Estrel Tower 
Berlin, Germany 
© Barkow Leibinger
© Barkow Leibinger

project description


Located at the edge of Berlin’s suburb Neukölln the 175 m tall Estrel Tower will be Germany’s tallest hotel building.
The tower is part of a building ensemble consisting of the hotel tower, an office building, a parking garage and a convention centre.

structure


The proposed gravity structure for the hotel tower comprises a flat slab system supported by concrete columns and core walls. The core walls are an inner circumferential support for the flat slabs that typically span 8.50 m. The columns shall be arranged to allow a flexible and efficient floor space and a continuous and direct load transfer. The foundation for the high-rise tower shall be a combined pile raft foundation (CPRF).
The multiple use tower podium is designed as a conventional reinforced concrete structure. The atrium roof structure will be constructed of steel beams and girders covered by point supported glass panels. The structure of the exhibition and convention centre consists of a long-span steel roof structure which houses below mixed usage areas, including the ballroom, large hall and the foyer. The lateral system comprises concrete walls and columns.

façade


In addition to the structural design and building physics consultancy B+G is responsible for the design of the facades. The total area of the various façades sums up to approx. 42,000 m². The concept is to develop a system of façades that react to the differing needs of these buildings but still creating a family of façades in a corresponding architectural language. The highly glazed façades will meet high energy standards while creating spectacular views for the guests. A series of external fins providing additional external sun shading creates an additional layer of texture to the façade, giving it its unique appearance.
Sound protection plays a key role in the design phase due to a motorway to be built in the vicinity of the complex.

Data


Client:
Estrel Hotel-Betriebs-GmbH, Berlin, Germany

Architect:
Barkow Leibinger Architekten, Berlin, Germany

Competition:1st prize (2014)

Start of planning: 2015

GFA High-rise: approx. 54,000 m² | Height High-rise: approx. 176 m | Surface area façade: 42,000 m²

Service:
Structural engineering, Façade engineering, Building physics

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18 - 20 September 2017

Design Modelling Symposium Paris 2017

This's years conference will be on the topic: "Humanizing digital reality"

Applications are open the pre-symposium workshops and Master Classes from 16 - 17 September.

The symposium will be organized with the assistance of Klaas de Rycke (ENSA Versailles / B+G Paris) and Christoph Gengnagel (UDK Berlin / B+G Berlin).

Conference venue:
ENSA-V, Ecole Nationale Supérieure d'Architecture de Versailles, Paris

Footbridge 2017 Berlin

The Paper "Intelligent Fabrication - Digital Bridges" was accepted for the Footbridge 2017 Berlin Conference.

Prepared by Klaas de Rycke, Louis Bergis, Ewa Jankowska-Kus, Dragos Naicu, Adam Orlinski and Matthew Tam.

Location: TU Berlin, Gebäude 13b, Hörsaal B, Germany
Date: 6. - 8.9.2017

August 2017

New European headquarter of the MHK Group: progress on the construction site

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July 2017

FOUR, Frankfurt

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We are pleased to be in charge with the structural engineering together with Werner Sobek Frankfurt in a team (ARGE).

Since March 2017

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The installation was reopened in March 2017 after extensive renewal measures and will be open for visitors until March 2018. The accessible 25-metres-high net structure was originally planned in collaboration with Bollinger + Grohmann is installed sind 2013 in the Ständehaus in Düsseldorf, Germany.

July 2017

Ferris wheel in the "Spreepark", Berlin: Expert opinion

The ferris wheel in Berlin's Spreepark shall be recommissioned. Therefore an expert assessment by B+G with the participation of a metalworking company has been effected.



The client "Grün Berlin GmbH" has made a video documentation about the assessment by the experts of the ferris wheel and presents it on its website.

22. - 23. June 2017

Exchange of experience with German and Norwegian Planners in Oslo

The Network for Architectural Exchange NAX organized together with B + G Oslo a workshop on the topic "Planning, building, cooperations - collaboration between German and Norwegian specialist planners and architects".

After the event the NAX travelling exhibition "Contemporary Architecture. Made in Germany" was inaugurated at the AHK in Oslo. The exhibition runs until autmn 2017 with the participation of 34 NAX members.

25 - 28 September 2017

IASS 2017: Interfaces

The annual IASS (International Association for Shell and Spatial Structures) symposium will take place in Hamburg, Germany between September 25 - 28 2017. This year the theme of the symposium will be "INTERFACES: ARCHITECTURE . ENGINEERING . SCIENCE".

Applications are open for workshops (between September 20 - 24) lead by Clemens Preisinger and Moritz Heimrath - "Optimization of Statically Informed Grid-Shell Patterns", by Philipp Eisenbach - "Aggregated Structure: Approximating Topology Optimized Material Distribution with discrete building blocks" and Dragos Naicu - 'Parametric Design, Optimisation and Testing of lattice structures using densified engineered bamboo".

Manfred Grohmann is Vice Chair of the organisation comittee and Bollinger+Grohmann acts a sponsor for the symposium.

13 July 2017

B2Run Munich: successful participation of the B+G Munich office

10 colleagues of the B+G Munich team ran together with a total of 30,000 participants the 6km course through the Olympiapark Munich.

