takao shiotsuka atelier connects the floors of SJ building in japan via outdoor concrete ramp

Kiri Architects has designed a compact family home in Nishitōkyō, an area west of Tokyo's city centre, known as Light-Filled Stair Hall. This 79-square-meter residence is shortlisted in the Urban House category of Dezeen Awards 2022. The design centers around a significantly expanded stairwell that occupies approximately one-third of the total living space, transforming it from a mere transitional element into a versatile social hub for the family of four. Inspired by the *engawa*, a traditional Japanese veranda, principal Keisuke Kiri envisioned the staircase as a dynamic space capable of various functions beyond simple circulation. The stairwell stretches across the entire width of the house, positioned directly behind a full-height glazed facade. This strategic placement allows ample daylight to permeate the interior while simultaneously providing a visual buffer that offers privacy from neighboring properties, a crucial consideration in densely populated Tokyo where land parcels are often small. Constructed with a minimalist approach, the staircase features 50-millimeter-thick wooden treads and risers supported by a system of timber columns and suspended steel rods. This open structure not only maximizes light penetration but also integrates the staircase seamlessly into the living environment. The wide stair treads are designed to be comfortable for sitting and relaxing, and the handrail can even serve as an extended washing line on sunny days, highlighting its multifunctional intent. The ground floor of the house features an open-plan layout intelligently divided by a stepped floor level. One section accommodates a kitchen and dining area with a large island counter, while the other functions as a lounge, complete with a family piano. A wall of integrated storage, including a pantry, flanks this area. Upstairs, a family bathroom is located adjacent to a spacious bedroom. This bedroom is fronted by six glazed doors, which provide flexibility for future subdivision of the space as the children grow, allowing for adaptability in room configuration. An additional feature is a small work-from-home area, thoughtfully incorporated with shelving and a desk at the end of the first-floor landing of the stairwell. Light-Filled Stair Hall is recognized for its innovative use of space and its response to the challenges of urban living, making it a contender for the Urban House of the Year at the Dezeen Awards. The project demonstrates how architectural elements, traditionally seen as functional, can be reimagined to enhance social interaction and adaptability within a compact urban dwelling. #JapaneseArchitecture #ResidentialArchitecture #TokyoHouses #StaircaseDesign #CompactLiving #UrbanHouse #DezeenAwards #KiriArchitects

The Fukuoka-based design firm Case-Real, led by Koichi Futatsumata, has successfully transformed a traditional Japanese storehouse, known as a 'kura,' into a contemporary and highly versatile multi-functional work-live space. This project was conceived to address the growing demand for spaces that seamlessly integrate professional and personal lives, particularly for creative individuals. The owners, a creative director in food design and a gallerist specializing in Japanese craft, required a space that could accommodate their diverse professional needs, from hosting art exhibitions to conducting tea ceremonies, while also serving as a comfortable living environment. The converted property is located in Gosho-Higashi, a tranquil area nestled between Kyoto Gyoen and the Kamo River. The design incorporates a white structure that houses the primary office area, complementing the traditional kura, which was repurposed as a gallery to display pottery and everyday tools. Futatsumata's vision was to create a harmonious environment where the clients' varied professions could coexist and even influence each other, a concept deeply rooted in the inherent adaptability of traditional Japanese residences. The aesthetic of the space is characterized by a refined color palette of plums, browns, and creams, establishing a warm and inviting atmosphere. A key functional element is the inclusion of movable screens, which allow for dynamic adjustments to room sizes, offering flexibility for different activities and gatherings. This design choice underscores the adaptability that was central to the project's brief. To achieve the unique blend of urban Japanese style and traditional Zen aesthetics, Case-Real collaborated with local artisans. For the tearoom, bespoke furniture was crafted by Koichi Touji and Yuji Yamamoto, resulting in a custom six-seater counter designed to fit the room's specific dimensions. Architectural lighting specialist Shoji Hiroyasu was engaged to implement tastefully concealed down-lighting, further enhancing the serene and sophisticated ambiance. Futatsumata highlights that the project's success in balancing multiple functions stems from embracing the inherent spatial continuity found in traditional Japanese architecture. This approach allowed for a design where each functional area within the house harmoniously coexists, providing the owners with an elegant, adaptable, and inspiring environment that supports both their professional endeavors and personal lives. #JapaneseArchitecture #LiveWorkSpace #StorehouseConversion #InteriorDesign #ModernWorkspace #KoichiFutatsumata #CaseReal #KyotoDesign #TraditionalMeetsContemporary

