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THE SOLAR CITY LINZ, AUSTRIA

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Prepared by:

YOUSEF ABUJUBBA

presented to :

PROF.DR.IR. RIZA ATIQ RAHMAT

Location

Linz is one of the biggest cities in

Austria, located at the Danube

river, the capital of the federal

state Upper Austria, shaped by

industry and typical central

European urban development.

SolarCity Linz-Pichling; Austria , 1992 SolarCity Linz-Pichling; Austria , 2006

Scope

Scope

Client: Municipality of Linz

Financing: Municipality of Linz, European Community

Project: has been constructed in 2005

Master plan: Roland Rainer

Architects: READ (Renewable Energy in Architecture and

Design):Thomas Herzog + Partners

Environmental engineer: Norbert Kaiser

Landscape architect: Latz + Partner

Consultant: Renzo Piano Building Workshop

Local coordination: Heinz Stogmuller

Total Cost 190.000.000 € with Residential buildings

125.000.000 € and Infrastructure 65.000.000 €

SolarCity Objectives

Low energy construction, solar architecture.

Future –oriented approach to energy supply and disposal.

Issue of local recreation and leisure time .

Creation of a modern sociocultural, family-oriented

infrastructure .

Sustainable traffic concept.

Common, group-specific marketing campaign.

Project stages time

1992 Master plan Prof. Rainer

1994 Local-Sustainable-Development-Planning (Lassy)

1996 Urbanistic Ideas completion (Treberspurg)

1997 Landscaping ideas completion (Dreiseitl)

1998 Architectural completion

2005 Completion

Urban Planning

The SolarCity designed within 1300 apartments + central

infrastructure ( local shops, sociocultural facilities, school

center, kindergarten, pastoral center, sports park).

Central tram stop ( max. walking-distance 300 m to

apartments).

Building designed of 2-4 stories high and the orientation to

the south, avoidance of shadowing.

Part of green spaces 60%, distance to the nature protection

area “Traun-Danube-Alluvial meadows” 50-80m.

Project organization

The following organisational measures have been taken to

deal with inter-entrepreneurial activities:

• Installation of a project supervisory board as consulting

organ during the planning phase.

• A central office coordinates the entire operational process.

• The Advisory Council is composed of top-level of

politics, administration, associations and enterprises .

• Development of a computer-assisted communications and

administration network via email and Internet.

• Documentation of the entire course of the project.

• Determination of the project objectives and contents, and

the project organisation structure in a project contract.

The visualization

The visualization was developed with the goal of

promoting the interactive involvement of all relevant

parties (municipal administration, architects, housing

developers, neighboring residents, future residents) in the

planning and realization process at an early stage as a

virtual realty model of the SolarCity project.

Center model …

Kindergarten model….

Solar Architecture

Low-energy houses , 3 passive houses.

Compact construction and upgraded

thermal isolation .

Utilization of solar energy ( active and

passive).

Ecological building components.

Sociocultural Planning

Quality agreements with housing

developers.

Concepts for resident participation .

City district management office .

Create a uniform marketing concept

with main focus on non-technical

aspects such as quality of life and the

environment.

Landscape Planning

“ Hilly park” + large recreational

facilities ( lake with swimming area,

bike path , sport area etc.)

70% increase of the lake.

Hiking trail through the nature

protection area.

Revitalization of the stream .

Construction of a sport area.

Power Supply

Passive : low energy houses after

principles of solar architecture.

Active : solar panels for mainly hot

water.

District heating for all buildings “

CHP with natural gas and biomass

“.

Construction facade panel

Wall Construction from outside to inside:

• Glass ESG(Single safety glazing) , 6-8 mm

• Air layer, 31 mm

• Solarwabe (honeycomb), 50 mm

• Panel rear, 4 mm

• Leveling insulation, 40 mm

For maximum format 1,250 x 3,050 mm

high and oblong format possible Coloration

of the solar honeycombs required Glass

with or without texture .

The solar facade functional principle

The honeycomb cellulose act as a solar absorber

At low position of the sun(winter) the solar load penetrates

into the solar honeycomb and heat up.

At high position of the sun(summer) the honeycomb shade

itself.

An additional mechanical sun-shading isn't needed.

The temperature difference between living space to outer

climate is balanced

Wall Units

Quick progress of construction

work.

Parallel production in the work.

Delivery of the envelope, incl.

windows.

No building moisture in the

exterior wall.

Sound proofing

Wooden Framework 16 cm.

Brick Wall 38 cm, double-sided

plaster.

Fire protection system

After approx. 4 minutes the flames

beat from the window area on the

facade.

The fire-proofing coat foamed up as

a protective layer.

Later on the aluminum parts

started to melt.

The glazing of the panel directly

over the window shattered.

An independent spread of fire

couldn't be established after 30

minutes, the examination was

positive.

Ventilation system

Air Tightness

Proff. RizaAtiq

High-quality windows

Fixed glazed window parapet

with soundproofing system.

Fixed crossbar window parapet

with soundproofing system.

Disposal of wastewater for the SolarCity

Recovering nutrients of waste water instead of flushing

them away by using them in agriculture.

Fertilizer for agricultural purposes.

The black water and grey water are filtered in a

vermicomposting tank where, after the addition of

sufficient bulking material, the solids are pre-composted.

The rest is used for compost

The overflow from the vermicomposting tank is clarified in

a constructed wetland post-composting is carried out at a

compost site after one year and the mature compost can be

used in gardening and landscaping or as fertilizer for

farming.

The Rainwater Concept

Rainwater is dealt with as and where it occurs, in a

surface-oriented, decentralized system that makes the

natural rainwater cycle visible and comprehensible.

The drainage, collection and disposal of rainwater is

achieved mainly by means of gutters, retention hollows and

vegetated swales.

These are integrated into a coherent, interconnected

system that uses the Millstream as a receiving water body

in the southern part of the district and the alluvial

meadows as a recipient in the northern part.

The aforementioned elements of rainwater management

are an integral part of the planning of the open spaces.

Traffic in SolarCity

Mobility

Path network for pedestrians and bikers.

Reduction of car traffic : nearly car-free area,

underground car-parks.

Local public transports :

- linking the tram line directly to the city center of Linz.

- bus line is extended.

Railway connection .

Bypass road Ebelsberg.

Traffic

Implemented these principles consistently:

• constructing all buildings in accordance with low-energy.

• providing underground parking for the 3.000 residents of

the SolarCity as well as an adequate number of parking

places for visitors.

• Motor vehicle traffic was reduced to an unobtrusive

minimum by routing it only along the promenade and to

the individual underground parking lots in order to

protect the dwelling environment and the children.

• Within the settlement, maximum priority shall be given to

pedestrian and cycle traffic.

Conclusion

Linz; Good Sustainable Practice as specified by the United

Nations and the international community at large as

successful initiatives which:

• Have a demonstrable effect and tangible impact on

improving people’s quality of life;

• Are the result of effective partnership between the public,

private, and civic sectors of society;

• Are socially, culturally, economically and environmentally

sustainable.

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