As a follow on from Destruction by design - how best to go about crafting a ruined landscape? I'll be asking two questions about signature destructive patterns, this is the first:
How, if at all, does deliberate destruction, such as the slighting of a fortress, the reformation era Dissolution of the Monasteries, or the modern demolition of buildings to make way for new construction, leave a long-lasting signature such that an observer viewing only centuries old ruins could tell that the results were deliberate rather than the simple result of time?
This question assumes that destruction of the building(s) in question is incomplete, otherwise there are no ruins to look at at all, and that the majority of the building material is still on site in one form or another. Good answers should concentrate on the relative distribution of such material, what's still standing and where the material from destroyed structural elements is to highlight any signature differences that could be diagnostic for an observer who knew nothing about the site history. Obviously there will be differences depending on the construction materials and techniques, these should also be highlighted where appropriate/diagnostically important.
Assume the building(s) were 50% destroyed before the site was abandoned and that the site is roughly 200 years post-abandonment to simplify issues of material degradation rather than answers being awkwardly time dependent.