What do interior elevation drawings help indicate?

Interior elevation drawings play a crucial role in illustrating vertical surfaces within a building's interior. They provide detailed representations of walls and other vertical elements, highlighting critical components and features. Specifically, these drawings are utilized to show the location of fixtures and cabinets, helping to indicate how they are mounted and organized within a given space.

By using interior elevation drawings, designers and architects can effectively convey essential information regarding the arrangement of these elements, the heights at which items are installed, and their relationships to one another within the interior setting. This assists in the planning and execution of interior design, ensuring that the final installation aligns with the original design intent.

In contrast, other answer choices focus on aspects that do not pertain to interior elevations. The layout of exterior walls, materials used on the building's exterior, and the overall size of a building are not indicated in interior elevation drawings, which are specifically concerned with the interior aspects of a space.