17-09-2021, 09:48 PM
(17-09-2021, 09:38 PM)Tangsen Wrote: What happen during the earthquake the big iron ball was shook off and fall out from the building ... will be bounce or ... like a golf ball plug into soft turf? .... mmmmm .... makes me wonder
I suspect the building designers must have put to test in a lab. the effect of the big iron ball to sway safely in times of an earthquake...