invention for the construction of an enclosed space the walls are composed of the tubular components 1 of the structures which are connected onto the special support components 11 which are similar in shape and composition to the support components 4 shown in fig4 fig8 illustrates the application of a structure according to this invention for the construction of a walkway or simple bridge between two given points this structure is extremely simple it is assembled on the ground on one of the two sides to be connected and the cables or other tensory elements are temporarily anchored on this side then the structure is placed in position between this and the other side to be connected by pulling the cables over to the other side and lastly the cables or other tensory elements are tensioned and fixed in place fig9 represents a structure according to this invention which incorporates tubular support components 12 similar to the terminal tubular components 4 illustrated in fig4 which are suspended from a console 13 in this version the structure may be used as a vertical escape ladder where the steps rungs are the tubular components 1 connected onto alternate support components 12 to allow for space between steps or as a type of blind or protective cover for facades and exposed gable end walls.