How many times have you wondered how strong those concrete barriers are that you see in front of military base entrances? From time to time someone asks what the concrete barriers are in front of controlled and secure buildings, such as the armory I drilled at. When I tell them that the barriers will stop traffic, even trucks, from approaching the secure building I usually get a look of disbelief.
Truck = 65,000 lbs. ~ Speed = 50 mph ~ Kinetic Energy = 5.5 MILLION ft-lbs ~ Stopped in 24 inches!!!
0.o
annerevedeparis 1 year ago