This kind of curved roof truss without groud tower , put on the ground directly, with size 10x6m, 12x8m, 14x8m, 16x8m, for events, party, dj, trade show. it can be enlarged by adding arch sections, compared with flat roof, it brings amazing stage effect, strong load capacity, our exquisite workmanship ensures sooth connection and no dformation. please contact us for the details