Architecture and Identity • In the future, the expanded vocational school in Bülach will be perceived as an ensemble of distinct buildings. Visually, the buildings are connected through the design of their façades. Despite using different materials, the buildings relate to each other through vertical reliefs, horizontal window bands, and striking sawtooth roofs. Functionally, both parts of the ensemble have separate entrances with generously sized forecourts to manage pedestrian flows and enhance safety. Internally, however, the buildings are directly connected at the ground floor, ensuring smooth circulation and enabling the use of spatial or functional synergies. 

Sustainability Through Interdisciplinary Planning • The interdisciplinary collaboration between building services, structural engineering, and architecture results in a building that seamlessly combines sustainability, aesthetics, and low-tech solutions. The goal is to meet energy and sustainability standards primarily through architectural and structural measures rather than technical ones. Orientation based on the sun’s path and sufficient shading help minimize heat gain during the summer months. The compact design, straightforward structural system, and principles of system separation and disassembly support the school’s operational needs by enabling future modifications or renovations with minimal effort and resource consumption. • A project review confirms a greenhouse gas value of 8.8 kg CO₂/m² GFA/year. A refined calculation using the Eco-Tool adjusts this to 6.0 kg CO₂/m² GFA/year for construction and 0.6 kg CO₂/m² GFA/year for operation.