Create Category for Fitting
- Last UpdatedDec 04, 2025
- 4 minute read
Using the Steelwork mode of PARAGON it is possible to create a structural fitting such as a Lifting Lug using data sets and design parameters.
A Fitting Category must reside below a STSE which in turn must reside below a CATA element.
Create Category for Fitting
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Select Create, then select Catalogue to open the Create Catalogue Form. Create a new Steelwork Catalogue in the database hierarchy with the purpose set to STL.
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Select Create, then select Section to open the Create Section Form. Create a new Steelwork Section in the database hierarchy with the purpose set to STL.
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Select Create, then select Category for Fittings. The Category for Fittings form is similar in layout to a standard Create Category Form, but contains added sub forms specific to Steelwork Fittings.
Populate the form with a set of data as follows:

Make sure that the values are also populated.
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Click Geometry Ref in the Model References part of the form to open the Geometry References sub form.

Initially, the Geometry References sub form will appear unpopulated.
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Create a New SBOX element by selecting SBOX in the Positive drop-down menu and
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Populate the remainder of the form as shown in the following image:

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Click Data Ref in the Model References part of the form to open the Data References sub form.
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Create the first data element by clicking NEW and declare this as a Design Parameter as below.

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Create three additional Data References with the Definition set to Expression, and with the following values:
Description
Key
Expression
Height of Hole From Base
LHEI
100
Lug Radius
LRAD
40
Hole Diameter
LHOL
50
The populated form should appear as follows:

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Click Geometry Ref in the Model References part of the form to open the Geometry References sub form.
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Select SEXT from the Positive pulldown to create a new Structural Extrusion.
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Populate the form as shown in the following image:

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Click Modify Points to open the Modify Points sub form.
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Click NEW to add a new point.
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Enter values into the columns of the newly created point.
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Highlight a row and click Copy to duplicate the point.
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Create a set of Lug Profile points as below:

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Select PPoint Ref in the Model References part of the form.
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Select Cartesian P-Point (PTCA) then populate the form as below:

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Click Geometry Ref in the Model References part of the form to open the Geometry References sub form.
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Click on the SEXT element in the list of Geometry References
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Select NLCY from the pulldown list of Negative geometry.
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Populate the NLCY element with the following values:

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Once the form has been populated, open the Representation form:

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Click Holes Drawn to display the NLCY as a hole in the Structural Extrusion.
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To improve the rendering level of the curve on the lug specify a numeric value of 1-10 in the Arc Tolerance field. The value of 1 provides the best visual quality and a value of 10 being the most optimized for speed.
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At this point a Part Family and Table Group can be created from the Category, then selected from Design.