Hypar shell

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Hypar shell
Hypar shell (west side), 2007

Hypar shell (west side), 2007

Data
place Magdeburg
architect Ulrich Müther
Client City of Magdeburg
Architectural style Modern
Construction year 1969
height 15 m
Floor space 2304 m²
particularities
Self-supporting prestressed concrete roof made of four hypar shells

The Hypar shell is a multi-purpose hall , which was built in 1969 according to the plans of the civil engineer Ulrich Müther . It is located in Magdeburg's Rotehorn city ​​park . There it lies in an axis between the Magdeburg city hall and the state broadcasting house of the MDR . 1998 the shell construction plant in the country monument list received and is under monument protection .

construction

The prestressed concrete ceiling of Hyparschale is self-supporting. It consists of four hyperbolic paraboloids and spans a square area of ​​48 × 48 meters. With a floor area of ​​around 2300 m², the hall is the largest shell structure in Müthers after the demolition of the former Ahornblatt restaurant in Berlin . On the roof surface of the steel was sprayed concrete applied, the shell thickness is only 7 cm. From 2020, one centimeter of carbon concrete will be added for sealing above and below the ceiling. The loads of the four roof shells are led to the ground as inclined supports (60 × 90 cm), so the outer surface is almost column-free and almost entirely made of glass. Architecture critics substantiate this type of construction with the attributes "filigree", "light" and "weightless".

The foundation of the Magdeburg construction is based on the concept for the Ostseeperle restaurant in Glowe on Rügen as a single Hypar bowl (1968). The multi-purpose hall in Rostock- Lütten Klein , the town hall in Neubrandenburg and the rowing center in Dresden on the banks of the Elbe, each with different roof pitches and sizes, correspond to the same building type with four tilted hypar shells .

In Magdeburg, Müther put four Hypar bowls, each 24 × 24 meters square, together and tilted them slightly downwards in the center in order to let in more daylight through a larger window area. The glazing consists of semi-transparent Copilit profile glass , which "filters the daylight in a special way and ensures evenly mild, diffuse light in the room". At the seams of the four shells there were four skylights made of glass prismatic concrete panels . Because the roof had become leaky, these light strips were taped shut. At its highest points the roof reaches a height of 15 meters, the lowest point in the center of the interior is 12 meters.

A 40 × 20 meter oscillating floor was embedded under a parquet floor. The grandstands with a light brown clinker base ("Märkischer Klinkerverband") and the interior fittings were no longer in good condition as they had been increasingly vandalized.

Rescue initiatives

The building is now in great need of renovation, and renovation of the roof will cost two million euros. The hall has been blocked by the building authorities since 1997. A demolition could be averted by two reports. In 2005 and 2008, the possible revival of the hall was a seminar topic for the real estate management department at the Anhalt University of Applied Sciences under the direction of Robert Off.

Water sports center Dresden , same construction type as the Hypar shell

At the beginning of 2010, the former civil engineer Siegfried Enkelmann founded a citizens' initiative to preserve the Hypar shell. Enkelmann suggested that a support association should acquire the monument and gradually coordinate the renovation and its financing. The city administration was open to his suggestions and demanded a "coherent financing and operator concept", which could not be proven. On February 22, 2011, the Rosa Luxemburg Foundation held a colloquium of the Rosa Luxemburg Foundation with representatives and city councilors on the Hyparschale and other buildings by Müther in the neighboring town hall of Magdeburg . The main lecture was given by the architectural historian and Müther expert Tanja Seeböck. A delegation from the Magdeburger Gesellschaft für Wirtschaftsservice (GWM) visited the Dresden rowing center in July 2011 to get an idea of ​​the renovation of this building-like object.

On July 3, 2012, a non-partisan Magdeburg association was founded with the aim of saving and further using the Hypar bowl . In November 2012, the Creative Industry Association of Saxony-Anhalt (KWSA) proposed the Hyparschale as a start-up center for young entrepreneurs in industrial design, from the film and advertising industry, and software programming. The neighboring exhibition halls could also be used.

In September 2013 the Magdeburg city council decided to renovate the roof and the roof supports for 1.8 million euros. A search for investors should be resumed.

Students from Magdeburg University and the Bavarian University of Applied Sciences Rosenheim developed new usage concepts and business plans for the Hypar shell in the 2013/14 winter semester . In addition to a sporting use, two cultural concepts as an art and design center for creative people or as a scientific museum and experimental field similar to the phæno were discussed intensively. In February 2014, the results were presented in the “HyparAktiv” exhibition in the City-Carre Magdeburg .

