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Understanding Rebar Requirements for Concrete Projects

Why Use Rebar?

Rebar (reinforcing bar) is essential in concrete construction because it:

  • Increases tensile strength
  • Prevents cracking
  • Improves durability
  • Reduces required concrete thickness

Common Rebar Sizes

  • #3 (⅜"): Patios, driveways
  • #4 (½"): Walls, columns
  • #5 (⅝"): Foundations, footings

Spacing Guidelines

  • Driveways: 18"-24" spacing
  • Walls: 36" vertical, 24" horizontal
  • Foundations: Maximum 18" spacing