Structural Demolition
Peter Lindsell & Associates have extensive research and professional 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. Clients range from government departments and nuclear establishments to demolition contractors and international consultants. Individual lectures, training courses, seminars and international conferences have been organised and presented throughout the UK, Europe and the Far East.
Selected Publications
1. Lindsell P. "Repair & Replacement". Seminar on The Real Behaviour of Structures. New College, Oxford. 9 April 2010.
2. Lindsell P. "Demolition with Safety in Mind". Seminar on The Real Behaviour of Structures. New College, Oxford. 9 April 2010.
3. Buchner SH. "Dangers of Hidden Defects during Structural Demolition". Seminar on Forensic Engineering. New College, Oxford. 27 September 2000.
4. Lindsell P. "Essential Information for the Safe Dismantling of Structures". Seminar on Forensic Engineering. New College, Oxford. 27 September 2000.
5. Lindsell P and Hatt M. “Explosive Removal of a Continuous Post-tensioned Bridge”. Seminar on Demolition and Dismantling. New College, Oxford, 23 September 1998.
6. Buchner SH. “Demolition of Complex Structures”. Seminar on Demolition and Dismantling. New College, Oxford, 23 September 1998.
7. 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.
8. Lindsell P. “Demolition and Removal of Existing Prestressed Concrete Structures”. Conference on Bridge Modifications – Wider and Longer. Institution of Civil Engineers, London, March 1994.
9. Buchner SH and Lindsell P. “Prestressed Concrete Beams: Controlled Demolition and Prestress Loss Assessment”. CIRIA Technical Note 129, London, 1987.
10. Lindsell P. “Demolition of Post-tensioned Concrete”. Concrete, Vol. 9, No. 1, January 1975, pp 22-25.
Controlled demolition of Rigid Frame Car Park, strengthened with external, unbonded post-tensioned tendons.
Complex Structures
Peter Lindsell & Associates have advised many local authorities and represented numerous demolition contractors involved in demolition and dismantling of complex industrial and residential structures. Projects have included feasibility studies through to site supervision and planning supervisor duties. The types of structure encountered have included heavy plant in redundant power stations and incinerators, old industrial premises and warehouses, shell roofs, chimney stacks, lift slab structures, multi-storey buildings and car parks and a variety of historic and modern bridges.
Selected Projects
2010 Partial dismantling of Victorian railway viaduct, Lancashire.
2009 Demolition of steel link bridge, Gatwick.
2008 Review of demolition procedures for 27 storey building, London.
2008 Demolition of collapsed lock gates, Shoreham.
2007 Demolition of Victorian subways for Station upgrade, East London.
2006 Explosive demolition of 4-span motorway bridge, Yorkshire.
2005 Explosive demolition of 76m high steel building, Kent.
2004 Demolition of high level steel gantry, Hampshire.
2003 Feasibility study for dismantling electricity sub-station, Nottingham.
2002 Dismantling of series of bridges across entrance to Paddington Station, London
2002 Explosive demolition of concrete water tower, Barnet.
2001 Peer review of decommissioning for nuclear reactor, Harwell.
2001 Explosive demolition of grain silos, Oxfordshire.
2000 Peer review of explosive demolition of concrete chimney, Ipswich.
1999 Peer review of dismantling procedures for multi-span motorway bridge, Leicestershire.
1999 Planning Supervisor for removal of redundant asbestos works, Buckinghamshire.
1999 Planning Supervisor for demolition of multi-storey r.c. car park, Buckinghamshire.
1998 Planning Supervisor for multi-storey lift slab structure, Dorset.
1997 Method statements for structural weakening of steel incinerator plant and r.c. chimney, prior to explosive demolition, Hampshire.
1997 Detailed method statements for demolition of redundant wrought iron railway viaduct, during weekend possession, London.
Explosive demolition of reinforced concrete chimney.
Prestressed Concrete
Peter Lindsell & Associates have been continuously involved in the demolition of prestressed concrete structures and bridges since 1970. A wide range of pretensioned, bonded and unbonded post-tensioned structures have been successfully dismantled during this period. General technical procedures have been developed and formed the basis for HSE guidance notes and National Standards for the UK, Europe and the Far East.
Selected Projects
2009 Demolition methodology for 2-span continuous post-tensioned motorway bridge, Cheshire.
2009 Dismantling post-tensioned railway bridge, Rochdale.
2008 Demolition of external post-tensioned roof beams, lecture theatre, Southampton.
2007 Demolition of 45m span post-tensioned hangar doorway beams, Heathrow.
2006 Partial demolition of unbonded concrete floor slab, London.
2005 Explosive demolition of twin post-tensioned concrete bridges over 4 railway tracks, using water bags and conventional blasting, Yorkshire.
2004 Demolition of precast segmental post-tensioned concrete dockyard sheds, India.
2003 Controlled demolition of 4-span motorway bridge, Lancashire.
2000 Controlled demolition of 3-span motorway bridge, Hampshire.
2000 Controlled demolition of post-tensioned concrete aircraft hangars, Heathrow
1999 Controlled demolition of post-tensioned transfer beams supporting multi-storey offices, Merseyside.
1998 Demolition of external unbonded post-tensioned cables in multi-storey car park, adjacent to overhead electrified railway, East Midlands.
1997 Demolition of multi-span post-tensioned aircraft buildings, London.
1996 Controlled demolition of multi-level post-tensioned footbridge, Hong Kong.
1995 Explosive demolition of 4-span continuous post-tensioned motorway bridge, Berkshire.
Demolition of post-tensioned concrete hangar roof.
Health & Safety
Peter Lindsell & Associates have been closely involved in the development of health & safety procedures and guidance, particularly in relation to the controlled release of prestress in bonded and unbonded post-tensioned structures. Independent reviews and training seminars have been provided for the preparation of pre-tender and construction health & safety plans for conventional demolition projects and nuclear structures undergoing controlled decommissioning and dismantling.
Selected Projects
2010 Control measures to manage risks while dismantling steel building, Heathrow.
2009 Particular risk assessment for precast concrete multi-storey block, Aldershot.
2008 Particular risk assessments for post-tensioned viaducts, Oxford.
2008 Structural safety assessment of concrete basement, Southampton.
2007 Structural safety monitoring for fire damaged steel trusses during search & rescue operations, Stratford.
2006 Review of Planning Supervisor Health & Safety role in collapse of Victorian property during refurbishment work, London.
2006 Safety procedures for safe removal of steel arch roof structure, tied by post-tensioned ground beams, Lancashire.
2005 Health & Safety procedures for working at height on open roof structure, London.
2004 Safety review of explosive demolition of concrete structures at nuclear site, Berkshire.
2003 Temporary works and safety procedures for demolition of mill structure, Lancashire.
2001 Method Statement and Temporary Works for concrete tied arch river bridges, Norfolk.
1999 Preparation of risk assessments and safety procedures for the release of prestress in 45m span post-tensioned box beams, London.
1998 Preparation of detailed safety case for building in nuclear fuel handling area, Scotland.
1998 Preparation of health & safety plan for release of external unbonded post-tensioned cables, Coventry.
1998 Method statement and health & safety aspects for the selective dismantling of a composite trough bridge deck, Bedfordshire.
1997 Health & safety plans and site supervision for demolition of Victorian properties and factory buildings, London.
1996 CDM audit of 15 pre-tender and construction stage health & safety plans prepared by planning supervisors, South-west England.
Explosive demolition of redundant waste incinerator.