My model is giving me the controlling load case from AISC D.1, slenderness in tension (member 7 and 8). Why is that?
filter press building.STD
Hello,
Can you please let me know the version number you are using? I have checked the issue in 22.08.00.175 and could not find any such failure due to slenderness. For example see elow snap.
If you are using any other version can you please update to the latest version and check?
Please find below link to download the latest version of STAAD.Pro. This link contains step by step procedure to download.
https://communities.bentley.com/products/ram-staad/w/structural_analysis_and_design__wiki/40058/procedure-of-downloading-staad-pro-ce
this is what I get, is TMAIN 1 on in the model I uploaded?
This is happening due to the fact that STAAD.Pro is computing the slenderness for tension differently when designing as per the AISC 360-16 than what it used to do before. It is using the max of LY, LZ and the physical member length as the unsupported length for the slenderness check for tension. This is based on the logic that tension slenderness is checked mainly for protection against inadvertent damage to the section during fabrication, transportation or erection as indicated in the Commentary. Since during transportation/fabrication/erection the restraints may not be available and the full length of the member could be unsupported, to be on the conservative side we are using the maximum as indicated above.
You can use Tmain 1 to bypass this.
Answer Verified By: Noel12