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