Bisystem Forms a structure made from two tubes out of Pa 38 DIA 50 mm aluminium whose symmetrical axis are 203 mm apart.

The tubes are joined together with diagonal tubes DIA 12 mm. The structure endings are made with DIA 60 mm collars fitted on the DIA 50 mm tubes and TIG welded in argon backing shielding. The weight of one metre of the structure is approximately 1.4 kg.

The BISYSTEM construction finds its application in lightly loaded structures in places of entertainment and supplements the TRISYSTEMn assembling roof beams for large stage structures.