Older materials, in this case steel and concrete, are actually inferior to their modern counterparts.
Older buildings were built "more sturdily" because they [[sometimes) were overdesigned and overbuilt to be conservative; forces due to wind and seismic events, soil mechanics, and modern structural analysis were understood far less in 1912 than now. To imply that newer structures are unsafe is ignorant and alarmist. Any structure will deteriorate if it doesn't receive proper maintenance.
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