Re: Light Steel. Hello, currently light steel structures cannot be built with ideCAD Steel. You can only design roof and facade cladding, six purlins and braces using cold rolled profiles, and get reports. However, the analysis and design of the entire structure cannot be done according to the image you sent, but if you use c or z equations, you can model the whole structure and get its drawings. The reason for giving an error is that there is no appropriate regulation for the design in ideCAD Çelik. Currently, the program includes AISC 360-10, New Turkish Steel Regulation 2016 and Eurocode regulations, which are suitable for the design of hot rolled profiles. Since the regulations of light steel structures formed from cold rolled profiles are different, they cannot be designed. Good work.