Details on the “Configure IFC Parameters” Dialog

Information on the Configure IFC Parameters dialog in connection with the export of component data in IFC property sets.

This dialog shows the assignments of the LINEAR parameters to the IFC parameters of the respective mapping file and allows them to be edited.

Note: The designation LINEAR parameters also refers to parameters that you have created yourself with the LINEAR Solutions.

You are here

Labeling and Output tab ➤ Export ➤ IFC MEP export < ➤ (Export IFC Property Sets)

Dialog “IFC MEP-Export” in the LINEAR Solutions for Autodesk AutoCAD

Search and Filter Functions

Search field

You can filter the assignment table by parameter and property set designations or by components of the designations by entering a character string in the search field. The search starts automatically after you enter the first character and is updated after you enter further characters. Upper/Lower case is not considered.

: Triggers the search again. Use this button if you have changed the filtering of the table via the drop-down list and want to search for the previously entered character string again.

Drop-down list

Allows you to filter the assignment table according to individual IFC property sets. You can also only display property sets that are relevant for the selected components.

Assignment Table

Column Description
IFC Property Set

Displays the names of the IFC Property Sets.
IFC Parameters

Displays the individual IFC parameters. The IFC parameters are used to transfer the respective data to the properties of the IFC property sets. To do this, the corresponding LINEAR parameters must be assigned to the IFC parameters in the Parameter Mapping column.

The IFC parameters of some properties expect multiple values. For this reason, several LINEAR parameters may have to be assigned to them if they have not already been assigned.

IFC parameters with the additions (Lower Bound) and (Upper Bound) are of the bounded value type and require a minimum and a maximum value. There are therefore two IFC parameter entries for these properties, to which the corresponding LINEAR parameters for the minimum (lower value) and maximum value (upper value) must be assigned.

IFC parameters with the addition (1. value) are of type list value and expect several numerical or descriptive values that are defined by an ordered list. For example, one parameter is expected per port (connection) for the nominal widths of component connections. Several IFC parameters have already been created for some of these properties, which are marked with the additions (2. value), (3. value) etc. You can create additional IFC parameters for each of these properties by clicking on the button in the field of the IFC parameter with the addition (1. value) and selecting Add another entry for this list value in the menu that opens. You can also remove the last entry in the menu.

IFC parameters with the addition (Enumerated value) are enumeration parameters that expect values specified by the IFC documentation. For example, the Shape (Enumerated value) parameter of the Pset_DuctSegmentTypeCommon property set expects a parameter with the values RECTANGULAR, ROUND, FLATOVAL, etc. If you want to export such parameters, you must create a parameter for the relevant components in the Parameter Management and enter the required values manually.
Parameter Mapping

Displays the assigned LINEAR parameters and allows you to assign LINEAR parameters to the IFC parameters.

: Opens the Select Mapping Parameter dialog in which you assign LINEAR parameters to the IFC Parameter so that the values of the LINEAR parameters are transferred to the IFC property sets.

It is possible to assign more than one LINEAR parameter to the IFC parameters. This is necessary if the corresponding property of a property set expects multiple values.

For example, there are IFC parameters of properties that require the values of different LINEAR parameters depending on the respective discipline. For example, the IFC parameter ConnectionSize of the property set Pset_PumpTypeCommon requires the diameter of the connected pipe, which can be found in different LINEAR parameters depending on the discipline. For example, this can be the LINEAR parameter LIN_CO_ELEMENT_DN in Cooling, LIN_WW_ELEMENT_DN in Waste Water or another discipline-specific LINEAR-DN parameter. During export, the system then checks which of the LINEAR parameters has a value and transfers the value of this parameter.

Load ...: Opens the Load Settings dialog in which you load IfcParameterMapping files (*.ifcparmap).

Reset: Resets the parameter configuration. You can remove all assignments or reset the configuration to the LINEAR Default Settings supplied.

Save ...: Saves the current configuration again under the same file name in the same location.

Save as …: Opens the Save as dialog, in which you can save the current configuration with any file name to a desired location.

Note: In order for configurations to be available in the IFC TGA Export dialog, you must save the configurations as a file with the extension .ifcparmapin the following folder: ..\liNear Software\Solutions XX\CAD\Basis\User-Standards.