Depending on exactly where the building was, the quakes did shake *some* of the buildings more than building code required. (50% gravity where code requires withstanding 40% gravity.)
However, many buildings did not suffer 40%+ gravity and their collapse means the buildings were not built to code or were older than the code.
In Syria, many of the buildings were also damaged by the Syrian Civil War and simply never completely repaired, which added to building collapses.
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