Autodesk 235B1-05A761-1301 User Guide - Page 278

Graphical 1-Line Display You can choose a graphical 1-line display to show a generalized routing of a pipe system. The graphical 1-line display uses non-scaled components. It displays equipment as schematic symbols but does not visually indicate a fitting or joint type. The sizes of components and equipment symbols are not related to their actual dimensions but are related to the physical model location. In the following example, a natural gas line and hot water line are connected to a boiler. The pipe lines and their in-line components, including valves, reducers, a pressure regulator, and a pressure gauge, display as 1-line symbols. The boiler displays as a scaled 2-line component. The gas line uses threaded connections, while the hot water line uses soldered connections. The connection types are indicated on the fittings. If you use a 1-line or 2-line display to plot a large pipe system, the fittings and equipment on smaller pipe runs might not render well because they are so small compared to the size of the entire system. If you use the graphical 1-line display for smaller diameter pipe systems, the fittings and equipment symbols plot at a specified size. Graphical 1-line is a basic way to display a system. It does not alter the components in the system. The pipe components in graphical 1-line still contain all the defined properties, such as size, type, and system, and they can be changed to display as scaled 1-line or 2-line. RELATED For more information, see Configuring System Definitions for 1-Line, 2-Line, or Single Line Graphics on page 282 and Configuring Graphics for Single Line Pipe Display on page 283. 2-Line Display A 2-line display shows pipe components as scaled, 2-dimensional objects. In isometric views, the objects display as 3-dimensional objects. Fittings and equipment are displayed based on the contours of their physical 260 | Chapter 7 Drawing Piping Systems