Refurbishment Outdoor Areas and Water Basin, University of Zurich

Location Zurich

Programme Refurbishment of the water basin, terraces and entrance of the University's Main Building

Commission 2020

Planning/Construction 2020–2026
with Architekturbüro Wolfensberger + Partner AG, Zurich

Client Hochbauamt Kanton Zürich
Occupant: University of Zurich

Gross Floor Area AGF 3'281 m2

Team G/G Pieter Rabijns (Project Manager), Stefan Thommen, Andreas Hasler

Construction Management Architekturbüro Wolfensberger + Partner AG, Zurich

Cost Planning/Scheduling Architekturbüro Wolfensberger + Partner AG, Zurich

Structural Engineer Wüst Rellstab Schmid AG, Schaffhausen

Electrical Engineer Schmidiger+Rosasco AG, Zurich

Building Physics Engineer Wichser Akustik & Bauphysik AG, Zurich

MSR Visocm Engineering AG, Affoltern am Albis

Lighting Consultant TT Licht GmbH, Zurich

Plumbing Balzer Ingenieure AG, Winterthur

Colours Artistic conzept: Adrian Schiess, Zurich

Other Water treatment: Beck Schwimmbadbau AG, Winterthur

Photos Gigon/Guyer

Refurbishment of the Herdern High-rise Building

The slab-shaped high rise in western Zurich is part of the Herdern Migros headquarters, which opened in 1965 and is now listed as an industrial heritage site. Over the years, the brick facade of the 17-storey building has become weatherworn and is undergoing comprehensive refurbishment. The urban and preservation context as well as the building’s proportions are particularly significant in this respect.

The work comprises the static and energetic renovation, including HVAC renewal. On the shorter sides, the load-bearing structure is being reinforced, while the existing brick facades and parapets will be replaced and thermally insulated all around. The new fair-faced masonry walls resemble the old ones in brick format, texture and colour. New aluminium windows with triple insulation glazing meet the thermal and acoustic specifications. Inside, the ribbed concrete ceilings of the office spaces will be uncovered and will serve as temperature buffer. They create a workshop-like atmosphere that matches the industrial history and aesthetic of the building.

The setback top storey, surrounded by a roof terrace, houses an executive board room. The entire space, along with the small kitchen, will be refurbished and offers panoramic views of Zurich West and the Alps.

Location Zurich, Switzerland

Programme Refurbishment of the listed office high-rise building (built in 1965 by the architects Hans Vogelsanger, Ernst Scharzenbach, Albert Maurer),
19 floors (1 underground, 18 above ground), 500 workplaces, seminar rooms

Competition 2018, 1st Prize Gigon/Guyer Architekten and WaltGalmarini

Planning/Construction 2019–2023

Client Genossenschaft Migros Zurich

Gross Floor Area 9‘948 m2

Team G/G Planning/Execution: Stefan Thommen (Team Manager), Urs Meyer (Project Manager), Milica Brockmann, Andy Gratwohl, Arend Kölsch, Pieter Rabijns, Urh Urbancic, Luisa Wittgen, Nathalie Reiz (I), Jannis Poncelet (I)
Competition: Stefan Thommen, Filippo Cattaneo, Vladimir Dianiska, Milica Brockmann, Mickael Minghetti (I), Michelle Feige (I)

Construction Management Spiegel + Partner AG, Zurich

Landscape Architecture Lorenz Eugster Landschaftsarchitektur und Städtebau Gmbh, Zurich

Cost Planning/Scheduling Spiegel + Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Electrical Engineer Eplan AG, Reinach

Building Physics Engineer WaltGalmarini AG, Zurich

Fire Safety Migros Engineering Solutions, MGB, Zurich

Heating/Cooling Concept-G AG, Winterthur

Ventilation Engineer Concept-G AG, Winterthur

Acoustical Engineer WaltGalmarini AG, Zurich

Plumbing Concept-G AG, Winterthur

Sprinkler Consultant Banzer Beratung & Planung AG, Wil

Facade Reba Fassadentechnik AG, Chur

Door Consultant Batishield AG, Rüti

Other RDA: Enfors AG, Sempach

Photos Tom Licht (Drone image)
Luca Zanier (Site)


Refurbishment of the Parking Deck, Herdern Facility Building

Location Zurich

Programme Refurbishment and reinforcement of the listed parking deck with 568 spaces:
Replacement/refurbishment of the car park roofs, 3 new escape stairways, photovoltaic installation (approx. 4.500 m²), charging stations for electric vehicles.
The facility building and the Herdern high-rise building form an ensemble (built in 1965 by the architects Hans Vogelsanger, Ernst Schwarzenbach, Albert Maurer).

