Displacement limit for free standing canopy

[Jay_Chen]

Dears,

I'm designing a free standing canopy as a sunroof on a crane. I'm wondering if there is a horizontal/vertical displacement limit for the canopy?
I'm a mechanical engineer and not familiar with Eurocode or other similar codes. Could you please tell me the limits, related load case and the code clauses?

The roof elements are all steel.

 

[KootK]

I don't know the Eurocodes but this strikes me as a structure that would be highly tolerant of drift:

1) Surely very little weight with which to generate P-delta instability.

2) Probably nothing nearby that would be damaged by the movement of the shade.

In the absence of an actual code requirement for this, maybe H/60 drift limit?