Incremental Construction

Low-cost modular housing scheme

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    Global finalist entry 2015 - Incremental Construction: Low-cost modular housing scheme

    Detailed building information model with all process and procurement information.

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    Global finalist entry 2015 - Incremental Construction: Low-cost modular housing scheme

    Left: First prototype was built on the Campus of the Addis Ababa University. Right: The second prototype is located in the sub-city Lideta, an informal settlement in the core of Addis Ababa. It is now used as a local office for the self-empowerment campaign.

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    Global finalist entry 2015 - Incremental Construction: Low-cost modular housing scheme

    Vibrant low income settlement, Lideta, with the second prototype of the SICU building in September 2013.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    The SICU prototype is a compact double-story unit comprised of a prefabricated concrete lower structure and lightweight eucalyptus frames for the upper floor. After all parts have been prefabricated, the building was constructed in ten days by 35 students from three countries and now stands erect in a typical neighborhood of Addis Ababa, serving to demonstrate an alternative housing approach and to prompt further discussions between policy makers, industry and academia.

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    Holcim Awards 2014 Africa Middle East ceremony, Beirut, Lebanon

    Presentation of the Holcim Awards Bronze 2014 for “Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia” (l-r): winners Asgedom Berhe, Dirk Donath, jury members Fasil Giorghis, Chair of Conservation of Urban and Architectural Heritage, Addis Ababa University and Howayda Al-Harithy (head of jury) Professor of Architecture, American University of Beirut; Bernard Fontana, CEO of Holcim Ltd; and winner Brook Haileselassie.

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    Holcim Awards Africa Middle East ceremony, Beirut, Lebanon

    Winners of the Holcim Awards Bronze 2014 for “Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia” (l-r) Brook Haileselassie, Dirk Donath and Asgedom Berhe.

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    Holcim Awards Africa Middle East media briefing, Beirut, Lebanon

    Dirk Donath of Bauhaus University, Germany winner of the Holcim Awards Bronze 2014 for “Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia”.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    The project is situated in an area earmarked for total renewal in a typical neighborhood of Addis Ababa, one of the fastest-growing cities in Africa. New constructions in the city predominantly use concrete frame and cast in-situ construction; and the city has banned natural materials from being used in buildings since 2009, limiting the solutions available for house construction. It aimed to investigate possibilities for an alternative urban housing unit in this context.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    SICU is situated in a compound of 150 inhabitants, most of whom have low incomes.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    The local community was present at the launch event for the assembly of the prototype.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    The prototype was also intended to initiate discussions between the different stakeholders.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    The flooring of the upper story of the house is constructed with prefabricated plywood boards.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    SICU is a semi-complete construction where the homeowners are able to finish the building themselves.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    Metal connectors were used to secure the eucalyptus frames to the wooden beams.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    Students from Ethiopia, Germany and South Sudan participated in the assembly of the prototype.

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    Students from Ethiopia, Germany and South Sudan participated in the assembly of the prototype.

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    Holcim Awards 2014 Africa Middle East ceremony, Beirut, Lebanon

    Accolades for all Holcim Awards main prize winners (l-r): Brook Haileselassie, Dirk Donath and Asgedom Berhe (Bronze), Zeynep and Onat Öktem (Gold), and Raëd Abillama, Youssef Abillama, Yasmina Khalifé and Sawsan Bou Fakhreddine (Silver).

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    Project entry 2014 Africa Middle East - Incremental Construction: Low-cost modular housing scheme, Addis Ababa, Ethiopia

    Dirk Donath, Brook Haileselassie, Asgedom Haile, Helawie Sewnet, Sarah Yusuf, Peter Dissel and Jakob Mettler.

  • Awards Bronze 2014–2015 Middle East Africa

The Sustainable Incremental Construction Unit, a modular prototype for low-cost houses to foster development of poor neighborhoods, responds to the housing challenge of rapid urbanization. Close to 90% of components including concrete elements and lightweight eucalyptus frames are prefabricated by small-scale enterprises, creating skilled employment and capacity building. The 56 sq m house can be erected by the owner in nine days, and can be extended by 28 sq m as funds become available.

By Dirk Donath - Bauhaus University, Weimar, Germany and

Ideas: Economic & Social Empowerment, Housing Needs

The Sustainable Incremental Construction Unit, a modular prototype for low-cost houses to foster development of poor neighborhoods, responds to the housing challenge of rapid urbanization.

Close to 90% of components including concrete elements and lightweight eucalyptus frames are prefabricated by small-scale enterprises, creating skilled employment and capacity building. The 56 sq m house can be erected by the owner in nine days, and can be extended by 28 sq m as funds become available.

Incremental Construction

Project authors

  • Holcim Awards 2014 Africa Middle East ceremony, Beirut, Lebanon
    Dirk Donath

    Bauhaus University

    Germany

  • Helawie Sewnet

    Addis Ababa University, Ethiopian Institute of Architecture, Building Construction & City Developmen

    Ethiopia

  • PD
    Peter Dissel

    Afro-European Engineers

    Ethiopia

  • Holcim Awards 2014 Africa Middle East ceremony, Beirut, Lebanon
    Asgedom Haile

    Addis Ababa University, Ethiopian Institute of Architecture, Building Construction & City Developmen

    Ethiopia

  • SY
    Sarah Yusuf

    Addis Ababa University, Ethiopian Institute of Architecture, Building Construction & City Developmen

    Ethiopia

  • Holcim Awards 2014 Africa Middle East ceremony, Beirut, Lebanon
    Brook Teklehaimanot

    Addis Ababa University, Ethiopian Institute of Architecture, Building Construction & City Developmen

    Ethiopia

  • JM
    Jakob Mettler

    Bauhaus University

    Germany

Project updates