TSC Minimum Spacing of Reinforcement

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Last updated: Sept 30, 2022 by Zeynep Aladağ
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For parallel reinforcement in a horizontal layer, clear spacing is controlled automatically

According to TS500, for longitudinal reinforcement in columns, pedestals, struts, and boundary elements in walls, clear spacing between bars is controlled automatically

Symbols

dagg = Nominal maximum size of coarse aggregate, in.
db = Nominal diameter of bar, wire, or prestressing strand,

According to TS 500 9.5.2, for parallel reinforcement in a horizontal layer, clear spacing is controlled automatically at least the greatest of

  • 25 mm

  • db

  • (4/3)dagg

According to TS 500 9.5.2, for longitudinal reinforcement in columns, pedestals, struts, and boundary elements in walls, clear spacing between bars is controlled automatically at least the greatest of

  • 40 mm

  • 1.5db

  • (4/3)dagg

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