Minimum Spacing of Reinforcement per ACI 318-19 with ideCAD

How does ideCAD define minimum reinforcement space according to ACI 318-19?


  • Clear spacing is controlled automatically according to 25.2 for parallel reinforcement in a horizontal layer.

  • For longitudinal reinforcement in columns, pedestals, struts, and boundary elements in walls, clear spacing between bars is controlled automatically according to 25.2.3


Symbols

db = Nominal diameter of bar, wire, or prestressing strand, in.


Minimum spacing of reinforcement

According to ACI 318-19, for parallel reinforcement in a horizontal layer, clear spacing is controlled automatically at least the greatest of

  • 1 in.

  • db

According to 25.2.3, for longitudinal reinforcement in columns, pedestals, struts, and boundary elements in walls, clear spacing between bars is controlled automatically at least the greatest of

  • 1.5 in.

  • 1.5db