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{live-template:Tutorial}

The purpose of this tutorial is to utilize\\

Bulb-girder cross sections, such as that shown in Figure 1, may be created using the [Section Designer|kb:Section Designer].
to
develop\\
a
bulb girder section with rounded corners, such as the one shown in the figure below:

!section dimensions.png|border=1,hspace=30px!

First, start the section designer and!section dimensions.png|align=center,border=0!

{center-text}Figure 1 - Bulb-girder cross section{center-text}

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To model a bulb-girder section, first open the Section Designer, then [use polygons to draw the outline of the bulb girder section||tutorials:Drawing polygonal sections in section designer and editing their geometry via interactive database editing] withoutthe outline of the radiussection atwithout the cornerscorner radius, as shown in Figure the2:
screenshot
below:\\

!rectangular section.png|borderalign=1center,hspaceborder=30px!

Switch to the 0!

{center-text}Figure 2 - Outline without the corner radius{center-text}

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Next, switch to reshape mode viaby selecting "Draw > Reshape Mode",. clickClick on the section, and then right-click on each corner [joint|kb:Joint] to specify a radius where needed, as shown in Figure 3:

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!creating radial chamfers.png|borderalign=1center,hspaceborder=30px!

Below is0!

{center-text}Figure 3 - Caption{center-text}

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Figure 4 presents the final bulb tee girder section-girder cross section. All corners other than those at the extreme fibers are properly detailed with roundedround corners:.

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!final section.png|borderalign=1center,hspaceborder=30px!0!

{center-text}Figure 4 - Caption{center-text}


h1. Attachments

* [SAP2000 V14.2.0 model for the above example|Create bulb-girder sections with rounded corners^chamfered bulb tee section V14.2.0.zip] (Zippedzipped .SDB file)

{related-incident:no=24260|comment=Creating bulb girder sections with rounded corners}