The Tokyo-based architecture firm matsuokasatoshitamurayuki, led by Satoshi Matsuoka and Yuki Tamura, has completed a courtyard house in a commuter town near Tokyo. This residential project features a distinctive pleated radial floor plan and integrates a small garden and outdoor living spaces around its perimeter. The design aims to strike a balance between interior privacy and connection to the surrounding environment, drawing inspiration from traditional Japanese house designs, particularly the 'geya' architectural element. The design strategy involved lowering a small roof attached to the main house to align with the site's borders, following the natural contours of a berm. This approach, combined with the pleated plan, creates varied depths within the structure. The architects aimed to preserve the appearance of the area's characteristic 'geya' house design while fostering the community culture associated with small gardens and berms. The pleated internal spaces are designed with initial specific functions but are intended to adapt to evolving uses over time. The house is configured to accommodate two families within a limited floor space, meaning individual rooms are not designed to be self-sufficient but rather part of a larger interconnected whole. Key interior elements, such as counters and tables, are positioned to extend beyond their designated areas, promoting a fluid transition between spaces. Abundant natural sunlight is a central feature, filtering through windows to illuminate every corner of the home. The 'geya' section, located beneath the small roof, provides a comfortable, sunlit area near a window, suitable for family gatherings or individual relaxation. This space is envisioned to be versatile, functioning as a communal hub while also allowing for separate activities. A central room, measuring 4.5 x 5.5 meters with a ceiling height of 4 meters, forms the core of the house. This area offers a private, bright space for the family, flexible enough to adapt to future needs and changes. The design consciously integrates the concept of a courtyard house, where internal spaces are protected while maintaining a connection to the outside. Unlike typical courtyard houses that are often closed off from the exterior, this residence opens sensitively towards the surrounding berm, ensuring privacy for the residents while remaining approachable to neighbors. The architects describe it as a "closed home" that allows the family to live in peace. The exterior of the main house features a tower-like central room, which serves as a symbolic icon for the family. By adopting and adapting the characteristic appearance of vernacular homes in the area, the architects hope the house will become an enduring and integrated part of the local community. The project details include a wooden structure, with wood and steel as major materials. The site area is 166.58 square meters, with a building area of 82.40 square meters and a total floor area of 101.72 square meters. The structural consultant was ASA – Akira Suzuki, and the general contractor was Yasumatsu Tekken. #Architecture #ResidentialDesign #CourtyardHouse #PleatedFloorPlan #JapaneseArchitecture #Tokyo #GeyaConcept #FamilyHome #ArchitecturalInnovation

The Byoubugaura house, designed by Japanese firm Takeshi Hosaka Architects, presents a distinctive approach to residential architecture, camouflaging its unique interactive spaces within a seemingly conventional concrete box and glass facade. The exterior maintains a regular appearance, yet a closer inspection reveals a complex internal structure that challenges traditional spatial perceptions. The residence is structured with a basement level and two floors above ground. The architectural design is characterized by its innovative use of concrete floor plates, which are dramatically curved upwards at both the front and rear facades. This curvature serves a dual purpose: it strategically obstructs direct views into the living areas, enhancing privacy from neighboring structures, and simultaneously creates a unique visual effect where the interior spaces appear sunken below the established structural grid. A key design element is the blurring of spatial distinctions between the different levels. Despite being on separate floors, the curved concrete plates create an illusion of uniformity, making each level feel interconnected and spatially ambiguous. This design choice contributes to an unexpected sense of depth and enclosure within the home. The integration of wooden floors throughout the interior complements the concrete structure by providing warmth and reflecting the indirect natural light that filters into the spaces. This strategic use of materials ensures the home remains livable and inviting, despite its unconventional concrete forms. Further enhancing the home's interactive quality are the four large glass panes on each level. These panels are designed to slide back and forth, offering various open-air configurations and allowing residents to control the flow of natural light and ventilation. This flexibility transforms the living spaces, adapting them to different moods and environmental conditions. A circular staircase, an integral part of the design, slices through the curved floor plate, connecting the levels. This architectural feature not only provides vertical circulation but also exposes a small section of the floor's construction, offering a glimpse into the building's structural ingenuity. The project details highlight the meticulous planning and execution behind Byoubugaura. The structural engineering was handled by Kenji Nawa, with photography by Koji Fujii / Nacasa&Partners Inc. The client for this innovative residence was Toshiyuki Kondo. Located in Yokohama, Japan, the house is constructed from reinforced concrete. It occupies a site area of 65.16 square meters, with a building area of 30.28 square meters, and a total floor area of 90.84 square meters, distributed across the basement, first, and second floors. The building stands at a height of 5494 mm, comprising a basement, first floor, and second floor. The design phase spanned from March 2011 to September 2011, with construction commencing in September 2011 and reaching completion in the spring of 2012. This project exemplifies an architectural exploration of material properties and spatial dynamics, creating a home that is both aesthetically striking and functionally adaptable. #ArchitecturalInnovation #ConcreteDesign #JapaneseArchitecture #ResidentialArchitecture #TakeshiHosakaArchitects #InteriorDesign #SlidingGlassPanels #SpatialBlurring #ModernHome

