Just a Minute module: the Nepalese mountain region

    Sustainable Design

    Just a Minute – A deployable bamboo emergency shelter for the Nepal earthquake

    A temporary shelter that can be set up in just a few minutes (made from bamboo, jute and recycled wool from donated clothing) which can be assembled by just a few volunteers to help rebuild the community in the wake of the earthquake.

    2015 · Nepal · Temporary emergency housing · Sustainable Design

    A house that unfolds in just a few minutes

    On 25 April 2015, a magnitude 7.8 earthquake devastated Nepal: nearly 9,000 victims, over 600,000 homes destroyed, entire rural communities forced to live in tents for months. It is against this backdrop that Just a Minute was conceived, a project by Barberio Colella Architetti for an emergency home designed to be quick to assemble, economical, durable and, above all, capable of meeting the real needs of Nepalese families: space for four to ten people, local or regional materials, energy self-sufficiency and adaptability to the country’s diverse climates, from the Terai plains to the Himalayan highlands.

    The core concept is a fold-out structure. When closed, the house occupies an area of 2.5×4 metres, compact enough to be transported on a standard vehicle to the destination site. Once on site, the building envelope unfolds around a permanent core made of OSB panels (1.5×4 metres), which houses the facilities: a bathroom with a chemical toilet, shower, aluminium washbasin, electric hob and a 30-litre water tank. The structure thus measures 4×7.11 metres, with two side rooms (a living area and a sleeping area) and a small covered outdoor area measuring 1×4 metres.

    The load‑bearing structure consists of 60 mm diameter bamboo poles (uprights, cross-beams and roof beams), braced with 30 mm diameter bamboo poles arranged in St Andrew’s crosses. The poles are drilled in the centre and at the ends to allow the frame to unfold; once open, the system is secured with wing nuts. The building envelope consists of a double-layer jute canvas with a layer of recycled wool padding in between (made from clothes and jumpers donated through charity campaigns) which provides thermal insulation against both heat and cold. An external waterproof membrane, stretched away from the jute using spacers, protects against rain and snow whilst allowing the interior spaces to breathe. The short facades are made of polycarbonate mounted on a bamboo frame, with small additional panels of bamboo canes that function as reversible solar shading devices (removable in winter, repositionable in summer).

    The single-pitch roof is designed to accommodate solar and photovoltaic panels, making the unit energy self-sufficient. Rainwater is collected from the roof and channelled into the central core for reuse. The true value of the project, however, lies in its social dimension: the units are designed to be grouped together (twin houses, four-unit houses, small villages) recreating the community fabric shattered by the earthquake. Fabrication requires neither complex technologies nor skilled labour: the process can be organised like an assembly line (one team prepares the bamboo modules, another the OSB core, another the textile building envelope), and parts of the components can be prefabricated off-site to further speed up assembly. Just a Minute is not designer architecture: it is an infrastructure for community reconstruction.

    Renders & Photos

    Exterior of a temporary deployable house in Nepal
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    Exterior view of the house when fully extended: 4×7.11 m with a single-pitch roof designed to accommodate solar and photovoltaic panels.

    Technical specifications

    Location
    Nepal, destination: areas affected by the earthquake of 25 April 2015
    Year
    2015
    Client
    Project developed in response to the post-earthquake humanitarian emergency
    Typology
    Temporary emergency housing, a modular, expandable housing unit
    Dimensions – closed (for transport)
    2.5 × 4 m
    Dimensions – open
    4 × 7.11 m (including 1 × 4 m of covered outdoor space)
    Capacity
    4–10 people (with use of the living room for sleeping and bunk beds in the sleeping area)
    Status
    Emergency design concept
    Designers
    Maurizio Barberio, Micaela Colella (Barberio Colella Architects)
    Materials – structure
    Bamboo poles Ø 60 mm (uprights, cross-braces, roof) + Ø 30 mm poles for cross-bracing; wing nuts for quick assembly
    Materials – building envelope
    Double-layer jute canvas + recycled wool filling (from donated garments/jumpers) + waterproof outer membrane stretched with spacers (for breathability)
    Materials – short facades
    Polycarbonate panels (20 mm) mounted on a bamboo frame; small bamboo canes used as reversible solar shading devices
    Materials – central core (1.5×4 m)
    50 mm OSB panels; interior fittings: chemical toilet, shower, aluminium washbasin, electric hob, 30-litre water tank
    Flooring
    30 mm OSB panels + laminated bamboo flooring
    Roof
    Single-slope roof, designed for solar and photovoltaic panels; drainage system to collect rainwater and direct it to the central tank
    Aggregability
    A single unit that can be combined to form semi-detached, four-unit or small villages

    Technical drawings

    Assembly diagram for the fold-out bamboo module
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    The assembly diagram: from the closed configuration for transport to the module deployed on site.

