Residential Building Hegibach

Location Zurich, Switzerland

Programme Ground floor: shop/bistro/office, Upper floors: residential

Competition Revision 2021

Client Hegibach AG
Clients representative: Thomas Pfister

Gross Floor Area 2‘119 m2

Team G/G Stefan Thommen

Cost Planning/Scheduling Ghisleni Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Building Physics Engineer WaltGalmarini AG, Zurich
Revision: Bauphysik Meier AG, Dällikon

Other Energie: WaltGalmarini AG, Zurich

Visualization Nightnurse Images AG, Zurich

Office-/Residential Building Hegibach

Location Zurich, Switzerland

Programme Office/service, residential

Competition 2020

Client Hegibach AG
Clients representative: Thomas Pfister

Gross Floor Area 2‘119 m2

Team G/G Stefan Thommen

Cost Planning/Scheduling Ghisleni Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Building Physics Engineer WaltGalmarini AG, Zurich

Other Energie: WaltGalmarini AG, Zurich

Visualization Nightnurse Images AG, Zurich

Kirchner Museum Davos

The main objective of the design was to create exhibition space for the art of E.L. Kirchner which should neither compete with Kirchner’s work nor unduly heighten it.
The four exhibition rooms on the entrance level of the museum have therefore been designed with great restraint. The white walls, the oak parquet flooring and the wall-to-wall glass ceiling form a simple cube, which is comparable in its spatial effect to the exhibition rooms of the turn of the century.

The daylight enters sideways, into the large overhead lighting spaces (skylights). Then it comes from above, through the etched glass ceiling, into the exhibition rooms. (This skylight solution prevents daylight being blocked out by snow - Davos is at a height of 4921 ft.) For use at night the large overhead lighting spaces above the exhibition rooms also contain the entire artificial lighting system.

The space between the cube-shaped exhibition rooms, constructed in fair-faced concrete, forms the entrance hall. Walking through the museum, visitors will keep returning to this hall, from where one has a view of the surrounding park, the road, the landscape and the town of Davos: all of them objects of Kirchner’s painting.

The museum is clad with a glass facade consisting of a variety of transparent, matt and polished glass. The glass-cladding plays and works with the clear, brilliant alpine light. Depending on the different functions of the glass – bringing light into the building and ensuring visibility – its finish differs: clear and mirror-smooth in the entrance hall to allow a view of the exterior, matt in the skylights to diffuse the incoming light, and matt and profiled as a translucent facade cladding to cover the thermal insulation on the concrete walls. A layer of recycled glass fragments on the roof replays the usual gravel, showing the last and transitory ‘finish’ of glass.

The high cubes of the exhibition rooms are located freely within the park between the old trees. At the same time, the layout reflects the settlement structure of Davos town, with its random placement of detached flat-roofed buildings.

Location Davos, Switzerland

Programme 4 exhibition spaces, connecting entrance hall, teaching room, library, conference room, offices, workshops, storage

Competition 1989, 1st Prize

Client Kirchner Stiftung Davos

Gross Floor Area 2‘208 m2

Team G/G Annette Gigon, Mike Guyer, Judith Brändle, Raphael Frei

Structural Engineer Vorprojekt: Aerni + Aerni Ingenieure AG, Zürich
DIAG Davoser Ingenieure AG, Davos

Electrical Engineer K. Frischknecht AG, Chur

Building Services Engineer 3-Plan Haustechnik AG, Winterthur

Lighting Consultant Institut für Tageslichttechnik Stuttgart, Germany

Signage Lars Müller, Baden

Photos © Heinrich Helfenstein

Living/Working Balgrist

Location Zurich, Switzerland

Programme Residential, Office/Service, Retail

Feasibility Study 2020

Client Einfache Gesellschaft «GP Balgrist»

Gross Floor Area 18‘706 m2

Team G/G Stefan Thommen, Vladimir Dianiska, Timon Brändle

Construction Management Ghisleni Partner AG, Rapperswil/Zurich

Landscape Architecture Schmid Landschaftsarchitekten GmbH, Zurich

Francis Bouygues Building, Ecole CentraleSupélec

On the plateau de Saclay, to the southeast of Paris, a cluster of universities and research facilities is emerging based on a long-term master plan. The new Francis Bouygues Building links the existing university with the new Gustave Eiffel Building, while its location also establishes a connection between the campus and the natural environs.