The Yushima Building project, designed by Tenhachi Architect & Interior Design, is situated near Kanda Myojin Shrine in central Tokyo, a location notable for its historical significance and dense urban fabric. The site itself is narrow, measuring 5.2m by 14.5m, and directly faces the iconic Yushima Seido, a historical landmark. The architectural approach for this project focuses on integration and subtlety within the existing cityscape, rather than creating a dominant structure. The design prioritizes blurring the building's outline to harmonize with its tall neighbors, which is a key consideration given the limited space and the presence of numerous other high-rise structures in the immediate vicinity. The building, completed in 2024, spans an area of 60 square meters. The design team included Kei Sato as the main architect and Tomoko Sasaki for facade design, with structural engineering provided by TETSUYA TANAKA STRUCTURAL ENGINEERS and general construction by Sekieitatemono Inc. These specifications highlight the collaborative effort and specialized expertise involved in executing a project on such a challenging urban plot. The choice of materials and design elements would have been crucial to achieving the desired effect of a 'wooden outline that embraces the city,' hinting at the use of natural or warm materials to soften the building's presence. The article emphasizes the contextual sensitivity of the Yushima Building. Its location on the historic Nakasendo route, with a direct view of Yushima Seido, necessitated a design that respects and interacts with its surroundings. The phrase "softly blur the building's outline" suggests a departure from imposing, monolithic structures often found in dense urban centers. Instead, the architects aimed for a more integrated and visually gentle addition to the Tokyo skyline, ensuring that the new structure complements rather than competes with the historical and contemporary elements of its environment. This project likely employed innovative architectural solutions to maximize space and functionality within its narrow footprint while adhering to the aesthetic goal of blending into the urban fabric. The use of glass in the exterior, as indicated by some image descriptions, suggests transparency and reflectivity, which can further contribute to the blurring effect by mirroring the surrounding environment. The interior design also incorporates wood and glass, implying a connection between the interior and exterior, and possibly a warm, inviting atmosphere despite the urban setting. In essence, the Yushima Building represents a thoughtful architectural response to a challenging urban site in Tokyo. Its design philosophy centers on harmonious integration, utilizing specific material choices and a focus on visual subtlety to create a structure that acknowledges its historical context and dense surroundings. The project’s successful completion underscores the ability of modern architecture to contribute meaningfully to urban landscapes while respecting existing conditions and promoting a less assertive, more integrated urban aesthetic. #OfficeBuildings #Sustainability #Japan #TenhachiArchitectAndInteriorDesign #UrbanArchitecture #FacadeDesign #Tokyo

This article explores a curated selection of eight distinctive staircases that have garnered significant attention on Dezeen's Pinterest board, which consistently ranks as one of the most popular boards for staircases. The featured staircases showcase a variety of materials including wood, concrete, brick, and steel, and represent both interior and exterior designs, demonstrating creative and trend-transcending approaches to a fundamental architectural element. The collection aims to highlight staircases that serve not only a functional purpose but also act as prominent design features within their respective architectural contexts. One featured staircase is located in a house in Akitsu, Japan, designed by Kazunori Fujimoto Architect & Associates. This tall, guardless spiral staircase, crafted from cast concrete, connects two floors in a seaside home. It provides access between bedrooms on the lower level and living spaces on the upper floor, twisting elegantly within the structure. Another example is found in the House by the Sea in Cornwall, England, completed by London studio Of Architecture. This residence, designed for an artist and surfer, incorporates prefabricated plywood steps in the center of its living area. These steps lead to a mezzanine level situated beneath the home's distinctive sloping roof, contributing to the open and minimalist aesthetic of the house. The Louis-Hébert building in Canada, by Naturehumaine, presents an exterior staircase as a key design element. This apartment building extension, completed in 2021, features balconies spanning its full width. A striking yellow exterior staircase connects the two buildings, adding a vibrant visual contrast and functional linkage. Graphic House in London, renovated by Office S&M;, showcases a playful approach to stairwell design. The studio introduced graphic shapes and bold colors into the Hackney home. The stairwell features large white geometric shapes painted on the walls, providing a contrast to the pale blue staircase. Circular mirrors are strategically placed to reflect light from a skylight, enhancing the brightness of the space. In Scotland, The Arbor House by Brown & Brown utilizes stone, timber, and concrete in its construction. A sculptural spiral staircase made from birch plywood, created in collaboration with local designer Angus & Mack, stands in the dining and living area. The studio noted that the staircase's assembly involved three weeks of individually cutting and hand-layering timber treads to form a smooth, sinuous parabolic curve. The Conran Shop Daikanyama in Tokyo, Japan, designed by Keji Ashizawa, features a staircase with a handrail made from black paper cords. Ashizawa highlighted the use of Japanese paper in interior design as a distinctively Japanese element, contributing to the unique aesthetic of the retail space. The Aga Khan Academy in Bangladesh, a boarding school designed by British practice Feilden Clegg Bradley Studios and Shatotto Architecture for Green Living, demonstrates the versatile use of bricks. Bricks were employed not only for walls and seating but also for perforated ventilation screens and the stairwells, reflecting local construction techniques and materials. Finally, the Frederic Chopin Apartment in São Paulo, Brazil, renovated by Tria Arquitetura, includes a spiral staircase with travertine treads and solid white bannisters. This staircase, which snakes between the two levels of the penthouse apartment, is designed to function as a sculptural element within the interior space. Dezeen's Pinterest platform, with over 1.4 million followers and more than ten million monthly views, continues to be a popular source for architectural inspiration, with "houses" and "offices" being among its most frequented boards alongside staircases. #StaircaseDesign #InteriorArchitecture #ArchitecturalDetails #ModernStaircases #ResidentialDesign #JapaneseArchitecture #ConcreteStaircases #PlywoodStaircases #ArchitecturalInspiration

