Axial P-point (PTAXI)

A PTAXI allows a P-point to be defined in terms of an axis and a distance along that axis. A PTAXI has no member elements and has the following attributes:

• NUMB - the P-point number

• PCON - the connection type

• PBOR - the bore of the P-point

• PAXI - the axis of the P-point

• PDIS - the distance along the axis of the P-point

• PSKEY - the pipe fitting (end condition) type to be used by Isodraft

• DESC - a textual description of the P-point

• PURP - the purpose of the P-point

NUMB must be set as a value. PAXI must be set as a direction - refer to Defining an Axis for further details. The other attributes may be set as values or words (as appropriate), or in terms of parameters (which in turn are values or words). The classes of parameter which may be used depend on the class of Component (Piping Component, Joint or Fitting) which uses the P-point - refer to Parameters for further information. PCON and PBOR are used for Piping Components only. They have no meaning if the P-point is used by a Joint or Fitting. For further information of PSKEY settings, refer to Specifying Pipe End Conditions for use by Isodraft.

These conventions also apply to the attributes of the PTCAR and PTMIX elements described below. Refer to Constructing 3D Pointsets for examples of setting these attributes.