Rebar: Steel Reinforcement for Concrete & Masonry (2026)
Rebar is deformed steel rod embedded in concrete to provide tensile strength that concrete alone lacks. It prevents cracking under load and thermal movement. Standard residential sizes range from #3 (3/8 inch) to #5 (5/8 inch) in 20-foot lengths with Grade 60 being the most common.
Key Features
- Deformed surface for concrete grip; Grade 60 at 60
- 000 PSI yield; Sizes #3 through #5 for residential; 20-foot standard lengths; Weldable and tie-wire compatible
Specifications
Applications
- Concrete footings; Foundation walls; Slabs on grade; Retaining walls; CMU wall reinforcement
Installation Overview
Position rebar on chairs to maintain 3-inch concrete cover for footings. Tie intersections with wire ties. Overlap splices minimum 40 bar diameters. Inspect before pouring.
Pros & Cons
Pros
- ✓ Dramatically increases tensile strength; Prevents crack propagation; Long service life; Easy to cut and bend; Code-required for structural work
Cons
- ✗ Corrodes if cover is inadequate; Heavy and awkward; Requires proper placement; Adds labor and cost
Top Brands
Code Requirements
Must meet ASTM A615 Grade 60. Minimum cover per ACI 318: 3 inches for footings, 1.5 inches for walls. Lap splices per ACI 318 Section 25.
Buying Tips
Buy pre-cut lengths to reduce waste. Epoxy-coated rebar is worth it in corrosive environments. Always maintain minimum concrete cover.
Frequently Asked Questions
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