In 2024, SHISUO Design Office undertook a project for Aranya, focusing on the reimagination of lobby spaces situated within the podium levels of two mountain-view residences in Sanya, China. The architectural design of the original structure skillfully utilized the site's natural elevation changes. One side of the podium is integrated into the hillside, featuring a narrow lightwell that penetrates the interior. Conversely, the opposite side connects to a series of terraced platforms, designed to serve as the main entrance for residents. A covered corridor acts as an introductory element to the residential area. The design incorporates volcanic rock cladding on the walls, creating distinct framed window openings. These openings are strategically positioned to either frame views of the exterior landscape or to form a perforated screen, allowing natural light to filter through its gaps. This interplay of light and shadow introduces a rhythmic quality to the extended space, effectively transitioning between the external environment and the interior spaces. The design emphasizes a harmonious integration with the natural surroundings, while also creating a dynamic and visually engaging entry experience for the residents. The project covers an area of 1200 square meters and was completed in 2024. Sanif is credited for the photographs capturing the essence of the design. WTD GROUP served as the landscape consultant, contributing to the integration of the built environment with its natural context. Chongqing Hechuang Co., Ltd was responsible for the construction, ensuring the structural integrity and quality of the build. BMF Material handled the specialized bamboo construction, highlighting the use of sustainable and aesthetic materials in the project. Shanghai Jianyan Architectural Design Co. acted as the architectural consultant. The design team included Sanif and Changshan as designers in charge, supported by Lin Zihan and Zhang Han. The client, Aranya, was represented by a team comprising Fu Shuaishuai, Zhang Qian, Guo Xiyu, Dong Huimin, Chen Jin, and Deng Yaqiong. The construction phase was executed by a team led by Yuan Guibin, Zhang Chun, Wang Zhenkun, Lin Shu, Zhou Huaqaing, Hua Chuan, Wang Deshen, Zhao Mingjun, Ren Yunzhi, Ren Yunfu, Li Wanbin, Liu Chunhua, Xiong Delong, Zou Tao, Ming Jian, Zhao Guanyu, Liu Xueyan, and Fu Shaorong, Xie Xinjian. Gao Xu, Hu Jiawei, Wang Yanchun, and Zheng Shuai were involved with the bamboo wood brand aspects. The choice of materials, specifically wood and stone, further underscores the design's commitment to natural elements and a refined aesthetic. #HotelInteriors #SanyaArchitecture #ChinaArchitecture #SHISUOdesignOffice #VolcanicRock #LightwellDesign #TerracedPlatforms #SustainableMaterials

This blog post features the renovation of a 90-year-old house in Kamakura, Japan, transformed into an atelier by architect Yuji Okitsu. The project, named Annex House, serves as an annex to the clients' main residence, designed to host artists, culinary experts, and entertain friends. The building, a 721-square-foot structure, is situated on a flat site on a steep hillside, typical of Kamakura's topography. Upon initial assessment, the house had been stripped to its framework, with its original layout largely unidentifiable. The renovation aimed to harmonize the existing structure with the surrounding environment, preserving the historical essence of the building while integrating modern elements. A key design philosophy was to maintain respect for the house's long history. This was achieved by not painting the exposed parts of the repaired and reinforced framework to differentiate new wood from old. The project sought to symbolize the coexistence of old and new and the building's enduring presence. Material selection emphasized longevity and character. The exterior walls were clad in yakisugi, a traditional Japanese charred wood, known for its durability and aesthetic aging. Brass door knobs were chosen for similar reasons. Inside, solid chestnut wood flooring, repurposed from the client's previous home, and antique window frames that the clients already owned, were incorporated, adding personal history and warmth to the interior. The ground floor of the renovated space is primarily dedicated to the atelier, kitchen, and dining area. The strategic placement of the stairwell and variations in ceiling height create an open and fluid layout, allowing for unhindered circulation throughout the space. The second floor features low windows, known as muso-mado, which are traditional Japanese windows with vertical slats. These windows open to the first-floor atelier, facilitating the transmission of atmosphere, sounds, and warm air from the wood stove, thereby creating a unified, open-plan feel across both levels. A distinctive feature of the renovation is the concrete deck in the garden. This deck is engineered to collect a thin layer of water when it rains, transforming it into a reflecting pool. The ripples on the water's surface create dynamic patterns that reflect the architecture, fostering an interactive blend of nature and design. After the rain, it becomes a temporary water basin, mirroring the surrounding trees and natural light, further merging the landscape with the built environment. The renovation successfully preserves the historical integrity of the 90-year-old house while adapting it for contemporary use as a flexible art and gathering space. The design integrates old and new elements thoughtfully, reflecting the passage of time and ensuring the building's relevance for future generations. The project embodies a balance between architectural intervention and environmental harmony, creating a space that is both functional and aesthetically integrated with its unique setting. #Kamakura #JapaneseArchitecture #HouseRenovation #AtelierDesign #YakisugiCladding #ConcreteDeck #ReflectingPool #HistoricPreservation #ArchitecturalHarmony

