The 2-dimensional representation of a building form, as shown from the vertical orthographic plane, is referred to as a building elevation. To put it simply, a 3D object is represented by a series of 2D drawings as seen from various vertical planes. The term elevation can refer to the height of a building structure or a piece of land. In this context, elevation is commonly referred to as Average Mean Sea Level. Building elevation drawings are orthographic elevations, which means they are two-dimensional flat drawings. According to Merriam Webster, orthographic projection is the projection of a single view of an object onto a drawing surface.