To define and assign a web-tapered I section, use the
following procedure.
Note:
f1 (Depth of section at start node) should always be greater than f3 (Depth of section at end node). You must provide the member incidences accordingly.
If the tapered section requires a composite slab, then use a tapered I Section user-provided table section instead.
Tapered I-sections have constant flange dimensions and a linearly varying web depth along the length of the member.
Shear deformation is not considered for tapered
I-Beams and tapered poles. This means that the
SET SHEAR
command has no effect on the deformation
computed for members with these cross sections.
-
On the
Specification ribbon tab, select the
Tapered tool in the
Beam Profiles group.
The
Tapered I dialog opens.
-
Select an associated
Material.
This feature allows you to use material definitions
for steel, stainless steel, concrete, aluminum, or any previously specified,
custom material definitions.
Note: Tapered I sections are typically steel or aluminum members.
-
Specify the profile dimensions for the shape.
-
Either:
To… | Do the
following… |
---|
add the section to the model
for later assignment |
click
Add. |
add the section to the model
and assign to the current member selection |
click
Asign. |
-
Repeat steps 2 through 4 as needed to add more tapered I sections
to the model.
-
Click
Close.
The section and –if selected–
associated material, is added to the Properties - Whole
Structure dialog with the Source indicated as Legacy.
If you did not assign the section to a selection set, you must select the
section label in the
Properties - Whole Structure dialog
and assign it using one of the assignment methods.