The horizontal connects verticals and allows hanging of planks and staircases. The secure connection transfers all lateral forces to the verticals for maximum load capacity.
The vertical is the main support of the entire system connected by spigot. The pipe is 48.6 mm dia. x T : 2.5 mm (STK500) with standart dimensions as below : The rings of thickness 8mm are spaced 50cm apart from each other (or 45cm apart from each other for 0.9m and 1.8m verticals) with 8 holes for horizontal and diagonal assembly.
The diagonal is a supplementary part to strengthen the stability of the entire system. The pipe is 42.7 mm dia. x T : 2.3 mm (STK500) with standard dimensions as below :