Constructive solutions for architectural ideas, Julio Martínez Calzón discusses his professional relationship with different architects, duration: 41´ 57´´, master in Spanish and master subtitled in English. Julio Martínez Calzónis a civil engineer, bridge and large structure designer, a lecturer in Mixed Structures at the Polytechnic University of Madrid’s School of Engineering and the author of Puentes, Estructuras, Actitudes (2006).