Bulb-girder cross sections, such as that shown in Figure 1, may be created using the Section Designer.
Figure 1 - Bulb-girder cross section
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To model a bulb-girder section, first open the Section Designer, then use polygons to draw the outline of the section without the corner radius, as shown in Figure 2:
Figure 2 - Outline without the corner radius
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Next, switch to reshape mode by selecting Draw > Reshape Mode. Click on the section, then right-click on each corner joint to specify a radius where needed, as shown in Figure 3:
Figure 3 - Creating radial chamfers
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Figure 4 presents the final bulb-girder cross section. All corners other than those at the extreme fibers are properly modeled with round corners.
Figure 4 - Final cross-section
Attachments
SAP2000 V14.2.0 model (zipped .SDB file)
Metadata
Name: Create bulb-girder sections with rounded corners
Description: Use the Section Designer to create a bulb-girder section with rounded corners.
Program: SAP2000
Program Version: 14.2.0
Model ID: na
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