This article guides you through creating a Python-based application for designing steel base plates, essential for safely transferring column loads to foundations. It covers calculating base plate area, thickness, concrete bearing strength, and additional width using the T-stub method. The Python code is then transformed into a web app using the Viktor SDK, allowing engineers to input parameters and visualize 3D models of the structure. This efficient tool enhances the accuracy of baseplate designs and facilitates on-site checks via mobile devices, streamlining the construction workflow.