Steel Reinforced

I saw a program on tornadoes on the Learning Channel last night. It seems that a major concern in the tornado belt is protection from flying objects. Standard frame houses and even brick houses offer little protection from a 2x4 traveling at 200 MPH. Researchers have found that a layer of steel-reinforced concrete is generally adequate protection from "projectiles." They were shooting 2x4's at a brick wall, and they went right through. When they added a layer of steel-reinforced concrete behind the brick, the 2x4 disintegrated on impact. Many municipalities in the tornado belt are now requiring new structures to have at least one area surrounded by steel-reinforced concrete.

Offered by Michael.