2222x
002667
2019-03-21

Question

In the RF‑CONCRETE Surfaces add-on module, I get a design failure for the serviceability limit state (SLS) and no values are displayed for the steel stresses. Also, Message 239) is displayed. Why?


Answer:
According to the specifications of EC2, the steel stress analysis in the SLS is only performed with the characteristic combination. If no combination of the "characteristic" type is selected, the design will not be performed. There are three ways to counter this:

1. Add an extra combination of the "characteristic" type to the selection of the combinations to be designed.

2. Change the combination type of an already selected combination so that it is considered as a characteristic combination.

3. Modify the specification of the standard and activate the design for other combination types (frequent or quasi-permanent) in the detail settings.