    How can we provide decent, rapid and durable housing for communities affected by a disaster?

    The standard responses to post-disaster housing emergencies are well known: tent cities, shipping containers, prefabricated buildings. All have severe limitations: inadequate thermal comfort, limited lifespan, inability to adapt to different climates, and high cost relative to the quality they offer. Above all, they rarely take into account the community aspect of reconstruction: a family affected by an earthquake needs not only shelter, but to return to living within their own community. Just a Minute tackles these limitations with a clear concept: a temporary home that can be set up in minutes, built using local and regional materials (bamboo, jute, recycled wool), which can be joined together to rebuild small villages, and is energy self-sufficient thanks to PV on the roof. Fabrication requires neither complex technology nor skilled labour: the house is designed to be assembled by volunteers following simple instructions.

    Frequently Asked Questions

    The house arrives on site pre-assembled in a closed configuration measuring 2.5×4 m, on a standard vehicle. Once positioned, the bamboo pole frame unfolds around the permanent OSB core thanks to through-holes made in the centre and at the ends of the bamboo poles; unfolding is facilitated by the taut outer membrane, which acts as a continuous building envelope. The structure measures 4×7.11 m. Final fixing is carried out using wing nuts, reversible mechanical connections, without welding or glue. The only task carried out after opening is the laying of the floor, which is placed beneath the house during transport. Assembly requires few volunteers and no skilled labour.

    Bamboo is an abundant resource in the region (Nepal, northern India, south-western China); it has a strength-to-weight ratio comparable to steel for certain dimensional ratios; it is lightweight (easy to transport even on rough roads); and it has a very rapid growth cycle (3–5 years). The triangular geometry of the St Andrew’s cross bracing (30 mm diameter bamboo poles stretched between 60 mm diameter uprights) exploits the intrinsic rigidity of the triangle to ensure stability without requiring complex joints. For an emergency, bamboo offers the right balance between structural performance, local availability, lightness and low environmental impact.

    Nepal has three very distinct climate zones: the Terai (a hot, humid lowland), the temperate hill zone, and the Himalayan plateau (bitterly cold). Just a Minute responds to this variety with a layered envelope: double-layer jute canvas (a breathable, low-cost material produced locally in Nepal and India) with a layer of recycled wool padding in between, obtained from clothes and jumpers donated through charity campaigns. Wool is an excellent natural insulator, protecting against both cold and heat. An external waterproof membrane, stretched using jute spacers, protects against rain and snow whilst allowing internal breathability. The short polycarbonate facades let in light and can be opened for ventilation; the bamboo poles used as solar shading devices are reversible: they are removed in winter and added in summer.

    A single module typically accommodates between 4 and 10 people, the high-end segment is reached by using the living area for sleeping and installing bunk beds in the sleeping area. This capacity is designed for extended families, which are common in rural areas of Nepal. The central OSB core houses the essential facilities to ensure a good standard of hygiene: a chemical toilet, shower, aluminium washbasin, electric hob and a 30-litre water tank. The modularity of the system also allows multiple units to be combined to create larger homes (double, quadruple) or small villages.

    The roof is a single-pitch structure specifically designed to accommodate solar thermal and photovoltaic panels. The number and power of the panels depend on the available budget and the climatic conditions (solar radiation in Nepal is generally high). The panels power the interior lighting, the electric hob in the utility area and (when appropriately sized) can meet small-scale refrigeration needs. The roof also collects rainwater, which is channelled into the central tank for reuse: a solution that drastically reduces dependence on water networks, which are often damaged following an earthquake.

    Yes, grouping is one of the design principles of Just a Minute. Individual units can be arranged side by side (double or quadruple units) or in more complex urban configurations, forming small temporary villages that recreate the community fabric shattered by the earthquake. This approach addresses a specific need: after a disaster, communities are not rebuilt solely through individual shelters but through neighbourly relationships, shared spaces and communal pathways. Just a Minute is designed to foster this, not merely to produce isolated houses.

    Just a Minute is a design concept developed by the studio in response to the post-earthquake humanitarian emergency of 2015. Its fabrication requires neither complex technologies nor skilled labour: the project is designed to be distributed to NGOs, humanitarian agencies and public bodies in countries at seismic or hydrogeological risk, which can adapt it to their own contexts. ---

    Do you work with communities affected by disasters or facing housing insecurity?

    If you are developing temporary housing projects in contexts of humanitarian emergencies, post-disaster reconstruction or housing insecurity, we can discuss an approach based on local materials, deployable systems and community-led scalability. BCA designs everything from the initial concept through to construction details that can be adapted to different contexts.

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