In a new tender in the spring of 2016, AOC Immobilien AG from Magdeburg was the only bidder and planned the renovation, installation and extension of offices as well as public use with a café for 7.8 million euros. In the end, the business plan had a funding gap of 1.6 million euros. Therefore, in October 2016, the city council rejected the sale of the Hypar shell to the bidding company.

Mayor Lutz Trümper announced at a city council meeting on June 8, 2017 that he was now campaigning for the city of Magdeburg to take over the renovation. The funds made available for this, amounting to € 1.7 million, were to be used for repairing the roof and for securing the statics. After the summer break, a template should be drawn up and submitted to the city council for a decision. Construction work could then begin in 2018. Trümper expressed confidence that new uses will be found after the renovation. In the course of a general improvement in the quality of the Rotehorn Park as a local recreation area, the city administration and city council are planning a number of other measures, including the renovation of the city ​​hall .


  • Historical photos

  • Hypar shell under construction, 1969

  • Exhibition hall with a view from the Elbe , 1970

  • Exhibition hall with a view of Magdeburg Cathedral , 1970

Redevelopment

Window facade, 2015

On August 8, 2018, Mayor Trümper and Heinz Ulrich, Head of Municipal Building Management for the City of Magdeburg, presented the redevelopment plan for Magdeburg's Hypar shell to the public. Accordingly, it is planned to spend a total of 16.9 million euros for the complete renovation and interior work . The aim is to be able to offer a modern event location for meetings, congresses and cultural events for 200 to 500 participants. The building planner is the Hamburg architects gmp .

Since only around 5 million euros are initially available for this, the start of construction had to be postponed to spring 2019 and the construction period extended to autumn 2021 in order to gain the possibility of further, but limited, funding.

The hall is to have a second floor with a large atrium and flood protection. An optimized lighting concept will increase the attractiveness of the building. In addition, the wider area around the Hypar shell and the entire Rotehorn city park should receive 285 trees in 2018 in order to compensate for the tree losses in recent years.

After unanimous support from the culture committee, the city council also approved the urban redevelopment plan on September 20, 2018. Following Muther's tradition of always using the latest materials and construction techniques, the new composite material carbon concrete is used here. Carbon concrete was developed at the Technical Universities in Dresden and Aachen from the mid-1990s and is characterized by higher tensile strength and lower dead weight with the same load-bearing capacity compared to prestressed concrete. This allows the weight and strength of the roof structure to be reduced even further, which is also associated with cost savings compared to prestressed concrete.

In the case of the hypar shell, a seal and thermal insulation are applied to the reinforcement layer made of carbon concrete. The total thickness of the reinforcement on the top and bottom is only 10 mm each. The redevelopment planning was drawn up by the Dresden engineering offices CarboCon and Prof. Rühle, Jentzsch und Partner , the latter office was in charge of the redevelopment of the Dresden water sports center Blasewitz von Müther from 2002 to 2006 . The Swiss construction company Implenia was commissioned to renovate the shell.

The Federal Ministry of the Interior, Building and Home Affairs announced on April 5, 2019 that the Hypar shell will receive funding of 5 million euros as part of the national program for national urban development projects . The reason for this decision was as follows: “With the renovation of the Hypar shell as a monument to the GDR post-war modernism , one of the last remaining large shell structures by the engineer Ulrich Müther is being renovated. It is a component in the overall upgrading of the Rotehorn Park with its large number of important buildings from different phases of modernity. "

On August 22, 2019, the majority of Magdeburg's city council approved a takeover of the municipal financing share of 57 percent (€ 9.78 million) of a total of around € 17 million in the renovation of the hall. The work will be divided into two sections, first the roof will be renovated, then the interior of the hall will be completed. Due to a delay in the approval process, the renovation of the Hypar shell will not be completed until 2022. The official start of construction was on December 3, 2019, opened by Mayor Lutz Trümper, KGM boss Heinz Ulrich and architect Christian Hellmund.

During a construction site inspection in June 2020, KGM manager Ulrich explained to the media that the glass blocks of the light cross had become brittle soon after the inauguration. Due to the temperature fluctuations in the prestressed concrete of the surrounding concrete shells, the glass blocks also shifted and were soon covered with roofing felt. In order to better compensate for these expansions and contractions, flexible, “transparent straps” with ventilation flaps are to be attached in the future.

