Hello,
I’m probably interpreting these results incorrectly, but I would like to understand.
When checking the beam uplift, FactMin = -1837 lb
I’m assuming this is the 0.6D+0.6W,up load combination (which aligns with the unfactored reactions shown when hovering over the reaction. Doing the calculation by hand: 0.6*3328 lb - 0.6*6389 lb = -1837 lb
What is confusing is why the 0.6D+0.6W,up “Graphed Load Combination” doesn’t display this uplift, but instad shows 1997 lb reaction. Could you clarify this difference? It is always helpful to see what load combination is controlling, but it is not reported anywhere else that I can see.
Hello,
First off, great catch! You’re interpreting the results correctly.
Your hand calculation for the uplift (minus 1,837 lb) matches the FactMin value in the Summary section, so the calculator is using the correct forces for the design checks (shear, moment, and bearing).
The confusion in the diagram appears to be a display issue. The 1,997 lb reaction shown on the blue arrow corresponds only to the dead load portion of the combination (0.6 × 3,328 lb = 1,997 lb). The diagram label is not subtracting the wind uplift component, even though the wind loads themselves are being applied.
To confirm this is a bug, could you please click the “Airplane” button in the top right (“Allow support access to my data”)? That will allow me to open the project, review the diagram behavior, and log a fix with our engineering team.
Best,
Juan Pablo
Hi Juan,
I did as instructed with the airplane button. The message matches the title of this post.
Thanks for following up on this!
Thanks! I just checked your project and confirmed it is indeed a bug in the diagram display.
The good news is that the actual calculation results are not affected, so your design checks are correct. I have flagged this with our team, but it might take a little time to fix since it involves the diagram rendering logic.
We will let you know as soon as it is resolved!
Best,
Juan Pablo