This article presents the 'House in Tama' project, designed by Cheng Hao Chung Architect, located on the border of Kanagawa and Tokyo, Japan. The house is situated on the southern slope of a hill, offering ample sunlight and a clear atmosphere, despite being in a dense residential neighborhood. The design approach for this 116 square meter residence, completed in 2024, focused on integrating with the natural topography and maximizing light and views while ensuring privacy and comfort for the inhabitants. The architectural concept emphasizes a multi-layered structure that adapts to the sloping site. The design creates a sequence of distinct yet interconnected spaces, each with its own relationship to the exterior environment. The architects utilized a combination of concrete, wood, and glass as primary materials, contributing to both the structural integrity and the aesthetic of the house. Concrete provides a robust foundation and defines the main volumes, while wood introduces warmth and texture in interior finishes. Large glass panels are strategically placed to blur the boundaries between indoor and outdoor spaces, allowing natural light to penetrate deeply into the living areas and offering framed views of the surrounding landscape and the distant Buddhist cemetery. A key aspect of the design is the careful consideration of the site's unique characteristics. The building form responds to the contours of the hill, creating a stepped profile that minimizes its visual impact and blends with the terrain. The internal layout is organized to take advantage of the southern orientation for optimal sunlight exposure and to create a comfortable microclimate within the house. The use of varied ceiling heights and spatial configurations contributes to a dynamic and engaging living experience, moving from more intimate, enclosed areas to expansive, open-plan zones that facilitate family interaction and entertaining. The project involved collaboration with structural engineer Jun Yanagimuro and constructor Sekkeikomu. The construction process highlighted attention to detail in material selection and craftsmanship, aiming for a durable and aesthetically pleasing outcome. The interior spaces feature a minimalist aesthetic, allowing the quality of materials and the interplay of light and shadow to define the atmosphere. The design includes functional elements such as a modern kitchen, comfortable living areas, and private bedrooms, all designed with a focus on usability and long-term sustainability. Overall, the House in Tama demonstrates an architectural solution that responds thoughtfully to its context, balancing modern design principles with respect for the natural and cultural landscape. The project showcases how a residential building in a challenging urban-natural interface can achieve both architectural distinction and a high quality of life for its residents through careful planning, material selection, and a strong conceptual vision. The dwelling serves as a contemporary example of Japanese residential architecture, prioritizing light, views, and a harmonious relationship with its immediate surroundings. #ResidentialArchitecture #JapaneseArchitecture #ModernDesign #SlopingSite #NaturalLight #Concrete #Wood #Glass #UrbanIntegration #SustainableDesign

KIRI architects, based in Tokyo, has designed a compact dwelling featuring a prominent, light-filled stair hall. This unique architectural element occupies one-third of the house's total volume and extends across its entire length. The design strategically positions the living areas to the north, while an open, sunny garden is situated to the south. The glazed and elongated stair hall serves a crucial function in bringing natural light and external views into the interior spaces, which might otherwise be confined and dimly lit. This central feature transforms what could be a compact and potentially dark home into an airy and inviting residence. Within the expansive stair hall, the design team at KIRI architects has incorporated various spaces intended for lingering and relaxation. These include a spacious engawa, a traditional Japanese veranda, which offers views of the garden. Additionally, a dedicated study area is positioned to provide a vista of the street. The architects emphasize the multi-functional nature of the stair hall, noting its adaptability. For instance, the handrail can be utilized as an extended clothesline on sunny days, while the stair treads are designed to be wide enough for sitting and relaxing, allowing residents to enjoy activities such as listening to music from the lower level. This zone is described as a 'sublime space filled with light and breeze,' highlighting its role as a comfortable and dynamic hub within the home. The structural integrity of the staircase is maintained by a series of slender timber columns and 16-millimeter steel rods that are suspended from the ceiling. The timber treads and risers of the stairs are securely bolted together and fastened onto a steel girder, ensuring both stability and a refined aesthetic. The architects acknowledge that, at first glance, the scale of the staircase might appear disproportionate for a dwelling of its size. However, they clarify that the light-filled stair hall is not merely a functional element for vertical circulation but also acts as a significant mediator of the surrounding environment. The slender yet overlapping columns within the stair hall subtly delineate the living spaces from the garden and neighboring properties. This arrangement allows a substantial amount of sunlight to enter the home, which is then filtered and softened by the various elements of the staircase—including the stairs themselves, the handrail, and the hanging rods. The result is a mellow and ample quality of light that permeates the living spaces beyond the central hall. In adherence to the principles of metabolism, a architectural movement that emphasizes flexibility and adaptability, the bedroom on the upper floor facing the staircase features a recurring series of folding doors. This design choice anticipates future needs, allowing for the potential division of the space into smaller children's rooms as the family evolves. Similarly, the ground floor living room is designed to open up completely to the garden, providing children with direct and unhindered access to the outdoor space. This thoughtful integration of flexible design and natural light creates a living environment that is both aesthetically pleasing and highly functional, responding to the dynamic needs of its occupants within a compact Japanese urban setting. #JapaneseArchitecture #CompactLiving #StaircaseDesign #NaturalLight #ResidentialArchitecture #FlexibleInteriors #MetabolistInfluence #ArchitecturalInnovation

