Which element commonly guides both design decisions and specifications for each room?

• A. Marketing plan
• B. Room data sheet
• C. Insurance policy
• D. Post-occupancy survey

Answer: (B)

The room data sheet serves as a central reference that guides both design decisions and specifications for each room. It records essential information such as the room’s purpose, dimensions, layout requirements, adjacency, finishes, fixtures, equipment, lighting, power and data needs, HVAC and acoustics, accessibility, and storage. With this single document, designers make informed choices about space planning, circulation, scale, and functional features while also detailing exact materials, finishes, fixtures, and mechanical/electrical details for construction and procurement. This alignment helps ensure what’s planned visually matches what’s installed, and supports coordination with contractors, suppliers, budget, and schedule. The other options don’t serve this per-room design-guiding role: a marketing plan targets branding and market strategy; an insurance policy covers risk rather than design specifics; and a post-occupancy survey gathers feedback after the space is in use rather than guiding the design process.