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I am comparing the STAAD beam design results(Laterally unsupported) and manually calculated results. There is a variation in the values for Sec. 9.3.1.1, Sec. 9.3.2.2 (i) & Sec. 9.3.2.2(ii) .
Would it be possible to share a example file to see what values STAAD is considering in its equations.(For rolled and welded sections)
I have shared STAAD report Track-2 and excel cals. for your reference.
PDF
Hello,
We have kept few verification examples in the below path. You may refer them for some clarifications.
Home > Verification Examples > V.09 Steel Design > V. India
file:///C:/Program%20Files/Bentley/Engineering/STAAD.Pro%20CONNECT%20Edition/Help/GUID-E6604057-DD21-4779-8428-A08817A6ECA2.html
With a quick view to your calculation it seems you have not taken clause 8.2.2 in your consideration. There are certain cases where you need to consider these criteria in calculation for major and minor axis bending.
Here, I think a) and c) will be applicable for your case and for both the cases you need to consider laterally supported condition. Please check and let me know if this helps.
Can you please elaborate how a) & b) is applicable?
If the above case is considered, Major and minor axis moment capacity formula is the same??
Correct me if i am wrong.
Can you please send the model?
Yes, FILTERATION(FINAL 27.09.2021).STD
Please find attached STAAD file
Calculation for combined interaction check. Member 2
Thank you for the reply.
In the previous thread you can see find my calculation, my calculated values and the STAAD values are not matching, even though the formula area same. Just want to verify what is going wrong/missing.
LC 1417 is giving the higher compression load, why have you considered LC1419. Based on this ny and nz values are varying from the STAAD values.
Can you show a detailed calculation how are all the beam capacity and the required factors calculated, as i am not getting the same values.
Sorry for the inconvenience
Please consider the E value as 205000 N/mm2 in the manual calculation as this value is considered in the STAAD from material definition.
For bending capacity calculation use this formula to calculate Mcr
Though Load case 1417 has the higher compression value but the moment values are less compared to load case 1419. Program creates thirteen sections along the length of the member and perform design all of the thirteen sections for all considered load cases and the most critical one is reported along with the location and load case number.