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A plan view is a view of an object or area as it would appear if projected onto a horizontal plane passed through or held above the object area. Detail drawings (discussed later in this chapter) consist of sections and details drawn at a relatively large scale. General drawings consist of plans and elevations drawn at a relatively small scale. Most construction drawings consist of orthographic views. In construction drawings as much information as possible is presented graphically, or by means of pictures. Construction drawings are technical directions in graphic form, showing the size, quantity, location, and relationships of the building’s components. These drawings are prepared by the architect, engineer, and other specialists depending on the complexity of the project. The term “construction drawing” is generic in that it includes all the drawings needed by the various tradespeople to complete a building project. Presentation drawings are drawn to highlight the aesthetic qualities of a project and, in addition to perspectives, may include isometrics, colored elevations, and colored floor plans (Figure 6.1). These drawings are selling tools and normally consist of perspective views based on the preliminary design concept of the project. They also form the basis for the final working drawings. They are not intended to be used for construction but rather to interpret the client’s needs and instructions, prepare functional studies, select materials, estimate preliminary costs, and solicit preliminary approval by civil authorities. These drawings are essentially intended to be concept design explorations and means of communication between the architect and the client.
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For identification purposes, drawings associated with construction and the building trades can be categorized into four main types, preliminary drawings, presentation drawings, working drawings, and shop drawings.