Illrainhof project - renovation of the historic residential complex
The Illrainhof at Klarenbrunnstraße 32, built in 1925 as the first workers' housing estate of its kind in Bludenz, is an important architectural testimony to the town's history. The housing estate, affectionately known as the ‘Spritzerbau’, has been closely linked to the development of the town and the Austrian Federal Railways for almost 100 years. The renovation and preservation of the Illrainhof is of particular concern to both ÖBB and the town of Bludenz. The aim of the project is to preserve the historical substance and to make the residential complex future-proof and sustainable in order to secure its significance for future generations.
Architectural features
The buildings are of compact design and are orientated towards the proportions of the surrounding buildings. With recessed loggias that offer more privacy and sun protection than balconies, the buildings open up to the surroundings. The proportions of the individual structures are orientated to the urban environment, but at the same time tailored to the scale of the local conditions and the building site.
Building concept and construction
A hybrid timber-concrete composite system is proposed as the structural concept, which enables economical construction and at the same time characterises contemporary construction. The simple design language of the building structures and a compact basement accelerate the construction process and contribute to the economic construction of the project. Prefabricated ceiling elements speed up the construction process and characterise the appearance of the buildings. At the same time, the choice of materials ensures a high level of sound and thermal insulation, which increases the functionality and efficiency of the project.
Urban identity and flexibility
The buildings act as an interface between the urban development form and the lively structure of the surrounding buildings. The new, dynamic design blends harmoniously into the cityscape. The reinterpretation of this style-defining structure creates a strong identification with the location and its history. The height of the building is staggered towards the city centre, which allows it to be naturally structured and integrated into the urban space.
Landscaping and microclimate
The design of the open spaces is based on flowing courtyard structures that create a close connection between the buildings and their surroundings. The low degree of sealed surfaces and extensive green roofs help to create a pleasant microclimate. The courtyards, which are connected to form large green spaces, promote biodiversity and create natural habitats in the city. Earth-bound facade greening also ensures a green cityscape.
Living quality and functionality
Particular attention is paid to the functional quality of the flats. The majority of the residential units are orientated on two sides, which results in optimal lighting and ventilation. The layout of the living and dining areas was also given special consideration in the design of the flats, which are generally orientated on three sides, creating particularly attractive and unique spaces. The flats for shift workers face east, as required, in order to meet the specific requirements of the residents. To minimise noise disturbance, these flats are centred on one building block. The buildings are characterised by their flexible use, particularly on the basement floor, which can be converted in a variety of ways thanks to its design and room height. Barrier-free and adaptable flats are also planned.
New construction and reinterpretation of the courtyard structure
This project is based on a modern reinterpretation of the classic courtyard structure, which is closely integrated into the urban development structure. The aim is to create diverse and lively courtyards on a harmonious scale that do justice to both the urban context and the human scale. The zoning of the courtyards and the targeted green space design create a high level of privacy, while the views of the green spaces offer a high quality of life. In addition, the existing semi-public thoroughfare and the view from Kaltenbrunnerstrasse towards Illrain will be more strongly accentuated. The car park is centrally located and arranged in such a way that all buildings, including the existing buildings, have a direct connection.
Sustainability and energy efficiency
Deep geothermal probes are proposed for primary heat generation, which can also be used for cooling if necessary. In addition, large-scale photovoltaic systems are planned on the extensively greened biodiversity roofs. These contribute to environmentally friendly energy generation. External sun protection elements are of course planned to maximise living comfort.
