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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
Preparing for creation and maintenance of pipe specs
3.5 Administering pipe part catalogs
PipeSpec Designer
28 Operating Manual, 09/2014, A5E32076948-AA
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