Conduit System

The underground system consists of ducts, direct buried cables, or pipes extending between vaults or manholes. New conductor and telephone cable are often installed underground in congested areas. Conductors and cables can be drawn or pulled from manhole locations for repairs or changes.

Conduits, or underground linear structures, are constructed of materials that are impervious to water and do not degrade or corrode easily. Cable also may be buried directly in trenches, which ArcFM models as a ConduitSystem feature. In this case, ducts are used as placeholders for the position of cables and conductors associated with the trench. Cables are associated with conduits through an attributed relationship class called ConduitSystem_ConduitSystemMember Cross Reference. The user creates this relationship class to relate feature classes with model name ULS to feature classes with model name ULSMember.

The ConduitSystem feature class contains information about the position and characteristics of ducts as seen from a manhole, vault, or cross section of a trench and duct. Users can create duct characteristic fields to represent their business processes. Common materials are concrete, plastic, and fiberglass. Common duct diameters are three to five inches. Names of characteristics such as material or size are assigned by the user when creating the Duct Definition object class. This table contains only field names that describe the duct. The values of these fields, such as steel or five inches, are stored for each duct in a COM object, which is stored in the Configuration attribute field of the ConduitSystem feature class.

Subtypes: Duct Bank, Trench. The use of subtypes is optional. The Subtype attribute can be removed if subtypes aren't used in the model.

Associations: UndergroundStructure

Model Names: ULS

Attributes:

BuriedDepth: text - Depth from top of conduit to ground line.

Comments: text - User or designer comments.

Configuration (see DuctDefinition): BLOB - Stores information about duct or position layout within the conduit in a COM object; stores the values of attribute fields created in Duct Definition object class. Conduit Manager uses the DUCTBANKCONFIGURATION model name on this field to designate it as the BLOB field in which the layout information is stored.

ConstructionStatus: long integer - This field contains a value from the Construction Status domain that indicates the current status of construction on the structure (e.g., proposed, existing, retired).

DuctBankHeight: long integer - Stores the height of the duct bank. Underground Facility Manager uses the DUCTBANKHEIGHT model name on this field.

DuctBankWidth: long integer - Stores the width of the duct bank. Underground Facility Manager uses the DUCTBANKWIDTH model name on this field.

EncasementType: text - Code indicating encasement type; domain values include Backfill, Concrete, and Unknown.

FacilityID: text - Meaningful utility-assigned unique identifier.

Height: double - Height of the conduit system.

Hyperlink: text - Used to store a hyperlink path via standard Esri hyperlinking functionality.

InstallationDate: date - Date of installation.

LabelText: text - Stores a string to label conduit on map.

LengthSource: text - Source of length measurement; domain values are Mapping System and Field Measurement.

Manufacturer: text - Name of the manufacturer.

MeasuredLength: double - Length of ConduitSystem. The ArcFM Length Measured Domain autoupdater uses the MEASUREDLENGTH model name on this field. This field must also be Editable for the autoupdater to work correctly.

Model: text - Model of the ConduitSystem.

Width: double - Width of the conduit system.

WorkOrderID: text - Code indicating subtype of ConduitSystem.

Note: The following attributes are only valid for the DuctBank subtype: Height, Width, Manufacturer, Model and EncasementType.

Configuration field: This single binary large object (BLOB) attribute field of the ConduitSystem feature class stores a COM object containing information describing the layout of the conduit. This includes the value of fields defined in the DuctDefinition object class. Users can create fields in the Duct Definition table such as those listed below. The values of these fields, entered or edited when users place conduits on the map, are stored in the Configuration field. Utility administrators can maintain, query, and edit values in this field.