the elevation of a point on the earth. 3d
Based on the fact that as designers of the built environment we have agreed to communicate through drawings and by using the principles of descriptive geometry and orthographic projections, let’s look at an example of a set of drawings and then a video so you can compare different ways of describing space, form, concepts and events that go beyond mere representation.
Below are four drawings that represent the formal and spatial characteristics of the Pantheon, a building from ancient Rome. The top two drawings are elevations -- the left is a front elevation of the entry and on the right is a side elevation. The entry portico is on the left hand side of this second elevation. On the bottom is a section created by slicing through the building and finally a plan. You can compare them to a further explanation and description of the actual space and the events that take place in it in the video presented right after:
Elevation
Plans, sections, and elevation drawings are conceptual and not available through experience. Our eyes operate with a perspectival bias and that makes it difficult to view an object in elevation. Elevations are a projection on a plane in front of the object with no distortion because of perspective. Each line and surface that is parallel to the plane of projection is a true dimension. In architecture we typically use elevation to describe the exterior of the building, its facade, as well as to depict the interior walls of a room, interior elevations.
Elevation drawings tend to flatten an object that has three dimensional protrusions because it is a projection onto a parallel surface placed in front of the object. Consequently to see the projections of a bay window or a porch will require more than one elevation to fully describe the object.
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