Forward Planning
M3 motorway, Basingstoke to Southampton.
Site Supervision
Andover By-pass. Supervision of road and bridge construction.
Publications
Over 70 publications relating to:
· Assessment and strengthening of prestressed concrete bridges.
· Measurements of concrete stresses in existing structures.
· Monitoring and load testing of full-scale structures.
· Design and behaviour of bridge abutments.
· Recycling of construction materials.
· Demolition of prestressed concrete structures.
DR SUSANNÉ HERTA BUCHNER
Date of Birth: 13.3.61
Education:
1972-77 Worthing High School for Girls, Worthing.
1977-79 Worthing College of Technology, Worthing.
1979-83 Surrey University.
Academic Qualifications:
June 1983 BSc - 2.1 Honours in Civil Engineering. Awarded final year WJ Peck Prize for Endeavour, 1983.
December 1989 PhD (Surrey) - Full-Scale Testing of Prestressed Concrete Structures.
Professional Qualifications:
December 1991 Member of the Institution of Civil Engineers.
November 1992 Fellow of the Institute of Demolition Engineers.
Committees:
1983-1985 CIRIA: Research into Demolition of Structures. Produced joint report on "Prestressed Losses in Full-Scale Structures", based upon monitoring during demolition.
1989-1994 RILEM: Committee on Demolition and Recycling. Joint author of book on disaster relief following natural and manmade disasters.
1989-1992 EDA: European Committee on Recycling of Demolition Debris. Joint author of document produced for the EU on "Recycling of Demolition and Construction Waste in Europe"
1990-date Institute of Demolition Engineers: Member of Council.
1990-1991 CIDB Singapore: Demolition and Structural Alterations of Prestressed Concrete Structures.
1992-date BSI: Committee Member representing the Institution of Civil Engineers for revision of BS6187: 1982: Code of Practice for Demolition.
Career:
1994-date Associate, Peter Lindsell & Associates
Acted as specialist consultant undertaking Special Inspections of numerous post-tensioned concrete bridges, including motorway bridges and several major viaducts. Undertook full-scale live load testing on a variety of bridge structures including multi-span post-tensioned concrete viaducts, cast-iron/riveted steel composite decks, historic structures including Hammersmith Bridge, a "Hennebique" reinforced concrete multi-span viaduct and a buried reinforced concrete arch. Responsible for in situ stress measurements and risk assessments on numerous post-tensioned structures and composite bridge decks. Drafted initial research study for National Guidelines on Load Testing of Bridges.
Planning Supervisor and specialist consultant on numerous demolition projects including several post-tensioned concrete hangers at Heathrow Airport. Preparation of expert witness reports, including a fatal accident inquiry into collapse of a roof structure during demolition. Acted as consultant to demolition contractors and Local Authorities on numerous complex structural demolition projects. Devised demolition method statements for a number of prestressed concrete structures including a major bridge affected by ASR. Acted as Institution of Civil Engineer's representative on Committee redrafting BS6187: Code of Practice for Demolition.
Presented post-graduate lectures on structural testing. Also presented papers at Seminars on "Bridge Assessment, Management and Design", "Risk Assessment for Post-tensioned Concrete Bridges" and "Demolition and the CDM Regulations", “Developments in Prestressed Concrete Structures” and “Demolition & Dismantling”.
1993-1994 Principal Engineer, Gifford and Partners/Gifford and Partners International Ltd.
Responsible for the management of projects involving in situ stress assessments, structural assessment, full-scale testing, strengthening work and repair systems, ASR studies, demolition and recycling, structural instrumentation and research studies. Responsible for full-scale load tests on four cast iron/riveted steel composite bridge decks. Also responsible for in situ stress measurements on trunk road bridge and load test on motorway overbridge.
1990-1993 Senior Engineer, Gifford and Partners/Gifford and Partners International Ltd.
Undertook in situ stress measurements and load tests on over 20 bridge spans including stress measurements on the Medway Bridge. Joint author of Department of Transport Advice Note on "Special Inspections for Post-tensioned Concrete Bridges" BA50/93 and DOT research report on "Feasibility of Strengthening Post-tensioned Concrete Bridges".
Presented a number of lectures on structural testing, assessment, demolition and recycling in UK and Europe, including invited lecture to German Demolition Association. Actively involved in the promotion of Gifford and Partners in Europe, visiting Germany, Hungary, Czechoslovakia, The Netherlands, Finland and Denmark.
