The Port Alignment Per Spec rule under the Piping Materials Class Rules node (the PortAlignmentPerSpec sheet in the Piping Specification.xls workbook) defines:
When a branch connects to a sloped header. Should the branch be trimmed by adding more weld material or by trimming the branch end?
To provide flexibility in male/female mechanical connections such as underground bell and spigot.
To trim the welded end of a flange at a nozzle to align with a sloped pipe.
The port alignment rules defined on this sheet are the exceptions per piping materials class to the default port alignments defined on the Port Alignment under the Model Rules node in the Catalog task.
Acceptable Alignment Tolerance (Required)
Specify the maximum angular variation between the branch centerline and the header centerline. Be sure to include the unit of measurement when defining this value, for example, 1.5deg.
End Preparation (Required)
Type the end preparation code for the branch connection. Valid codes are listed in the AllCodeLists.xls workbook on the EndPreparation sheet in the Codelist Number column.
Method of Trimming (Required)
Enter the code for the method of trimming. Valid codes are listed in the AllCodeLists.xls workbook on the MethodsOfTrimming sheet in the Codelist Number column.
Nominal Piping Diameter From (Optional)
Enter the pipe diameter lower bound for which the port alignment applies.
Nominal Piping Diameter To (Optional)
Enter the pipe diameter upper bound for which the port alignment applies.
Nominal Piping Diameter Units (Optional)
Enter the unit of measurement, in or mm for example, for the values in the Nominal Piping Diameter From and Nominal Piping Diameter To columns.
Spec Name (Required)
Specify the Piping Materials Class for which the port alignment exception is intended. You must define the Piping Material Class on the PipingMaterialsClassData sheet before you can use it on this sheet. See Piping Materials Classes.