Nominal Piping Diameter Equivalence Rule - Intergraph Smart 3D - Reference Data - Hexagon PPM

Intergraph Smart 3D Piping Reference Data

PPMProduct
Intergraph Smart 3D
aSubProduct
Piping
PPMCategory_custom
Reference Data
Version_SThreeD_Custom
13

The Nominal Piping Diameter Equivalence Rule (NPDEquivalence sheet in the Piping Specification.xls workbook) defines equivalent nominal piping diameter (NPD) values in two systems of units. The NPD equivalence rules allow piping designers to use multiple systems of units for nominal pipe diameter within a piping materials class. For example, NPD equivalence rules allow piping designers to do the following:

  • Use a system of units even if the catalog data is defined using other units.

  • Use two systems of units in the same model, piping materials class, and even in the same line.

  • Define transition components that have different units of measure at each end.

The software uses these rules to determine equivalent NPDs for querying the piping specification. However, the NPD equivalence rules are not used in the Piping Catalog.

NPD in Primary Units of Measure (Required)

Type a valid nominal pipe diameter for the piping specification in the primary system of units.

Primary Units of Measure (Required)

Specify the units for the nominal pipe diameter value that you entered in the NPD in Primary Units of Measure column. For example, type mm or in.

NPD in Secondary Units of Measure (Required)

Type an equivalent nominal pipe diameter in the secondary system of units. For example, if the primary units of measure are inches and the nominal pipe diameter in the NPD in Primary Units of Measure column is 1, then an equivalent value in millimeters is 25.

Secondary Units of Measure (Required)

Specify the units for the nominal pipe diameter value that you entered in the NPD in Secondary Units of Measure column. For example, type mm or in.

See Also

Piping Specification Rules
Define NPD Equivalences