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Definition
| floor plans, elevations, and sections are common types of this, enable a three dimensional object to be seen in two dimensions. Scale a |
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Term
| Most common types of orthographic drawings |
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Definition
| floor plans, reflected ceiling plans, elevations, and sections, also used as a basis for some types of three dimensional drawings including axoonometric drawings, elevation obliques, and one point sectional perspectives. |
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Term
| Horizontal cut made through a buiding.... |
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Definition
| about 5' above the floor. Dashed lines are used for items to indicate that they are above the normal section cut. |
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Term
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Definition
| shows only those construction elements that touch the plane of the ceiling, as well as the ceiling itself and the objects in the ceiling. |
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Definition
| can show dimesions of the length and width. It is an orthographic view of the side of an object. |
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Term
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Definition
| an orthographic view of an object after it has been cut and one portion has been removed. Vertical slices through objects, they can also be horizontal cut also, and is convenient to show the internal construction of something. |
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Term
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Definition
| commonly show complex construction information as a relatively large scale, and are section views of one sort of another. |
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Term
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Definition
| an axonometric drawing is a view of an object inclined to the picture plane in such a way that the three principal axes are foreshortened. Three types of drawings: isometric, dimetric, trimetric. Scaled equally at true size. |
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Term
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Definition
| 3 dimensional view of an object wher the object is tilted in relationship to a picture plane. All lines of projection are parallel in relationship. The three principal axes of the object make equal angles with the picture plane, or the drawing surface. Forms angles of 30 degrees on the paper. |
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Term
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Definition
| all three of the principal axes are foreshortened. |
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Term
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Definition
| the angles and forshortened lengths are complex to construct exactly, but for convenience a given angles, such as 15 degrees, is used for two of the axes and the third is drawn vertically on the paper. The vertical lines are drawn at full scale, while th other two forshortened axes are drawn at an arbitrary 3/4 actual scale. |
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Term
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Definition
| a 3 dimensional view of an object where one plane of the object is parallel to the picture plan while the third axis is oblique to the picture plane. Shows one plane of an object (two dimensions) in true shape and scale with the 3rd dimension drawn as lines at a fixed angle to the true plane |
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Term
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Definition
| give the most acurate two dimensional representation of the 3 dimensional world. Use the principal of convergence, which is the apparent dimishing size of objects as they get farther from the eye. When the point of view is perpendicular to one of the planes of the object, a one point perspective is created. All lines are drawn vertically , and all lines are perpendicular to the line of sight are drawn horizontally. |
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Term
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Definition
| Station Point, two lines are extended from the station point to the left and right parallel to the two major set of parallel line of the object. |
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Term
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Definition
| horizon line, represents the place where the earth meets the sky, just as in real 3 dimensional world. |
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Term
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Definition
| is to be assumed at about eye level, or about 5'0" or 5'6" above the floor lovel. The bottom point of the height line is set by measuring 5' down from the horizon line. If the height of the wall is 9', then the top point of the height line is set by measuring 4' above the horizon line. |
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Term
| Vertical dimensions (perspective) |
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Definition
| are scaled on the height line and projected from one of the two vanishing points along surfaces of the object until they intersect the appropriate vertical lines projected from the picture plan above. |
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