Final answer:
The section of building plans showing views of a built-in hot tub would be the detail drawings, which provide detailed information on individual construction elements.
Step-by-step explanation:
The section of building plans that would show views of a built-in hot tub is likely to be the detail drawings. Detail drawings display a close-up view of different aspects of construction and provide information regarding the materials, dimensions, and installation procedures. While specifications would list the types of materials, sizes, and quality standards, and framing plans would show the structure for supporting the construction, detail drawings are more focused on individual components. Sections might show a vertical cut of the space, but detail drawings are better at giving a comprehensive view of specific elements, like a built-in hot tub, including interface with other building elements.