Sustainability Report

The project's emphasis on using local materials, in-house prefabricated elements, and resource-efficient construction methods, along with the creative repurposing of on-site materials, indicates a strong focus on minimizing the carbon footprint of materials and transport. The embodied carbon strategies focus on local sourcing and material efficiency to reduce transport and overall material consumption:

• Local Sourcing: The project prioritized building materials that could be sourced locally to minimize transport routes. Concrete aggregates were from nearby gravel pits, and prefabricated elements were produced in-house in a neighboring village. Local woods were used for the facades, and even the wool for the rugs came from sheep in Tyrol.

• Resource Minimization: The design uses slender constructions to achieve a low consumption of resources.

• Repurposing Materials: The project repurposed materials in a creative way, such as using material baskets from construction sites as indoor flower boxes.

The building's energy concept, which combines a large-scale PV system with groundwater-based heat pumps for a nearly energy-self-sufficient operation, along with passive cooling strategies and a highly airtight facade, demonstrates a commitment to extremely low operational emissions. The operational energy concept aims for a high degree of energy self-sufficiency:

• Groundwater for Heating and Cooling: The building uses groundwater for both heating and cooling purposes.

• On-site PV System: A large-scale photovoltaic system is installed on the roof, producing around 150 MWh of electricity per year. Up to 60% of this is used directly in the building to operate the heat pumps.

• Low-Temperature Heating: The project utilizes concrete core activation for low-temperature heating, which is a sustainable and economical solution.

• High-Quality Envelope: The energy concept is supported by a high-quality, airtight facade.

• Passive Cooling: Optimal external shading, achieved through flexible external blinds and green balconies, supports the cooling strategy. Temperature simulations during the planning phase ensured that no additional mechanical ventilation or cooling systems would be required.

• E-Mobility Support: The car park and outdoor parking spaces are equipped with electric charging stations to promote e-mobility.

The project's strategies for service and maintenance are centered on durability, easy reconfiguration, and minimizing waste:

• Longevity and Flexibility: The building is designed for a long life cycle, with a floor plan that allows for easy changes to the office layout. Installations are unclad to support high flexibility and enable easy dismantling.

• Reduced Retrofitting: A surrounding skirting board accommodates all supply air elements, making subsequent retrofits obsolete. Lights and acoustic elements are suspended from unclad ceilings, allowing them to be relocated as needed.

• Landscaping: The green balconies and use of plants and trees typical of the region improve biodiversity, optimize the microclimate, and delay water drainage, reducing the need for extensive irrigation and maintenance.