STRUCTURE: Welded T-shaped metal strips to form ribs with variable heights. Square tube supporting the strips on the ribs, in ST-52 grade steel. These metal parts are welded together and then hot-galvanised by immersion. Steel strips of the same quality screwed to the structure with stainless steel square headed screws. FIXATION: The bench is attached to a lateral support by mechanical or chemical plugs, depending on the type of support. NUTS AND BOLTS: In stainless steel.