Rebar is an artificial steel bar with ridged steel bars that were used to get the required strong shape in a construction project. Rebar is the most common material used for rebar joints which are used in highways, bridges, buildings, dams, pipelines, and many other constructions. Just basically Rebar http://israelcpcnx.blogsmine.com/4160409/an-unbiased-view-of-rebar-detailing-india