Fig.1: Attach connector (E) onto short supporting beam(1) (A) (short supporting beam(2) (B)); place
supporting beam joint (C) onto middle of short supporting beam(1) (A) and short supporting beam(2) (B),
then lock and tighten with bolt (AA) and flat washer (BB). Move connector (E) to the middle, lock and
connect onto short supporting beam(1) (A) and short supporting beam(2) (B); assemble long supporting
beam (D) in the same way.
Fig.2: Lock and tighten the assembled short supporting beam and long supporting beam with bolt (AA)
and flat washer (BB) to form a rectangle frame.
Fig.3: Place beam joint (J) onto middle of beam(1) (F) (beam(2) (G)) and beam(3) (H) (beam(4) (I)), and
move it to an appropriate position; then make them connected with bolt (AA) and flat washer (BB).
Fig.4: Lock the assembled beams onto the assembled supporting beams with bolt (CC) and flat washer
(BB).