Résumé
Beyond the classical dispute between architects and engineers, it is a matter of fact that art and engineering are not only compatible, but also for some cases indissociable. This communication aims to contribute to the debate. In the first part the experience of artists is exemplified in terms of influence on structural engineering : Pevsner and Snelson opened the way to complex surfaces and innovative structural composition. Following David P. Billington proposal for a so called "Structural Art", some few examples are described enhancing the symbolic dimension of realizations, whose morphology reflects artistic processes. Some explanations provided by cognitive sciences help to understand the mental process of designers and the required conditions for a creative process. Historic examples of artistic movements like "Constructivism", "Bauhaus" and the experiment of "Black Mountain College" illustrate the benefice of crossing experiences of designers, whatever can be their field.