The new building occupies the entire plot with the exception of three volumetric setbacks that define the entrances. Two taller elements reinforce the corners along the street front and a patio with lush vegetation occupies the centre of the building.

The school is organized around a large, three-storey hall as a public space that connects the three departments and lends the building its identity. The departments, or Univers as they are called, are conceived as neighbourhoods with streets, lanes and squares, representing the motif of the city. The hall resembles an artificial topography that links the work areas and common areas on the ground floor and the upper levels, additionally creating a flowing, differentiated space that accommodates places of varying intimacy.

The façade is clad in enamelled ceramic elements with smooth, wavy or grooved surface textures. This architectural design relates to the surroundings, with the colours of the elements mirroring the departments of the school. In addition, the colouring of the modulated, shining surfaces responds to changes in the lighting, thus enhancing the visual impact of the building.

Location Paris Saclay, France

Programme University building, theatre, auditories, teaching and music rooms, laboratories, sports Hall, restaurant, cafeteria, offices, hotel, underground parking

Competition 2014, 1st Prize

Planning/Construction 2015–2017

Client Kluster (Bouygues Bâtiment Ile-de-France, Bouygues Energies & Services, HICL Infrastructure Limited)

Gross Floor Area 27‘400 m2

Competition Organzier CentraleSupélec

Team G/G Pieter Rabijns (Team Manager), Martin Schwarz, Kathrin Sindelar, Christoph Dober, Martin Feichtner, Andy Gratwohl, Arend Koelsch

Contact architects Synthèse Architecture, Arceuil, France

Construction Management Bouygues Bâtiment Île-de-France Ouvrages Publics, Guyancourt, France

General Contractor Bouygues Bâtiment Île-de-France Ouvrages Publics, Guyancourt, France

Landscape Architecture Bassinet Turquin Paysage, Paris, France

Cost Planning/Scheduling Bouygues Bâtiment Île-de-France Ouvrages Publics, Guyancourt, France

Structural Engineer Bouygues Bâtiment Île-de-France Ouvrages Publics, Guyancourt, France

Building Services Engineer EGIS, Paris, France

Building Physics Engineer AMOES, Asnières-sur-Seine, France

Fire Engineer BTP Consultants, Villebon-sur-Yvette, France

Acoustical Engineer Jean-Paul Lamoureux Acoustics, Paris, France

Signage Integral Ruedi Baur, Zurich (Concept)

Colours Harald F. Müller, Öhningen, Germany

Model © Zaborowsky, Zurich

Housing Development and Remodeling Pflegi-Areal

The quality of the building stock of the former hospital ‘Pflegerinnenschule Zürich’ indicated a clear allocation of the new functions – offices and housing – within the existing and newly constructed buildings. It was possible to retain the buildings to the southwest by Pfister Architects from 1933/34 and convert the former hospital wards into offices, while the heterogeneous hospital buildings to the northeast were replaced by housing.

Despite substantial interventions, the goal was to retain the spatial character of the large-scale facility. Akin to the former hospital building complex and the neighboring freestanding houses, the new buildings form a hybrid ensemble between a closed block development and individual building volumes.

Together with the existing buildings, the new housing complex demarcates and defines three large exterior spaces: the garden, the Samaritan Court, and the Carmen Court. The former patients’ garden, with its beautiful trees, was left almost untouched. The Samaritan Court serves as new access area for the underground parking garage and offers drop-off and parking space. The Carmen Court, in place of the former nurses’ garden and lying atop the new parking garage, now stretches across the entire length of the site. The ground here consists of fine gravel as well as large poured concrete slabs, which form a wide access path to the apartment entrances. Willows are planted in large baskets made of steel reinforcement bars and filled with stones and earth. Set atop the garage roof, these baskets form a nutrient-rich habitat as well as providing root space and acting as a counterweight for the trees.

