Dimensioning Features - PDS - Reference

Plant Design System (PDS) ISOGEN

PPMProductFamily
3D Design and Visualization
PPMProduct
PDS
PPMCategory
Reference
Version_S3D
12.x(2018)

ISOGEN's dimensioning features allows you to:

  • Dimension Valve Centerlines

  • Suppress Branch Dimensioning

  • String Dimensioning

  • Gaskets Included In Flanged Component Dimensions

  • USA Style Dimensioning

  • Non-Dimensioned Supports

ISOGEN option 119 controls vertical dimensions/elevations. See Alias ISOGEN Tables for more information.

Dimensioning Valve Centerlines

This feature dimensions valves with certain bores and/or end conditions dimensioned to their centerline only, using string or composite dimension types. This is controlled by ISOGEN option 80 and 81.

Centerline dimensioning on valves will only work with valves that have a spindle point define. Refer to Entering the Iso Symbol Editor Environment for information on defining a spindle point.

ISOGEN option 80 defines the end type that will be dimensioned to the item's centerline.

ISOGEN option 81 determines the upper size limit of valves that will be dimensioned to their centerline. All diameters that exceed the value specified by switch 81 are dimensioned normally.

ISOGEN options 80 and 81 provide the complete definition of valves which will be dimensioned to their centerline. Units of input for the size limit are defined with ISOGEN 41.

See Alias ISOGEN Tables for more information.

Suppressing Branch Dimensioning

This feature suppresses branches and tee bends/elbows with certain bores and/or number of components. Units of input for the size limit are defined by ISOGEN option 41.

ISOGEN option 81 determines the upper size limit of branches whose dimensioning will be suppressed. All branch sizes that exceed the value specified by switch 81 are dimensioned normally.

ISOGEN option 81 also determines the upper limit of components in a branch run that will have dimensioning suppressed. A branch run that exceeds the number of defined components is dimensioned normally.

See Alias ISOGEN Tables for more information.

String Dimensioning

This feature allows pipeline components to be dimensioned individually.

ISOGEN option 9 flags individual dimensions to be output for every component in the pipeline.

See Alias ISOGEN Tables for more information.

Gaskets Included in Flanged Component Dimensions

This feature allows dimensioned flanged components to include gaskets (if present) in the dimension. Leader lines from adjoining flanges are displayed, while dimension leader lines from valve ends are not displayed.

ISOGEN option 9 flags dimensioning to include gasket thickness.

See Alias ISOGEN Tables for more information.

USA Style Dimensioning

This feature displays the dimension on top of the dimension line.

ISOGEN option 9, causes dimensions to be displayed on top of the witness line (USA style).