This model shows Building C of the Cité Lavoisier in La Rochelle, incorporating hybrid solutions, such as a composite timber-metal structure and a timber-concrete slab. It utilizes the advanced features of RFEM 5, RF-TIMBER Pro, RF-STEEL EC3, and RF-DYNAM Pro to optimize structural performance. Sustainable materials ensure a responsible and innovative approach. The design, intended for a school complex, offers a precise and complete analysis of material and geometric interactions. Detailed graphic representations reveal the structural configuration and the specific treatments applied.