The new 30 meter high tower in massive concrete construction consists of seven floors and contains a plant for the production of hexamethyldisiliazane (HMDS). In order to optimally adapt the building to Bucher's needs, we worked closely with the chemical specialists. The challenge was that for production reasons the new building had to be built directly adjacent to the existing plant. On the other hand, the tank farm for ammonia (NH3) was arranged as a free-standing structure at the edge of the plant site to be easily accessible for truck traffic.