Complex consists of 8 vertical columns with the height of 550 mm- 2 pcs, 1200mm- 2 pcs, 1500mm- 4 pcs and 3 sets of benches. The length of each bench is 1650 mm. Benches are fixed to columns, using crossbars at different heights: 500, 950 and 1400mm. Crossbar fittings are put into effect with collars.