Design of angles and Tees fail as per the AISC code when seismic provisions of AISC 341 are checked


 Applies To 
 Product:STAAD.Pro
First Affected Version:20.07.11.33
 Found in Version:20.07.11.33
Released in Version:20.07.11.47
Environment:All
 Area: Design
Subarea:AISC 360, AISC 341
 Issue #:314845

Problem Description

Design of angles and Tees fail as per the AISC code when seismic provisions of AISC 341 are checked. With SEI set to 1, error messages like the ones below are obtained for angles and tee sections

ERROR: MEMBER DESIGN FAILED FOR MEMBER 378
ERROR: MEMBER DESIGN FAILED FOR MEMBER 379

.

Steps to Reproduce

  1. Run analysis on a model with angles and Tees.
  2. Use SEI 1 ALL in the design which would make the software check the seismic provisions of 341-05/10
  3. Note the errors in the design output

Workaround

There is currently no workaround other than commenting out the seismic checks for these sections.

Solution

This issue was released in version 20.07.11.47

See Also