Abstract: A scaffolding system includes tubular columns (3) and horizontal and/or diagonal crossbars (1,2). One or more scaffolding joints (4) are arranged on each tubular column (3) and placed above and at a distance from each other. Connecting elements (1,2) are engaged with the joints nots. The tubular columns includes wedge-shaped pockets for wedge shaped plug in elements forming joints (4) and connecting elements (1,2), the wedge-shaped plug in elements (5) are arranged on the ends of the crossbars and engage with the wedge pockets (6) of varying geometry. The horizontal connecting elements (1) are mounted via above-mentioned linkage of the wedge-shaped plug-in element (5) and the wedge pocket. The diagonal crossbars (2) are mounted by means of wedge heads (7) which are arranged on each side of a diagonal brace (2.1) and are slid over the wedge pocket (6) of the tubular column (3) via the receiving opening located in the small front face lies in a flat position.