Adding optimisation methods enforces engineering design and the influence of these methods cannot be over-emphasised. The resulting solutions provide an efficient way of dealing with some of the most difficult challenges in engineering practice today. This book contains the papers presented at OPTI 2007, the tenth international conference in the series of scientific and technical meetings dedicated to Optimum Design in Engineering. The papers published place particular emphasis on computational methods to model, construct and manage new structural solutions and material types. The integration of their design together with optimisation technologies is nowadays evident in all aspects of industry and research. A wide series of topics are covered, namely: algorithmic and topology optimisation, shape optimisation, applications in construction engineering, applications in mechanical and aircraft engineering and applications to process optimisation.