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Interior Design Space Planning & Ergonomics Flashcards

6 cards from real Interior Design practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. Which drawing type shows a room as if viewed from above with the roof removed, indicating furniture placement and spatial relationships?

    Answer: Floor plan

    A floor plan is an orthographic top-down view showing walls, doors, windows, and furniture layout, and is the primary space planning document in interior design.

  2. What does the term 'net square footage' refer to in space planning?

    Answer: Usable interior floor area excluding walls and structural elements

    Net square footage is the actual usable floor area within a space, measured inside walls and excluding structural elements, used for programming and furniture planning.

  3. In commercial interior design, what does the acronym RSF (Rentable Square Footage) include that USF (Usable Square Footage) does not?

    Answer: A proportionate share of common areas such as lobbies, corridors, and restrooms

    RSF includes USF plus the tenant's proportionate share of building common areas, which is why tenants pay rent on more square footage than they directly occupy.

  4. What is the primary purpose of creating a bubble diagram early in the interior design space planning process?

    Answer: To explore adjacency relationships and functional zone organization before detailed planning

    Bubble diagrams use abstract shapes to test how different spaces relate to each other in terms of proximity, access, and flow before committing to a formal layout.

  5. According to NCIDQ ergonomic standards, what is the recommended knee clearance height under a desk for a seated user?

    Answer: 27 inches minimum

    A minimum knee clearance of 27 inches high is required under work surfaces to allow comfortable seated positioning for users of average height.

  6. The concept of 'borrowed light' in space planning refers to:

    Answer: Transferring daylight from one space to an interior room using glass partitions or clerestory windows

    Borrowed light uses glazed walls, interior windows, or clerestory panels to allow daylight from perimeter rooms to reach interior spaces that lack direct exterior windows.

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Sources & references

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  1. cidq.org — Test delivery, fees, passing score, registration, renewal, retake policy, score release, test dates, time limit, score validity · verified Oct 2026