SAS: structure composed only by pedestals, made of pressed galvanized steel. It is advisable to fix it to concrete slab by gluing through the holes in the base plate. Without stringers: maximum space.
STS: structure with pedestals as for SAS and connecting stringers made of 1 mm thick galvanized steel with reinforced “U” section 21x15 mm. For medium duty, with safety flap (law 626/494).
STR: structure with pedestals as for SAS and bearing stringers made of galvanized 1 mm thick steel with reinforced "U" section/profile 21x33 mm.
STO: structure with pedestals as for SAS and bearing stringers made of 1 mm thick galvanized steel with reinforced “U” section 21x33 mm. For medium heavy duty, with safety flap (law 626/494).
STC: structure with pedestals as for SAS and bearing stringers made of 1 mm thick galvanized steel with square section 22x22 mm. For heavy duty.