This project details the construction of a compact office building situated within a residential area in Kitakyushu, Japan. The primary occupant is Ecoplan Corporation, a company specializing in wildlife and vegetation studies. The architectural design, a collaboration between Furumori Koichi architectural design studio and Daiju Kuwahara, was completed in 2024 and spans an area of 444 square meters. Kyoko Omori provided the photographic documentation for the project. The lead architectural team included Koichi Furumori, Kohei Hashisako, and Kenichi Anai, with Daiju Kuwahara also playing a key role. Structural engineering was handled by Kenichiro Takashima, while Tomohiro Urata was responsible for the landscape architecture. Azuma Kensetsu served as the general contractor for the construction. The project integrates into a residential neighborhood, emphasizing a design that harmonizes with its surroundings. The choice of Ecoplan Corporation as the tenant suggests a focus on environmental considerations, potentially influencing material selection and design elements. The building’s modest size indicates a tailored approach to meet the specific needs of the company, rather than a large-scale commercial development. The involvement of multiple specialists, including structural engineers and landscape architects, highlights a comprehensive design and construction process, ensuring both structural integrity and aesthetic integration with the site's natural elements. The architecture likely considers aspects such as natural light, ventilation, and material sustainability, given the tenant's focus on environmental research. Photographs by Kyoko Omori capture various aspects of the building, including interior spaces, exterior views, and possibly details of material use. The images, which include wood and glass elements, suggest a design that incorporates natural materials and maximizes transparency to foster a connection with the outdoors. The mention of beams in some image descriptions indicates structural expression within the interior, contributing to the overall aesthetic. Aerial views and cityscape images would provide context regarding the building's placement within Kitakyushu’s urban fabric and its relationship to the broader environment. Key design features potentially include a thoughtful integration of wood, which can offer warmth and a natural feel to the office environment. Glass components would allow for ample natural light, reducing reliance on artificial lighting and enhancing the working atmosphere. The phrase "Office in the Breeze" in the title hints at a design that facilitates natural airflow and promotes a comfortable indoor climate. This could involve strategically placed windows, balconies, or other architectural elements designed to harness prevailing winds. The building's category as "Commercial Architecture" within a residential context suggests a nuanced approach to zoning and community integration, possibly requiring sensitive design choices to blend functionality with neighborhood character. The collaboration between two design studios implies a rich exchange of ideas and expertise, likely leading to an innovative and well-considered architectural solution. The project serves as an example of contemporary commercial architecture in Japan, demonstrating how design can respond to both client needs and environmental considerations within a specific urban setting. The area of 444 square meters signifies a mid-sized project that allows for detailed attention to both functional layout and aesthetic quality, potentially incorporating flexible workspaces to support Ecoplan Corporation’s research activities. #CommercialArchitecture #JapaneseArchitecture #Kitakyushu #OfficeDesign #WoodArchitecture #GlassArchitecture #EnvironmentalDesign #KyokoOmori

