Rebars used for?

Rebar is used to give strength to masonry and concrete constructions. Masonry is this case is concrete blocks. Concrete, block or cast in place, is good for compression forces and not tension. Steel...

Reinforcement of concrete structures.

Re-bar (reinforced bar) is the metal strengthening used inside pre-stressed (pre-made) or other concrete products. It is the brown spikes poking up through the concrete columns of concrete framed...

It's main use is to give concrete strength. A web of rebar is built in the form and concrete poured around it. This keeps the concrete from breaking apart.

Yes, it typically is. Although most jobs will spec Grade 40, most fabricators stock grade 60 and use it for all applications as it is easier and more cost effective to have one inventory and grade as...