In the construction industry, the term ‘elevation’ refers to an orthographic projection of the exterior (or sometimes the interior) faces of a building, that is a two-dimensional drawing of the building’s façades. As buildings are rarely simple rectangular shapes in plan, an elevation drawing is a first angle projection that shows all parts of the building as seen from a particular direction with the perspective flattened. Generally, elevations are produced for four directional views, for example, north, south, east, west.
Simple elevation drawings might show:
- The outline of a building.
- Openings such as doors and windows.
- Roofing.
- Projections such as eves and pipes.
- Level datums such as finished ground level and floor positions.
- Key dimensions such as wall lengths and heights.
- Exterior features such as decks, porches and steps.
- Any portion of the foundation that may be visible.
- Exterior wall and roof finishes.
However, they can contain a great deal of detail depending on the reason for their preparation. While insufficient information on elevations can mean that they do not properly satisfy the need for which they were prepared, very detailed elevations can be time-consuming and expensive to prepare. It is important therefore that the reason for the drawing is clear and the level of detail required is specified.
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