Autodesk 235B1-05A761-1301 User Guide - Page 122
Object Types, Description, Object
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Different views of a plumbing part A parametric part is dynamically generated based on predefined or user-defined properties, such as shape and size. The part properties determine how the part is generated. Parametric parts are generated as 3-dimensional model blocks; therefore, different appearances display in different view directions. For more information about parametric and block-based parts, see Understanding Parametric and Block-Based Parts on page 641. Parts can have specific behaviors, such as automatic cleanup when connecting to other parts, or default insertion under certain design circumstances. Parts can have multiple components, such as a centerline, insulation, and lining. The object type of a part is the basis for controlling part behavior and display representations. Object Types The following table describes the object types in AutoCAD MEP. Object Description Cable Tray Fitting A part dynamically generated based on predefined properties to which other parts can be connected. It can be inserted during layout and includes as components connector, annotation, centerline, and rise/drop. Cable Tray A part dynamically generated based on predefined properties to which other parts can be connected. It is trimmed when fittings are connected and includes as components connector, annotation, centerline, and rise/drop. Circuit A non-graphical object that represents the connection between electrical components. It has unique identifying properties including system, rating, panel, number of devices, length, number of poles, voltage, total load, demand factor, and estimated demand load. Conduit Fitting A part dynamically generated based on predefined properties. It can be inserted during layout and includes as components connector, annotation, centerline, and rise/drop. Conduit A part dynamically generated based on predefined properties to which other parts can be connected. It is trimmed when fittings are connected and includes as components connector, annotation, centerline, and rise/drop. Device A style-based part that can appear as one of several predefined blocks, depending on the display representation and the direction from which it is viewed. It is used by the Wire object type to complete connections between multiple electrical parts. Duct Custom Fitting A part dynamically generated from a centerline created from user-selected AutoCAD entities, such as lines and arcs, for the geometry. Duct Fitting A part dynamically generated based on predefined properties to which other parts can be connected. The part can be inserted by the software as you lay out duct and includes as components contour, connector, annotation, centerline, insulation, lining, and rise/drop. 104 | Chapter 4 Drawing Essentials
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