For this reason, the concrete is poured around an array of vertically-oriented lengths of steel rebar. Those reinforcing rods end up running through all of the layers, from top to bottom ...

This is why the incorporation of steel into concrete –which provides high levels of strength when stretched– has made so-called reinforced concrete the world's most widely used construction ...

“Crews are constructing sound walls and concrete barriers on both sides ... of Transportation also shows the placement of rebar (reinforcing rods) for the sound walls. Workers are also ...