Commission 2020 (Feasibility Study)

Planning/Construction 2020–2025

Client Genossenschaft Migros Zurich

Gross Floor Area 14‘220 m2

Team G/G Feasibility Study: Stefan Thommen (Team Manager), Urs Meyer, Milica Brockmann
Planning/ Construction: Stefan Thommen (Team Manager), Lilla Kis

Construction Management Spiegel+Partner AG, Zurich

Cost Planning/Scheduling Spiegel+Partner AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Electrical Engineer Eplan AG, Reinach

Building Services Engineer Concept-G AG, Winterthur

Building Physics Engineer WaltGalmarini AG, Zurich

Fire Safety MGB, MES - Migros Engineering Solutions, Zurich

Traffic Engineer Basler & Hofmann AG, Zurich

Visualization Gigon/Guyer

Photos Tom Licht (drone image)

CreaTower I Office High-rise

In the Tech Cluster Zug, the 40-metre office high-rise Crea Tower I will be built. Together with the sculpture Semiramis, it forms a harmonious ensemble and creates a new central square.

The ten-storey office building is accessed via an arcade facing the public square. The new building has an almost square column grid with a slightly off-centre two-part core. The bays along the façades contain the workplaces in various arrangements, the meeting rooms and the recessed, two-storey terraces. The four interior bays adjacent to the core offer space for exchange and informal meetings, with spiralling double-storey rooms and open flights of helical stairs. It is this central void, with horizontal and vertical views and varying headroom, which connects the floors into a continuous, inspiring work landscape. The sequence of these diverse spaces creates a generous atmosphere, but also with scale and intimacy for the users. The terraces feature intensive planting and are arranged in staggered pairs that spatially connect three storeys.

The load bearing construction with the vault-column structure above two basement levels is lighter and has fewer CO2 emissions than a conventional construction. Here, the vault-column structure makes a significant contribution to sustainability with less mass and fewer CO2 emissions when compared to usual concrete slabs.

«CreaTower I – RFS Decken» (PDF Downlaod)
Lecture by Philippe Block and Mike Guyer at «15. Schweizer Betonforum», 07.06.2023, ETH Zurich

Location Zug, Switzerland

Programme Office high-rise (40 m) with 450 - 480 workplaces,
foyer, meeting rooms, cafeteria,
ground floor with public areas: café/ bistro

Feasibility Study 2022, 1st Prize

Planning/Construction 2023–2027

Client Urban Assets Zug AG, Zug
User: VZ-Depotbank AG

Gross Floor Area 13‘272 m2 (competiton)

Team G/G Competition: Stefan Thommen, Carlo Magnaguagno, Dylan Kreuzer, Sophie Ballweg
Planning/Construction: Stefan Thommen (Team Manager), Daniela Schadegg (Project Manager), Ivana Beljan

Construction Management Büro für Bauökonomie AG, Lucerne

Total Contractor General Planning:
Gigon/Guyer and Büro für Bauökonomie AG, Lucerne

Landscape Architecture Bischoff Landschaftsarchitektur GmbH, Baden

Cost Planning/Scheduling Büro für Bauökonomie AG, Lucerne

Structural Engineer Walt Galmarini AG, Zurich
Vaulted Ceilings (RFS): Vaulted AG, Zurich

Electrical Engineer Jules Haefliger AG, Lucerne

Building Physics Engineer Lemon Consult AG, Basel/ Zurich

Fire Safety Jules Haefliger AG, Lucerne

MSR Jules Haefliger AG, Lucerne

Heating/Cooling 3-Plan Haustechnik AG, Winterthur

Ventilation Engineer 3-Plan Haustechnik AG, Winterthur

Acoustical Engineer Lemon Consult AG, Basel/ Zurich

Lighting Consultant Reflexion AG, Zurich

Plumbing 3-Plan Haustechnik AG, Winterthur

Sprinkler Consultant Josef Ottiger + Partner AG, Rothenburg

Facade Dr. Lüchinger+Meyer Bauingenieure AG, Zurich

Door Consultant Jules Haefliger AG, Lucerne

Traffic Engineer Schneiter Verkehrsplanung AG, Zurich

Sustainability Lemon Consult AG, Basel/ Zurich

Other Photovoltaic System
facade: Dr. Lüchinger+Meyer Bauingenieure AG, Zurich
roof: Jules Haefliger AG, Lucerne
Smoke Protection Pressure System (RDA): Enfors AG, Sempach

