About Pipe Network Part Properties

Use the Pipe Properties dialog box and the Structure Properties dialog box to view or edit properties associated with any given pipe network part.

Part properties define a variety of characteristics of the part, including the part family the part belongs to, a part type, and properties defining the part’s size, shape, elevation, automatic resizing behaviors, and other behaviors. Part properties originate from definitions of the part in the part catalog.

After you insert a part into a drawing, you can edit many of its properties. Those changes apply only to the currently selected part in the drawing. For example, once you add a structure, such as a manhole, to a drawing, you can change the structure’s inside diameter by editing the value for the Inner Structure Diameter property, in the Part Data collection, on the Part Properties tab. The default value for the structure’s Inner Structure Diameter property that is maintained in the part list (or the part catalog) is not affected.

Part properties are organized into the following categories:

Category	Description
General	These properties specify the surface and alignment referenced by the part. For pipes, there are properties that specify flow direction. For structures, the structure elevation at its insertion point is specified.
Geometry	For pipes, these properties specify general characteristics of the pipe, such as the flow direction method, flow direction, and the surface and alignment referenced. For structures, these properties specify characteristics such as the structure’s rotation angle, offset, station data, and the number of pipes that are currently connected to the structure.
Resize Behavior	The resize behavior property is specific to pipes. It specifies the behavior that occurs when the pipe is automatically resized. You can choose to have the pipe hold to its crown, invert, or centerline elevation when it is resized.
Hydraulic Properties	For both pipes and structures, these properties specify hydraulic information, such as hydraulic grade lines and energy grade lines, that the pipe network may have received from the Storm Sewers Extension.
Insertion (Rim) and Sump Behavior	These properties are associated with junction structures only. They specify the structure’s insertion point (structure rim) and sump elevation and adjustment behavior.
Part Data	For both pipes and structures, these properties specify a variety of part characteristics, such as part type, part subtype, and the part size name as defined in the part catalog. Some of these properties define the part’s basic primitive shape and behavior, and therefore are read-only.

The Pipe Properties and the Structure Properties dialog boxes have the following tabs:

• Information. Specifies the name, description, object style, and object render material assigned to the pipe or structure object.
• Part Properties. Displays a list of properties that exist for this part. These properties define the basic size and shape of the part, as well as the part family the part belongs to. This section also specifies hydraulic properties for the pipe network, if they exist. You can edit values for certain properties on this tab.
• Rules. Displays a list of the rules that are associated with the part. These rules originate from the default rule of the part in the part catalog. You can edit the part’s rules once you have inserted the part into a drawing. Rules are used to validate certain properties of the part, and also to determine elevation during layout, and during certain editing commands.

The Structure Properties dialog box has the following additional tabs for viewing data about pipes and catchments connected to the structure:

• Connections. Displays a list of each pipe connected to the structure, and property values for each pipe. You can edit values for certain properties, such as elevation data, on this tab. It’s very useful for quickly editing elevations, slopes, diameters or descriptions for multiple pipes connected to a structure. Pressure network pipes that are connected to the structure are also displayed on this tab.
• Catchments. Displays the catchments that are connected to the structure. If no catchments are connected to the structure, you can enter catchment values directly into the Area, Time of Concentration, and Weighted Runoff Coefficient fields.