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Materials & Specificationsaka: reinforcing baraka: reinforcing steelaka: deformed bar

Rebar

In Plain English

Steel bars placed inside concrete to give it tensile strength and prevent cracking.

Definition

Rebar (reinforcing bar) is deformed steel bar placed inside concrete to provide tensile strength, since concrete is strong in compression but weak in tension. Rebar is specified by bar size (No. 3 through No. 18 in the US), yield strength (typically 60,000 psi), and grade. Proper rebar placement, cover, and splicing is critical to structural performance.

Example

The foundation specification required No. 5 rebar at 12 inches on center each way with 3 inches of concrete cover.

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