Autodesk 235B1-05A761-1301 User Guide - Page 483
Plumbing System Definitions, Plumbing Fittings
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Domestic hot and cold water system Before you draw a plumbing run, you specify a system for the segment on the plumbing line Properties palette. As you draw the run, the software inserts plumbing fittings based on the default fittings configured for that system definition. However, when necessary, you can override the default fittings for an individual run or manually add an individual fitting. For information on specifying default fittings, see Specifying the Default Fittings for a Plumbing System Definition on page 478. Plumbing lines are 2-dimensional (2D) and can be system-based and style-based. For this reason, before you add plumbing lines to a drawing, you should define the plumbing systems, plumbing line styles, and plumbing fitting styles. The plumbing line system determines the system type (i.e., Cold Water, Waste, or Fire Protection), the fittings that the software inserts when necessary, and other properties. Systems help maintain consistency throughout a run and across multiple drawings in a project. Once you define the plumbing systems, you select a system on the Properties palette as you draw plumbing runs. For more information, see Configuring Plumbing System Definitions on page 477. The plumbing line style determines the appearance and function, such as the available standard sizes and how crossing plumbing lines display in plan view. You can create plumbing line styles based on information such as the size, type, and gauge of the material (i.e., Schedule 40 Carbon Steel or Copper Tube). As with systems, once you define the styles, you can select a style on the Properties palette as you draw plumbing runs. Plumbing System Definitions A plumbing system definition is typically named for the plumbing system for which it will be used, such as domestic hot water or sanitary sewer. The settings for a system definition control many of the display properties of a plumbing system. For example, a layer key style is assigned to a plumbing system definition, which dictates the layer, color, and linetype for the plumbing system. In the software, plumbing runs that have different systems cannot connect to each other without changing the system for the connecting run. The exception is when the 2 system definitions comprise the same system group. System groups allow different systems to connect to each other. Plumbing Fittings As you specify systems for equipment, fixtures, and plumbing line segments, AutoCAD MEP inserts plumbing fittings based on those specified in the system definition. Therefore, you should specify default fittings for the plumbing system definitions to use on a project. You can specify default fittings for 4 types of fittings: elbows, tees, crosses, and transitions. For example, you can specify that the software place a base tee in the drawing rather than a straight tee. For information on specifying default fittings, see Specifying the Default Fittings for a Plumbing System Definition on page 478. Plumbing System Definitions | 465
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