Allowable deflection for cantilever purlin

[shnider22]

hello every body;
i want to know the minimum allowable deflection limit for cantilever built-up I section purlin in code mbma96? the purlin supports a panel.

 

[dik]

Maximum deflection would be predicated on any surfaces below that would be damaged by the cantilever deflection. Is there anything below? Is vibration an issue?

Dik

 

[shnider22]

nothing below

 

[klaus.]

Allowable deflections depend on the usage of the structure....
Usually codes do not give a limit....


best regards
Klaus