Model Modellbau Zaborowsky GmbH, Zurich

Visualization Ponnie Images, Aachen (Germany)

Extention Canton School Reussbühl

Location Lucerne

Programme New building for 18 classes (550 students) with single and double gymnasium,
outdoor sports facility and new design of the campus

Competition March – July 2022, 1st Prize

Gross Floor Area 11‘809 m2

Competition Organzier Finanzdepartement Kanton Luzern

Team G/G Mike Guyer, Stefan Thommen, Carlo Magnaguagno, Dylan Kreuzer, Sophie Ballweg, Vanessa Ebert (I), Thea Bonatz (I)

Landscape Architecture antón landschaft gmbh, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Building Services Engineer 3-Plan Haustechnik AG, Winterthur

Visualization Ponnie, Cologne, Germany

Extension Housing Development Brunnenhof

Location Zurich

Programme High-rise building 40 m
Ground floor: public use, common room
1st–2nd floors: office space
3rd–12th floor: 20 5.5-room apartments

Commission 2020

Planning/Construction 2020–2028
ARGE Erweiterung Brunnenhof
Architecture: Annette Gigon / Mike Guyer Architects, Zurich
Construction Management: Güntensperger Baumanagement AG, Zurich

Client Stiftung Wohnungen für kinderreiche Familien, Zurich
Client’s Representative: Basler & Hofmann AG, Zurich

Gross Floor Area 4‘572.8 m2

Team G/G Pieter Rabijns (Team Manager), Ivana Beljan, Jannis Poncelet (I)

Landscape Architecture Uniola AG, Zurich

Structural Engineer Meichtry & Widmer AG, Zurich

Electrical Engineer IBG Engineering AG, St. Gallen

Building Services Engineer Balzer Ingenieure AG, Winterthur

Building Physics Engineer Durable Planung und Beratung GmbH, Zurich

Fire Safety Balzer Ingenieure AG, Chur

Acoustical Engineer Durable Planung und Beratung GmbH, Zurich

Coordination Balzer Ingenieure AG, Winterthur

Colours Adrian Schiess, Zurich

Other Project plan: Suter von Känel Wild Planer und Architekt AG, Zurich

Visualization Gigon/Guyer

New Social Insurance Centre WAS (Wirtschaft Arbeit Soziales)
Areal Eichhof West

Location Kriens, Switzerland

Programme Offices 700 workplaces, seminar rooms, canteen, cafeteria

Competition 2020, 1st Prize

Planning/Construction 2020–2025

Client WAS Immobilien AG, Lucerne

Gross Floor Area 24‘540 m2

Team G/G Competition: Stefan Thommen, Lukas Kübli, Dario Caccialupi, Jan Zimmermann (I)
Planning/Construction: Christian Maggioni (Team Manager), Matthias Clivio (Project Manager), Damien Andenmatten, Christoph Lay, Franzis Gericks, Roman Vetterli, Emilia Lienhard (I), Lilo Nöske (I), Jannis Sachmerda (I), Christoph Stahel (I), Zoe Steurer (I), Diana Strässle (I)

Total Contractor General Planning (preliminary design phase until total contractor tendering )
GP WAS GmbH, Lucerne:
GKS Architekten Generalplaner AG, Lucerne
with Gigon/Guyer Architects;
Total Contractor (from total contractor tendering)
Anliker AG Generalunternehmung, Emmenbrücke

Landscape Architecture Planting courtyard and roof terraces: Lorenz Eugster, Zurich

Cost Planning/Scheduling TGS Bauökonomen AG, Lucerne (preliminary design phase until total contractor tendering)

Structural Engineer Competition: EBP Schweiz AG, Zurich
Planning/Construction: CES Bauingenieur AG, Hergiswil

Electrical Engineer Jules Häfliger AG, Lucerne

Building Services Engineer Competition: EBP Schweiz AG, Zurich
Planning/Construction: 3-Plan Haustechnik AG, Winterthur

