Basic Drafting Standards - Interior Design - University of Minnesota

Figure 19. Detail symbol used on the plan view Figure 20. Detail symbol used on the section view
Elevation Datum
Elevation data are used to indicate a level line control point. An elevation datum has three parts. Farthest from the drawing is a ¼”
diameter circle with two lines crossing inside horizontally and vertically, and the upper right part and lower left part are filled with solid
black. Above the horizontal line stretched out from the middle of the circle is a description of a point where a level is measured such
as ceiling line, grade, or finished floor plan. The actual elevation that is the height of the point is described below the horizontal line
(Figure 21). An elevation datum is generally used for exterior elevations.
FINISHED FLOOR LEVEL
16'-7"
Point where a level is measured
Elevation
Figure 21. Elevation Datum
22