This project involved the design and detailing of interior staircase balustrades for a residential building in Berlin. Site measurements revealed discrepancies between the architectural drawings and the as-built conditions, including stair dimensions and wall widths. All dimensions were verified on site and the system was redesigned in a 3D CAD environment, considering architectural plans and structural steel requirements. Fabrication and installation drawings were prepared, and quality control throughout the production phase was managed by our team.