Fig.12: Fix middle top beam (E1) to back beams (C1/C2) with bolts (DD), flat washers (BB). And then, fix middle top beam
(E1) to front beams (B1/B2) with bolts (DD), flat washers (BB) as well.
Fig.13: Fix middle top beam (E1) to support beams (F1/F2/F3/F4) with bolts (DD), flat washers (BB).
Fig.14: Fix left top beam/right top beam (E2/E3) to posts (A1/A2/A3/A4) with bolts (LL), flat washers (BB).
Fig.15: Insert PC panel 4/5 (G4/G5) to the slide slot of left/right side beam (D1/D2), and then, insert PC panel 6/7 (G6/G7)
into the slot in the right side beam (D2) and right top beam (E3)
Fig.16-1: Insert PC panel 2 (G2) into the slot of left/right side beams middle top beam (E1),do not insert it fully.
Fig.16-2: Cover PC panel 1 (G1) onto the PC panel 2 (G2), and then insert PC panel 1(G1) to the upper slot of middle top
beam (E1).
Fig.16-3: Insert PC panel 3 (G3) into the bottom slot of middle top beam (E1).
Fig.17: Fix decorative railings (I3/I4) to top beams (E1/E2/E3) with screws (AA), flat washers (BB).