What best describes the difference between design development and construction document drawing sets for sizes, scales, and detail?

• A. DD includes final details and precise quantities for bidding and fabrication.
• B. DD uses provisional layouts with limited details; CDs provide the complete shop drawings.
• C. DD is prepared after construction has begun.
• D. DD includes more resolved dimensions and sections; CDs include final details and precise quantities for bidding and fabrication.

Answer: (D)

The main idea is understanding how much detail and finality each drawing set carries. In design development, the design is refined beyond schematic concepts, with more accurate layouts, elevations, and sections, and more precise dimensions and relationships, but it isn’t yet locked into every construction detail. Construction documents, by contrast, lock in the final details and coordinate every element so contractors can bid and fabricate accurately. They present final dimensions, material specifications, assemblies, and detailed sections and details that explain exactly how components join and are installed. So design development provides more resolved dimensions and sections than before, while construction documents deliver the final, detailed information and precise quantities needed for bidding and fabrication.