1988-1990 Research Engineer, Gifford and Partners/Gifford and Partners International Ltd.
Undertook in situ stress measurements and load tests on over 40 bridge spans, including Angel Road Bridge, Enfield, and Langstone Harbour Bridge, Havant. Also responsible for stress measurements in Tanagro IIIrd Bridge, Polla, Italy. Involved in assessment of ASR affected structures in the South-West. Responsible for method development and monitoring for partial demolition of hyperbolic-paraboloid thin shell roof structure.
Joint author of research reports for Transport Research Laboratory on "Measurements of Prestress Losses" and "Additional Sources of Prestress Losses" in post-tensioned concrete bridges. Also jointly prepared national guidelines for Singapore on "Demolition and Structural Alterations of Prestressed Concrete Structures". Presented a number of lectures on structural testing, assessment, demolition and recycling in UK and Europe.
1987-1988 Research Assistant, Engineering Science Department, University of Oxford.
Tutor, St. Hilda's College, Oxford
Continued post-graduate research developing techniques for in situ stress measurements and investigated long-term losses of prestress. Provided in situ stress measurement service to industry. Taught undergraduate tutorial classes in structural mechanics, structures, concrete materials and soil mechanics.
1983-88 Research Officer/ Manager Demolition and Recycling Research Unit, Department of Civil Engineering, Surrey University
Developed in situ concrete stress measurement techniques. Applications included major box girder bridge and Channel Tunnel linings. Involved in monitoring of full-scale concrete structures, measurement of prestress losses and instrumentation of prestressed structures during demolition. Involved in safety monitoring during demolition of major 3-cell box girder bridge. Awarded Institution of Structural Engineers' Model Analysis Group Prize 1986.
1981-1982 Junior Engineer, Gillis-Mason Civil Engineering Co (PTY) Ltd, Johannesburg, South Africa
Batching plant supervisor and concrete laboratory supervisor for Lethabo Power Station construction. Also in engineering services, involved in tendering for new power stations. Designed three water retaining structures for Electricity Supply Commission (ESCOM).
Publications:
Over 30 publications relating to:
DAVID LINDSELL
Date of Birth: 30.10.71
Education: 1987-1989 Lord Williams Thame
1989-1991 Brockenhurst College
1991-1995 Sparsholt Agricultural College
1995-1996 Glasgow University
Current Studies: Undergraduate Engineering Student at the Open University. Over the past 15 years, gained a range of experience in the structural assessment and monitoring of various structures in steel, cast iron and concrete. Particular experience of specialist in situ strain gauge measurement techniques and their application to post-tensioned concrete bridges. Currently focusing on the provision of specialist engineering support within the demolition industry, with a view to seeking election to the Institute of Demolition Engineers and Institute of Occupational Safety and Health.
Academic Qualifications:
1996 Bachelor of Technology - Food Production and Land Use (Glasgow)
1995 Higher National Diploma - Agricultural Management (Distinction)
Professional:
Institute of Occupational Safety and Health - Affiliate Member
Career:
1996-date Associate, Peter Lindsell & Associates
Demolition Experience
Current work involves the development of supporting documentation for feasibility studies and demolition procedures, including the production and revision of health and safety documentation, method statements and risks assessments on a range of deconstruction projects. Recent work in this area has included: -
Previous work has included involvement in live load testing and residual stress measurement of various structures. It has also involved the visual inspection and assessment of structures, including Special Inspections of Post-tensioned Bridges to BA50/93. This featured involvement in the installation of monitoring systems for conducting live load testing of bridges, floor slabs and buildings including:
B&Q plc December 2000 – September 2004
Team Leader October 1998 – January 2000
After completing a fast track development programme, became stock control manager in a large retail outlet with a turnover of £50m. Responsible for the successful trial implementation of a of a new fully automated stock replenishment system (SAP Replenishment). Surpassed key performance indicators, through the effective management of a team of 14 people, whilst leasing with other departments, suppliers and stores to ensure the maintenance and of database integrity and accuracy. These performance indicators measured the timely completion and accuracy of various reports, to ensure optimum efficiency of stock replenishment. Other requirements of the role included responsibility for the operation of the store as Duty Manager and Fire Safety Officer for the building.
J D WETHERSPOONS plc January 2000 - December 2000
January 1998 - October 1998
Responsible for all aspects of the daily management of licensed retail outlets and opening new sites. Work involved the recruitment and training of new staff teams for both kitchen and front of house and the establishment of supplier accounts.