Why so many buildings collapsed in Turkey-Syria Earthquake-2023 ?

The Turkey Syria earthquake 2023 is one of the deadliest Earthquake so far in this region. The death toll so far almost crossed 30000 and still counting .
We tried to understand what caused the collapse of so many buildings in this region.
We analyzed with some of the findings and observation from those damaged structures collected from various sources, that may give good insight for understanding the destruction of such scale.
#turkeyearthquake2023 #earthquake #structuralengineering #dynamicanalysis #structuraldesign #concretedesign #seismology

[@zal4ever123]

Great analysis, Biswa! Well done! It is unfortunate, that several different reasons added up to such a huge catastrophe. This earthquake just proves that still a lot of work has to be done by the engineers, scientists and regulators to prevent humanity from such catastrophes in the future.
It looks like Turkish seismic code was not accurate or strict enough in providing the design response spectra for the engineers. I am wondering if other more modern seismic codes (i,e, IBC 2018) would give a more similar design response spectra to the actual one.

[@Torq123]

Thanks Modestas . Yes it’s indeed a lot more we engineers have to contribute to the society.. Nice talking to you after a long time..😊

[@user-bt8tw8dm6r]

perfect closing statement, sound like
a doctor's mistake would only lead to the death of one person, but a civil engineer's mistake could lead to the death of hundreds and thousands of people if a structure isn't designed very well.