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Building failure case study
The document describes an analysis of failures in a building project using a bow-tie analysis method. The analysis identified several causes for delays and complications in the project, including poor site preparation management, an incompetent project manager, unexpected pollution in the ground requiring more classification, and improperly sequenced work like laying crane tracks before piles were cut. The bow-tie diagrams show how these initial failures and delays led to downstream effects throughout the construction process, compounding issues and further delays.
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Building failure case study
- 1. Source-Kirsten Jørgensen,TheTechnical Universityof Denmark, Lyngby, DK (email kirj@man.dtu.dk ) 020 ANALYSIS OF FAILURE IN A BUILDING PROJECT
- 2. Science Art ReligionPolitics Scholarly Articles For Mathematics and Productivity http://www.twitlonger.com/show/n_1sp9pjo?new_post=true MICROSOFT OneDrive PPT’s PDF’s BOOK LESSONS Dr f Dejahang BSc CEng, BSc (Hons) Construction Mgmt, MSc, PhD
- 3. THE BOW TIE– AN ANALYTICAL METHOD
- 4. THE BOW TIE– AN ANALYTICAL METHOD
- 5. The bow-tie analysisof failure (ceasing to function)
- 6. ANALYSIS OF FAILUREIN A BUILDING PROJECT
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- 9. ANALYSIS OF FAILUREIN A BUILDING PROJECT
- 10. ANALYSIS OF FAILUREIN A BUILDING PROJECT
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- 16. The bow-tie analysisof failure (ceasing to function)
- 17. Poor management of thepreparation of thesitefor construction Wrongman set to managethework Theworknot checked byaproject leader Thesizeand extent of thework underestimated Slow handling of the casebytheauthorities Delaysin the start of the construction Chose10gradesof pollution classification, which takestime Thetrackforthe cranewaslaid beforethepiles werecut to theright heights Complicated methodsforthe excavation Theuseof timeand resourcesnot optimal Focuson cost-benefit optimisationof own task Poor planning of thesequenceof theprocess, especiallyfor bungsand piles Slow decision- making when unforeseen problemsarise Too few employeesforthe job Poorfocuson deadlines Complication in thepilecutsand economiclosses 1 Figure 3
- 18. ANALYSIS OF FAILUREIN A BUILDING PROJECT
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- 21. ANALYSIS OF FAILUREIN A BUILDING PROJECT Figure 5 illustrates the bow-tie analysis of another consequence of the incompetent management the bungs were driven in too early in the process, which had serious consequences for later stages. This shows that the reason for driving the bungs early was quite reasonable – but also that there was no adequate process analysis.
- 22. ANALYSIS OF FAILUREIN A BUILDING PROJECT Tooearlydrivingthe bungs Itisbesttodrivethe bungsinbeforethe excavationprocess Theentrepreneurhad freecapacityof manpoweratanearly stage Theconsequenceswere notevaluated Theexcavationwent ontobemost complicated Theearly placement ofthebungs obstructedaccessfor cuttingthepiles Delayedthe preparationof thesite Thisforcedthe entrepreneursto usean inconvenient methodfor cuttingthepiles 14 Figure 5
- 23. ANALYSIS OF FAILUREIN A BUILDING PROJECT Figure 6 illustrates that pile driving came too late in the process, with the result that other process stages, e.g. laying the crane tracks, occurred before the piles were cut, with consequences for the pile cutting.
- 24. ANALYSIS OF FAILUREIN A BUILDING PROJECT Delayed drivingin thepiles Thepreparationof the groundwasmore complicatedthan expected Poormanagementof thepreparationofthe ground Thetrackstothecrane couldn´t waitandwere laidbeforethepiles hadbeencut Thisdelayedthestart oftheconstruction 15 Figure6
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- 28. ANALYSIS OF FAILUREIN A BUILDING PROJECT
- 29. B. Overview ofmutual relationships between critical events Time delaying Cost consuming Resource requiring The client The design process The foundation The shell Ext. accommodation Int. accommodation Delivery 4.Unrealistic timeframe for the delivery 2.Overload of the site manager for the shell 1.Poor manage- ment of the preparation of the site for constrution 3.Acceptance of additional choice at the wrong moment 5. Lack ofironin filigree slab 6.Filigree slab are thicker than on drawrings 10.Instalations overlapping 11.Outlet put in same place as a pile 12. Achitectural ironmongery problem in dobbeltwalls 13. Slow excavation and preparation ofthe ground 14.Too early driving in of the bungs 15. Delayed drivingin of the piles 16. Broken piles 17. Damage tothe iron in the piles 18.Excavationfilled with water 19. Employment problems 20. Lacks ofprops up to filigree elements 21.Poor erectionof concrete elements 22. Lopsidedness of walls 23.The width of the filigree elements too small 24. Wrong placement of wall in the entrance 25. Slow and poor finish 26. Poor mainte- nance, cleaning 27. Delivery failure of concrete elements 28. Failure in outlet at the cubicle 29. Wrong chock up at the cubicle 44.Water in the corrugated pipes 45.Uneven and slope of surface 46. Too small room for batten 47. Wrong masking- off in wall 48. Few socket outlet in rooms 49. Damage of wall in cubicle 50. Diffuculties in mounting of kitchin elements 51. The crew for painting too small 52. A simple accident 53. Oil pollution 54. Late delivery of floor materials 55. Defects at the time for delivery of the building 7. Lacks in the design of elect. installations- 30.Poor coordina- tion of agreements 31.The building can´t be cloosed 32.Placementof the crane track 33. Damage to windows 34. Water intrusion from the roof 37. No space for window 36.Humidity of the plaster 35.Many cut outs are needed 38. Lacks ofplates 39.Isolations prob. 41. Water inpenth. 42. Damagedpipe 43.Late deliveries 40. The plates on the roof too high
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- 35. ANALYSIS OF FAILUREIN A BUILDING PROJECT It was also possible to clarify the link between deficient electrical planning and a number of critical events later in the construction phase during the internal fitting out.
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