Limiting value wmax for the calculated crack width
Eurocode 2 part 1-1: Design of concrete structures 7.3.1 (5)
A limiting value, wmax, for the calculated crack width, wk, taking into account the proposed function and nature of the structure and the costs of limiting cracking, should be established.
Recommendation
The recommended values of the calculated crack width wmax for relevant exposure classes are given in Table 7.1N.