Apprenticeship as draughtsperson in civil engineering

Starting on 01/09/2017 we offer again a training as a draftsman for civil engineering. There is the possibility to attend 2-3 test-days in our Frankfurt office.

10 June - 1 October 2017

Sculpture Projects Münster

Bollinger+Grohmann Paris supported Oscar Tuazon in designing "Burn the Formwork" for the Sculpture Projects Münster, a German festival held every ten years.

The exhibition is organized by the LWL-Museum für Kunst und Kultur and open to the public from the 10th of June until the 1st of October.

27 June 2017

Competition for Walkerhill Spa & Resort: 1st Prize

for the concept by Delugan Meissl Associated Architects with Bollinger + Grohmann. For this project located in Seoul, Korea, the spa features, among other things, the longest infinity pool in the world.

31 May 2017

Competition for the extension of the Kunsthochschule Kassel: 2nd prize

with Kuehn Malvezzi, Berlin, Germany. The 1st prize goes to Innauer Matt Architekten from Benzau (Austria), the 3rd prize to TRU Architekten Part mbB, Berlin, Germany.
The submitted concepts will shortly be exhibitet in Kassel, Germany.

15 June 2017

Inauguration of the Crematorium "Hörnli" in Basel

The new L-shaped crematorium is located on the premises of the Hörnli cemetery in Basel. It is characterized by the calm rhythm of the brickwork compounds.

6 - 22 June 2017

KEPOS – c[pd]g collective post digital garden

The MAK FUTURE LAB, in cooperation with the University of Applied Arts Vienna, invites to the presentation:
"KEPOS - prototype of an interactive sculpture"

KEPOS is an interactive sculpture for the urban space, realized by the Univeristy of Applied Arts in Vienna. The pavilion combines the built and natural environment with the digital world of the information exchange.
The sculpture will be presented from 6 - 22 June 2017 in front of the entrance of the MAK.

Apart from sponsoring, Bollinger + Grohmann gave expert advice and developed the parametric structural design for the pavilion.

13 April - 15 October 2017

IGA Berlin 2017: Inside the Flower

Between 13 April and 15 October 2017, the IGA Berlin 2017 is inviting to a festival of the most beautiful international garden design and green urban life culture under the motto "an ocean of colours".
In the "Horizons" area is located, among others, the pavilion "Inside the Flower" by the artist Janet Laurence. The project was implemented in cooperation with LAVA and Cityplot, Bollinger + Grohmann gave advice for static issues.

Opening of HYUNDAI Motorstudio Goyang in Seoul

In Seoul, Hyundai's largest adventure centre just opened. On a total of 14 levels are located the new exhibition-, office-, educational- and recreational spaces. The building has also 5 basement levels, housing parking-, service areas. Delugan Meissl Associated Architects from Vienna were responsible for the design and execution, Bollinger + Grohmann were charged with the structural and façade design in this project.

20 May - 20 September 2017

A "Paradiesgarten" for Luther

The contribution "Paradiesgarten" by students of the UdK Berlin within the framework of a students competition was awarded the first prize. The walk-in installation will be shown until September 20th in the "Stadtpark Wittenberg" opposite the meadow of the castle.
Bollinger + Grohmann provided the students during planning and implementation.

Art Biennale in Venice 2017

The Austrian Pavilion presents in the course of the 57th Biennale again artistic installations. Bollinger + Grohmann gave expert advice to the artist Erwin Wurm for his Performance One Minute Sculpture "Stand quiet and look out over the Mediterranean Sea" as contribution for the Austrian Pavilion and acted as sponsor.
The Biennale runs from 17 May until 26 November 2017.

9 May 2017

Europa leuchtet

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Bollinger + Grohmann was pleased to support this project and provided technical advice for the organisers.

New website online: Ingenieurtalente

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19 April 2017

Construction site of the Park Apartments Belvedere: Excursion of our Viennese team

A mixed-use building complex consisting of three residential and two hotel towers in close proximity of Vienna central station is rapidly progressing! The open ground floor space with the characteristic piles is clearly visible now. Expected completion is scheduled for autumn 2018.

February 2017

Won: "Typenhochhaus 2.0"

First prize for the competition team of LIN Finn Geipel, Berlin, Germany + Giulia Andi, Paris, France. The aim of the non-open ideas competition was the design of a high-rise as modular system.
Bollinger+Grohmann provided technical advice for the architects.

30 March 2017

Competition "Mino": 1st prize

in the invited competition for the young Norwegian architects from Transborder Studio, Oslo, Norway, together with Bollinger + Grohmann Ingeniører for the extension of the Holocaust Centre in Oslo.

27 March 2017

Competition Frankston Railway Station in Melbourne: 2nd prize

for the team Supermanouvre and Scott Carver from Sydney.
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March 2017

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February 2017

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30 January 2017

Competition new Oscar-Paret school: 1st prize

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17 January 2017

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21 November 2016

L'Equerre d'argent 2016 für "Lieu de vie"

This year, the jury of the 34th edition of the architecural prize decided to opt for the project on the campus of the Université de Saclay.
Architect: Muoto, Paris
Structural and Façade Design: Bollinger + Grohmann Sarl, Paris