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Under pressure
   

Under pressure

This concrete manhole cover was installed at an altitude of approximately 5,249 ft above sea level, next to the mountain lodge building. The symbol 30 KN means the maximal load force in kilonewtons (kN). Based on it, I calculated the withstand a pressure of 3 tons.

By Published On: 2021/03Last Updated: 2023/02Categories: Lower AustriaViews: 489
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