Building Physics Engineer 2226 AG, St. Gallen

Fire Safety Technik im Bau AG, Lucerne

Facade Feroplan Engineering AG, Zurich

Door Consultant PZM Luzern AG, Horw

Signage Designalltag Rinderer GmbH, Winterthur

Other Restaurant Planning: Creative Gastro Concept & Design AG, Hergiswil

BIM GKS Architekten Generalplaner AG, Lucerne (preliminary design phase until total contractor tendering)

Visualization Gigon/Guyer

Replacement of Hangenmoos Housing Estate

A new housing development on the Hangenmoos site in Wädenswil replaces a predecessor from the 1960s. The elongated three-hectare plot lies adjacent to the historical town centre and is characterised by the orientation towards Zugerstrasse and the sloping terrain to the west.

With the free placement of the buildings in a park-like area, the dense residential development makes reference to the idea of the garden city. The arrangement of the buildings is defined by various factors: the terrain profile, the orientation of the apartments, the view of the lake, the neighbouring buildings and the busy road. Themes such as the continuous, differentiated outdoor space, staggering of volumes, framed and panoramic views determine the composition of the buildings.

Three residential typologies and different apartment contribute to the diversely mixed housing project, which is being realised in stages.

The area is separated from the busy Zugerstrasse by slim, staggered buildings. Here the staircases are arranged along the facade, the living and dining rooms are oriented on both sides, while bedrooms and balconies only face the quiet park.

Placed behind, on the rising hillside and along the quieter Holzmoosrütistrasse, are five to seven storey buildings. Their orientation is guided by the terrain and the view of the lake. These large and prominent structures form the backbone of the new development and have the highest density. Three to six apartments are grouped around an internal access core on each floor. The larger apartments are laid out around a corner or as dually oriented types, the smaller ones face the lake on one side. Despite their limited floor area, a variety of inside and outside views give the apartments depth and generosity. Together with the lower blocks on Zugerstrasse, the large building volumes form a differentiated green space with a network of pedestrian paths.

In the buildings of the third typology, four apartments are planned per floor. The two five-storey buildings are aligned parallel to the terrain’s contour lines and offset from one another. Their cross-shaped floor plan with an internal circulation core offers well-lit and spacious apartments with openings on three sides.

The arrangement and composition of the volumes create a complex of related building structures, which form a whole despite the varied conditions of the site. Multiple visual connections and views open up the outdoor spaces, helping to achieve the intended density with a site-specific scale.

Location Wädenswil, Switzerland

Programme 10 building volumes,
285 apartments with 1.5–5.5 room apartments,
1 shared apartment for assisted living Foundation Bühl,
1 double kindergarden, 1 day care center,
7 office spaces

Competition 2-phases
2014, 1st Prize

Planning/Construction 2015–2021–2023

Client Hangenmoos AG, Wädenswil

Gross Floor Area 59‘650 m2

Team G/G Planning/Construction: Christian Maggioni (Team Manager), Daniela Schadegg (Project Manager), Franziska Bächer, Stefanie Bittig, Christoph Dober, Andy Gratwohl, Dana Hemmi, Leyla Ilman, Lilla Kis, Christoph Lay, Carlo Magnaguagno, Anne Spiegler, Lukas Taller, Urh Urbancic, Philippe Volpe
Competition: Stefan Thommen (Team Manager), Rodrigo Jorge, Andy Gratwohl, Leyla Ilman
Competition Revision: Stefan Thommen (Team Manager), Thomas Möckel, Leyla Ilman, Christoph Dober, Milica Vrbaski

Construction Management Hotz Partner AG SIA, Wädenswil

Landscape Architecture Commissioned Study: Studio Vulkan Landschaftsarchitektur GmbH, Zurich
Planning: vetschpartner Landschaftsarchitekten AG, Zurich

Structural Engineer WaltGalmarini AG, Zurich

Electrical Engineer Enerpeak AG, Dübendorf

Building Services Engineer PZM Zürich, Zurich

Building Physics Engineer Braune Roth AG, Binz

Fire Safety Enerpeak AG, Dübendorf

Traffic Engineer Enz & Partner GmbH, Zurich

Colours in cooperation with Harald F. Müller, Singen, Germany

Model Zaborowsky Modellbau, Zurich

Photos Philip Heckhausen, Zurich

Swiss Museum of Transport – Multi-purpose Building «House of Energy»