The Cadenza concrete spiral staircase, developed by researchers at ETH Zurich in collaboration with ROK Architects, represents an innovative approach to construction by emphasizing material-saving and reversible design principles. This project is a key contribution to the NEST building, an experimental laboratory in Dübendorf, Switzerland, dedicated to advanced fabrication techniques. The staircase is installed within the building's STEP2 unit, featuring 16 identical prefabricated concrete steps arranged helically. A central innovation of the Cadenza staircase lies in its fabrication method. All 16 steps are produced using a single 3D-printed mold made from carbon fiber-reinforced PET plastic. This directly addresses the significant waste generated by traditional, single-use formwork in concrete construction. Instead of directly 3D-printing the concrete elements, the team opted to 3D-print a reusable mold, which allows for repeated casting of multiple steps. This approach ensures minimal digital fabrication input for scalable production of bespoke designs and enables the seamless integration of steel reinforcement, a critical component that is often incompatible with direct concrete 3D printing. The design prioritizes material efficiency, with each step being only 20 millimeters thick. This structural optimization results in a drastic weight reduction, giving the staircase a distinctive slender, skeletal appearance. Each individual step weighs 45 kilograms, approximately 60 percent less than a conventional concrete step. The steps are connected using dry connections, which means they can be easily disassembled and reused in other architectural projects, promoting circularity in construction rather than contributing to demolition waste. Assembly of the Cadenza staircase is designed for efficiency and adaptability. Although the staircase was initially assembled off-site and craned into the NEST building, it is engineered to be handled and installed without heavy machinery, making it suitable for tight spaces and retrofitting applications. The individual steps are crafted from ultra-high-strength, steel fiber-reinforced concrete. The computational workflow for this design was developed in partnership with Swiss firm ROK Architects, allowing for the creation of various designs using the same underlying methodology. Two primary components facilitate the staircase's assembly and stability. First, a series of interlocking connectors are printed directly into each step, ensuring precise attachment between them. Second, a system of three steel alloy cables runs through channels along the spine of the staircase. This is a post-tensioning system utilizing 'memory steel,' where tension is applied only after the steps are in place through the brief application of heat from a generator. This process effectively secures the steps tightly to the center of the staircase. This tensioning system is designed to be disassembled, allowing the individual steps to be removed and repurposed, thereby contributing to a circular construction economy. The longevity of the concrete itself further supports the sustainability objectives of the project, as its extended lifespan can offset concerns regarding concrete's carbon emissions. The NEST building, managed by Swiss research institutions Empa and Eawag, serves as a dynamic environment for such experimental modules, allowing for the installation, testing, and eventual dismantling of innovative construction solutions like the Cadenza staircase. #ETHZurich #ConcreteStaircase #3DPrinting #ReusableConstruction #MaterialEfficiency #SpiralStaircases #SustainableArchitecture #DigitalFabrication #NESTBuilding

Architects Daisuke Ibano and Ryosuke Fujii of id+fr designed the 'Diagonal House' in a densely populated residential area of Tokyo for a couple and their children. The project addressed the challenge of strict height limitations due to category 1 height control district regulations on the front half of the lot, requiring an innovative approach to urban housing. The primary goal was to integrate the kitchen, living space, and terrace, which were important to the client who spends significant time cooking. This led to the implementation of a design featuring staggered floors, aiming to achieve spatial continuity and facilitate smooth vertical circulation throughout the residence. To enhance the sense of spatial continuity, the architects incorporated a slab above the living room that folds upwards along a slanted line. Additionally, a portion of the uppermost slab was partially raised to create a large kitchen terrace opening, further connecting indoor and outdoor spaces. These design choices resulted in unique features that encourage diverse activities within the home. For instance, the sloped floor of the terrace is suitable for sunbathing, while the area beneath the raised section of the top slab forms an alcove that can be utilized for sleeping. The architectural compositions extended to other design elements, including platforms integrated at a diagonal angle alongside the stairwell that navigates between the staggered floors. Correspondingly, storage units on the opposite wall also adopted a diagonal angle. A triangular light garden was positioned at the end of a large opening in the living room, establishing a diagonally oriented axis that contributes to a more spacious feel within the interior. The numerous diagonal lines throughout the 'Diagonal House' were carefully considered to optimize visibility and establish interconnected relationships between various spaces. These diagonals became a defining characteristic of the design, fostering a sense of openness and connection to the external environment. The architects aimed to create a dwelling that not only harmonizes with the varied architectural forms of the surrounding residential buildings but also provides a microenvironment where the family can experience a strong sense of urban life from any point within their home. The project successfully blends functionality with an aesthetic that responds to its tight urban context, offering inventive solutions for modern living in Tokyo. #TokyoArchitecture #ResidentialDesign #SpatialContinuity #DiagonalElements #StaggeredFloors #UrbanHousing #JapaneseArchitecture #idfrArchitecture #InnovativeDesign

