So you "claim that, dropped from the same height, a complex, 3 dimensional structure, like multiple stories of a building, (i.e., something that is not a solid block) will generate a HIGHER peak force in the components of whatever structure on which they fall AFTER the dropped parts have been broken up & compacted than they would generate in their original, "pre-broken" state. As compacted rubble, it will also deliver a higher pressure, resulting in a higher stress and more damage in the impacted part".
What do you say; After the dropped parts (parts C and B?) have been broken up & compacted, then they (parts C and B?) would generate a higher peak force in the components of whatever structure (part A?) on which they fall.
Is that it? Broken parts C and B destroy part A?
As compacted rubble (part B) will also deliver a higher pressure ... and more damage in the impacted part (part A).
Do you suggest that rubble B can damage, one-way crush, intact structure A?
Anyway, topic here is whether part C can one-way crush down part A. Go ahead and prove it.