Current Revision posted to RAM | STAAD Wiki by Steve Crabtree on 6/15/2016 1:47:09 PM
| Applies To | |||
| Product(s): | STAAD.Pro | ||
| Version(s): | All | ||
| Environment: | N/A | ||
| Area: | Design | ||
| Subarea: | American Steel Design | ||
| Original Author: | Bentley Technical Support Group | ||
The KL/r value that STAAD reports for the Y axis for a single angle does not match what I get from my hand calculation. Can you explain why?
For single angles, the local Y and Z axes are the principal axes as shown below:
The KL/r value is computed using ry and rz which are based on the principal axis system. Chances are that your handculation uses the geometric axes.
Tags: LRFD, AISC ASD, AISC 360, KL/r