Literature (selection)

  • Nicole Siebold, Denise Dih: New ideas for using the Hypar bowl Magdeburg 2014 . [WS 2013/14, cooperation project Rosenheim University, Faculty of Interior Design - Otto von Guericke University Magdeburg, Chair for Entrepreneurship - Kuratorium Hyperschale eV / University of Rosenheim]. ISBN 978-3-944025-09-4 .
  • Tanja Seeböck: Hyparschale Magdeburg. In: dies .: swings in concrete. Ulrich Müther's shell structures. Thomas Helms Verlag , Schwerin 2016, ISBN 978-3-944033-02-0 , pp. 241-255, table of contents.
  • Ulrich Müther. Shell structures in Magdeburg. Publication series of the Müther Archive, Volume 3, Wismar 2017, ISBN 978-3-942100-46-5 .
  • Manuel Hentschel: Rehabilitation of Hypar shell Magdeburg. In: C³ - Carbon Concrete Composit (Ed.), 10th Carbon and Textile Concrete Days Dresden , (conference proceedings), 25. – 26. September 2018, pp. 58–59, (PDF; 16.9 MB).
  • Manuel Hentschel, Alexander Schumann, Heinz Ulrich, Stefan Jentzsch: Renovation of the Hypar shell Magdeburg. In: Bautechnik , 2019, vol. 96, issue 1, pp. 25–30, doi : 10.1002 / bate.201800087 , with illustrations.

Movies

  • Swing instead of plate - the Hypar bowl in Magdeburg. Documentary, Germany, 2019, 45:12 min., Script and director: André Strobel, production: MDR , series: Der Osten - Discover where you live , first broadcast: May 7, 2019 on MDR television , synopsis by MDR, ( Memento vom May 1, 2019 in the Internet Archive ).
  • Hypar shell in Magdeburg. Archive recordings, Germany 2015, 1:27 min., Production: DRA , MDR , series: MDR Zeitreise , broadcast: August 18, 2016, table of contents with online video from MDR.
  • Folded concrete: legendary GDR architecture - How the Hypar shell should be saved. TV report, Germany 2014, 8 min., Moderation: Anja Petzold, production: MDR, editing: Sachsen-Anhalt today , first broadcast: February 11, 2014.

Web links

Commons : Hyparschale in Magdeburg  - collection of pictures, videos and audio files