FT Architects, led by Katsuya Fukushima and Hiroko Tominaga, completed a residential project in Tokyo, Japan, named "Column and Slab." This three-story house is situated on a narrow urban plot, measuring only 5 by 14 meters, and is surrounded by other properties on three sides, with only its narrow frontage open to the street. The architects' previous projects, "e-house" and "s-house," also located in densely populated areas of Tokyo, explored methods to mitigate urban density, such as using free-form, cranked screens. However, for the Column and Slab house, the approach shifted to address the oppressive feeling of tight surroundings by evoking historical dwelling forms and challenging the urban environment directly. The structural design of the house incorporates a grid frame of concrete columns and beams. Eight concrete columns, each 300mm square, are integrated within the interior, positioned on a 2.6m x 3.0m grid. These columns support two 100mm-thick raised floors, which cantilever out at the sides to maximize the building's width within the constrained site. The need for ground improvement necessitated the use of this column-and-beam system, confining groundwork to the areas beneath the columns. The architects noted that during construction, the site resembled an archaeological excavation of ancient Japanese columns, highlighting the integration of traditional structural elements. The third story of the house is constructed from timber and is described as a "timber box" sitting atop the concrete structure, akin to a penthouse. This combination of concrete and timber structures forms a simple yet logical solution to the client's desire for maximum space while adhering to urban regulations and environmental limitations. The architects emphasized the client's cooperative attitude, even joking about the rough concrete columns becoming part of the family, indicating a positive engagement with the unconventional design elements. The interior layout is designed to offer a unique spatial experience. The ground floor, referred to as the "doma" (earthen floor room), features the grid of columns delineating three distinct spaces, each approximately 4.5 tatami-mats in size, complemented by 0.95m wide aisles on either side. This "doma" concept is intended to blend the outside urban environment with the interior. The first floor has a slightly lowered ceiling height, creating a sense of both tension and intimacy. Mobile storage units and a light well loosely partition the bedrooms from the bathroom on this level. The second floor houses the main domestic hub, featuring an open, box-form space with generous openings and a relaxed atmosphere, suitable for dining. The eight concrete columns on this floor serve not only a structural purpose but also act as flexible elements, removing the need for fixed partitions and allowing the space to adapt to future changes in family life. This adaptability is seen as a crucial functional aspect of the columns, extending beyond their primary structural role. The architects aimed to create a house that, in the chaotic urban landscape of modern Tokyo, stands out like a museum. They sought to integrate traditional forms into contemporary living without being nostalgic, thereby establishing links to architectural tradition and generating spatial tension. The design merges modernist grid frames with traditional Japanese elements like columns and raised floors. This approach represents an effort to develop an architectural language that utilizes established forms in a vivid, contemporary setting, avoiding purely nostalgic or traditionalist interpretations. The house has a total floor area of 105.6m2 and is primarily made of reinforced concrete, with a partial wood structure for the third story. #FTArchitects #TokyoArchitecture #JapaneseHouses #ColumnAndSlab #NarrowLotDesign #ConcreteArchitecture #UrbanHousing #ModernistJapanese #ResidentialDesign

A Cat Tree House, located in Kamakura, Japan, is a private dwelling and work studio designed by architect Tan Yamanouchi for himself, his partner, and their two cats. The design of the residence prioritizes the needs and behaviors of the feline inhabitants, integrating them seamlessly with human living spaces. Yamanouchi, drawing from ten years of observation, identified three primary cat needs: the ability to choose comfortable temperature levels, the desire to be in the same room as owners while maintaining personal space, and the necessity of multiple safe hiding spots. These considerations informed the core architectural concept of the home. The residence is structured around a large spiral staircase, or caracole, featuring multiple nooks and crannies. This central element includes an atrium with a skylight, allowing natural light to penetrate the interior. The staircase steps are designed with varied rises, based on the body measurements of the cats, resulting in 23 distinct floor levels. This stratification creates fine layers of temperature zones, enabling the cats to move freely and find their preferred climate throughout the day. The run of each step is generously set at 900 millimeters, providing ample space for cats to hide, maintain distance, or rest undisturbed. The caracole's design draws inspiration from a tamasudare, a traditional Japanese bamboo screen, influencing its loosely woven and adaptable structure. This exposed architectural feature also addresses Kamakura's highly humid climate, complementing the split-level design. A buffer space, one meter above ground level, is integrated between the raft foundation and the floor. This area facilitates airflow and accommodates hot water pipes for floor heating, contributing to effective temperature and humidity control within the house. Around the caracole, various functional spaces are arranged on different levels, including a bedroom, guest room, studio, kitchen, dining room, and bathroom. These rooms are designed not only for human comfort but also to serve as potential hiding places for the cats, particularly when guests are present. Fall prevention handrails in the atrium are inspired by Kamakura's mountain views and are crafted from delicate stainless steel. A bookshelf is integrated along the spiral steps, transforming the passage into a multi-level library for humans and cozy resting spots for cats. One section of the circular steps extends backward, leading to a window positioned at cat eye level, providing an outdoor view. The final step of the staircase is elevated to the height of a human chair, creating a porch-like area for the cats. The house's exterior form comprises two interlocking L-shaped volumes with shed roofs of varying angles. This configuration simplifies construction and harmonizes with the natural landscape of Kamakura. The architect also intentionally designed window placements and heights to allow passersby to observe the cats, integrating them into the architectural exterior and local scenery. In terms of landscape design, the garden is divided into two main zones: an Approach Zone leading to the entrance and front garden, and a Terrace Zone with a wooden deck and kitchen garden. The Approach Zone features approximately 80 species of plants, providing a diverse color palette, while the Terrace Zone hosts 20 species of edible herbs. An outdoor space covered with fragrant wood chips offers a place to sit and dine, completing the home's comprehensive design that caters to both human and feline occupants, harmonizing their needs within a thoughtfully constructed environment. #CatFriendlyDesign #JapaneseArchitecture #SpiralStaircase #ResidentialArchitecture #PetCenteredDesign #SustainableDesign #KamakuraHome #MultiLevelLiving #ArchitecturalInnovation