Housing in the newly constructed buildings consists primarily of single-level apartments with generous floor plans. A total of forty-eight apartments with twenty-two different floor plan types offer 2.5 to 6.5 rooms. In addition, nine work studios were built at courtyard level. To cater to contemporary living/working constellations, some ground-level apartments are connected with the courtside studio spaces via internal stairs. Placing the ancillary and service spaces at the center of the apartments permits free circulation, while the load-bearing use of the service core allows for minimal, as well as conventional room divisions. Several apartments have exterior spaces in the form of terraces. Most of them, however, possess a kind of “fresh-air space”, also called a “seasonal room”. It transforms into an open loggia in good weather and can be used as a normal, heated interior space during the rest of the year.

Concrete is used for the basic construction as well as for the interior flooring. Gravel and sand, two ingredients of concrete, form the floor surfaces outside and on the roofs. The load-bearing cores and double-layered exterior walls form the support structure. Generous window openings provide the apartments with ample daylight and a sense of space. The highly perforated wall surfaces become skeleton-like structures and give the apartments – analogous to the existing buildings – a pragmatic, urban air.

Colors applied in the form of mineral-based, highly matt pigments contrast with the unpretentious, commonplace expression of the architectural language. The use of color was developed in collaboration with the artist Adrian Schiess as a means of defining the atmosphere of the outdoor spaces (Carmen Court, garden). Thus, only three of the long façades are painted, while the street front, the short façades, and the reveals were left unpainted. The colors chosen are yellow-green and white in the Carmen Court, and blue toward the garden. The yellow-green tone on the southwest façade of the Carmen Court colors the light and reflects its hue when the sun shines onto the opposite, white-painted façade, thereby “bathing” the entire courtyard space. The blue coat of paint on the garden side mingles with the green of the trees to transform the old garden into a blue-green “landscape space” – right in the middle of the city.

Location Zurich, Switzerland

Programme New construction with 48 apartments, 11 studios, 1 doctors surgery, underground parking 112 parking spaces; Remodeling of the existing building (former hospital) into office spaces

Competition 1999, 1st Prize

Planning/Construction 1999–2002

Client Stiftung Diakoniewerk Neumünster
Schweizerische Pflegerinnenschule, Zurich

Gross Floor Area 15’199 m2

Team G/G Gaby Kägi, Pascal Müller

Construction Management New Buildings: Ruoss Witzig Architekten, Zurich

Landscape Architecture Zulauf Seippel Schweingruber, Baden

Structural Engineer Basler & Hofmann AG, Zurich

Building Services Engineer Basler & Hofmann AG, Zurich

Building Physics Engineer Basler & Hofmann AG, Zurich

Colours Adrian Schiess, Zürich und Mouans-Sartoux, France

Housing Complex Park Grünenberg

One of the goals of this project was to make the existing Park Grünenberg the key theme of the new housing development. Three residential buildings were set in the western area of the park, formerly a landscape garden, while the architectural section of the garden to the east, along with the listed villa (Robert Bischoff and Hermann Weideli, 1910) were preserved as is. The new volumes are arranged and formed in a manner that guarantees vistas and perspectives onto the park or the lake. In conjunction with the vegetation, these polygonal volumes give the impression of a colorful “rock garden”.

The material used for the façades and construction is concrete – or “cast stone”. The exterior concrete shells extend into cantilevered structures, forming and bearing balconies. The concrete surfaces are finely sandblasted and coated with a glaze of mineral pigments. The artist collaborating on the color scheme, Pierre André Ferrand, envisioned a different tone for each building – dark gray, ochre, and yellow – each containing the color green. The appearance of the pigments themselves is completely matt, similar to a colored powder coating. From the outside, large windows reflect the surrounding trees, the sky, and the lake, while affording sweeping views from inside the apartments.

