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Eawag Forum Chriesbach

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach

Photographer: Roger Frei

Eawag Forum Chriesbach
Eawag Forum Chriesbach
Eawag Forum Chriesbach
Eawag Forum Chriesbach
Eawag Forum Chriesbach
Architect
Bob Gysin + Partner BGP Architekten ETH SIA BSA
Engineers/Specialists
3-Plan Haustechnik, Winterthur, Henauer + Gugler, Zürich, Büchler + Partner, Zürich, Kopitsis Bauphysik, Wohlen
Further Specialists
Mebatech, Baden; Hansruedi Preisig, Zürich, Ueli Kasser, Zürich
Location
Western Europe - Switzerland - Zurich
Climate Zone
temperate
Design status
build
Date of completion
2005
Type
Office
Site area (m²)
5174
Footprint (m²)
1886
GFA (m²)
8533
NFA (m²)
5012
NFA/GFA
0.587
Density
1.649
Gross Volume (GV) (m³)
38615
Building Costs
29544000 CHF
Building Costs / m² GFA
3462.323
Building Costs / m² NFA
5894.653
Building Costs / m³ GV
765.091
Primary Energy (kWh/m²a)
36.3
Heating Energy (kWh/m²a)
2.7
Cooling Energy (kWh/m²a)
1.2
Use of renewable ressources - low tech
natural cross ventilation, use of high thermal mass, others
Use of renewable ressources - high tech
solar heating, photovoltaics, geothermal energy use
Key Sustainability aspects
solar building integration, vernacular building strategies, public spaces, accessability for disabled, renewable building materials, recycling and reuse, ecological building materials, innovative bulding materials, integrated planning process, participation of users in planning process, use of innovative design tools, zero energy design
Sustainability rated
Passive House
Social and ethical responsibility

Forum Chriesbach provides a working environment that promotes social coherence and scientific interaction. The feeling of openness and transparency in the building is uplifting, contributing to the psychological wellbeing of the occupants.
The client, design team, and building users worked together during the design phase to jointly create a building that embodies a futureoriented philosophy shared by all parties. The building supports Eawag's progressive research activities in the service of society. It accommodates research, serves as a test object, and stands as evidence that ambitious objectives can be affordable and feasible.

Ressource efficiency and environmental impact

Forum Chriesbach is energy efficient and relies on passive energy sources instead of fossil fuels. It consumes roughly as much heating energy as a normal single-family house although it is forty times larger. It produces a third of its own electrical power needs. Because the building has no conventional heating and air-conditioning systems, CO2 emitted by the building itself during operation is near zero.
Gray energy is considered in the design; recycled and recyclable materials are incorporated. As an infill project on the client's campus, Forum Chriesbach applies the principle of dense development. Urban density reduces energy consumption and emissions caused by longer transportation routes, and serves to conserve green zones. The building employs total water management, including urine separation, waterless urinals, solar water heating, rainwater treatment and use, and rainwater retention on site.

Economic lifecycle perfomance

With an annual primary energy consumption of 36.3 kilowatt hours per m2, Forum Chriesbach is four times more efficient than prescribed by Swiss energy conservation law; this helps keep operating costs low. The construction cost was within the expected range for standard Swiss office buildings of comparable size.
Incorporating high-quality and durable materials, the building promises long service life, central to economic performance. It is designed to be easy to adapt and ultimately to dismantle and recycle. The location of the building on the client's campus reduces travel time and expenses of the employees, promoting interaction and making operations more economical and productive.

Contextual performance and impact

The striking image of Forum Chriesbach gives Eawag a stronger identity and an unmistakable and progressive public image as a scientific research institute. In its context within the client's campus, the building improves orientation, adds visual hierarchy, and integrates attractive and valuable outdoor recreational space.
The site is landscaped for ecological and aesthetic value, but not as an ornamental park. The entire site design is integrated into Eawag's total-water management concept.
Forum Chriesbach has won several design awards and received widespread recognition as a successful example of energy-efficient architecture.