ORIGINAL: Mitty
I've heard stories that some times in Ukraine and Africa buildings arent built to the codes and resonance frequency sometimes interfere with frequency of aircondtioners or vent fans and it in its turn destroys buildings.
Mitty..
I and wife are often in Ukraine at visit to her family in Kyiv in Ukraine, there are lot of aircondtioners, vents etc.. in both new and older buildings and it is hot days in summer. In Russia and Ukraine + former of Soviet countries around Russia has same buildings after Nikita Khrushchev decided all peoples of Soviet shall live in same buildings of governments standard after Stalin period was ended. Never heard about buildings was collapsed of aircondtioner in eastern europe..
Jens Eirik