Photos and videos

Individual evidence

  1. ↑ Seeböck, Hyparschale Magdeburg , p. 246.
  2. ^ Leaflet: Die Hyparschale von Magdeburg - 6th Henselmann Colloquium. In: Rosa Luxemburg Foundation , February 22, 2011, (PDF; 800 kB).
  3. ↑ Seeböck, Hyparschale Magdeburg , ISBN 978-3-944033-02-0 , p. 254.
  4. ↑ a b c d e Manuel Hentschel, Alexander Schumann, Heinz Ulrich, Stefan Jentzsch: Renovation of the Hypar shell Magdeburg. In: Bautechnik , 2019, vol. 96, issue 1, pp. 25-30.
  5. ↑ Architecture instead of prefabricated buildings. Müther exhibition in Templin. In: BauNetz , November 8, 2006.
  6. ↑ Carmen Böker: The utopia of the maple leaf. In: Berliner Zeitung , August 24, 2007.
  7. ↑ a b Seeböck, Hyparschale Magdeburg , p. 243.
  8. ↑ Seeböck, Hyparschale Magdeburg , pp. 253-254.
  9. ↑ Seeböck, Hyparschale Magdeburg , p. 245.
  10. ↑ Seeböck, Hyparschale Magdeburg , p. 255.
  11. ↑ Seeböck, Hyparschale Magdeburg , p. 328.
  12. ↑ Seeböck, Hyparschale Magdeburg , p. 244.
  13. ↑ Photo gallery: Hypar shell Magdeburg: 50 years and close to decay. In: MDR , April 5, 2019.
  14. ↑ Karl-Heinz Kaiser: Resolved: Hypar shell is saved. In: Volksstimme , September 7, 2013.
  15. ^ Hypar shell: Modernity in danger. ( Memento from September 27, 2007 in the Internet Archive ) In: BauNetz , 2004.
  16. ↑ Martin Rieß: Hyparschale: The crane stretches over the roof. In: Volksstimme , September 7, 2013.
  17. ↑ Seeböck, Hyparschale Magdeburg , p. 248.
  18. ↑ 6th Henselmann Colloquium - The Hypar Bowl of Magdeburg. In: rosalux.de , June 2011.
  19. ↑ Seeböck, Hyparschale Magdeburg , p. 250.
  20. ↑ Robert Richter: The Board of Trustees wants to save a monument: “The Hypar bowl must not decay!” In: Volksstimme , July 5, 2012.
  21. ↑ Study suggests: Revitalizing Hypar shell as a place for creative companies . In: Volksstimme , November 15, 2012.
  22. ↑ Robert Richter: City council approves redevelopment for 1.8 million euros. Resolved: Hypar shell is saved. In: Volksstimme , September 7, 2013.
  23. ↑ Press release of the Hyparschale Kuratorium: Students are looking for ideas for a new use. ( Memento from October 29, 2014 in the web archive archive.today ) In: hyparschale-md.de , November 2, 2013.
  24. ^ Exhibition of hypar-active students. ( Memento from October 29, 2014 in the web archive archive.today ) In: Volksstimme , February 12, 2014.
  25. ↑ Martin Rieß: Presentation: Magdeburgers are in demand for the hypar shell idea. In: Volksstimme , October 16, 2016.
  26. ↑ Katja Tessnow: Financing: Rescue of the hypar shell failed. In: Volksstimme , October 29, 2016.
  27. ↑ Martin Rieß: Magdeburg redevelops Hypar shell. In: Volksstimme , June 8, 2017.
  28. ^ Jw: Magdeburg. City wants to renovate Hyparschale itself. ( Memento from August 25, 2017 in the Internet Archive ). In: MDR Saxony-Anhalt , June 9, 2017.
  29. ^ Michaela Schröder: Urban redevelopment east. Beauty treatment for Magdeburg City Park. In: Volksstimme , May 2, 2017.
  30. ^ Rainer Schweingel: Magdeburg City Hall. Renovation costing 65 million euros. In: Volksstimme , May 4, 2017.
  31. ↑ OB presents plans to modernize and repair the Hypar shell. In: City of Magdeburg , August 8, 2018.
  32. ↑ there: Magdeburg wants to save eastern modernism. gmp are to renovate the Hypar shell by Ulrich Müther. In: BauNetz , August 21, 2018, with picture gallery, floor plans.
  33. ↑ a b Today in Magdeburg: OB presents plans to modernize and repair the Hypar shell. In: magdeburger-news.de , August 8, 2018, accessed on August 10, 2018, with concept photos and usage plans.
  34. ↑ Concept image: Hypar shell, 1st floor and light strips in the roof ceiling. In: magdeburger-news.de / gmp , August 8, 2018, accessed on August 10, 2018
  35. ↑ a b Press release: Construction work in the Hypar shell has started. Investment of almost 17 million euros / completion planned for summer 2022. In: City of Nagdeburg , December 4, 2019.
  36. ↑ Martin Rieß: Restoration. No concerts in Hyparschale Magdeburg. In: Volksstimme , September 12, 2018.
  37. ↑ Restoration of the monument. Green light for new Hypar shell in Magdeburg. In: MDR , September 21, 2018.
  38. ↑ Martin Rieß: Carbon concrete for Magdeburg Hypar shell. In: Volksstimme , September 19, 2018.
  39. ↑ Implenia Repairs renovates Hypar shell in Magdeburg with carbon concrete technology. In: Implenia , January 14, 2020, accessed March 5, 2020.
  40. ↑ Martin Rieß: Restoration. Millions for Magdeburg Hyparschale. In: Volksstimme , April 5, 2019.
  41. ↑ Funding list : National Urban Development Projects - Funding Projects 2018/2019. In: Federal Ministry of the Interior , April 4, 2019, (PDF; 171 kB), accessed on April 6, 2019.
  42. ^ Peter Ließmann: Restoration of Hypar shell. Magdeburg: deadline untenable. In: Volksstimme , May 16, 2019.
  43. ↑ Martin Rieß: City Council Magdeburg. Magdeburg releases money for Hypar shell. In: Volksstimme , August 22, 2019.
  44. ↑ Press release: 17 million euros: Modernization of the Hypar shell has started. In: magdeburg.de , December 4, 2019, accessed on March 5, 2020.
  45. ^ Martin Rieß: Start of construction for Magdeburg Hypar shell. In: Volksstimme , December 4, 2019.
  46. ↑ Martin Rieß: Work on the Magdeburg Hyparschale. In: Volksstimme , June 24, 2020, with photo series.

Coordinates: 52 ° 7 ′ 14 ″  N , 11 ° 38 ′ 22 ″  E