Deflection limits of Steel deck structures- BS 5950 code

Can anyone let me know the maximum deflection limit (Span/limit) for a steel platform structure?
I am planning to design this platform using steel columns and beams and 6 mm plate is welded to the top of the joists (as the supporting slab). I am using BS 5950 code for member design.

The purpose of the steel platform is to use for storing of crates of production material (each crate weighs approx 20KN).


This is from the 2000 Edition:

Above is a snippet.