03.03.2009 Cologne´s tunnel tube disaster Annual IMIA Conference - Berlin, 14.09.2010 Jens Manderfeld E-TVS Essen Cologne´s tunnel tube disaster ¾ Jens Manderfeld ¾ Degree in Civil Engineering and Business Administration and Engineering ¾ 1993 - 2001 Structural Engineer / Site Manager ¾ 2002 - 2003 Gerling Risk Management Department ¾ 2003 - today HDI-Gerling Claims Management Engineering (CAR / EAR) ¾ Responsible claims manager for the project “Nord-Süd-Stadtbahn Köln” HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -2- Berlin, 14.09.2010 Cologne´s tunnel tube disaster International Engineering market German speaking Eng. market Co-Insurer Lead Insurer Co-Insurer Lead Insurer Claims-dep. Lawyer Loss Adjuster Broker Broker Experts, Experts Lawyer Insured Insured HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -3- Berlin, 14.09.2010 Cologne´s tunnel tube disaster ¾ General information about the project ¾ Track crossover structure (Gleiswechselbauwerk) ¾ Collapse of the archive on March 3rd 2009 ¾ Possible cause of loss ¾ Further site activities ¾ Characteristic of the German CAR Wordings HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -4- Berlin, 14.09.2010 General information about the project Location of the project HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -5- Berlin, 14.09.2010 General information about the project ¾ Length ca. 4 km ¾ 8 underground stations ¾ Max depth: 30 meter ¾ Construction period (scheduled) 2004 – 2010 ¾ Completion expected 2016 ¾ Estimated constr. value / insured sum 630 Mio € ¾ Final constr. costs ? Mio € HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -6- Berlin, 14.09.2010 Track crossover structure (Gleiswechselbauwerk) Topview HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -7- Berlin, 14.09.2010 Track crossover structure Construction sequence 1 +47,80m Water table 1.) Diaphragm walls down to –45m 1 1 +12,80m Water resistant layer (tertiary) HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -8- Berlin, 14.09.2010 Track crossover structure Construction sequence 2 +47,80m Water table 2.) Tunnelling works diameter 7.30m 2 +12,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -9- Berlin, 14.09.2010 Track crossover structure Construction sequence 3 3 +47,80m 3.) Dewatering system 3 +12,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -10- Berlin, 14.09.2010 Track crossover structure Construction sequences 4 - 7 6 +47,80m 5 5 4 +36,00m 4.) Excavation of 12 m 7 5.) Grouted anchor 6.) Temporary steel ceiling 7.) Concrete slab I as final concr. ceiling I +12,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -11- Berlin, 14.09.2010 Track crossover structure Construction sequences 8 - 9 +47,80m +36,00m 8.) Excavation of next 8 6 m +29,95m 9.) Concrete slab II as 9 final concrete ceiling II +12,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -12- Berlin, 14.09.2010 Track crossover structure Construction sequences 10 - 12 +47,80m +36,00m 10.) Excavation of next 8 m +29,95m 11.) Dismantling of 11 tunnel tube in the crossover structure 10 12.) Bottom slab +21,80m 12 +12,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -13- Berlin, 14.09.2010 Track crossover structure Construction sequences 13 - 14 +47,80m 13 +36,00m 13.) Backfilling and 14 asphalt works +29,95m 14.) Final works 14 +21,80m +12,80m Water resistant layer (tertiary) HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen +2,80m -14- Berlin, 14.09.2010 Collapse of the archive on March 3rd 2010 Historical town archive Cologne ¾ Built in 1971 ¾ Largest town archive north of the alps ¾ 30 km storage space ¾ Oldest document dates back to the year 922 ¾ Contents sum insured 60 Mio. € HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -15- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Location of archive and track crossover structure HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -16- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -17- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 3.000m³ of soil (gravel) HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -18- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 3.000m³ of soil (gravel) HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -19- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 3.000m³ of soil (gravel) HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -20- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Demolition rubble in the structure HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -21- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Protection measures for the archive contents HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -22- Berlin, 14.09.2010 Collapse of the town archive on March 3rd 2009 Damaged property +47,80m +36,00m - Temporary steel ceiling - Debris and soil in the structure +29,95m - Cracks in concrete construction - Movement of the structure 3.000m³ - Loosening and loss of the +21,80m surrounding soil - Dewatering system +12,80m Water resistant layer (tertiary) +2,80m HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -23- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss Cause is still under investigation by ¾ The public attorney's office ¾ The independent experts nominated by the court HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -24- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss - Scenario I Scenario I Removal of soil by the dewatering system has caused a local separation HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -25- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss - Scenario II Scenario II Imperfection in the diaphragm wall HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -26- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Possible cause of loss Soil investigation 18.11.2009 HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -27- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Further site activities Next steps: 1.) Temporary structure for the recovery of remaining archives contents 2.) Temporary structure for the inspection of the diaphragm wall 3.) Reinstatement works HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -28- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Characteristic of the German CAR Wordings Insured property in standard German wordings ¾ Construction work ¾ Building materials, prefabricated parts ¾ Temporary structures HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -29- Berlin, 14.09.2010 Cologne´s tunnel tube disaster Characteristic of the German CAR Wordings On application: the surrounding building ground / subsoil up to a first risk sum. Examples for clauses: ¾ Surrounding Building ground / subsoil is insured against all kind of perils ¾ Surrounding Building ground / subsoil is insured only as a result of covered loss ¾ Surrounding Building ground / subsoil is insured only as a result of a loss HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -30- Berlin, 14.09.2010 Cologne´s tunnel tube disaster ¾ The collapse of the archive is not the result of a typical tunnel risk ¾ The collapse of the archive is the result of an excavation pit risk HDI-Gerling Industrie Versicherung AG Jens Manderfeld, E-TVS Essen -31- Berlin, 14.09.2010.