What does Tonal Shading represent?

Tonal shading is a technique used in sketches, maps, and renderings to create a sense of depth and dimension by depicting light and shadow effects. This representation allows viewers to perceive the three-dimensional form of objects more naturally by illustrating how light interacts with surfaces. By varying the intensity and contrast of shading, artists and designers can suggest the curvature, texture, and volume of elements in their work, thus enhancing visual perception.

Other options focus on different aspects of design representation. For instance, structural features are more about the physical components of a design rather than the visual effects of light. Floor plans and elevations are two-dimensional representations essential for architectural and engineering design but do not convey the visual effects created by light and shadow. Finally, dimensions in engineering drawings are precise measurements critical for fabrication and assembly, which do not incorporate artistic techniques like tonal shading.