Limiting Slenderness Ratio

Function

Use this function to enter the limiting slenderness ratios for members subjected to axial compressive and tensile forces.

Call

From main menu, select [Design] tab > [Design Input Data] > [Design Parameters] > [Limiting Slenderness Ratio]

Input

First, select the members in the model and enter the following:

Option

Select Add/Replace or Delete.

Add/Replace : Add the newly entered values or replace the previously entered values.
Delete : Delete the entered values. Data entry is not required when deleting.

Enter the limiting slenderness ratios.

Compression Member
Limiting slenderness ratio for members under axial compression [Default = 200] (refer to (1))

Tension Member
Limiting slenderness ratio for members under axial tension [Default = 300] (refer to (1))

Do not Check
Select this item if the limiting slenderness ratios (KL/r) are of no interest. If selected, design results reflecting the slenderness effects are not produced.

: Apply the entered values to the selected members.

: Close the entry Dialog Bar.

(1)
Apply selectively according to the axial force (tension, compression) acting in the member's local x-direction. When the limiting slenderness ratios are not entered, the following default values are applied :

Compression Member = 200
Tension Member = 300

(2)
When the values of the limiting slenderness ratios are repeatedly entered for the same member, the values will be updated to the last values entered.

(3)
The entered values for the limiting slenderness ratios can be reviewed in the data table arranged in the order of element numbers. The user may Modify/Add and Delete items in the data table.
Access the data table following the procedure below.
From the Main Menu select Design > General Design Parameter > General Design Tables > Limiting Slenderness Ratio.
From the Tables tab of the Tree Menu select Design Tables > General Design > Limiting Slenderness Ratio.