Embraced in Recycled Steel Tsev Ua Haujlwm by Nobuaki Miyashita

Embraced in Recycled Steel Tsev Ua Haujlwm by Nobuaki Miyashita is a highly esteemed winner of the very prestigious 2025 A' Design Award Kub in Tsim Vaj Tsev, Tsev thiab Qauv Tsev Competition Category.

KubVaj Tsev· 2025

Embraced in Recycled Steel Tsev Ua Haujlwm

by Nobuaki Miyashita

Client: Kyoei Steel Ltd

A' Design Award Kub Winner in Vaj Tsev Category

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Colors

The Design

About Embraced in Recycled Steel Tsev Ua Haujlwm

Embraced in Recycled Steel yog ib lub tsev ua haujlwm rau ib lub tuam txhab rov muab hlau los siv dua tshiab nyob rau hauv Yamaguchi, Nyij Pooj. Sab nraud lub tsev siv ib qho qauv tsim uas muab tso sib tshooj ua ntxaib raws li tau txais kev tshoov siab los ntawm cov hlau billet, nrog rau cov tshuaj pleev tshwj xeeb uas tsim kom muaj qhov txawv ntawm cov nplaim. Sab hauv siv cov hlau kaum (angle steel), cov hlau tiaj (flat bar) thiab cov hlau nqaj hloov duab (deformed steel bar) ua cov ntaub ntawv tiav rau kev pleev, uas coj cov khoom ntawm tus qauv tsim los pom tau meej. Cov qauv duab barcode thiab QR code nthuav dav mus thoob plaws cov chaw, thiab cov teeb LED tsis muaj kab txuas uas tsim ua duab zoo li cov billet raug muab ua ke nrog cov phlab hlau (steel louvers) saum qab nthab. Lub tsev muaj plaub txheej saum npoo av thiab qhov siab tshaj plaws yog 19.9 meters.

The Recognition

About the A' Design Award Kub

Embraced in Recycled Steel Tsev Ua Haujlwm yog tus yeej ntawm A' Design Award Kub, ib qho kev lees paub muaj meej mom heev uas muab rau cov qauv tsim qib ib, zoo kawg nkaus thiab tshwj xeeb. Cov neeg yeej Kub yog cov khoom tsim tshiab heev, pom deb heev thiab ci ntsa iab uas qhia txog kev txawj ntse, kev txawj thiab lub zog ntawm cov kws tsim qauv. Embraced in Recycled Steel Tsev Ua Haujlwm xav tias yuav yog ib qho kev tsim uas tau txais kev qhuas ntau, tsim kev nyiam tshiab thiab loj uas ua rau muaj nqi tsis tau muaj dua. Cov qauv tsim yeej A' Design Award Kub no yog ib qho haujlwm zoo kawg nkaus thiab muaj kev hwm uas pab tau ntau thiab nthuav dav ciam teb ntawm kev kos duab, kev tshawb fawb, kev tsim qauv thiab thev naus laus zis. Embraced in Recycled Steel Tsev Ua Haujlwm ua rau muaj kev xav tau heev, txhawb kev mob siab, txhawb kev tsim tshiab thiab ua rau peb xav tsis thoob.

Behind the Design

Press Kit

Credits, team members and technical details provided by the designer.

Unique Properties: Kyoei Steel recycles steel scrap using electric furnaces. The new Yamaguchi office themed An Office Embraced in Recycled Steel embodies this transformation. The exterior draws from stacked billets while the interior uses locally sourced angle steel and rebars. Barcode and QR code designs extend through office spaces, harmonizing steel and light. The lighting design transforms these patterns into three dimensional forms, adding depth and movement, symbolizing Kyoei Steel’s identity and vision.
Dimensions & Packaging: Site Area: 108,045.44 Square meters
Building Area: 1,091.12 Square meters
Total Floor Area: 3,931.89 Square meters
Structure: RC
Number of Floors: 4 above ground
Maximum Height: 19.9 m
Eaves Height: 16.5 m
Floor Height: 3.9 m
Ceiling Height: 2.9 m
Tags: architecture, office, lighting design, recycled steel, sustainable design
Production Technology: The building’s exterior adopts a stacked structure inspired by Kyoei Steel’s billets, with special coatings creating textural variations symbolizing recycling. The interior features angle steel, flat bars, and deformed steel bars as finish materials, bringing typically hidden structural elements into the architectural expression. The lighting design integrates seamless LED fixtures shaped like billets, harmonizing with steel louvers on the ceiling for a cohesive lighting environment.
Design Challenge: The main challenge was to create an architecture that symbolizes the company’s identity without compromising factory functionality. The project required extensive testing to utilize steel materials not only structurally but also aesthetically. Special focus was given to the QR code-inspired vertical design and lighting integration, which underwent multiple prototypes and refinements to achieve the desired effect.
Research: Type of Research: Architectural design research
Research Objectives: Exploring recycled steel’s potential in architecture
Methodology: Material analysis and spatial testing
Data Collection: Mock-ups and lighting simulations
Participants: Designers, engineers, technical experts
Results: The building serves as a showroom, demonstrating recycled steel’s architectural potential
Impact: Set a benchmark for sustainable design while enhancing corporate branding and public awareness
Inspiration: The design reflects the process of transforming recycled scrap metal into new steel products, embodying Kyoei Steel’s commitment to sustainability. The stacked billet-inspired structure symbolizes the recycling and regeneration of steel resources, visually expressing the company's dedication. The interior incorporates the company’s own steel materials, such as angle steel, rebars, and flat bars, ensuring their strength, durability, and aesthetic appeal are fully showcased throughout the space.
Project Duration: The project commenced in early 2022 in Yamaguchi, Japan, with design and planning phases focused on integrating Kyoei Steel’s identity into the architecture. Construction began in mid-2023, aiming to unify office functions while enhancing operational efficiency and employee engagement. The office was completed in early 2024, creating a sustainable workspace that embodies the company’s commitment to steel recycling and innovation.
Operation Flow: This building visualizes Kyoei Steel’s recycling process, transforming the journey of recycled scrap metal into an architectural experience. The stacked billet-inspired exterior symbolizes material circulation, while the interior features angle steel and deformed bars as finish materials. The stairwell integrates a QR code motif with lighting, creating an interplay of steel and light that intuitively communicates the company’s technology and commitment to sustainability.
Patents: N/A
Team Members: N/A
Image Credits: Image #1,#3,#4 : Photographer Nobuaki Miyashita Variations, 2024
Image #2,#5 : Photographer Sato Kenta, Variations, 2024.