Ribbed steel bars installed in foundation concrete walls, footers, and poured in place concrete structures designed to strengthen concrete Comes in various thickness' and strength grade
solid cylindrical metal bars, approximately 1/2 - 3/4 inch diameter, made in varying lengths from 4' to 12' + Rebar is used in construction to reinforce the strength of poured concrete This material may be salvaged from construction sites, or purchased at home hardware stores