Structural Furniture

Definition

Structural furniture names the elevation of furniture from object to structure: furniture designed to be the building's load-bearing construction. The concept's source is Shigeru Ban's Furniture House series, in Deborah Schneiderman's account: "Furniture House elevated the status of furniture from an object added to a room to a space-defining and structural element," reconceptualizing "the traditional hierarchy of building. In this design, the hierarchy is eliminated and 'furniture and house are one.'" The first Furniture House (1995) grew out of Ban's "Library of a Poet" — paper-tube truss construction coupled with floor-to-ceiling bookcases — where Ban "realized the possibility that furniture could be designed to serve as the primary structure"; the design also "coupled his structural investigations with the tragedies of Japan's earthquakes – where falling furniture caused many casualties." The system is modular and manufacturable: furniture-sized units (240 cm high, 90 cm wide — the text prints "90 meters" — 45 cm deep for bookcases, 70 cm for other units), each "approximately 80 kilograms so that a single person can move it," "completely manufactured and finished, inside and out, off-site" with a furniture manufacturer, functioning "simultaneously as interior, exterior, and structure, containing insulating materials and having both interior and exterior finishes as necessary." In Furniture House 2, "the structural furniture on the first floor carries the load of the second floor, and second floor furniture elements carry the roof load." The concept's disciplinary stake: the interior-design object (furniture) becomes the architectural structure — "the structural element without which the house would not exist" — collapsing the hierarchy that separates the two fields.

Key Thinkers

• Deborah Schneiderman — the concept's theorist: the elevation thesis ("from an object added to a room to a space-defining and structural element"), the hierarchy elimination ("furniture and house are one"), and the Furniture House's placement in Ban's structural investigations.
• Shigeru Ban — the concept's architect: the Furniture House series (five houses completed to date per the chapter), the paper-tube precedents, the PC Pile House, the furniture-manufacturer collaboration, and the earthquake motivation (not yet paged — see log).

Related Concepts

• Prefab Interior — the register structural furniture realizes: off-site manufacture of interior elements that are simultaneously program, envelope, and structure.
• Flexible Interior — the family resemblance and its limit: the Beechers' screen made furniture do a wall's work by moving; structural furniture makes furniture do a wall's work by holding. Where the screen's furniture moves, structural furniture fixes — the interior's flexibility here is the unit's portability, not the plan's.
• Machine for Living — the furniture-house as the machine-for-living's component logic realized: the house assembled from its own furnishings, the dwelling's machine parts at furniture scale.
• Domestic Interior — the site: bookcases, closets and cabinets as the house's structure — the domestic interior's storage furniture promoted from room-filler to building.
• Add-on — su11's cousin unit: the multi-programmed prefab element as "a habitable puzzle consisting of several functions, including object, furniture, and space" — furniture, structure, and space combined without Ban's load-bearing demand.
• Assemblage — the equalization: "the traditional design hierarchies have been eliminated" — furniture, interior, structure, and exterior as one composite system, the flat, non-hierarchical arrangement the art-historical assemblage practices at object scale.
• Authorship — the collaboration structure: Ban "collaborated with a furniture manufacturer," the components "completely manufactured and finished, inside and out, off-site" — authorship divided between structural conception and furniture-industrial execution.

Source Support

Sources in the wiki that discuss this concept:

• Inside the prefab house (Schneiderman 2018) — the source of the concept: the elevation thesis, the Library of a Poet origin, the earthquake motivation, the module dimensions and one-person portability, the off-site manufacture with a furniture manufacturer, the Furniture House 2 load path (furniture carrying floors and roof), and the hierarchy-equalization synthesis.
• The Kitchen as a Place to Be (Potter 1990/2006) — the concept's inverse at kitchen scale: the kitchen as built structure amid "loose furniture." The Penton kitchen "was by its physical nature distinguished from loose furniture elsewhere in the large room" (p. 266) — "The job was workshop-built but for London, which required some unit-prefabrication and other standardised details, in order to keep within a fairly tight budget… half-way between joinery and simplified cabinetmaking" (p. 266); its construction is furniture-technique carrying structural work: the two support systems ("the primary one in softwood grooved for lighting cable, the secondary being a run of mahogany horizontals which locate, and hold, containing storage boxes… but also locate switches and socket outlets," p. 267), doors as "separate applied flat screens projecting forward… the extent of projection forming the handle," and the comb/finger corner joint chosen "for its through-and-through character" where "dovetails would have been quite wrong" — with the two-sided cupboards' back-panel-less construction now "worrying… though in fact the construction seems to have held up over many years without trouble" (p. 268). Where Ban's furniture carries the house, Potter's kitchen structure carries the room's working programme — and the success test is attachment ("dismantle the whole thing and re-erect it on an entirely different site," p. 268): structure transplanted like furniture (see kitchen, prefab-interior, self-build).
• source-notes/vanucci-2018-inside-out-outside-in

Open Questions

• Does structural furniture dissolve the architecture/interior-design division of labor at the level of structure itself — the interior designer's object becoming the architect's beam (see interior-design-vs-architecture, Position R)? Or does it show the division was always one of professional territory, not of objects?
• Croft's audit of the Schröder House found flexibility's "reality is about control, not freedom": what is the social regime of a house whose structure is furniture? The dweller can move no wall that isn't furniture — is the structural-furniture house the flexible interior frozen by its own structure?
• The earthquake motivation inverts safety logic: furniture, the interior's most dangerous falling objects, is made load-bearing — the hazard made incapable of falling because it is the house. Is this the interior's first structural-safety argument?
• The furniture elements "function simultaneously as interior, exterior, and structure, containing insulating materials": when one manufactured element performs three systems, where does maintenance, aging, or failure localize — and does the single-element multi-function make the prefab interior more or less durable than layered construction?