Best practice of crane support structures design : an expert survey

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dc.contributor.advisor Dunaiski, P. E.
dc.contributor.author Thompson, Geoffrey en_ZA
dc.contributor.other University of Stellenbosch. Faculty of Engineering. Dept. of Civil Engineering.
dc.date.accessioned 2008-04-14T10:14:46Z en_ZA
dc.date.accessioned 2010-06-01T08:36:00Z
dc.date.available 2008-04-14T10:14:46Z en_ZA
dc.date.available 2010-06-01T08:36:00Z
dc.date.issued 2007-12 en_ZA
dc.identifier.uri http://hdl.handle.net/10019.1/1904
dc.description Thesis (MScEng (Civil Engineering))--University of Stellenbosch, 2007.
dc.description.abstract Research on cranes and crane support structures has been completed at Stellenbosch University’s Structural Division. In order to link the research already completed with that which is practically relevant, an industry related expert survey was proposed. Consequently, the research title is “Best Practice of Crane Support Structures Design – An Expert Survey”. The primary objective of the study is to complete research, which can be used at a later stage to compile a “best practice” guideline for support structures design. The expert survey allows practical experience and opinion to be gathered from experts. The primary drawback being the uncertainty involved in such opinionated research material. For this reason an attempt is made in the thesis to apply a scientific approach, in order to attain rationally defendable results. The survey was conducted using interviews with experienced crane support structure designers and crane manufacturers in South Africa. The experts were then rated according to their answers to seeded questions, the number of colleague recommendations they each received and the years of experience each expert has. The expert opinion was subsequently combined using the expert ratings as weights. To further improve the scientific rationale behind the results, several of the topics mentioned by the experts were verified using related literature - thereby validating the use of the combined expert opinion for this research. The results obtained from the survey and verification process are regarded as useful to the objectives of the study. Information concerning pre-design specifications, loads and actions, structural analysis, design, design details and fatigue was compiled. The direct results are tabulated in an appendix and commentary, based on the expert opinions, is provided. A failure investigation was also completed with less success than initially intended. This was due, in part, to confidentiality issues and a lack of failure information easily accessible to the experts. For this reason the results of the failure investigation focuses more on various failure mechanisms. The success of the survey indicates that expert opinion is a useful tool for research. Furthermore, the minor differences in expert opinion, when compared to information obtained from crane support structure literature, indicates that the expertise in the South African crane support structure design is at an international standard. en_ZA
dc.format.extent 4999849 bytes en_ZA
dc.format.mimetype application/pdf en_ZA
dc.language.iso en en_ZA
dc.publisher Stellenbosch : University of Stellenbosch
dc.subject Mobile cranes en_ZA
dc.subject Dissertations -- Civil engineering en_ZA
dc.subject Theses -- Civil engineering en_ZA
dc.subject.other Civil engineering en_ZA
dc.title Best practice of crane support structures design : an expert survey en_ZA
dc.type Thesis en_ZA
dc.rights.holder University of Stellenbosch


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