AD.2007-09.1.1 I-Section with Different Flange Shapes
User-provided steel table Wide Flange sections can now have different flange sizes on top and bottom.
Previously, the sections were required to be doubly symmetric. Now, you may specify a different bottom flange size.
To add a UPT I-Section with different flange sizes
(Optional) Select OK.. Select appropriate units for length and click
If no User Defined Table exists, you will be prompted to create one.
The Create User Provided Table dialog opens.
Click New Table.
The Select Section Type dialog opens.
In the Select Section Type list, select WIDE FLANGE and then click OK.
The dialog closes and the Select Existing Table list in the Create User Provided Table dialog now has at least one entry.
Click Add New Property.
The Wide Flange dialog opens.
Type dimensions in the D, TF, WF, TW, TF1, and, WF1 fields to define the section.
Two new fields— TF1 and WF1 —are used to specify different dimensions for the bottom flange. If these fields are left empty, the values for the top flange are used (doubly symmetric section).Note: Refer to TR.19.1 Wide Flange for detailed descriptions on properties of Wide Flange sections in User Steel tables.
The derivative cross section properties are calculated.
The dialog closes and the section is added to the Table Data list in the Create User Provided Table dialog.