TIL the push bar on commercial doors is called a "crash bar" and was invented to prevent crowd crushes after 183 children died in a theater stampede due to a locked door

junho 30, 2021

TIL the push bar on commercial doors is called a "crash bar" and was invented to prevent crowd crushes after 183 children died in a theater stampede due to a locked door

TIL the push bar on commercial doors is called a "crash bar" and was invented to prevent crowd crushes after 183 children died in a theater stampede due to a locked door https://en.wikipedia.org/wiki/Crash_bar IntrudingAlligator June 30, 2021 at 02:50PM

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TIL the push bar on commercial doors is called a "crash bar" and was invented to prevent crowd crushes after 183 children died in a theater stampede due to a locked door

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