Then what are you doing posting on discussion forums?–go to bed and get some rest. 
First I believe the term “structural gap” is potentially misleading. My practice is to state the amount of movement needed and let the Architect select the cover with input from the manufacturer. The joint hardware always takes up some space but typically we do much better than 50%.
You should also verify how much movement parallel to the joint needs to be accommodated.
Out here in California 1" of movement is very minor. At a 5th story bridge between buildings I designed a system to accommodate 24" in each direction.
Talk to the manufacturers rep regarding fire ratings. One approach is to drape a flexible assembly underneath the floor between the two sides. This may make a 2 hour rating possible.
If you can get the filler out of the joint then you can do much better than 50% movement.
We are in the process of designing a 24 inch joint on one of our projects here in CA
This is a huge gap in my estimation. We are working with C/S as well.
As for Nathan - I agree with Ron.
The NyQuil has apparent affected his spelling as well.