The careful arrangement of the apartments with their varying layouts enables each to benefit from the buildings’ orientation and location. In the smallest building (A), situated to the south, two apartments share each floor, enjoying either the virtues of slightly more lake views and evening sun in summertime, or more southern light. For the larger buildings located to the east and north (B and C), a variety of apartment types ensures that each is provided with both optimal natural light and vistas to the lake. The eight different types range from single-story units oriented toward three sides, to others with a living room that extends all the way through the building, to duplexes.

In analogy to the former landscape gardens, the green areas between the buildings are dotted with scattered trees and copses. Blooming bushes and evergreen shrubs adorn and organize the green spaces and distinguish the public areas from private gardens. The pathways are laid out as light-colored concrete surfaces that broaden and narrow, their effect comparable to large, level slabs of rock within the landscape.

Location Wädenswil, Switzerland

Programme 3 residential buildings with a total of 30 condominium apartments, 10 different apartment layouts, underground parking with 78 parking spaces

Competition 2002, 1st Prize

Planning/Construction 2004–2007

Client Grünenberg Baugesellschaft
c/o Beat Odinga AG, Uster

Gross Floor Area 9‘600 m2

Team G/G Volker Mencke

Construction Management Karl Steiner AG, Zurich

Landscape Architecture Hager Landschaftsarchitektur AG, Zurich

Structural Engineer Basler & Hofmann AG, Zurich

Electrical Engineer Innovative Elektrotechnik, Gossau Zurich

Building Services Engineer Schoch Reibenschuh AG, Nänikon

Acoustical Engineer IPA Energieberatung, Volketswil

Colours Pierre André Ferrand, Geneva/Krakau

Three Single Family Row Houses

The building, comprising three residential units, is a long, flat volume that runs parallel to the lake, to the street, and to the supporting wall in the middle of the property. Two storeys of balconies running the entire length of the façade that faces the lake include overhanging indoor rooms that extend beyond the length of the building on both sides. They underscore the orientation towards the lake of the two upper storeys.

The body of the building along with the supporting wall to the west creates a clearly defined slope-side entrance area. This is accessed by a metal staircase along the supporting wall, which is painted and overgrown with climbing plants. Overhanging volumes mark and protect the three entries, which access the units on the floor in the middle.

The building consists of two complete floors and a ground floor built into the slope, with a parking garage underneath. The living and dining areas as well as the adjoining balconies are situated on the top floor of the building to take maximum advantage of the lake view. On the floor below, in addition to the entrance, there are two large rooms of different sizes, which can be used as studies, guest rooms or bedrooms. There are two more rooms on the ground floor, which is level with the garden. The interior – kitchen, bathrooms and the arrangement of the rooms – were adapted to the needs of the respective owners.

Thanks to loadbearing outside walls and interior partitions, it was possible to individualize the floor plan of each unit. The skeleton-like layer of balconies facing Weidstrasse is concrete, the other three façades are clad in rear-ventilated panels seamlessly covered with fine-grained plaster. A metal-like iridescent silver unifies the masonry and, in combination with the naturally anodized aluminium window frames, the glass balustrades that reflect the silver, and the aluminium steamed fabric blinds, it generates an overall effect based on the play and reflection of the light. The pink of the supporting wall along the access path both contrasts and complements the over-all metallic and silver colouring of the building.

A few scattered trees are placed on the meadow in front of the building. Bushes along the borders of the lots ensure the privacy of the garden areas. Elongated bands of concrete alternate with gravel on the ground of the rear entrance space and the outdoor seating areas. The roof, planted with undulating rows of thyme in various shades of pink, optically extends the gardens of the neighbouring buildings above.

