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The presentation of existing architectural objects is most often done because of its historic significance or design values. Contemporary methods of presentation imply the use of digital perspective images, videos, virtual reality or augmented reality. Augmented reality (AR) is computer technology where the perception of the user is enhanced by the seamless blending between real environment and computer-generated virtual objects coexisting in the same space. In this paper a case study of AR use for existing architectural object presentation for “Ada Bridge” across Sava River in Belgrade is presented

This paper presents the design process of a motorcycle with a street-style chassis. Motorcycle design can be described as activities that define the appearance, function and engineering of motorcycles. The design process presented is consisted of several steps like analysis of the existing motorcycles in the category, analysis of the engineering design of the structures, ergonomics and design of the riding position, creating a 3D model and rendering. The main goal of the paper is to design a new chassis of a motorcycle in the street-style in compliance with the ergonomic and engineering requests. This paper aims to discuss the specific features, benefits, and precautions when using design optimization to develop a specific project. After selecting the optimized design of the product, a 3D model has been created to visualize the final result. The 3D model presents the selected geometry and materials selection. Using photo-realistic rendering the final model has been presented to provide the decision makers with the ability to visualize the product in order to analyze if the design is satisfactory.