Space-Shape

Definition

Space-shape is the name Jane Callaghan and Catherine Palmer — industrial engineers working in the 1940s — gave to the three-dimensional outcomes of their method for documenting the human body in action: rather than "limiting themselves to x, y, and z planes for the model, they interpolated the body's movement from one view to another to fill in the diagonals. They called these outcomes 'space-shape.'" The results took material form as "clay models, cardboard collages, wire figure armatures, papier mâché, and straws to name a few," each capturing "the collective set of movements from one action" — the space a task (washing hair, getting dressed, putting on stockings) sweeps out in time, made tangible. Weinthal frames them as the empirical alternative to programmatic abstraction: where designers "categorize these tasks with familiar programmatic terms," Callaghan and Palmer "sought to capture the moving body and frame it within categories of tasks, but their intention was first to see how the body moved in time and space before making assumptions about the programmed interior" — "the distinction between them is what separates programming spaces through diagrams versus empirically documenting the body in action."

The space-shape's stated purpose was architectural: "the development of techniques by which space used by the human body in action can be recorded, measured, and reproduced in tangible three-dimensional form useful as the basis of house design" (Callaghan & Palmer, 1944) — the moving body as the datum for "ergonomically improved domestic interiors." Its method mimicked orthographic projection: a "stage" setting with multiple 35mm cameras and mirrors in key locations, yielding "three or more simultaneous views of these definitive motions, a method of correcting for perspective, and a method of presenting a final space-shape to scale," the photographs "aligned around a core vertical axis, upon which multiple elevation photographs were centered. In this case, the central axis provided the hinge for connection." Its recurring difficulty is the concept's theoretical edge: "At times, it appeared that the greater challenge was how to coalesce the views and represent the body in motion as a static model when the movement of the body is inherently fluid." The space-shape is therefore the moving body's compromise with the static model — time's diagonal interpolated into the folded views, fluidity congealed into clay and straw.

Key Thinkers

• (Named in the source, not yet paged — see log: Jane Callaghan & Catherine Palmer, industrial engineers, authors of Measuring Space and Motion (New York: John B. Pierce Foundation, 1944) — the method's inventors and the term's coiners.)
• Lois Weinthal — the concept's transmitter and theorist: reads the space-shapes as "early pioneers chipping away at the challenge of locating the moving body in orthographic projection," and the collection of Callaghan & Palmer's experiments as "the precursors to current motion capture technology."

Related Concepts

• Orthographic Projection — the space-shape's generative system: cameras staged as plan and elevations, views joined at a core vertical axis ("the central axis provided the hinge for connection"), the model as the views "folded up" — the orthographic hinge rebuilt in cardboard and wire.
• Light Tracing — the sibling documentation form: Callaghan & Palmer's "dark technique" photographs recorded the body's paths as light tracings, the time-lapse counterpart to the space-shape's interpolated solids.
• Empirical Methods — the space-shape's epistemology: "empirically documenting the body in action" against "programming spaces through diagrams" — measurement before program, exactly Maycroft's empirical corrective relocated to design.
• Time-Geography — the conceptual family: the space-shape is a domestic, task-scale space-time path made physical decades before Hägerstrand formalized the prism — the body's trajectory through a room rendered as a solid.
• Domestic Interior — the space-shape's application field: chore studies (washing hair, putting on stockings) as the basis of "house design" and "ergonomically improved domestic interiors" — the home measured by its movements rather than its rooms.
• Movement Perception — the inversion: where Venturi's moving observer perceives fixed space, the space-shape fixes the moving body for a stationary designer's eye.
• Embodiment — the body as measurable occupant of space: the space-shape treats embodiment as the interior's dimensional datum ("space used by the human body in action") — the lived body rendered as volume.

Source Support

Sources in the wiki that discuss this concept:

• A pirouette on the orthographic hinge (Weinthal 2018) — the concept's source: the chore studies, the stage-and-mirrors method, the core vertical axis as hinge, the scalar correction and simultaneity problems, the diagonal interpolation, the model materials, and the fluid/static-model difficulty.
• source-notes/voordouw-2018-topology-and-interiority

Open Questions

• The space-shape interpolates "the diagonals" between views — a crafted guess at the movement's continuity. What licence does interpolation take, and does the space-shape record the body in action or the draughtsperson's model of it?
• Callaghan & Palmer's stage mimicked orthographic projection deliberately ("a system for documenting their models in a 'stage' setting"). Would a space-shape built from non-orthographic data (motion capture meshes, sensor logs) still be a space-shape — and what is lost when the "method of correcting for perspective" disappears?
• The stated aim was "the basis of house design": did any house get designed from a space-shape? If the models never entered construction documents, the space-shape is interior design's great unexecuted representation — a research programme whose product was knowledge of the body, not buildings.
• The space-shape freezes fluid movement "as a static model." Weinthal's own programme awaits movement "distilled down to a set of rules" that could enter "the professional construction document set" — is the space-shape the archive from which those rules should be derived, and can rules of movement be derived from congealed models at all?