Re: EXISTING CONCRETE STRENGTH IN RISKY CONSTRUCTION ANALYSIS Hello, in the case of selecting 'Minimum', the material strength information entered in the material settings in accordance with RYTEIE-2019 Article 4.1.4 in the program is multiplied by 0.9 and used in the calculations. If the strength values given to you are not multiplied by this value, it would be appropriate to use the values in the reports. Good work.