Location Rüschlikon, Switzerland

Programme Three residential units, combined in one building volume, with two storeys of projecting balconies

Competition 2002, 1st Prize

Planning/Construction 2002–2005

Client Weidstrasse 8 Client’s Association

Gross Floor Area 1‘200 m2

Team G/G Gaby Kägi

Construction Management Karl Steiner AG, Zurich

Landscape Architecture Vogt Landschaftsarchitekten, Zurich

Structural Engineer Henauer Gugler AG, Zurich

Electrical Engineer Elkom Partner AG, Chur

Building Services Engineer 3-Plan Haustechnik AG, Winterthur

Colours Adrian Schiess, Zurich and Mouans-Sartoux, France

Housing Development Brunnenhof

The former, noise-exposed three-story apartment buildings owned by the Foundation for Large Families in Zurich have been replaced by two slightly angled, elongated volumes of different heights. The larger, six-story building follows Hofwiesenstrasse but is oriented toward the park, which it shields from the street and hence from traffic noise. The smaller, four- to five-story building on Brunnenhofstrasse is in a certain sense within the park, surrounded by green on both sides with its height corresponding to that of the neighboring buildings. Both buildings are conceived as ‘stacks’ of horizontal slabs which cantilever to varying degrees and form generous balconies on the park side.

For the noise-affected building on Hofwiesenstrasse, access to the apartments is via longitudinally arranged staircases and spacious entryways that adjoin the eat-in kitchens. All bedrooms face the quiet park side and are connected by a projecting balcony. The living rooms extend through the apartment, facing both east and west and giving onto the park-side balconies.

Within the smaller Brunnenhofstrasse building, the living rooms are positioned along the façade and look onto the park to the south and southeast via adjoining balcony areas. In the four-story north- and south-facing part of the building, the eat-in kitchens are connected to the living rooms on the south side, while in the angled part of the building the kitchens enjoy the evening sun.

A circuit-like layout grants all apartment types spaciousness, freedom of movement for both children and adults, and enhanced flexibility of use. The latter is further augmented in the ground floor apartments by means of extra rooms between them that can be used by either apartment. The entrance lobbies on the ground floor are connecting rooms that link to the park and provide space for strollers, scooters, and toys. The naturally lit laundry and drying rooms are located in the basement, adjacent to the stairs.

A kindergarten and nursery are housed at the end of both buildings where the pathway to the park is situated. A multi-purpose common room takes the most prominent position at the corner between street and pathway. A continuous hedge along the street creates a green zone that provides the necessary privacy for the slightly elevated ground floor apartments. The park-facing apartments are elevated by half a story to allow the inclusion of a garden and play area between the park and the building. The hedges that run alongside the building approaches establish the border between these zones and the park.

The façades are formed by the balconies and the concrete bands that wrap horizontally around the building. Between them, floor-to-ceiling windows alternate with colored glass panels, joining together with sliding glass shades to create an interplay of reflecting and matt, opaque and translucent or transparent surfaces. The color concept was developed together with the artist Adrian Schiess. Facing the street, the glazing is dark blue and violet, while toward the park the tonality flows over large areas from blue tones to orange to yellow. The impression of the fluid, changing play of colors is enhanced by the varying positions of the sliding elements - ultimately the residents modify and create new color compositions every day, even every hour.

Location Zurich, Switzerland

Programme Two buildings, 72 apartments, 6 extra rooms, common room, kindergarten, day-care, underground parking with 75 parking spaces

Competition 2003, 1st Prize

Planning/Construction 2004–2007

Client Stiftung Wohnungen für kinderreiche Familien, Zurich

Gross Floor Area 18‘437 m2

Team G/G Markus Seiler (Project Manager), Lorenzo Igual, Rolf-Werner Wirtz, Ulrike Horn

Construction Management b+p baurealisation ag, Zurich

Landscape Architecture Hager Landschaftsarchitektur AG, Zurich

Structural Engineer Dr. Lüchinger + Meyer Bauingenieure AG, Zurich

Electrical Engineer Elkom Partner AG, Chur

Building Services Engineer 3-Plan Haustechnik AG, Winterthur

Building Physics Engineer Lemon Consult GmbH, Zurich

Colours Adrian Schiess, Mouans-Sartoux, France