Ivan Čobal created three scratch pieces for the Secondary School of Electrical Engineering and Computer Science. The concave walls along the hallways on the ground, first and second floors are covered by black terrazzo into which he carved drawings in light brown. Disused water fountains are incorporated into the lower sections of the walls. The drawings depict motifs that recall various production processes closely linked to the original curriculum of the school. This was conceived more broadly and included electrical and civil engineering, and engineering textiles. On the wall on the second floor is a composition depicting two caryatides, a factory and a truck; they were representative of the engineering department. (Nejc Lazar, in the framework of the Creative Path to Knowledge project, Virtual guide; The investment is co-financed by the Republic of Slovenia and the European Union from the European Social Fund)