The DXF export with the Isobands display option is the same as the Isolines display option. You only need to set the display option for results on surfaces. The display in a DXF file is then realized with hatchings. Each range of values previously defined in RFEM has its own layer here, so you can hide the individual ranges, if necessary.
This expanded export function allows you to export the surface reinforcement previously determined in the RF‑CONCRETE Surfaces add‑on module in a DXF file and display it as colored in a better way, for example. This function is especially useful in connection with the function of the manual definition of reinforcement areas in RF‑CONCRETE Surfaces, released in program version 5.06.1103 (see the image displaying the manually defined surface reinforcement applied in the SLS design).