Covering a patio. Problem: Covering an existing outdoor walk area with a tent-like construction which satisfies aesthetic demands but which nevertheless has a high degree of security against escape attempts and escape assistance from outside. Special requirements: Although the existing geometry allowed no freedom for creative design, the requirement was for a construction which was both aesthetic and secure. Also required was simple and speedy erection without interrupting the everyday life of the penitentiary. Geobrugg’s answer: The clear, transparent basic construction with MAXX special mesh permits improved flooding of the inside yard with light. The high cutting resistance guarantees efficient escape protection and a secondary mesh provides full protection against objects being thrown over.