Hello first of all; I have such a problem. In continuous foundation beams, an interesting result is obtained, such as a stirrup diameter of 16 and 12 pieces. The building is a small 3-storey building. Beam foundation span 4.85 50/120 Continuous beam dimensions. Stirrup tightening is turned off. When I select only 10 stirrups from the reinforcement diameters, I get an error with insufficient reinforcement section. My prediction is that Ø10/20 will provide. I am attaching the project. It will be useful for me if you can help and/or criticize in general Thank you from now. (Program ver 8.62)