设计单位 Lederer Ragnarsdóttir Oei Architekten
The Württemberg State Library building in Stuttgart is one of southern Germany’s preeminent architectural achievements of the 1960s. The building is impressive due to its generous sequence of spaces as well as the thoughtful choice of materials and the high quality of its architectural implementation.
The new building, which roughly adopts the ridge height of the Wilhelmspalais, is set apart from the original building to provide space for a path between the two buildings that enables a link from Urbanstraße to the lower level of the building complex. Construction of the new underground car park creates a generous plaza at what was previously the entrance level, which is flanked by the State Archives on far side. Urbanistically, the cubic volume of the old reading room, which now occupies the middle of the new plaza, forms a relationship vis-à-vis the central projection of the palace across the street. Ample steps establish a connection to the new pavement at street level.
At first glance, the new building has the appearance of an independent entity. The fact that it constitutes an annex to the old building is made clear by the choice of materials, dominated by exposed concrete cast with board formwork, creating echoes of the old in the new building. For the façade, white cement and titanium dioxide pigment were used for the concrete in order to achieve a light colouration. The outer surface of the exposed concrete façade is a cast-in-place concrete wythe that hangs in front of the load-bearing concrete walls, with core insulation in between. The formwork was made by hand from rough-sawn boards, whose dimensions match those of the existing building and which were applied to backing panels with a uniform joint and nailing pattern and then pre-aged with cement slurry.
The copper cladding of the old reading room finds its counterpart in the solid panels of the zigzag façades on the second and third floors. Like the existing building, the roof of the annex building is also covered with copper. The quality of the exposed concrete reveals the efforts and skills of the formwork makers every bit as much as the weather conditions at the time of concreting.
The lower level will also house the future cafeteria, which opens onto the street and can operate independently of the library. The main entrance to the library is on the level above. From there, library-goers reach the lobby with the requisite information counters, entry points to the controlled access zone, the book return, and a hall and exhibition area that opens out to Konrad-Adenauer-Straße.
On the first floor, which is accessible via a staircase within the controlled access zone, the connection to the old building is situated directly at the top of the stair. The central part of the floor is occupied by shelves. Along the length of the building on both sides, open workstations are lined up in rows towards the hall, with supplemental administrative rooms opposite them.
An atrium visually connects this level to the other three floors above. On the second and third floors, the reading desks are located along the zigzag exterior walls. The top floor is, by contrast, laid out in reverse: here the reading desks are placed in the middle – because on this level, the folded roof structure enable us to direct daylight into the centre of the building.
The rough and lively surfaces of the exposed concrete are contrasted with the smooth white surfaces of the suspended ceilings and wood cladding. Light green carpeting and white furnishings create a bright and cheerful atmosphere that contrasts with the muted tones of the existing building.
Inside the building, light colouration of the concrete was omitted for cost reasons. The concreting of the exposed concrete staircase inside the library area and the wide-span beams of the north-facing sawtooth roof on the fourth floor posed special challenges.
Annex to the Württemberg State Library in Stuttgart
Client: Landesbetrieb Vermögen und Bau Baden-Württemberg, Amt Stuttgart
Architects: Lederer Ragnarsdóttir Oei Architekten, Stuttgart
Team: David Fornol, Simone Neuhold, Dr. Anwar Algeith, Kazu Itho, Maximilan Löffler, Sophia Schmidt, Matthias Schneider, Anna Schönhoff, Luise Wegehaupt, Ugur Yilmaz
Landscape planning: Lederer Ragnarsdóttir Oei Architekten, Stuttgart
und Helmut Hornstein, Überlingen
Structural Engineering: Leonhardt, Andrä und Partner, Stuttgart
Engineering for technical building facilities: ZWP, Stuttgart
Electrical engineering: Inros Lackner, Rostock
Structural physics: GN Bauphysik, Stuttgart
Fire protection planning: TRIAS, Stuttgart
Competition: 12/2010 – 2. Preis
Construction period: 2015 – 2020
Gross floor area: 20.300 m2
Effective Area: 11.300 m2
Location: Konrad-Adenauer-Straße 10, 70173 Stuttgart
Photos: Brigida González, Stuttgart
版权声明：本文由Lederer Ragnarsdóttir Oei Architekten授权有方编辑整理。欢迎转发，禁止以有方编辑版本转载。
上一篇：自然的回响：不朽堂·龙山陵园小礼堂 / Studio 10