2.6.3 Provided Reinforcement
Before RF-CONCRETE Surfaces designs the serviceability limit state, it checks the provided reinforcement. First, the program uses the internal forces of the serviceability to perform a design similar to the design of the ultimate limit state. The design results in a statically required reinforcement which is then compared to the user-defined provided reinforcement.
If the provided reinforcement is smaller than the statically required reinforcement, or if the design reveals any non-designable situations, the serviceability limit state designs are not performed. The problematic zones of the surface elements are indicated as non-designable.