Answer:
Message No. 226 appears in result windows 3.1 to 3.3 in RF‑CONCRETE Surfaces if the concrete tensile stresses from the defined load for the surface to be designed are lower than the concrete tensile strength.
In this case, Message 226 is displayed with the corresponding information.
By clicking the [i] button, you can open the design details for the respective non-designable location and display the intermediate values for the determination of the present tensile stress.
