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001042
2019-11-26

FAQ 004246 | I want to design a crack width of 0.1 mm in RF‑CONCRETE Surfaces. But when ...

Question:
I want to design a crack width of 0.1 mm in RF‑CONCRETE Surfaces. But when entering "0.10 mm" as the limit value, I get an error message saying that only a value between 0.2 to 0.4 mm can be designed.

Answer:
Please deactivate the "indirect calculation" using the limit diameter "lim d-s" or the member spacing "lim s-l".

The calculation of crack widths smaller than 0.20 mm is only possible using direct calculation according to EN 1992‑1‑1, 7.3.4.