Rebar Development Length Calculator to ACI 318

Rebar #

f'c (psi)

fy (psi)

Cover

Ktr

Casting Position

More than 12 in. of fresh concrete placed below horizontal reinforcement

Other

Concrete:

NormalWeight

LightWeight

Spacing and cover:

Clear spacing of bars or wires not less than db, clear cover not less than db, and stirrups or ties throughout ld not less than code minimum

Clear spacing of bars or wires not less than 2db and clear cover not less than db

All other cases

Epoxy:

Epoxy-coated or zinc and epoxy dual-coated reinforcement with clear cover less than 3db or clear spacing less than 6db

Epoxy-coated or zinc and epoxy dual-coated reinforcement for all other conditions

Uncoated or zinc-coated (galvanized) reinforcement

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