Drawing Format

Figure 11 Example of a Fabrication Drawing

Engineering Symbology Prints and Drawings Volume 1 of 2
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INTRODUCTION TO THE TYPES DOE-HDBK-1016/1-93 Introduction to Print Reading OF DRAWINGS, VIEWS, AND PERSPECTIVES Drawing Format P&IDs, fabrication, construction, and architectural drawings can be presented using one of several different formats. The standard formats are single line, pictorial or double line, and cutaway. Each format provides specific information about a component or system. Single Line Drawings The single line format is most commonly used in P&IDs. Figure 12 is an example of a single line P&ID. The single line format represents all piping, regardless of size, as single line. All system equipment is represented by simple standard symbols (covered in later modules). By simplifying piping and equipment, single lines allow the system's equipment and instrumentation relationships to be clearly understood by the reader. Pictorial or Double Line Drawings Figure 12 Example of a Single Line P&ID Pictorial or double line drawings present the same type information as a single line, but the equipment is represented as if it had been photographed. Figure 13 provides an example illustration of a pictorial drawing. This format is rarely used since it requires much more effort to produce than a single line drawing and does not present any more information as to how the system functions. Compare the pictorial illustration, Figure 13, to the single line of the same system shown in Figure 12. Pictorial or double line drawings are often used in advertising and training material. PR-01 Rev. 0 Page 16

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