The transom is made of 25 I-shaped steel, 5 m long and 4 M net span.
Four sets of clamps are arranged on the transom to define the position of the longitudinal beam, short columns are welded at both ends to connect the diagonal braces, and three concave holes are arranged at the bottom of each end.
When installing the transom, the concave holes are inserted into the bolts on the lower chord.
Transom is positioned on panel. The spacing of concave holes is the same as that of panel. And the spacing of panel is relatively fixed when the transom is in place.
It is connected with main beam with bolt cross beam bracket. The spacing between beams is 2.5 M, and diagonally braced with angle steel or standard tie rod.