The warehouse will be built with steel I-beams
and precast concrete walls like the picture below
The roof will be flat, pretty much what these two images show
something like this basically
Extruding from the top of the roof should be a 4foot railing going all around
Floor to ceiling should be 18ft total
the interior would look similar to this
garage door should be 12x12
front entrance recessed
emergency exit in the back
1 long 20ft window like the picture below
note - need site plan with structures, floor plan(walls door roof, windows utilities), electric, hvac, mechanical, structural engineer