aspect ratio

huangyhg

aspect ratio
does anyone know of a limit on the aspect ratio for a steel deck with out any topping?  (roof deck.)   
in a case like that i would look to the supplier/manufacturer of the steel deck for guidance.  i would not base my design on an aspect ratio limit, particularly since these decking profiles can be so different from one another.  contact vicwest directly (or whoever is the manufacturer of the particular steel deck).  as a rule of thumb, i always check the deflection of the span i'm proposing against a 40psf udloading.  seems arbitrary, and it is, but it's good enough for a rough preliminary sizing, which is what i'm guessing you're after by asking for an aspect ratio...
in the usa, the building code puts limits on the aspect ratio of steel deck.  i would check under the building code that applies to you.
ucfse:
i am in the usa using ibc 2000 and i can't seem to find anything.  could you point out where you seeing this specifically?  
thanks