5.2. Installation of the vertical legs A3 and the Long cross pieces X1/X2
Place the two long crosspieces X1 or X2 forming an X, with the convex part of the
profiles and link them into contact with each other through a bolt M10x20 with nut
and washer, without tighten it yet.
Place the two vertical legs A3 parallel on the floor, so that both U profiles are
oriented towards the interior. Screw the long crosspieces X1 or X2 as the cross-
legged to the vertical legs A3 using four bolts M10x16 with its nuts. Tighten the four
bolts at the ends and the bolt of the central X (Figure 15a and 15b).
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