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

d_b = 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.

• d_b

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.

• 1.5d_b

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