Assessment Evaluation And Repair Of Concrete Steel And Offshore Structures Pdf

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Worldwide, there are many failures or complete collapses of concrete, steel, and offshore structures. If the reasons behind these failures are known and understand- able, then to avoid such incidents will be much easier. In this book, the defects in project management from the feasibility stage through operation and maintenance will be fully explained. The objective of this book is to provide guidelines for struc- tural engineers to understand the best ways of establishing functional structures that remain durable throughout its lifetime.

With my experience in lecturing many courses worldwide, I have found that the main underlying issues of failure have to do with overconfidence, and every civil or structural engineer considers that the factor of safety covers everything. However, these safety factors have a certain limit in providing the safety of struc- tures. Therefore, it is very important to fully understand the theoretical background behind the factors of safety in different codes and standards.

Therefore, this book covers all the aspects of a project’s life, such as project management pitfalls, design errors, bad materials, construction problems, and operation and maintenance that can cause the structural failure or even collapse. Also this book address the many structural failures of both onshore and offshore structures, and the underlying reasons and mechanisms of the failures will be addressed by case studies with engineering calculations. Due to structural aging, it is mandatory to perform a proper assessment and repair of the existing struc- ture or increase its strength to achieve its full functional use. The traditional and advanced methods of assessment and inspection for concrete and steel structure are presented, along with the best ways to predict the structural lifetime for onshore and offshore structures.

The failure of any structure has a general meaning that it is not doing its function. A simple example is a crack or deterioration that prevents the user from using the structure as he doubts about his safety. The crises in the case of the collapse of the structure are considered to be the complete failure of the structure. All the codes and standards concerning about preventing the collapse of the building are maintained well the structure serviceability within the permissible limit. The failure is happened under main circumstances, but in general in case of occurring in a time period of the structure life there is a maximum load and mini- mum strength happened then the failure will occur.

We find that loads when calculated from codes and standards are taken as one value, but in fact the load is presented by a probability distribution. When cal- culating the member resistance capacity from the code equation, it provides one value. Therefore, our calculation is called a “deterministic calculation,” but in the case of taking every parameter as variable presented by a probability distribution with mean value and coefficient of variation, the member resistance capacity will be presented by a probability distribution and in this case the calculation is called probabilistic calculation.