The intervention aims to respond to a growing demand for the hiking route and the recreational area and lookout over the rivers Miño and Deva in O Valiño, and at the same time order the place and complement the existing environment with a space capable of responding to the needs and demands from visitors and local citizens. For the execution of the toilets, we opt for a polished concrete platform with raised metal perimeter of the natural terrain of MacAdam and on it a container formed by prefabricated reinforced concrete modules and facades composed of a bioclimatic skin of corten steel and glass, placed with different dispositions like outer skin and defensive anti vandalic, having inside a facade of laminated glass on steel frames. The interconnection lobby is covered with a bioclimatic roof, with a small waiting area with a trellis.

Project name: Trado sustainable toilets, Pontedeva_Ourense. Spain
Company name: Muiños Otero López Arquitectura_MOL Arquitectura
Project location: Trado, Pontedeva_Ourense. Spain
Completion Year: 30/01/2018
Budget: 34.599,62€

Other participants:

Promoter: Concello de Pontedeva,
Builder: José de Trado S.L.
Other contracts: Electricidad: J. Araújo S.L, Fontanería: Sindo, Pinturas Miguélez Decoración,  González Maderas, Materiales de Construcción García Carrera, S.A., Cristalería Nova
Metallic Constructions: CUESME
Lighting: Lledó
Flooring: FINSA
Photo credits: Héctor Santos-Diez

Ecological Public Restrooms in Trado By MOL Arquitectura - Sheet1
©Héctor Santos-Diez

The basic premise of the intervention is the integration with nature, and the search for a harmonious relationship, but with a certain contrast between the piece to be executed and the environment. It is intended that this small building act as a functional sculptural element, on the shores of the rivers Miño and Deva.

_integration in the environment and kilometer zero

For all materials and construction systems, we choose proximity and sustainability options. The suppliers, construction companies and contractors are from the same area of ​​intervention.

The wood used comes from local wood, from sustainable silviculture of Galician pine and has the FSC seal. The vegetation of the trellis of the building, formed by wisteria, allows the vegetation-building hybridization.

Ecological Public Restrooms in Trado By MOL Arquitectura - Sheet3
©Héctor Santos-Diez

_bioclimatic operation

The skin of the toilet module itself is permeable, as well as self-supporting, which facilitates its bioclimatic functioning, since it ensures its natural ventilation and search for sunlight. The Z geometry of the vestibule cover, as well as the facades, facilitates the collection and evacuation of rainwater naturally, as well as natural ventilation. The trellis formed by a wisteria works as a vegetable brisoleil, to mitigate the effect of sunlight in the gazebo area,

The installation of lighting, in addition to using energy-saving LED luminaires, works with an astronomical clock and a photovoltaic cell to optimize its operation. The challenge was that the consumption of the whole building was less than 100w. The lighting, in addition to ensuring the use of the building at night, allows the module to function as a luminary, becoming a firefly visible from the valley.

Regarding the installation of plumbing, timed mechanisms are chosen, as well as flow regulation, both in faucets and in toilets.

The sanitation network is separative, connecting the toilets to the network of light water, and the toilets to the fecal one.

Ecological Public Restrooms in Trado By MOL Arquitectura - Sheet4
©Héctor Santos-Diez

Anti-vandalism element and absence of maintenance

Design of the element as modules with a protective casing, permeable, but with anti-vandalism and with no maintenance. We opt for self-sustaining finishes: corten steel, autoclaved treated pine wood and exposed concrete treated with transparent epoxy resins, water repellent and anti-graffiti solution.

_permeable functional sculptural element

Sculptural piece in the middle of the forest, which solves a need in the place. Light will be another material. The exterior light is sifted, the skin of the building functioning like the foliage of the trees, regulating its entrance. The interior lighting is made with low consumption LED lights, bathing the walls tangentially. The nocturnal reading is that of a lantern element that is integrated into the forest, with the interstices between the gills in the form of vertical threads of light. The folds regulate the permeability to light, water and the passage of air.

Ecological Public Restrooms in Trado By MOL Arquitectura - Sheet5
©Héctor Santos-Diez

_standarization and prefabrication in workshop

The envelope is executed by folding Z pieces in the workshop that make up the different facades and the lobby cover. Two prefabricated concrete rings are mounted on which the enclosures are attached. These are modulated with variable guidelines, according to the needs of ventilation, sunlight, water evacuation and restriction of views.


MOL Arquitectura ( Muiños Otero López Arquitectura)

Multidisciplinary office of architecture and urban planning founded in 2002 by Cecilia L. Muiños, Juanjo Otero, architects by A Coruña Architecture Faculty in 2002 and Luis Ángel López, technical architect.

We are specialized in the realization of building projects and landscaping, development of corporate identity, ephemeral architecture, buildings, industrial buildings, housing, retail and urban recovery.

Each project Is addressed as a  continuous research, regardless of its scale, with the definition, the development and construction of each of the elements, the sustainability of the environment, environmental awareness, the critical analysis of the program, the attention to detail and constructive rigor are the office’s invariants.

Signatories in  Fundación Arume constitution in 2019.

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