What type of drawing communicates the design intent of a project but does not have the level of detail required for final construction documents?

A bubble diagram is a schematic drawing used during the initial programming and conceptual design phases. Its primary purpose is to illustrate the functional relationships, adjacencies, and relative hierarchy of different spaces or activity areas without regard to precise scale or architectural form. It effectively communicates the core design intent and spatial organization before the development of more detailed, dimensioned drawings required for construction.

A. Finish plan: This is a detailed technical drawing, part of the construction documents, that specifies the exact materials, colors, and finishes for all interior surfaces.

B. Space plan: This is a scaled drawing showing the layout of rooms, circulation paths, and furniture placement. It is more developed than a bubble diagram and is a step toward construction documents.

1. Piotrowski

C. M. (2017). Problem Solving and Programming for Interior Designers. John Wiley & Sons. In Chapter 4

"The Design Process

" bubble diagrams are described as a tool used in the schematic design phase to "graphically represent the primary functional relationships of the spaces" (p. 78). This places them firmly in the conceptual stage

distinct from construction documents.

2. Kilmer

R.

& Kilmer

W. O. (2014). Designing Interiors (2nd ed.). John Wiley & Sons. The text explains that bubble diagrams are used in the "schematic design" phase to explore "functional and spatial relationships" (p. 51). This phase precedes the "design development" and "construction documents" phases

which involve detailed plans like finish and space plans.

3. Grimley

C.

& Love

M. (2018). The Interior Design Reference & Specification Book (Updated and Revised). Rockport Publishers. In the section on "Space

" the authors describe bubble diagrams as abstract graphics used to "study the organization and relationship of spaces" during the schematic design phase

highlighting their role in communicating intent rather than construction detail (p. 20).