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Beams: the minimum area of longitudinal reinforcement As,min

Eurocode 2 part 1-1: Design of concrete structures (1)

The area of longitudinal tension reinforcement should not be taken as less than As,min.


The recommended value for the minimum reinforcement areas is:

As,min = 0,26 (fctm / fyk) bt d   ≥ 0,0013 bt d (9.1N)

Alternatively, for secondary elements, where some risk of brittle failure may be accepted, As,min may be taken as 1,2 times the area required in ULS verification.

National choice