ArchDaily | Broadcasting Architecture Worldwidethe world's most visited architecture website
i

Sign up now and start saving and organizing your favorite architecture projects and photos

i

Find the most inspiring products for your projects in our Product Catalog.

i

Get the ArchDaily Chrome Extension and be inspired with every new tab. Install here »

h

Nominate now the Building of the Year 2017 »

All
Projects
Products
Events
Competitions
  1. ArchDaily
  2. Projects
  3. Hotels
  4. Germany
  5. Just Burgeff architekten + a3lab
  6. 2010
  7. WestendGate / Just Burgeff architekten + a3lab

WestendGate / Just Burgeff architekten + a3lab

  • 01:00 - 14 October, 2011
WestendGate / Just Burgeff architekten + a3lab
WestendGate / Just Burgeff architekten + a3lab, Courtesy of  a3lab
Courtesy of a3lab

Courtesy of  a3lab Courtesy of  a3lab Courtesy of  a3lab Courtesy of  a3lab +18

  • Architects

  • Location

    Frankfurt, Germany
  • Architects

    Just Burgeff architekten + a3lab (Asterios Agkathidis Architecture)
  • Client

    Aberdeen GmbH
  • Project Year

    2010
  • Photographs

    Courtesy of a3lab

From the architect. WestendGate, also known as the Marriott Hotel, has currently being extensively modernized. At 159 meters and 47 storeys, the original structure was for a short time the tallest high-rise in Germany. Built in 1976 by the architects Siegfried Hoyer and Richard Heil in the Westend of Frankfurt am Main, the building became the path breaker for high-rise construction in the whole district and the rest of Frankfurt. Since the Marriott Hotel Group moved there in 1989, it is still the highest hotel in Europe. It occupies the top 18 of the 46 storys of the three wing structured existing building. It has its own lobby on the ground floor and uses the second floor for a ball room.

Site Plan
Site Plan

All the remaining levels, which are accessible via a second lobby, are available for office space and building services.

Among other things, the renovation includes an architectural and energy efficient new design of the office levels, including the lobby and a conference level for the hotel as well as a new design and refurbishing of the entire façade, the installation of new solar façade modules, new building air-conditioning and optimizing of the lighting.

Courtesy of  a3lab
Courtesy of a3lab

In addition the grounds were reorganized and designed and a new canopy was planned. After completion of the work, a reduction of the energy use and CO2 emissions of about 36% was achieved. 
That earned the WestendGate the Green Building Certificate issued by the European Commission.

Diagram
Diagram

Grounds and Canopy

The high-rise is located at the intersection of public green areas which are now extended by the newly created grounds. With the relocation of the underground garage exit, a large urban space for recreation was established. 1500 sqm of basalt tiles spread out smoothly into the urban surroundings, opening the space up to the city while with its new roof, it creates a new gateway to the Westend.

Courtesy of  a3lab
Courtesy of a3lab

The organic tree-like structure of the sculptural roof is easily recognizable from a great distance. 1000 sqm of roof surface extend at one point up to a height of 14 meters, zoning in the square, with translucent air cushions filling out the construction and providing office workers and hotel guests refuge from the rain.

Courtesy of  a3lab
Courtesy of a3lab

Idea and Determination of Form

The roof landscape design integrates aspects of urban development as well as spatial program and structural demands.

The flying reticulated shell, created from an inverted tree growth algorithm, is supported on the supports of the underground garage. The tree-like mesh was statically optimized with a Finite Element Analysis method to arrived at a minimal deployment of steel. The result was doubly curved surfaces, which depict the distribution of forces of the structural framework. A unity of form and structure.

Diagram
Diagram

This type of associative design requires not only the deployment of highly developed software, but also a new form of collaboration between all those involved in the planning. The integral planning process between architecture and structural design is the basis for the high quality and economical structure. Starting with the generation of the form this collaboration continues in the communication through the exchange of data with the interactive 3D models, up to production.

Detail
Detail

Execution

The supporting structure consists of steel pipes of the same diameter and three different wall thicknesses. This made possible the geometric solution of multi-axis nodal points. The pipes were welded together in several assembly units and after galvanization were bolted onto site joints. This in turn made possible a rapid, on-site assembly without welding.

Diagram
Diagram

The double curved, hive-like roof surfaces were fitted with transparent pneumatic ETFE plastic cushions in different shapes. Air supply hoses and cables were located inside the gutters and covered with grating. The permanently inflated cushions furnish protection against sun and rain in spite of their optical and physical airiness, offer an unencumbered view of the future new WestendGate façade.

