The tubes are arranged in four groups of three. The centre-most two groups consist of a central vertical column with a slightly inclined column either side of it longitudinally; in the two outermost groups the central columns are offset transversely as raking columns to provide lateral support. The tube groups are braced together horizontally and vertically at four stages.
The tubes are organized into four sections of three.  In the center, there's a vertical column flanked by slightly angled columns running lengthwise. The outermost sections feature offset central columns that function as supporting columns extending laterally. The entire structure is secured with horizontal and vertical bracing at four points.