L-Section
The icon for an L-section beam section type looks like this:
When you select L-Section as the beam type on the Beam Section Definition dialog box, you must enter positive values for the following cross-section dimensions:
• b
• t
• di
• tw
Select units for length or use the default principal units.
If you are interested in examining the exact effects of shear on a beam, enter positive values for Shear FactorFy and Shear FactorFz. These factors represent the ratio of a beam's effective "shear area" to its true cross-sectional area for shear in the principal Y and Z directions. The default value is 0.833333, which is accurate for rectangular cross sections.
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An L-section beam type has fewer than two planes of symmetry. Therefore, make sure the beam is loaded or braced to prevent twist under shear loading.
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The figures below illustrate stress recovery points for L-section beam section types. The figure on the left shows the points for native mode, and the figure on the right shows the points for FEM mode.
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Return to Beam Section Definition Dialog Box.