Specifying cross section dataSpecifying cross section dataAll structural objects that participate in calculations, including truss, straight truss, curved truss, lighting pipes, and hoists, must have an associated file that contains cross section data.
Trusses with default manufacturer data include the cross section information, identified with a unique code from the manufacturer’s sets. If you are Creating a custom truss symbol, either select a cross section by its code, or specify valid custom cross section information.
If not using a specific manufacturer cross section, a generic, rigid cross section can be selected. If not using a manufacturer or a generic cross section, specify custom cross section data.
A lighting pipe cross section is assumed to be a rigid cross section of the selected Construction Material chosen from the Object Info palette. A hanging position’s cross section data are based on the original object that was converted into a hanging position.
To select a cross section and/or specify cross section data:
Do one of the following:
● For a truss object, right-click on the truss and select Customize Truss Symbol Data from the context menu. From the appropriate tab of the Truss Properties dialog box, click Change Cross Section.
● From the Object Info palette of a straight truss or curved truss, click Truss Cross Section.
● From the Object Info palette of a hoist, click Chain Cross Section. The Chain Cross Section dialog box contains a subset of the parameters described here; see Placing hoists.
The Cross Section dialog box opens.
Click to show/hide the parameters.
The cross section UID displays for the truss.
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