Typically, the structures represent about 30% of the cost of a reinforced concrete building. In parallel, recent research on high-strength concrete and its application in structural elements have provided new alternatives for the construction of tall buildings. With that, the engineers have to provide, at the same time, more economical solutions, but with the required safety. So, reliability-based optimization models (RBDO) are an interesting tool for this kind of problem, since their objective is always to seek the best compromise between economy and safety. This book presents a...