Wataru Sato diseinatzailearen Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea

Wataru Sato diseinatzailearen Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea lana 2026 Brontzezko Saria A' Design Award sari ospetsuaren irabazle bikaina da Arkitektura, Eraikin eta Egitura Diseinua Lehiaketa Kategorian.

BrontzeArkitektura· 2026

Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea

diseinatzailea: Wataru Sato

Bezeroa: KITAOKA Group

Brontzezko Saria A' Design Award Irabazlea Arkitektura Kategorian

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Koloreak

Diseinua

Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea Diseinuari Buruz

Proiektu hau 40 urteko bulego-eraikin aurrefabrikatu baten berritzea da, eraisketarik gabe egina. 50 metroko hutsune lineal bat txertatu da egungo egituraren erdian, Yoshino ibaiaren ekialde-mendebalde ardatzarekin lerrokatuta, eraikina ipar-hego norabideko bi hegaletan berrantolatuz. Yoshino Ibaiaren Harana izenarekin, eragiketa espazial honek arkitekturaren bizkarrezurra osatzen du. Iparraldera bideratutako argizulo batek eguzki-argi egonkorra eskaintzen du, eta aireztapen pasiboa altuera- eta presio-diferentzien bidez sortzen da. Eraikina berrantolatuz, proiektuak saihestu egiten du sostengatzen dituen balioak zatitzea.

Aintzatespena

Brontzezko Saria A' Design Award Sariari Buruz

Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea Brontzezko Saria A' Design Award irabazlea da, sormenak, asmamenak eta zorroztasunak bereizten dituzten diseinu bikainei ematen zaien aitorpen oso prestijiotsua. Brontze-mailako irabazleak trebetasunez beteriko eta nabarmenki sortzaileak diren artefaktuak dira, beren diseinatzaileen esperientzia zabala, irudimena eta ekimena egiaztatzen dutenak. Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea oso estimatua, miretsia eta maitea den objektua izatea espero da, nabarmenki profesionala eta berritzailea dena. Brontzezko Saria A' Design Award irabazi duen diseinu honek artearen, zientziaren, diseinuaren eta teknologiaren praktika onenak biltzen ditu eta xehetasunei ematen dien arretagatik bikaina da. Yoshinogawa Valley Egoitza Nagusiaren Eraikinaren Berritzea beharrak bikain asetzen dituen, desirak ukitzen dituen, sentimenduak xarmatzen dituen eta jakin-mina erakartzen duen lana da.

Diseinuaren Atzean

Prentsa-kita

Diseinatzaileak emandako kredituak, taldekideak eta xehetasun teknikoak.

Propietate Bereziak: Inspired by the Yoshinogawa River, the design translates the structure of a valley into architecture. By dividing the existing building into two volumes and inserting a linear void, a valley-like interior is created.
A 50-meter skylight brings daylight inside, while the void enables ventilation, greenery, and social interaction. This configuration integrates environmental elements into the workplace.
Through renovation, the design reinterprets an existing office and proposes a new spatial model.
Neurriak eta Ontziratzea: A valley-like void and continuous skylight are introduced at the center of a 50-meter prefabricated office building. The two-story void brings daylight to the ground floor and enhances natural ventilation.
A 7-meter Benjamin fig tree is placed at the center, visible from both levels. Planting along the void forms a layered green environment connected to the exterior.
Existing structure and finishes are retained, creating a composition where old and new materials coexist.
Etiketak: Prefabricated office renovation, open lounge, atrium and skylight, regional architecture, nature-inspired workspace, Yoshino River
Produkzio Teknologia: The project renovates an existing prefabricated office building without demolition.
A central valley-like void integrates daylight, ventilation, and greenery. Continuous skylights provide stable north light, while passive ventilation is driven by height and pressure differences.
Spatial organization is redefined as an environmental system, reducing reliance on mechanical equipment. Existing structure and finishes are retained, forming a layered expression and a sustainable model for reuse.
Diseinu Erronka: The primary challenge was to renew the environmental and social value of a deteriorated prefabricated office without demolition or new construction.
Introducing a skylight and central void into an enclosed structure required coordination of structural, safety, and cost constraints.
Rather than relying on equipment, the design redefines spatial organization as an environmental system.
The project shows that architectural operations can generate new value within existing buildings.
Ikerketa: This research examines how renovation can achieve environmental performance comparable to new construction.
A skylight and central void introduce daylight and passive ventilation, reducing reliance on mechanical systems.
Monitoring shows that artificial lighting is unnecessary during daytime and HVAC demand is reduced. Annual energy decreased by about 73,000 kWh, with savings of 65% in lighting and 30% in air conditioning.
The project presents a replicable model for sustainable renovation.
Inspirazioa: The project draws inspiration from the Yoshinogawa River, known as the Mother River of Tokushima.
Rather than referencing its form directly, the design interprets the river as a spatial structure.
By inserting a linear void through the existing building, the architecture transforms the logic of a valley into an interior condition, bringing light, wind, and greenery deep into the space, while also inviting relationships among people, families, and the local community.
Proiektuaren Iraupena: The project started in January 2023 in Miyoshi Town, Tokushima Prefecture, Japan, and was completed in August 2024.
Eragiketa Fluxua: The building transforms a closed office into an open environment accessible to families and the local community.
The central valley acts as a social axis supporting movement, staying, and interaction. The ground floor serves as a shared space, while the upper floor provides flexible work areas.
Users are not assigned fixed workplaces but choose spaces as needed. Through everyday use, the project encourages informal encounters and redefines how work and social life coexist.
Irudi Kredituak: Image #1: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #2: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #3: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #4: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.
Image #5: Photographer Keita Yamamoto (Architectural Photography), Kitaoka Group Headquarters Renovation, 2024.