Elevation
Elevation

The canopy draws in the entire forecourt, which provides access to the combined new office center and hotel driveway ensemble. The canopy is consciously set off from the façade and the rest of the building, forming along with the newly designed forecourt an independent ensemble which reconciles the scale of the 160 meter high-rise with the urban space below.

Courtesy of  a3lab
Courtesy of a3lab

Façade

The existing façade was completely renovated and redesigned, the pilasters doubled, and the new façade panels were equipped with additional insulation to bring them up to current energy standards. In addition vertically arranged solar façade modules are integrated on the outside.

Courtesy of  a3lab
Courtesy of a3lab

While care was taken in the redesign of the façade to maintain the former appearance of dark façade surfaces and light gable ends, the old static and flat grace was given a plastic effect with a dynamic structuring, creating a proportionality that becomes accessible to the viewer upon approaching the building.

Diagram
Diagram

The façade was assembled from 3-dimensional components, which are each kinked in the vertical section, whereby the path of the kink shifts from panel to panel. As the shadow and the light reflections of the elements vary depending on the position of the sun, the façade adapts to the sunlight.

Elevation
Elevation
Location to be used only as a reference. It could indicate city/country but not exact address. Cite: "WestendGate / Just Burgeff architekten + a3lab" 14 Oct 2011. ArchDaily. Accessed . <http://www.archdaily.com/175519/westendgate-just-burgeff-architekten-a3lab/>
Read comments

21 Comments

Pierre · June 07, 2012

the canopy top view is breathtaking. re: resemblance to Isozaki's i think that one looks more organic than this one

di ana · May 25, 2012
Oriol · April 28, 2012

The canopy reminds me too much to Isozaki's in Barcelona

Luis Cesar · October 23, 2011

I like this site so much.

Amelia Cazorla · October 20, 2011

El Hotel Marriot se reinventa en ecoeficiente y orgánico. #arquitectura #Germany #Alemania http://t.co/GuBUyspP

Ionut Anton · October 17, 2011

Deformation as design - WestendGate / Just Burgeff architekten + a3lab http://t.co/HDWU4S1V

rupertkensington · October 16, 2011

The voronoi strikes again! The biomimesis and the tree metaphor have been done thousands of times.

I like this though, simple, functional, and formally successful.

TheStructuralArtists · October 15, 2011

This entrance canopy for the newly refurbished WestendGate building in Frankfurt really livens up the old tower... http://t.co/ecK4raXg

Nicholas Patten · October 15, 2011

WestendGate. http://t.co/DJ3etnAj

Martina Cavalieri · October 15, 2011

WestendGate / Just Burgeff architekten + a3lab | ArchDaily http://t.co/3JLjvjFX via @archdaily

C.C. · October 15, 2011

Wow! like it!! WestendGate / Just Burgeff architekten + a3lab | ArchDaily http://t.co/hAi6WLJv via @archdaily

Helena Degreas · October 15, 2011

WestendGate / Just Burgeff architekten + a3lab http://t.co/O2ASZcjp

M. Cenk Tunaboylu · October 15, 2011

Voronoi I love you. WestendGate / Just Burgeff architekten + a3lab http://t.co/FeQB8uMb

Santi Maggio Savasta · October 14, 2011

WestendGate / Just Burgeff architekten + a3lab http://t.co/Y5fqdjyZ #Architettura #Architecture

Makio135 Daily Insp · October 14, 2011

WestendGate / Just Burgeff architekten + a3lab http://t.co/BCl3eoDv #Daily_Inspiration

stoffportion · October 14, 2011

unbelievable useless and misplaced, sorry

G.M. Casqueiro · October 14, 2011

WestendGate / Just Burgeff architekten + a3lab /by @mmjett http://t.co/0Z2u4sR1

Marko Todorov · October 14, 2011

WestendGate / Just Burgeff architekten + a3lab http://t.co/lxeASBeu

asterios agkathidis · October 14, 2011

WestendGate / Just Burgeff architekten + a3lab http://t.co/KcATMCdY

ArchitecturePassion · October 14, 2011

WestendGate / Just Burgeff architekten + a3lab: Courtesy of a3labArchitects: Just Burgeff architekten + a3... http://t.co/vud6sy8i

up_today_arch · October 14, 2011

interesting structure!

···

Comments are closed

Read comments