Error message in concrete design: proof is not possible. The specified load with the selected load combination types does not contain any required evidence.
In concrete design, the design situations can be defined as characteristic with direct load, characteristic with forced deformation, frequently and quasi-constantly.
You can view the verifications required according to the standard for the respective dimensioning initiatives in the detail settings of the add-on module (see Figure 1).
If proofs are now activated in tab sheet 1.6 under suitability for use that do not correspond to the design situation, a hint will appear after the calculation.
In this case it is recommended to define the necessary design situations or to remove the proofs to be calculated in register 1.6.
Crack width, tension, deflection, serviceability
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