The new multi-purpose building replaces the former “Rail Transport Hall 1”, designed by Otto Dreyer, from the founding years of the Swiss Museum of Transport. The new structure is intended to house several uses, as its name suggests. Like its predecessor, it provides exhibition spaces at ground floor level, now for changing exhibitions alongside the continuing display of rail transport items. Furthermore, the ground floor of the multi-purpose building features a welcoming second entrance area for the museum complex facing Haldenstrasse and the railway station “Verkehrshaus Luzern”, which opened in 2007. Connected to this are also a shop and other entrances for the uses in the upper floors.

On the first floor, three new conference rooms are created as extension of the current conference functions located in the “Futurecom” building. From the foyer the participants have a view into the high exhibition space and also out to the “Arena”. The three floors above are reserved for office use. They are arranged around an elevated green patio and primarily serve the museum administration as well as associated organizations and exhibition partners. The basement not only contains additional utility spaces, but also the new central energy plant of the entire museum complex – a heat pump supplied by lake water.

The new volume is larger than the preceding building and approaches the height of the adjacent existing IMAX movie theatre building. The polygonal plan shape reaches over to the cylinder structure with open air balconies. Together, they form an interstitial space for lighting and logistics. Toward Haldenstrasse, the building cantilevers above a weather protected zone at the entrance and an outside exhibition area. Access for locomotives to the existing “Rail Transport Hall 2&3” stays open.

High structural requirements imposed on the foundation by the difficult substrate as well as the desired column-free exhibition hall with a width of up to 30 m justify the choice of reinforced concrete as building material for the load-bearing construction and the stairway cores. The floor slabs of the offices provide the necessary thermal inertia and accommodate the heating loops of the thermal activated building system (TABS) as well as acoustic absorber elements – thus eliminating the need for further cladding while optimizing the room height. Insulation thickness of up to 30 cm and a moderate proportion of openings with ribbon windows are expected to result in good energy consumption figures. The new building is certified according to Minergie-P.

In analogy to the versatile usage of the building, various and different demands must also be met by the facade envelope. In addition to thermal insulation and summer sun protection, the exterior wall should also be acoustically effective, i.e. dampen reflections of road noise in the direction of the “Arena” and the residential buildings further up the slope. Like most of the buildings in the museum complex, it has a metal facade. In the case of the multi-purpose building, this consists of standardized metal cassettes, such as are frequently used as support structures in industrial construction. The perforated sheet metal, in combination with the insulating layers behind it, meet the mentioned requirements and form the concealing, yet see-through and translucent dress, which also acts as a brise-soleil and, moreover, serves as a support for the photovoltaic elements.

Applying photovoltaics not only on the roof but also on the facades is a challenge for the design and still also for the acceptance. The monocrystalline PV elements are distributed in varying density according to the different exposures of the facades. The arrangement in groups of eight elements, each with a gap, was developed with the artist and geometry engineer Urs Beat Roth. The layout of the panels, superimposed on the ribbon windows and the grid of the metal cassettes, results in a variable interplay. It is an attempt to make the useful energy producers, which are nevertheless often deemed unsightly, an integral part of the façade design, without compromising their efficiency through coatings or custom glazing.

Location Lucerne, Switzerland

Programme Exhibition space, shop, conference rooms, offices

Commission 2017

Planning/Construction 2017–2023

Client Swiss Museum of Transport, Lucerne

Gross Floor Area 7'985 m2

Team G/G Planning/Construction: Christian Maggioni (Team Manager), Philippe Volpe (Project Manager), Anne Spiegler, Chee Xu, Milica Brockmann

Construction Management Büro für Bauökonomie AG, Lucerne

Structural Engineer Schubiger AG Bauingenieure, Lucerne

Electrical Engineer Scherler AG, Lucerne

Building Services Engineer Markus Stolz + Partner AG, Lucerne

Building Physics Engineer RSP Bauphysik, Lucerne

Fire Safety GRP Ingenieure AG, Rotkreuz

Facade Rood AG Metallbauplanung, Stans

Other Artist / Geometry engineer (Layout of the PV elements):
Urs Beat Roth, Zurich

Visualization Indievisual, Zurich

Photos Seraina Wirz, Zurich
Film: Severin Kuhn, Zurich