Determining The Component Geometry Of A Pipe Part; Configuring The Geometry Attributes - Siemens COMOS Operating Manual

Preparing for creation and maintenance of pipe specs
3.5 Administering pipe part catalogs
See also
Legal notice (Page 11)
3.5.2

Determining the component geometry of a pipe part

3.5.2.1

Configuring the geometry attributes

Principle
● The base objects from the pipe part catalog are not multiplied out by nominal diameter.
They do not save the true values for the dimensions.
● The pipe part dimensions are determined in the properties of the pipe part.
On the "3D Geometry" tab in the attributes of the following control groups:
– "General Geometric Description"
● Instead of actual dimensions, calculation formulae are input in the attributes in the base
objects. They determine:
– The source from which the pipe part gets its dimensions
– How the actual values are calculated
– What the actual values are
● The calculation formulae are evaluated in the engineering data.
Reason: Some attributes used for calculation are not set until the engineering data stage;
these include the construction angle or the component length for components with variable
lengths.
Consequence:
If you create a pipe part in the engineering data and set the nominal diameter, COMOS
evaluates the calculation formulae of the geometry attributes to determine which geometry
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PipeSpec Designer
Operating Manual, 09/2014, A5E32076948-AA