franksemails.comVehicle Barrier"Have you wondered how strong those cement barriers are that you see in front of military base entrances and government buildings?This was sent by someone who works for the Army Engineers answering the question "How effective are the concrete barriers are in front of these controlled and secure buildings." He says that the barriers will stop traffic, even trucks, from approaching the secure building. Truck = 65,000 lbs (29,483kgs). ~ Speed = 50 mph (80 km/h) ~ Kinetic Energy = 5.5 MILLION ft-lbs (76 MILLION kg cm) Stopped in 24 inches (61cm)!!!" |
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