Kindly go through the list of question regarding modeling and assumption taken?

Model Description:Hopper Supported over Steel frame Structure  

Questions

1.Directly Applied the hopper capacity load on the top upper member is this assumption right??(Hopper capacity/1 bay area) this is distributed over beam as member load via manual distribution.

2.What if, we directly applying the floor load as (Hopper capacity/1 bay area) i think distribution on beam will same ,Kindly comment on it?

3. When bracing here as pipe connected to beam,in staad in order make bracing we have provide node thereby dividing the beam into two part,for ex beam 75 and 717, 

though defined LZ= full size of size beam in staad even for column defined LZ = Total height of structure ;is it right to do this way?

5. Should we Define bracing member as truss or we provide release in them.?i guess warning in staad are due to truss only

6.some of the member are not designed,how to design  them.??how to surpass the slenderness 

Kindly provide the insight on taken assumption and comment on the result obtained suggest if something can be added further?

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