As a UIUC student used to be fond of reminding me, part of the University of Illinois’ contribution to the old Internet was in a building that, if it were to collapse, would fall outward and not crush the basement. Officially that building was designed so every office has natural light, like a collapsible water cup, but it’s a very interesting coincidence that it (the basement) is bomb proof.
https://en.wikipedia.org/wiki/Golden_Dome_(missile_defense_s...
It would be a pretty inefficient way to deploy offensive weapons.