On a job interview

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How many times have you wondered how strong those cement barriers are that you see in front of military base entrances? Read below and then view the clip...

From time to time people ask what the concrete barriers are in front of controlled and secure buildings. When told that the barriers will stop traffic, even trucks, from approaching the secure building it usually evokes a look of disbelief. Here's some footage to prove the point. In this test, the following parameters were used.

Read them and then watch the film.

Truck = 65,000 lbs. Speed = 50 mph. Kinetic Energy = 5.5 million foot lbs.

Stopped in 24 INCHES!!
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