In general, it is becoming increasingly important to consider water in all planning from the outset and to give it the necessary space. Good solutions and synergies with climate protection and biodiversity can then often be found directly on site. To achieve this, everyone must pull together and develop a shared "water awareness". Multifunctional land use often allows several goals to be achieved on less land! The presentation highlights various possibilities for "sponge elements" in sponge settlements and their concrete multiple benefits.

The construction industry and law have one thing in common: when it comes to digitalization, they are regularly mentioned in the same breath as "lagging behind". In other words, they are not "early adopters" or "first movers". The small-scale nature of the construction sector, with industry, trades and many individual offices of architects and engineers, can also be claimed by the law with a multitude of laws and regulations. And now?
Is the "job stopper" really the law or rather politics? What do we need for the practicality of digital approval procedures? - I would like to present and discuss with you how data rooms can be created in the construction industry in a legally compliant and data sovereign manner, what projects and solutions already exist and what still needs to happen for the implementation of data and service platforms.

Achieving climate protection targets in the building sector requires new architectural and technical solutions. Due to its decentralized nature, solar thermal energy can make an important contribution to renewable heat supply. The area of multi-storey residential buildings in particular offers great potential for this, which has not yet been fully exploited for economic and acceptance reasons, among others.

The integration of solar thermal energy into the building envelope represents a promising approach to reducing costs and realizing high-quality architecture. The aim of the "Solar-VHF" project (FKZ 03ETW013F), funded by the Federal Ministry for Economic Affairs and Energy (BMWE), is to develop solar-thermally activated façades and evaluate their energy-saving potential using the example of multi-storey residential buildings. The project specifically addresses rear-ventilated curtain wall façades, which are ideally suited for activation for reasons of design, building physics and installation technology. The basic approach of the research project is to use the façade cladding as an absorber without changing the architectural effect, in order to achieve invisible integration and a visually appealing appearance. For the heat generator, the focus is on a heat pump, with different typologies and secondary sources being investigated.

In an initial project phase, different activation concepts were developed and then examined in real small-scale test façades (solar-thermally activated, curtain-type, rear-ventilated façade elements made of metal, glass and concrete) at the two participating research institutes, the Institut für Solarenergieforschung GmbH and the Fraunhofer Institute for Building Physics IBP. The concept is currently being tested on two demonstration buildings in Hanover and Pforzheim. The lecture will present initial results and operating experience from the pilot application in Pforzheim.

The "Bauart 5D Haus" stands for an innovative way of creating affordable living space with clear planning processes and structures. The presentation conveys the structural principles of the "Bauart 5D Haus" and shows, among other things, how sustainability can be consistently integrated into planning and execution. An example project with an integrated flow heat exchanger illustrates the practical use of natural energy sources in modern construction.

The Eco+ store in Creußen is exemplary of a new generation of retail properties that combine ecological responsibility and structural innovation. The building is constructed almost entirely from wood - including interior walls and façades - and deliberately dispenses with plaster. The insulation made from recycled paper provides efficient heat and cold insulation and noticeably improves the indoor air quality.
A key feature is the sustainable energy supply: Photovoltaic systems, battery storage and air heat pumps enable a largely self-sufficient mode of operation. The outdoor facilities are designed to promote biodiversity - with flowering meadows, climate-resistant trees, wild bee nesting aids and soakaways for natural rainwater infiltration.
With this project, Ratisbona shows how resource-saving construction, healthy materials and a nature-oriented design can be combined to create a sustainable market for people and the environment.